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/libavcodec/arm/fmtconvert_init_arm.c

http://github.com/FFmpeg/FFmpeg
C | 53 lines | 27 code | 7 blank | 19 comment | 2 complexity | 2c012ab5bdacca132bc79f2a206affa8 MD5 | raw file
 1/*
 2 * ARM optimized Format Conversion Utils
 3 *
 4 * This file is part of FFmpeg.
 5 *
 6 * FFmpeg is free software; you can redistribute it and/or
 7 * modify it under the terms of the GNU Lesser General Public
 8 * License as published by the Free Software Foundation; either
 9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include <stdint.h>
22
23#include "libavutil/attributes.h"
24#include "libavutil/arm/cpu.h"
25#include "libavcodec/avcodec.h"
26#include "libavcodec/fmtconvert.h"
27
28void ff_int32_to_float_fmul_array8_neon(FmtConvertContext *c, float *dst,
29                                        const int32_t *src, const float *mul,
30                                        int len);
31void ff_int32_to_float_fmul_scalar_neon(float *dst, const int32_t *src,
32                                        float mul, int len);
33
34void ff_int32_to_float_fmul_scalar_vfp(float *dst, const int32_t *src,
35                                       float mul, int len);
36void ff_int32_to_float_fmul_array8_vfp(FmtConvertContext *c, float *dst,
37                                       const int32_t *src, const float *mul,
38                                       int len);
39
40av_cold void ff_fmt_convert_init_arm(FmtConvertContext *c, AVCodecContext *avctx)
41{
42    int cpu_flags = av_get_cpu_flags();
43
44    if (have_vfp_vm(cpu_flags)) {
45        c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_vfp;
46        c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_vfp;
47    }
48
49    if (have_neon(cpu_flags)) {
50        c->int32_to_float_fmul_array8 = ff_int32_to_float_fmul_array8_neon;
51        c->int32_to_float_fmul_scalar = ff_int32_to_float_fmul_scalar_neon;
52    }
53}