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
28 void ff_int32_to_float_fmul_array8_neon(FmtConvertContext *c, float *dst,
29 const int32_t *src, const float *mul,
30 int len);
31 void ff_int32_to_float_fmul_scalar_neon(float *dst, const int32_t *src,
32 float mul, int len);
33
34 void ff_int32_to_float_fmul_scalar_vfp(float *dst, const int32_t *src,
35 float mul, int len);
36 void ff_int32_to_float_fmul_array8_vfp(FmtConvertContext *c, float *dst,
37 const int32_t *src, const float *mul,
38 int len);
39
ff_fmt_convert_init_arm(FmtConvertContext * c,AVCodecContext * avctx)40 av_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 }
54