FFmpeg
mpegaudiodsp_init.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #include <stddef.h>
20 #include <stdint.h>
21 
22 #include "libavutil/attributes.h"
23 #include "libavutil/aarch64/cpu.h"
25 #include "config.h"
26 
28  int *dither, int16_t *samples, ptrdiff_t incr);
29 void ff_mpadsp_apply_window_float_neon(float *synth_buf, float *window,
30  int *dither, float *samples, ptrdiff_t incr);
31 
33 {
35 
36  if (have_neon(cpu_flags)) {
37  s->apply_window_fixed = ff_mpadsp_apply_window_fixed_neon;
38  s->apply_window_float = ff_mpadsp_apply_window_float_neon;
39  }
40 }
ff_mpadsp_apply_window_fixed_neon
void ff_mpadsp_apply_window_fixed_neon(int32_t *synth_buf, int32_t *window, int *dither, int16_t *samples, ptrdiff_t incr)
MPADSPContext
Definition: mpegaudiodsp.h:28
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:103
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:52
window
static SDL_Window * window
Definition: ffplay.c:364
av_cold
#define av_cold
Definition: attributes.h:90
s
#define s(width, name)
Definition: cbs_vp9.c:198
ff_mpadsp_apply_window_float_neon
void ff_mpadsp_apply_window_float_neon(float *synth_buf, float *window, int *dither, float *samples, ptrdiff_t incr)
have_neon
#define have_neon(flags)
Definition: cpu.h:26
attributes.h
ff_mpadsp_init_aarch64
av_cold void ff_mpadsp_init_aarch64(MPADSPContext *s)
Definition: mpegaudiodsp_init.c:32
samples
Filter the word “frame” indicates either a video frame or a group of audio samples
Definition: filter_design.txt:8
mpegaudiodsp.h
int32_t
int32_t
Definition: audioconvert.c:56
cpu.h
dither
static const uint8_t dither[8][8]
Definition: vf_fspp.c:60