FFmpeg  4.0
resample_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 <stdint.h>
20 
21 #include "config.h"
22 #include "libavutil/cpu.h"
23 #include "libavutil/aarch64/cpu.h"
24 #include "libavutil/internal.h"
25 #include "libavutil/samplefmt.h"
26 #include "libavresample/resample.h"
27 
28 #include "asm-offsets.h"
29 
30 AV_CHECK_OFFSET(struct ResampleContext, filter_bank, FILTER_BANK);
31 AV_CHECK_OFFSET(struct ResampleContext, filter_length, FILTER_LENGTH);
32 AV_CHECK_OFFSET(struct ResampleContext, phase_shift, PHASE_SHIFT);
33 AV_CHECK_OFFSET(struct ResampleContext, phase_mask, PHASE_MASK);
34 
35 void ff_resample_one_dbl_neon(struct ResampleContext *c, void *dst0,
36  int dst_index, const void *src0,
37  unsigned int index, int frac);
38 void ff_resample_one_flt_neon(struct ResampleContext *c, void *dst0,
39  int dst_index, const void *src0,
40  unsigned int index, int frac);
41 void ff_resample_one_s16_neon(struct ResampleContext *c, void *dst0,
42  int dst_index, const void *src0,
43  unsigned int index, int frac);
44 void ff_resample_one_s32_neon(struct ResampleContext *c, void *dst0,
45  int dst_index, const void *src0,
46  unsigned int index, int frac);
47 
49  enum AVSampleFormat sample_fmt)
50 {
52 
53  if (have_neon(cpu_flags)) {
54  if (!c->linear) {
55  switch (sample_fmt) {
56  case AV_SAMPLE_FMT_DBLP:
58  break;
59  case AV_SAMPLE_FMT_FLTP:
61  break;
62  case AV_SAMPLE_FMT_S16P:
64  break;
65  case AV_SAMPLE_FMT_S32P:
67  break;
68  }
69  }
70  }
71 }
float, planar
Definition: samplefmt.h:69
AV_CHECK_OFFSET(struct ResampleContext, filter_bank, FILTER_BANK)
double, planar
Definition: samplefmt.h:70
static atomic_int cpu_flags
Definition: cpu.c:50
#define FILTER_BANK
Definition: asm-offsets.h:23
void ff_resample_one_s16_neon(struct ResampleContext *c, void *dst0, int dst_index, const void *src0, unsigned int index, int frac)
#define PHASE_MASK
Definition: asm-offsets.h:26
#define av_cold
Definition: attributes.h:82
common internal API header
void ff_resample_one_flt_neon(struct ResampleContext *c, void *dst0, int dst_index, const void *src0, unsigned int index, int frac)
#define have_neon(flags)
Definition: cpu.h:26
signed 32 bits, planar
Definition: samplefmt.h:68
void ff_resample_one_s32_neon(struct ResampleContext *c, void *dst0, int dst_index, const void *src0, unsigned int index, int frac)
AVSampleFormat
Audio sample formats.
Definition: samplefmt.h:58
int index
Definition: gxfenc.c:89
#define src0
Definition: h264pred.c:138
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:93
#define FILTER_LENGTH
Definition: asm-offsets.h:24
void ff_resample_one_dbl_neon(struct ResampleContext *c, void *dst0, int dst_index, const void *src0, unsigned int index, int frac)
#define PHASE_SHIFT
Definition: asm-offsets.h:25
static double c[64]
void(* resample_one)(struct ResampleContext *c, void *dst0, int dst_index, const void *src0, unsigned int index, int frac)
Definition: resample.h:45
signed 16 bits, planar
Definition: samplefmt.h:67
av_cold void ff_audio_resample_init_aarch64(ResampleContext *c, enum AVSampleFormat sample_fmt)
Definition: resample_init.c:48