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resample_dsp.c
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1 /*
2  * audio resampling
3  * Copyright (c) 2004-2012 Michael Niedermayer <michaelni@gmx.at>
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  */
21 
22 /**
23  * @file
24  * audio resampling
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27 
28 #include "resample.h"
29 
30 #define TEMPLATE_RESAMPLE_S16
31 #include "resample_template.c"
32 #undef TEMPLATE_RESAMPLE_S16
33 
34 #define TEMPLATE_RESAMPLE_S32
35 #include "resample_template.c"
36 #undef TEMPLATE_RESAMPLE_S32
37 
38 #define TEMPLATE_RESAMPLE_FLT
39 #include "resample_template.c"
40 #undef TEMPLATE_RESAMPLE_FLT
41 
42 #define TEMPLATE_RESAMPLE_DBL
43 #include "resample_template.c"
44 #undef TEMPLATE_RESAMPLE_DBL
45 
47 {
48  switch(c->format){
49  case AV_SAMPLE_FMT_S16P:
50  c->dsp.resample_one = resample_one_int16;
51  c->dsp.resample = c->linear ? resample_linear_int16 : resample_common_int16;
52  break;
53  case AV_SAMPLE_FMT_S32P:
54  c->dsp.resample_one = resample_one_int32;
55  c->dsp.resample = c->linear ? resample_linear_int32 : resample_common_int32;
56  break;
57  case AV_SAMPLE_FMT_FLTP:
58  c->dsp.resample_one = resample_one_float;
59  c->dsp.resample = c->linear ? resample_linear_float : resample_common_float;
60  break;
61  case AV_SAMPLE_FMT_DBLP:
62  c->dsp.resample_one = resample_one_double;
63  c->dsp.resample = c->linear ? resample_linear_double : resample_common_double;
64  break;
65  }
66 
67  if (ARCH_X86) swri_resample_dsp_x86_init(c);
68  else if (ARCH_ARM) swri_resample_dsp_arm_init(c);
69 }
float, planar
Definition: samplefmt.h:69
audio resampling
double, planar
Definition: samplefmt.h:70
struct ResampleContext::@243 dsp
av_cold void swri_resample_dsp_arm_init(ResampleContext *c)
enum AVSampleFormat format
Definition: resample.h:48
void swri_resample_dsp_x86_init(ResampleContext *c)
Definition: resample_init.c:46
signed 32 bits, planar
Definition: samplefmt.h:68
void swri_resample_dsp_init(ResampleContext *c)
Definition: resample_dsp.c:46
int(* resample)(struct ResampleContext *c, void *dst, const void *src, int n, int update_ctx)
Definition: resample.h:56
void(* resample_one)(struct ResampleContext *c, void *dst0, int dst_index, const void *src0, unsigned int index, int frac)
Definition: resample.h:45
static double c[64]
signed 16 bits, planar
Definition: samplefmt.h:67