1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
/*
* Copyright (C) 2011 Michael Niedermayer (michaelni@gmx.at)
*
* This file is part of libswresample
*
* libswresample is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* libswresample is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with libswresample; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/avassert.h"
#include "libavutil/common.h"
#include "libavutil/audioconvert.h"
#include "swresample.h"
#undef fprintf
#define SAMPLES 1000
#define ASSERT_LEVEL 2
static double get(const uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f){
const uint8_t *p;
if(f>=0x100){
f&=0xFF;
p= a[ch];
}else{
p= a[0];
index= ch + index*ch_count;
}
switch(f){
case AV_SAMPLE_FMT_U8 : return ((const uint8_t*)p)[index]/255.0*2-1.0;
case AV_SAMPLE_FMT_S16: return ((const int16_t*)p)[index]/32767.0;
case AV_SAMPLE_FMT_S32: return ((const int32_t*)p)[index]/2147483647.0;
case AV_SAMPLE_FMT_FLT: return ((const float *)p)[index];
case AV_SAMPLE_FMT_DBL: return ((const double *)p)[index];
default: av_assert0(0);
}
}
static void set(uint8_t *a[], int ch, int index, int ch_count, enum AVSampleFormat f, double v){
uint8_t *p;
if(f>=0x100){
f&=0xFF;
p= a[ch];
}else{
p= a[0];
index= ch + index*ch_count;
}
switch(f){
case AV_SAMPLE_FMT_U8 : ((uint8_t*)p)[index]= (v+1.0)*255.0/2; break;
case AV_SAMPLE_FMT_S16: ((int16_t*)p)[index]= v*32767; break;
case AV_SAMPLE_FMT_S32: ((int32_t*)p)[index]= v*2147483647; break;
case AV_SAMPLE_FMT_FLT: ((float *)p)[index]= v; break;
case AV_SAMPLE_FMT_DBL: ((double *)p)[index]= v; break;
default: av_assert2(0);
}
}
uint64_t layouts[]={
AV_CH_LAYOUT_MONO ,
AV_CH_LAYOUT_STEREO ,
AV_CH_LAYOUT_2_1 ,
AV_CH_LAYOUT_SURROUND ,
AV_CH_LAYOUT_4POINT0 ,
AV_CH_LAYOUT_2_2 ,
AV_CH_LAYOUT_QUAD ,
AV_CH_LAYOUT_5POINT0 ,
AV_CH_LAYOUT_5POINT1 ,
AV_CH_LAYOUT_5POINT0_BACK ,
AV_CH_LAYOUT_5POINT1_BACK ,
AV_CH_LAYOUT_7POINT0 ,
AV_CH_LAYOUT_7POINT1 ,
AV_CH_LAYOUT_7POINT1_WIDE ,
0
};
static void setup_array(uint8_t *out[SWR_CH_MAX], uint8_t *in, enum AVSampleFormat format, int samples){
if(format >= 0x100){
int i;
int plane_size= av_get_bytes_per_sample(format&0xFF)*samples;
format&=0xFF;
for(i=0; i<SWR_CH_MAX; i++){
out[i]= in + i*plane_size;
}
}else{
out[0]= in;
}
}
int main(int argc, char **argv){
int in_sample_rate, out_sample_rate, ch ,i, in_ch_layout_index, out_ch_layout_index, osr, flush_count;
uint64_t in_ch_layout, out_ch_layout;
enum AVSampleFormat in_sample_fmt, out_sample_fmt;
int sample_rates[]={8000,11025,16000,22050,32000};
uint8_t array_in[SAMPLES*8*8];
uint8_t array_mid[SAMPLES*8*8*3];
uint8_t array_out[SAMPLES*8*8+100];
uint8_t *ain[SWR_CH_MAX];
uint8_t *aout[SWR_CH_MAX];
uint8_t *amid[SWR_CH_MAX];
int planar_in=256, planar_out=256;
struct SwrContext * forw_ctx= NULL;
struct SwrContext *backw_ctx= NULL;
in_sample_rate=16000;
for(osr=0; osr<5; osr++){
out_sample_rate= sample_rates[osr];
for(in_sample_fmt= AV_SAMPLE_FMT_U8; in_sample_fmt<=AV_SAMPLE_FMT_DBL; in_sample_fmt++){
for(out_sample_fmt= AV_SAMPLE_FMT_U8; out_sample_fmt<=AV_SAMPLE_FMT_DBL; out_sample_fmt++){
for(in_ch_layout_index=0; layouts[in_ch_layout_index]; in_ch_layout_index++){
in_ch_layout= layouts[in_ch_layout_index];
int in_ch_count= av_get_channel_layout_nb_channels(in_ch_layout);
for(out_ch_layout_index=0; layouts[out_ch_layout_index]; out_ch_layout_index++){
int out_count, mid_count;
out_ch_layout= layouts[out_ch_layout_index];
int out_ch_count= av_get_channel_layout_nb_channels(out_ch_layout);
fprintf(stderr, "ch %d->%d, rate:%5d->%5d, fmt:%s->%s",
in_ch_count, out_ch_count,
in_sample_rate, out_sample_rate,
av_get_sample_fmt_name(in_sample_fmt), av_get_sample_fmt_name(out_sample_fmt));
forw_ctx = swr_alloc_set_opts(forw_ctx, out_ch_layout, out_sample_fmt+planar_out, out_sample_rate,
in_ch_layout, in_sample_fmt+planar_in , in_sample_rate,
0, 0);
backw_ctx = swr_alloc_set_opts(backw_ctx, in_ch_layout, in_sample_fmt, in_sample_rate,
out_ch_layout, out_sample_fmt+planar_out, out_sample_rate,
0, 0);
if(swr_init( forw_ctx) < 0)
fprintf(stderr, "swr_init(->) failed\n");
if(swr_init(backw_ctx) < 0)
fprintf(stderr, "swr_init(<-) failed\n");
if(!forw_ctx)
fprintf(stderr, "Failed to init forw_cts\n");
if(!backw_ctx)
fprintf(stderr, "Failed to init backw_ctx\n");
//FIXME test planar
setup_array(ain , array_in , in_sample_fmt+planar_in , SAMPLES);
setup_array(amid, array_mid, out_sample_fmt+planar_out, 3*SAMPLES);
setup_array(aout, array_out, in_sample_fmt , SAMPLES);
for(ch=0; ch<in_ch_count; ch++){
for(i=0; i<SAMPLES; i++)
set(ain, ch, i, in_ch_count, in_sample_fmt+planar_in, sin(i*i*3/SAMPLES));
}
mid_count= swr_convert(forw_ctx, amid, 3*SAMPLES, ain, SAMPLES);
out_count= swr_convert(backw_ctx,aout, SAMPLES, amid, mid_count);
for(ch=0; ch<in_ch_count; ch++){
double sse, x, maxdiff=0;
double sum_a= 0;
double sum_b= 0;
double sum_aa= 0;
double sum_bb= 0;
double sum_ab= 0;
for(i=0; i<out_count; i++){
double a= get(ain , ch, i, in_ch_count, in_sample_fmt+planar_in);
double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
sum_a += a;
sum_b += b;
sum_aa+= a*a;
sum_bb+= b*b;
sum_ab+= a*b;
maxdiff= FFMAX(maxdiff, FFABS(a-b));
}
x = sum_ab/sum_bb;
sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/out_count), x, maxdiff, out_count);
}
flush_count=swr_convert(backw_ctx,aout, SAMPLES, 0, 0);
if(flush_count){
for(ch=0; ch<in_ch_count; ch++){
double sse, x, maxdiff=0;
double sum_a= 0;
double sum_b= 0;
double sum_aa= 0;
double sum_bb= 0;
double sum_ab= 0;
for(i=0; i<flush_count; i++){
double a= get(ain , ch, i+out_count, in_ch_count, in_sample_fmt+planar_in);
double b= get(aout, ch, i, in_ch_count, in_sample_fmt);
sum_a += a;
sum_b += b;
sum_aa+= a*a;
sum_bb+= b*b;
sum_ab+= a*b;
maxdiff= FFMAX(maxdiff, FFABS(a-b));
}
x = sum_ab/sum_bb;
sse= sum_aa + sum_bb*x*x - 2*x*sum_ab;
fprintf(stderr, "[%f %f %f] len:%5d\n", sqrt(sse/flush_count), x, maxdiff, flush_count);
}
}
fprintf(stderr, "\n");
}
}
}
}
}
return 0;
}
|
