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
|
/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "AutoConvertFilterPlugin.hxx"
#include "ConvertFilterPlugin.hxx"
#include "FilterPlugin.hxx"
#include "FilterInternal.hxx"
#include "FilterRegistry.hxx"
#include "AudioFormat.hxx"
#include "ConfigData.hxx"
#include <assert.h>
class AutoConvertFilter final : public Filter {
/**
* The underlying filter.
*/
Filter *filter;
/**
* A convert_filter, just in case conversion is needed. nullptr
* if unused.
*/
Filter *convert;
public:
AutoConvertFilter(Filter *_filter):filter(_filter) {}
~AutoConvertFilter() {
delete filter;
}
virtual AudioFormat Open(AudioFormat &af, Error &error) override;
virtual void Close() override;
virtual const void *FilterPCM(const void *src, size_t src_size,
size_t *dest_size_r,
Error &error) override;
};
AudioFormat
AutoConvertFilter::Open(AudioFormat &in_audio_format, Error &error)
{
assert(in_audio_format.IsValid());
/* open the "real" filter */
const AudioFormat child_audio_format = in_audio_format;
AudioFormat out_audio_format = filter->Open(in_audio_format, error);
if (!out_audio_format.IsDefined())
return out_audio_format;
/* need to convert? */
if (in_audio_format != child_audio_format) {
/* yes - create a convert_filter */
const config_param empty;
convert = filter_new(&convert_filter_plugin, empty, error);
if (convert == nullptr) {
filter->Close();
return AudioFormat::Undefined();
}
AudioFormat audio_format2 = in_audio_format;
AudioFormat audio_format3 =
convert->Open(audio_format2, error);
if (!audio_format3.IsDefined()) {
delete convert;
filter->Close();
return AudioFormat::Undefined();
}
assert(audio_format2 == in_audio_format);
convert_filter_set(convert, child_audio_format);
} else
/* no */
convert = nullptr;
return out_audio_format;
}
void
AutoConvertFilter::Close()
{
if (convert != nullptr) {
convert->Close();
delete convert;
}
filter->Close();
}
const void *
AutoConvertFilter::FilterPCM(const void *src, size_t src_size,
size_t *dest_size_r, Error &error)
{
if (convert != nullptr) {
src = convert->FilterPCM(src, src_size, &src_size, error);
if (src == nullptr)
return nullptr;
}
return filter->FilterPCM(src, src_size, dest_size_r, error);
}
Filter *
autoconvert_filter_new(Filter *filter)
{
return new AutoConvertFilter(filter);
}
|
