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
|
/*
* Copyright 2011 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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 3, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "gr_audio_registry.h"
#include <boost/foreach.hpp>
#include <gr_prefs.h>
#include <stdexcept>
#include <vector>
#include <iostream>
/***********************************************************************
* Create registries
**********************************************************************/
struct source_entry_t{
reg_prio_type prio;
std::string arch;
source_factory_t source;
};
static std::vector<source_entry_t> &get_source_registry(void){
static std::vector<source_entry_t> _registry;
return _registry;
}
struct sink_entry_t{
reg_prio_type prio;
std::string arch;
sink_factory_t sink;
};
static std::vector<sink_entry_t> &get_sink_registry(void){
static std::vector<sink_entry_t> _registry;
return _registry;
}
/***********************************************************************
* Register functions
**********************************************************************/
void audio_register_source(
reg_prio_type prio, const std::string &arch, source_factory_t source
){
source_entry_t entry;
entry.prio = prio;
entry.arch = arch;
entry.source = source;
get_source_registry().push_back(entry);
}
void audio_register_sink(
reg_prio_type prio, const std::string &arch, sink_factory_t sink
){
sink_entry_t entry;
entry.prio = prio;
entry.arch = arch;
entry.sink = sink;
get_sink_registry().push_back(entry);
}
/***********************************************************************
* Factory functions
**********************************************************************/
static std::string default_arch_name(void){
return gr_prefs::singleton()->get_string("audio", "audio_module", "auto");
}
static void do_arch_warning(const std::string &arch){
if (arch == "auto") return; //no warning when arch not specified
std::cerr << "Could not find audio architecture \"" << arch << "\" in registry." << std::endl;
std::cerr << " Defaulting to the first available architecture..." << std::endl;
}
audio_source::sptr audio_make_source(
int sampling_rate,
const std::string device_name,
bool ok_to_block
){
if (get_source_registry().empty()){
throw std::runtime_error("no available audio source factories");
}
std::string arch = default_arch_name();
source_entry_t entry = get_source_registry().front();
BOOST_FOREACH(const source_entry_t &e, get_source_registry()){
if (e.prio > entry.prio) entry = e; //entry is highest prio
if (arch != e.arch) continue; //continue when no match
return e.source(sampling_rate, device_name, ok_to_block);
}
//std::cout << "Audio source arch: " << entry.name << std::endl;
return entry.source(sampling_rate, device_name, ok_to_block);
}
audio_sink::sptr audio_make_sink(
int sampling_rate,
const std::string device_name,
bool ok_to_block
){
if (get_sink_registry().empty()){
throw std::runtime_error("no available audio sink factories");
}
std::string arch = default_arch_name();
sink_entry_t entry = get_sink_registry().front();
BOOST_FOREACH(const sink_entry_t &e, get_sink_registry()){
if (e.prio > entry.prio) entry = e; //entry is highest prio
if (arch != e.arch) continue; //continue when no match
return e.sink(sampling_rate, device_name, ok_to_block);
}
do_arch_warning(arch);
//std::cout << "Audio sink arch: " << entry.name << std::endl;
return entry.sink(sampling_rate, device_name, ok_to_block);
}
|
