blob: f128d0187e7f3688a7487c78cc6f288bd216bcf4 (
plain)
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
|
#include "sources/soundsourceproviderregistry.h"
#include "util/logger.h"
namespace mixxx {
namespace {
const Logger kLogger("SoundSourceProviderRegistry");
void insertRegistration(
QList<SoundSourceProviderRegistration>* pRegistrations,
SoundSourceProviderRegistration&& registration) {
DEBUG_ASSERT(pRegistrations);
QList<SoundSourceProviderRegistration>::iterator listIter(
pRegistrations->begin());
// Perform a linear search through the list & insert
while (pRegistrations->end() != listIter) {
// Priority comparison with <=: New registrations will be inserted
// before existing registrations with equal priority, but after
// existing registrations with higher priority.
if (listIter->getProviderPriority() <= registration.getProviderPriority()) {
listIter = pRegistrations->insert(listIter, std::move(registration));
DEBUG_ASSERT(pRegistrations->end() != listIter);
return; // done
} else {
++listIter; // continue loop
}
}
if (pRegistrations->end() == listIter) {
// List was empty or registration has the lowest priority
pRegistrations->append(std::move(registration));
}
}
} // anonymous namespace
int SoundSourceProviderRegistry::registerProvider(
const SoundSourceProviderPointer& pProvider) {
VERIFY_OR_DEBUG_ASSERT(pProvider) {
return 0;
}
const QString displayName = pProvider->getDisplayName();
VERIFY_OR_DEBUG_ASSERT(!displayName.isEmpty()) {
return 0;
}
kLogger.debug()
<< "Registering provider"
<< displayName;
{
// Due to the debug assertion this code is not testable
const auto pProviderByDisplayName = m_providersByDisplayName.value(displayName);
VERIFY_OR_DEBUG_ASSERT(!pProviderByDisplayName) {
if (pProviderByDisplayName == pProvider) {
kLogger.info()
<< "Ignoring repeated registration of the same provider"
<< displayName;
} else {
kLogger.warning()
<< "Cannot register different providers with the same display name"
<< displayName;
}
return 0;
}
}
const QStringList supportedFileExtensions(
pProvider->getSupportedFileExtensions());
if (supportedFileExtensions.isEmpty()) {
kLogger.warning()
<< "SoundSource provider"
<< displayName
<< "does not support any file extensions";
return 0; // abort registration
}
for (const auto& fileExtension : supportedFileExtensions) {
const auto priority =
pProvider->getPriorityHint(fileExtension);
kLogger.debug()
<< "Registering file extension"
<< fileExtension
<< "for provider"
<< displayName
<< "with priority"
<< priority;
SoundSourceProviderRegistration registration(pProvider, priority);
QList<SoundSourceProviderRegistration>& registrationsForFileExtension =
m_registrationListsByFileExtension[fileExtension];
insertRegistration(
®istrationsForFileExtension,
std::move(registration));
}
m_providersByDisplayName.insert(displayName, pProvider);
DEBUG_ASSERT(m_providersByDisplayName.count(displayName) == 1);
return supportedFileExtensions.size();
}
QList<SoundSourceProviderRegistration>
SoundSourceProviderRegistry::getRegistrationsForFileExtension(
const QString& fileExtension) const {
auto i = m_registrationListsByFileExtension.constFind(fileExtension);
if (m_registrationListsByFileExtension.constEnd() != i) {
DEBUG_ASSERT(!i.value().isEmpty());
return i.value();
} else {
kLogger.debug()
<< "No provider(s) registered for file extension"
<< fileExtension;
return QList<SoundSourceProviderRegistration>();
}
}
} // namespace mixxx
|
