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GenericUMPConverter: Implement using variant

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reuk 2025-04-01 19:14:29 +01:00
parent 71b1d001de
commit 444eb0c85e
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1 changed files with 33 additions and 14 deletions
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47
modules/juce_audio_basics/midi/ump/juce_UMPConverters.h
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@ -54,6 +54,8 @@ namespace juce::universal_midi_packets
{
Conversion::midi2ToMidi1DefaultTranslation (v, std::forward<Fn> (fn));
}
void reset() {}
};
/**
@ -97,22 +99,24 @@ namespace juce::universal_midi_packets
*/
class GenericUMPConverter
{
template <typename This, typename... Args>
static void visit (This& t, Args&&... args)
using Converters = std::variant<ToUMP1Converter, ToUMP2Converter>;
template <typename This, typename Fn>
static void visit (This& t, Fn&& fn)
{
if (t.mode == PacketProtocol::MIDI_1_0)
convertImpl (std::get<0> (t.converters), std::forward<Args> (args)...);
else
convertImpl (std::get<1> (t.converters), std::forward<Args> (args)...);
if (auto* converter1 = std::get_if<ToUMP1Converter> (&t.converters))
fn (*converter1);
else if (auto* converter2 = std::get_if<ToUMP2Converter> (&t.converters))
fn (*converter2);
}
public:
explicit GenericUMPConverter (PacketProtocol m)
: mode (m) {}
: converters (m == PacketProtocol::MIDI_1_0 ? Converters (ToUMP1Converter()) : Converters (ToUMP2Converter())) {}
void reset()
{
std::get<1> (converters).reset();
visit (*this, [] (auto& c) { c.reset(); });
}
template <typename Converter, typename Fn>
@ -136,29 +140,44 @@ namespace juce::universal_midi_packets
});
}
template <typename Converter, typename Fn>
static void convertImpl (Converter& converter, const Packets& packets, Fn&& fn)
{
convertImpl (converter, packets.begin(), packets.end(), std::forward<Fn> (fn));
}
template <typename Fn>
void convert (const BytesOnGroup& m, Fn&& fn)
{
visit (*this, m, std::forward<Fn> (fn));
visit (*this, [&] (auto& c) { convertImpl (c, m, std::forward<Fn> (fn)); });
}
template <typename Fn>
void convert (const View& v, Fn&& fn)
{
visit (*this, v, std::forward<Fn> (fn));
visit (*this, [&] (auto& c) { convertImpl (c, v, std::forward<Fn> (fn)); });
}
template <typename Fn>
void convert (Iterator begin, Iterator end, Fn&& fn)
{
visit (*this, begin, end, std::forward<Fn> (fn));
visit (*this, [&] (auto& c) { convertImpl (c, begin, end, std::forward<Fn> (fn)); });
}
PacketProtocol getProtocol() const noexcept { return mode; }
template <typename Fn>
void convert (const Packets& packets, Fn&& fn)
{
visit (*this, [&] (auto& c) { convertImpl (c, packets, std::forward<Fn> (fn)); });
}
PacketProtocol getProtocol() const noexcept
{
return std::holds_alternative<ToUMP1Converter> (converters) ? PacketProtocol::MIDI_1_0
: PacketProtocol::MIDI_2_0;
}
private:
std::tuple<ToUMP1Converter, ToUMP2Converter> converters;
const PacketProtocol mode{};
Converters converters;
};
/**