96 lines
2.4 KiB
C++
96 lines
2.4 KiB
C++
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#pragma once
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#include <libremidi/cmidi2.hpp>
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#include <libremidi/detail/midi_api.hpp>
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#include <libremidi/output_configuration.hpp>
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#include <string_view>
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namespace libremidi
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{
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class midi_out_api : public midi_api
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{
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public:
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midi_out_api() = default;
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~midi_out_api() override = default;
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midi_out_api(const midi_out_api&) = delete;
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midi_out_api(midi_out_api&&) = delete;
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midi_out_api& operator=(const midi_out_api&) = delete;
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midi_out_api& operator=(midi_out_api&&) = delete;
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[[nodiscard]] virtual bool open_port(const output_port& pt, std::string_view local_port_name)
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= 0;
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[[nodiscard]] virtual int64_t current_time() const noexcept { return 0; }
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virtual void send_message(const unsigned char* message, std::size_t size) = 0;
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virtual void schedule_message(int64_t /*ts*/, const unsigned char* message, std::size_t size)
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{
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return send_message(message, size);
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}
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virtual void send_ump(const uint32_t* message, std::size_t size) = 0;
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virtual void schedule_ump(int64_t /*ts*/, const uint32_t* ump, std::size_t size)
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{
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return send_ump(ump, size);
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}
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};
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namespace midi1
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{
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class out_api : public midi_out_api
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{
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friend struct midi_stream_decoder;
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public:
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using midi_out_api::midi_out_api;
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void send_ump(const uint32_t* message, std::size_t /*size*/)
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{
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uint8_t midi[65536];
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const auto n
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= cmidi2_convert_single_ump_to_midi1(midi, sizeof(midi), const_cast<uint32_t*>(message));
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if (n > 0)
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send_message(midi, n);
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}
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};
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}
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namespace midi2
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{
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class out_api : public midi_out_api
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{
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friend struct midi_stream_decoder;
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public:
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using midi_out_api::midi_out_api;
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void send_message(const unsigned char* message, std::size_t size)
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{
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cmidi2_midi_conversion_context context{};
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cmidi2_midi_conversion_context_initialize(&context);
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uint32_t ump[65536 / 4];
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context.midi1 = const_cast<unsigned char*>(message);
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context.midi1_num_bytes = size;
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context.midi1_proceeded_bytes = 0;
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context.ump = ump;
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context.ump_num_bytes = sizeof(ump);
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context.ump_proceeded_bytes = 0;
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if (auto res = cmidi2_convert_midi1_to_ump(&context); res != CMIDI2_CONVERSION_RESULT_OK)
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return;
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send_ump(context.ump, context.ump_proceeded_bytes / 4);
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}
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};
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}
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template <typename T, typename Arg>
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std::unique_ptr<midi_out_api> make(libremidi::output_configuration&& conf, Arg&& arg)
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{
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return std::make_unique<T>(std::move(conf), std::forward<Arg>(arg));
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}
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}
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