Sebastian @ HfG
64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
#if defined(__EMSCRIPTEN__)
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#include <libremidi/backends/emscripten/midi_access.hpp>
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#include <libremidi/backends/emscripten/midi_out.hpp>
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namespace libremidi
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{
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LIBREMIDI_INLINE midi_out_emscripten::midi_out_emscripten(
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output_configuration&& conf, emscripten_output_configuration&& apiconf)
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: configuration{std::move(conf), std::move(apiconf)}
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{
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client_open_ = stdx::error{};
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}
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LIBREMIDI_INLINE midi_out_emscripten::~midi_out_emscripten()
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{
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// Close a connection if it exists.
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midi_out_emscripten::close_port();
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client_open_ = std::errc::not_connected;
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}
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LIBREMIDI_INLINE libremidi::API midi_out_emscripten::get_current_api() const noexcept
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{
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return libremidi::API::WEBMIDI;
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}
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LIBREMIDI_INLINE stdx::error midi_out_emscripten::open_port(int portNumber, std::string_view)
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{
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auto& midi = webmidi_helpers::midi_access_emscripten::instance();
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if (portNumber >= midi.output_count())
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{
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libremidi_handle_error(
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this->configuration, "no MIDI output sources found.");
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return std::errc::invalid_argument;
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}
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portNumber_ = portNumber;
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return stdx::error{};
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}
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LIBREMIDI_INLINE stdx::error midi_out_emscripten::open_port(const output_port& p, std::string_view nm)
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{
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return open_port(p.port, nm);
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}
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LIBREMIDI_INLINE stdx::error midi_out_emscripten::close_port() {
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return stdx::error{};
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}
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LIBREMIDI_INLINE stdx::error midi_out_emscripten::send_message(const unsigned char* message, size_t size)
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{
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if (portNumber_ < 0)
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libremidi_handle_error(
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this->configuration,
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"trying to send a message without an open "
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"port.");
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webmidi_helpers::midi_access_emscripten::instance().send_message(
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portNumber_, reinterpret_cast<const char*>(message), size);
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return stdx::error{};
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}
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}
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#endif
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