libremidi update to v5.4.3 and added virtual midi out as default

2026-06-23 00:05:41 +02:00
parent dc0003232a
commit 51cd271b6f
166 changed files with 8135 additions and 2009 deletions
@@ -0,0 +1,173 @@
+#pragma once
+#include <libremidi/backends/kdmapi/config.hpp>
+#include <libremidi/backends/kdmapi/helpers.hpp>
+#include <libremidi/backends/kdmapi/observer.hpp>
+#include <libremidi/detail/midi_out.hpp>
+
+namespace libremidi::kdmapi
+{
+
+class midi_out final
+    : public midi1::out_api
+    , public error_handler
+{
+public:
+  struct
+      : libremidi::output_configuration
+      , kdmapi::output_configuration
+  {
+  } configuration;
+
+  midi_out(libremidi::output_configuration&& conf, kdmapi::output_configuration&& apiconf)
+      : configuration{std::move(conf), std::move(apiconf)}
+  {
+    auto& loader = kdmapi_loader::instance();
+    if (!loader.is_available())
+    {
+      libremidi_handle_error(
+          configuration, "KDMAPI is not available. Is OmniMIDI installed?");
+      this->client_open_ = std::errc::no_such_device;
+      return;
+    }
+
+    this->client_open_ = stdx::error{};
+  }
+
+  ~midi_out() override
+  {
+    midi_out::close_port();
+    this->client_open_ = std::errc::not_connected;
+  }
+
+  libremidi::API get_current_api() const noexcept override { return libremidi::API::KDMAPI; }
+
+  stdx::error open_port(const output_port& port, std::string_view) override
+  {
+    if (port.api != libremidi::API::KDMAPI)
+    {
+      libremidi_handle_error(configuration, "port is not a KDMAPI port");
+      return std::errc::invalid_argument;
+    }
+
+    return do_open();
+  }
+
+  stdx::error do_open()
+  {
+    auto& mgr = kdmapi_stream_manager::instance();
+    if (!mgr.acquire())
+    {
+      libremidi_handle_error(configuration, "failed to initialize KDMAPI stream");
+      return std::errc::io_error;
+    }
+
+    connected_ = true;
+    return stdx::error{};
+  }
+
+  stdx::error close_port() override
+  {
+    if (connected_)
+    {
+      auto& mgr = kdmapi_stream_manager::instance();
+      mgr.release();
+      connected_ = false;
+    }
+    return stdx::error{};
+  }
+
+  stdx::error send_message(const unsigned char* message, size_t size) override
+  {
+    if (!connected_)
+      return std::errc::not_connected;
+
+    if (size == 0)
+    {
+      libremidi_handle_warning(configuration, "message argument is empty!");
+      return std::errc::invalid_argument;
+    }
+
+    auto& loader = kdmapi_loader::instance();
+
+    if (message[0] == 0xF0)
+    {
+      // SysEx message
+      return send_sysex(message, size);
+    }
+    else
+    {
+      // Channel or system message
+      if (size > 3)
+      {
+        libremidi_handle_warning(
+            configuration, "message size is greater than 3 bytes (and not sysex)!");
+        return std::errc::message_size;
+      }
+
+      // Pack MIDI bytes into DWORD
+      DWORD packet = 0;
+      std::copy_n(message, size, reinterpret_cast<unsigned char*>(&packet));
+
+      // Send the message
+      if (configuration.use_no_buffer && loader.SendDirectDataNoBuf)
+        loader.SendDirectDataNoBuf(packet);
+      else
+        loader.SendDirectData(packet);
+    }
+
+    return stdx::error{};
+  }
+
+private:
+  stdx::error send_sysex(const unsigned char* message, size_t size)
+  {
+    auto& loader = kdmapi_loader::instance();
+
+    if (configuration.use_no_buffer && loader.SendDirectLongDataNoBuf)
+    {
+      // Use the no-buffer variant - it takes raw data directly
+      loader.SendDirectLongDataNoBuf(
+          const_cast<LPSTR>(reinterpret_cast<const char*>(message)), static_cast<DWORD>(size));
+      return stdx::error{};
+    }
+
+    // Standard path with MIDIHDR
+    buffer_.assign(message, message + size);
+
+    MIDIHDR sysex{};
+    sysex.lpData = reinterpret_cast<LPSTR>(buffer_.data());
+    sysex.dwBufferLength = static_cast<DWORD>(size);
+    sysex.dwFlags = 0;
+
+    if (loader.PrepareLongData)
+    {
+      UINT result = loader.PrepareLongData(&sysex, sizeof(MIDIHDR));
+      if (result != MMSYSERR_NOERROR)
+      {
+        libremidi_handle_error(configuration, "error preparing sysex header");
+        return std::errc::io_error;
+      }
+    }
+
+    if (loader.SendDirectLongData)
+    {
+      UINT result = loader.SendDirectLongData(&sysex, sizeof(MIDIHDR));
+      if (result != MMSYSERR_NOERROR)
+      {
+        libremidi_handle_error(configuration, "error sending sysex message");
+        // Still try to unprepare
+      }
+    }
+
+    if (loader.UnprepareLongData)
+    {
+      loader.UnprepareLongData(&sysex, sizeof(MIDIHDR));
+    }
+
+    return stdx::error{};
+  }
+
+  std::vector<char> buffer_;
+};
+
+}