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 +1,126 @@
+#pragma once
+#include <libremidi/backends/android/config.hpp>
+#include <libremidi/backends/android/helpers.hpp>
+#include <libremidi/detail/midi_out.hpp>
+
+NAMESPACE_LIBREMIDI
+{
+namespace android
+{
+class midi_out final
+    : public midi1::out_api
+    , public error_handler
+{
+public:
+  explicit midi_out(
+      libremidi::output_configuration&& conf, libremidi::android::output_configuration aconf)
+      : configuration{std::move(conf)}
+  {
+    if (!context::client_name.empty() && context::client_name != aconf.client_name)
+    {
+      libremidi_handle_error(
+          configuration, "Android backend only supports one client name per process");
+      return;
+    }
+    context::client_name = std::string(aconf.client_name);
+    client_open_ = stdx::error{};
+  }
+
+  ~midi_out() override { close_port(); }
+
+  libremidi::API get_current_api() const noexcept override
+  {
+    return libremidi::API::ANDROID_AMIDI;
+  }
+
+  stdx::error open_port(const output_port& port, std::string_view /*name*/) override
+  {
+    if (is_port_open())
+    {
+      libremidi_handle_error(configuration, "midi_out::open_port: a port is already open");
+      return std::errc{};
+    }
+
+    const unsigned int port_number = port.port;
+
+    auto env = context::get_thread_env();
+    if (!env)
+    {
+      libremidi_handle_error(configuration, "midi_out::open_port: failed to get JNI environment");
+      return std::errc{};
+    }
+
+    auto ctx = context::get_context(env);
+    if (!ctx)
+    {
+      libremidi_handle_error(configuration, "midi_out::open_port: failed to get Android context");
+      return std::errc{};
+    }
+
+    context::refresh_midi_devices(env, ctx, true);
+
+    if (port_number >= context::midi_devices.size())
+    {
+      libremidi_handle_error(configuration, "midi_out::open_port: invalid port number");
+      return std::errc{};
+    }
+
+    port_open = true;
+    context::open_device(context::midi_devices[port_number], this, true);
+    return stdx::error{};
+  }
+
+  stdx::error close_port() override
+  {
+    if (!is_port_open())
+      return std::errc{};
+
+    if (midi_input_port)
+    {
+      AMidiInputPort_close(midi_input_port);
+      midi_input_port = nullptr;
+    }
+
+    if (send_device)
+    {
+      AMidiDevice_release(send_device);
+      send_device = nullptr;
+    }
+
+    port_open = false;
+    return stdx::error{};
+  }
+
+  bool is_port_open() const noexcept { return port_open; }
+
+  stdx::error send_message(const unsigned char* message, size_t size) override
+  {
+    if (!is_port_open() || !midi_input_port)
+    {
+      libremidi_handle_error(configuration, "midi_out::send_message: port is not open");
+      return std::errc{};
+    }
+
+    ssize_t result = AMidiInputPort_send(midi_input_port, message, size);
+    if (result < 0)
+    {
+      libremidi_handle_error(configuration, "midi_out::send_message: failed to send MIDI data");
+      return std::errc{};
+    }
+    return stdx::error{};
+  }
+
+  static void open_callback(midi_out* self, AMidiDevice* device)
+  {
+    self->send_device = device;
+    AMidiInputPort_open(device, 0, &self->midi_input_port);
+  }
+
+private:
+  libremidi::output_configuration configuration;
+  AMidiDevice* send_device = nullptr;
+  AMidiInputPort* midi_input_port = nullptr;
+  bool port_open = false;
+};
+}
+}