very, very simple WP with midi CC out

2024-10-09 02:01:23 +02:00
commit 3d6fc151f1
126 changed files with 19539 additions and 0 deletions
@@ -0,0 +1,85 @@
+#pragma once
+#if __has_include(<dlfcn.h>)
+  #include <dlfcn.h>
+
+  #include <cassert>
+
+namespace libremidi
+{
+class dylib_loader
+{
+public:
+  explicit dylib_loader(const char* const so)
+  {
+    impl = dlopen(so, RTLD_LAZY | RTLD_LOCAL | RTLD_NODELETE);
+  }
+
+  dylib_loader(const dylib_loader&) noexcept = delete;
+  dylib_loader& operator=(const dylib_loader&) noexcept = delete;
+  dylib_loader(dylib_loader&& other) noexcept
+  {
+    impl = other.impl;
+    other.impl = nullptr;
+  }
+
+  dylib_loader& operator=(dylib_loader&& other) noexcept
+  {
+    impl = other.impl;
+    other.impl = nullptr;
+    return *this;
+  }
+
+  ~dylib_loader()
+  {
+    if (impl)
+    {
+      dlclose(impl);
+    }
+  }
+
+  template <typename T>
+  T symbol(const char* const sym) const noexcept
+  {
+    assert(impl);
+    return reinterpret_cast<T>(dlsym(impl, sym));
+  }
+
+  operator bool() const noexcept { return bool(impl); }
+
+private:
+  void* impl{};
+};
+
+}
+
+  #define LIBREMIDI_SYMBOL_NAME_S(prefix, name) #prefix "_" #name
+  #define LIBREMIDI_SYMBOL_NAME(prefix, name) prefix##_##name
+  #define LIBREMIDI_SYMBOL_DEF(prefix, name) \
+    decltype(&::LIBREMIDI_SYMBOL_NAME(prefix, name)) name{};
+  #define LIBREMIDI_SYMBOL_INIT(prefix, name)                                  \
+    {                                                                          \
+      name = library.symbol<decltype(&::LIBREMIDI_SYMBOL_NAME(prefix, name))>( \
+          LIBREMIDI_SYMBOL_NAME_S(prefix, name));                              \
+      if (!name)                                                               \
+      {                                                                        \
+        available = false;                                                     \
+        return;                                                                \
+      }                                                                        \
+    }
+
+// Because some libs have names that are C++ keywords, e.g. udev_new:
+  #define LIBREMIDI_SYMBOL_NAME2_S(prefix, name, varname) #prefix "_" #name
+  #define LIBREMIDI_SYMBOL_NAME2(prefix, name, varname) prefix##_##name
+  #define LIBREMIDI_SYMBOL_DEF2(prefix, name, varname) \
+    decltype(&::LIBREMIDI_SYMBOL_NAME2(prefix, name, varname)) varname{};
+  #define LIBREMIDI_SYMBOL_INIT2(prefix, name, varname)                                     \
+    {                                                                                       \
+      varname = library.symbol<decltype(&::LIBREMIDI_SYMBOL_NAME2(prefix, name, varname))>( \
+          LIBREMIDI_SYMBOL_NAME2_S(prefix, name, varname));                                 \
+      if (!varname)                                                                         \
+      {                                                                                     \
+        available = false;                                                                  \
+        return;                                                                             \
+      }                                                                                     \
+    }
+#endif