Add EAX extensions (EAX 2.0-5.0, X-RAM) (#632)

* Add EAX extensions (EAX 2.0-5.0, X-RAM)

* Comment out C++17 leftovers

* Remove everything related to patching

* Update alsoftrc.sample

* Rewrite integration

* Fix GCC compilation under Linux

* Always reset EAX effect properties when loading it into FX slot

1 files changed, 28 insertions, 0 deletions

diff --git a/al/eax_effect.h b/al/eax_effect.h
new file mode 100644
index 00000000..23dbb73e
--- /dev/null
+++ b/al/eax_effect.h
@@ -0,0 +1,28 @@
+#ifndef EAX_EFFECT_INCLUDED
+#define EAX_EFFECT_INCLUDED
+
+
+#include <memory>
+
+#include "eax_eax_call.h"
+
+
+class EaxEffect
+{
+public:
+    EaxEffect() = default;
+
+    virtual ~EaxEffect() = default;
+
+
+    // Returns "true" if any immediated property was changed.
+    // [[nodiscard]]
+    virtual bool dispatch(
+        const EaxEaxCall& eax_call) = 0;
+}; // EaxEffect
+
+
+using EaxEffectUPtr = std::unique_ptr<EaxEffect>;
+
+
+#endif // !EAX_EFFECT_INCLUDED