1 files changed, 117 insertions, 0 deletions
diff --git a/al/eax/eax_call.h b/al/eax/eax_call.h
new file mode 100644
index 00000000..2c90bdc3
--- /dev/null
+++ b/al/eax/eax_call.h
@@ -0,0 +1,117 @@
+#ifndef EAX_EAX_CALL_INCLUDED
+#define EAX_EAX_CALL_INCLUDED
+
+
+#include "AL/al.h"
+
+#include "alspan.h"
+
+#include "api.h"
+#include "fx_slot_index.h"
+
+
+enum class EaxEaxCallPropertySetId
+{
+    none,
+
+    context,
+    fx_slot,
+    source,
+    fx_slot_effect,
+}; // EaxEaxCallPropertySetId
+
+
+class EaxEaxCall
+{
+public:
+    EaxEaxCall(
+        bool is_get,
+        const GUID& property_set_guid,
+        ALuint property_id,
+        ALuint property_source_id,
+        ALvoid* property_buffer,
+        ALuint property_size);
+
+    bool is_get() const noexcept { return is_get_; }
+    int get_version() const noexcept { return version_; }
+    EaxEaxCallPropertySetId get_property_set_id() const noexcept { return property_set_id_; }
+    ALuint get_property_id() const noexcept { return property_id_; }
+    ALuint get_property_al_name() const noexcept { return property_source_id_; }
+    EaxFxSlotIndex get_fx_slot_index() const noexcept { return fx_slot_index_; }
+
+    template<
+        typename TException,
+        typename TValue
+    >
+    TValue& get_value() const
+    {
+        if (property_size_ < static_cast<ALuint>(sizeof(TValue)))
+        {
+            throw TException{"Property buffer too small."};
+        }
+
+        return *static_cast<TValue*>(property_buffer_);
+    }
+
+    template<
+        typename TException,
+        typename TValue
+    >
+    al::span<TValue> get_values() const
+    {
+        if (property_size_ < static_cast<ALuint>(sizeof(TValue)))
+        {
+            throw TException{"Property buffer too small."};
+        }
+
+        const auto count = property_size_ / sizeof(TValue);
+
+        return al::span<TValue>{static_cast<TValue*>(property_buffer_), count};
+    }
+
+    template<
+        typename TException,
+        typename TValue
+    >
+    void set_value(
+        const TValue& value) const
+    {
+        get_value<TException, TValue>() = value;
+    }
+
+
+private:
+    const bool is_get_;
+    int version_;
+    EaxFxSlotIndex fx_slot_index_;
+    EaxEaxCallPropertySetId property_set_id_;
+
+    ALuint property_id_;
+    const ALuint property_source_id_;
+    ALvoid*const property_buffer_;
+    const ALuint property_size_;
+
+
+    [[noreturn]]
+    static void fail(
+        const char* message);
+
+
+    static ALuint convert_eax_v2_0_listener_property_id(
+        ALuint property_id);
+
+    static ALuint convert_eax_v2_0_buffer_property_id(
+        ALuint property_id);
+}; // EaxEaxCall
+
+
+EaxEaxCall create_eax_call(
+    bool is_get,
+    const GUID* property_set_id,
+    ALuint property_id,
+    ALuint property_source_id,
+    ALvoid* property_buffer,
+    ALuint property_size);
+
+
+#endif // !EAX_EAX_CALL_INCLUDED