Update OpenAL-soft to 1.21.1

libs/openal-soft/Alc/async_event.h

@@ -0,0 +1,49 @@
+#ifndef ALC_EVENT_H
+#define ALC_EVENT_H
+
+#include "almalloc.h"
+
+struct EffectState;
+enum class VChangeState;
+
+using uint = unsigned int;
+
+
+enum {
+    /* End event thread processing. */
+    EventType_KillThread = 0,
+
+    /* User event types. */
+    EventType_SourceStateChange = 1<<0,
+    EventType_BufferCompleted   = 1<<1,
+    EventType_Disconnected      = 1<<2,
+
+    /* Internal events. */
+    EventType_ReleaseEffectState = 65536,
+};
+
+struct AsyncEvent {
+    uint EnumType{0u};
+    union {
+        char dummy;
+        struct {
+            uint id;
+            VChangeState state;
+        } srcstate;
+        struct {
+            uint id;
+            uint count;
+        } bufcomp;
+        struct {
+            char msg[244];
+        } disconnect;
+        EffectState *mEffectState;
+    } u{};
+
+    AsyncEvent() noexcept = default;
+    constexpr AsyncEvent(uint type) noexcept : EnumType{type} { }
+
+    DISABLE_ALLOC()
+};
+
+#endif