1 files changed, 127 insertions, 0 deletions
diff --git a/OpenAL32/event.c b/OpenAL32/event.c
new file mode 100644
index 00000000..4c9c0be2
--- /dev/null
+++ b/OpenAL32/event.c
@@ -0,0 +1,127 @@
+
+#include "config.h"
+
+#include "AL/alc.h"
+#include "AL/al.h"
+#include "AL/alext.h"
+#include "alMain.h"
+#include "alError.h"
+#include "alAuxEffectSlot.h"
+#include "ringbuffer.h"
+
+
+int EventThread(void *arg)
+{
+    ALCcontext *context = arg;
+    bool quitnow = false;
+
+    while(!quitnow)
+    {
+        ALbitfieldSOFT enabledevts;
+        AsyncEvent evt;
+
+        if(ll_ringbuffer_read(context->AsyncEvents, (char*)&evt, 1) == 0)
+        {
+            alsem_wait(&context->EventSem);
+            continue;
+        }
+
+        almtx_lock(&context->EventCbLock);
+        do {
+            quitnow = evt.EnumType == EventType_KillThread;
+            if(quitnow) break;
+
+            if(evt.EnumType == EventType_ReleaseEffectState)
+            {
+                ALeffectState_DecRef(evt.u.EffectState);
+                continue;
+            }
+
+            enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_acquire);
+            if(context->EventCb && (enabledevts&evt.EnumType) == evt.EnumType)
+                context->EventCb(evt.u.user.type, evt.u.user.id, evt.u.user.param,
+                    (ALsizei)strlen(evt.u.user.msg), evt.u.user.msg, context->EventParam
+                );
+        } while(ll_ringbuffer_read(context->AsyncEvents, (char*)&evt, 1) != 0);
+        almtx_unlock(&context->EventCbLock);
+    }
+    return 0;
+}
+
+AL_API void AL_APIENTRY alEventControlSOFT(ALsizei count, const ALenum *types, ALboolean enable)
+{
+    ALCcontext *context;
+    ALbitfieldSOFT enabledevts;
+    ALbitfieldSOFT flags = 0;
+    ALsizei i;
+
+    context = GetContextRef();
+    if(!context) return;
+
+    if(count < 0) SETERR_GOTO(context, AL_INVALID_VALUE, done, "Controlling %d events", count);
+    if(count == 0) goto done;
+    if(!types) SETERR_GOTO(context, AL_INVALID_VALUE, done, "NULL pointer");
+
+    for(i = 0;i < count;i++)
+    {
+        if(types[i] == AL_EVENT_TYPE_BUFFER_COMPLETED_SOFT)
+            flags |= EventType_BufferCompleted;
+        else if(types[i] == AL_EVENT_TYPE_SOURCE_STATE_CHANGED_SOFT)
+            flags |= EventType_SourceStateChange;
+        else if(types[i] == AL_EVENT_TYPE_ERROR_SOFT)
+            flags |= EventType_Error;
+        else if(types[i] == AL_EVENT_TYPE_PERFORMANCE_SOFT)
+            flags |= EventType_Performance;
+        else if(types[i] == AL_EVENT_TYPE_DEPRECATED_SOFT)
+            flags |= EventType_Deprecated;
+        else if(types[i] == AL_EVENT_TYPE_DISCONNECTED_SOFT)
+            flags |= EventType_Disconnected;
+        else
+            SETERR_GOTO(context, AL_INVALID_ENUM, done, "Invalid event type 0x%04x", types[i]);
+    }
+
+    if(enable)
+    {
+        enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed);
+        while(ATOMIC_COMPARE_EXCHANGE_WEAK(&context->EnabledEvts, &enabledevts, enabledevts|flags,
+                                           almemory_order_acq_rel, almemory_order_acquire) == 0)
+        {
+            /* enabledevts is (re-)filled with the current value on failure, so
+             * just try again.
+             */
+        }
+    }
+    else
+    {
+        enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed);
+        while(ATOMIC_COMPARE_EXCHANGE_WEAK(&context->EnabledEvts, &enabledevts, enabledevts&~flags,
+                                           almemory_order_acq_rel, almemory_order_acquire) == 0)
+        {
+        }
+        /* Wait to ensure the event handler sees the changed flags before
+         * returning.
+         */
+        almtx_lock(&context->EventCbLock);
+        almtx_unlock(&context->EventCbLock);
+    }
+
+done:
+    ALCcontext_DecRef(context);
+}
+
+AL_API void AL_APIENTRY alEventCallbackSOFT(ALEVENTPROCSOFT callback, void *userParam)
+{
+    ALCcontext *context;
+
+    context = GetContextRef();
+    if(!context) return;
+
+    almtx_lock(&context->PropLock);
+    almtx_lock(&context->EventCbLock);
+    context->EventCb = callback;
+    context->EventParam = userParam;
+    almtx_unlock(&context->EventCbLock);
+    almtx_unlock(&context->PropLock);
+
+    ALCcontext_DecRef(context);
+}