OpenAL32/event.c

   1
   2 #include "config.h"
   3
   4 #include "AL/alc.h"
   5 #include "AL/al.h"
   6 #include "AL/alext.h"
   7 #include "alMain.h"
   8 #include "alError.h"
   9
  10
  11 AL_API void AL_APIENTRY alEventControlSOFT(ALsizei count, const ALenum *types, ALboolean enable)
  12 {
  13     ALCcontext *context;
  14     ALbitfieldSOFT flags = 0;
  15     ALsizei i;
  16
  17     context = GetContextRef();
  18     if(!context) return;
  19
  20     if(count < 0) SETERR_GOTO(context, AL_INVALID_VALUE, done, "Controlling %d events", count);
  21     if(count == 0) goto done;
  22     if(!types) SETERR_GOTO(context, AL_INVALID_VALUE, done, "NULL pointer");
  23
  24     for(i = 0;i < count;i++)
  25     {
  26         if(types[i] == AL_EVENT_TYPE_BUFFER_COMPLETED_SOFT)
  27             flags |= EventType_BufferCompleted;
  28         else if(types[i] == AL_EVENT_TYPE_SOURCE_STATE_CHANGED_SOFT)
  29             flags |= EventType_SourceStateChange;
  30         else if(types[i] == AL_EVENT_TYPE_ERROR_SOFT)
  31             flags |= EventType_Error;
  32         else if(types[i] == AL_EVENT_TYPE_PERFORMANCE_SOFT)
  33             flags |= EventType_Performance;
  34         else if(types[i] == AL_EVENT_TYPE_DEPRECATED_SOFT)
  35             flags |= EventType_Deprecated;
  36         else
  37             SETERR_GOTO(context, AL_INVALID_ENUM, done, "Invalid event type 0x%04x", types[i]);
  38     }
  39
  40     almtx_lock(&context->EventLock);
  41     if(enable)
  42     {
  43         ALbitfieldSOFT enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed);
  44         while(ATOMIC_COMPARE_EXCHANGE_WEAK(&context->EnabledEvts, &enabledevts, enabledevts|flags,
  45                                            almemory_order_acq_rel, almemory_order_acquire) == 0)
  46         {
  47             /* enabledevts is (re-)filled with the current value on failure, so
  48              * just try again.
  49              */
  50         }
  51     }
  52     else
  53     {
  54         ALbitfieldSOFT enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed);
  55         while(ATOMIC_COMPARE_EXCHANGE_WEAK(&context->EnabledEvts, &enabledevts, enabledevts&~flags,
  56                                            almemory_order_acq_rel, almemory_order_acquire) == 0)
  57         {
  58         }
  59     }
  60     almtx_unlock(&context->EventLock);
  61
  62 done:
  63     ALCcontext_DecRef(context);
  64 }
  65
  66 AL_API void AL_APIENTRY alEventCallbackSOFT(ALEVENTPROCSOFT callback, void *userParam)
  67 {
  68     ALCcontext *context;
  69
  70     context = GetContextRef();
  71     if(!context) return;
  72
  73     almtx_lock(&context->EventLock);
  74     context->EventCb = callback;
  75     context->EventParam = userParam;
  76     almtx_unlock(&context->EventLock);
  77
  78     ALCcontext_DecRef(context);
  79 }