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     if(enable)
  41     {
  42         ALbitfieldSOFT enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed);
  43         while(ATOMIC_COMPARE_EXCHANGE_WEAK(&context->EnabledEvts, &enabledevts, enabledevts|flags,
  44                                            almemory_order_acq_rel, almemory_order_acquire) == 0)
  45         {
  46             /* enabledevts is (re-)filled with the current value on failure, so
  47              * just try again.
  48              */
  49         }
  50     }
  51     else
  52     {
  53         ALbitfieldSOFT enabledevts = ATOMIC_LOAD(&context->EnabledEvts, almemory_order_relaxed);
  54         while(ATOMIC_COMPARE_EXCHANGE_WEAK(&context->EnabledEvts, &enabledevts, enabledevts&~flags,
  55                                            almemory_order_acq_rel, almemory_order_acquire) == 0)
  56         {
  57         }
  58     }
  59
  60 done:
  61     ALCcontext_DecRef(context);
  62 }
  63
  64 AL_API void AL_APIENTRY alEventCallbackSOFT(ALEVENTPROCSOFT callback, void *userParam)
  65 {
  66     ALCcontext *context;
  67
  68     context = GetContextRef();
  69     if(!context) return;
  70
  71     almtx_lock(&context->EventCbLock);
  72     context->EventCb = callback;
  73     context->EventParam = userParam;
  74     almtx_unlock(&context->EventCbLock);
  75
  76     ALCcontext_DecRef(context);
  77 }