StGLTextureQueue::StGLTextureQueue(const size_t theQueueSizeMax)
: myDataFront(NULL),
myDataSnap(NULL),
myDataBack(NULL),
myQueueSize(0),
myQueueSizeMax(theQueueSizeMax),
mySwapFBCount(0),
myCurrSrcFormat(ST_V_SRC_MONO),
myCurrPts(0.0),
myNewShotEvent(false),
myIsInUpdTexture(false),
myIsReadyToSwap(false),
myToCompress(false),
myHasStream(false) {
ST_DEBUG_ASSERT(myQueueSizeMax >= 2);
// we create 'empty' queue
myDataFront = new StGLTextureData();
StGLTextureData* iter = myDataFront;
for(size_t i = 1; i < myQueueSizeMax; ++i) {
iter->setNext(new StGLTextureData());
iter = iter->getNext();
}
iter->setNext(myDataFront); // data in loop
myDataBack = myDataFront;
}
void StGLTextureQueue::clear() {
myMutexPop.lock();
myMutexPush.lock();
myMutexSize.lock();
mySwapFBMutex.lock();
// decrease StStereoSource counters
StGLTextureData* anIterFront = myDataFront;
for(size_t i = 0; i < myQueueSize; ++i, anIterFront = anIterFront->getNext()) {
anIterFront->resetStParams();
}
// reset queue
myQueueSize = 0;
myDataBack = myDataFront;
if(myDataSnap != NULL) {
myDataSnap->resetStParams();
}
myDataSnap = NULL;
mySwapFBCount = 0;
myIsReadyToSwap = false; // invalidate currently uploaded image in back buffer
// empty texture update sequence
myIsInUpdTexture = false;
mySwapFBMutex.unlock();
myMutexSize.unlock();
myMutexPush.unlock();
myMutexPop.unlock();
}
