Initial work for depacketizer

limelight-common/LinkedBlockingQueue.cpp

@@ -0,0 +1,84 @@
+#include "LinkedBlockingQueue.h"
+
+int initializeLinkedBlockingQueue(PLINKED_BLOCKING_QUEUE queueHead, int sizeBound) {
+	int err;
+	
+	err = PltCreateEvent(&queueHead->containsDataEvent);
+	if (err != 0) {
+		return err;
+	}
+
+	err = PltCreateMutex(&queueHead->mutex);
+	if (err != 0) {
+		return err;
+	}
+
+	queueHead->head = NULL;
+	queueHead->sizeBound = sizeBound;
+
+	return 0;
+}
+
+int offerQueueItem(PLINKED_BLOCKING_QUEUE queueHead, void* data) {
+	PLINKED_BLOCKING_QUEUE_ENTRY entry, lastEntry;
+
+	entry = (PLINKED_BLOCKING_QUEUE_ENTRY) malloc(sizeof(*entry));
+	if (entry == NULL) {
+		return 0;
+	}
+
+	entry->next = NULL;
+	entry->data = data;
+
+	PltLockMutex(queueHead->mutex);
+
+	if (queueHead->head == NULL) {
+		queueHead->head = entry;
+	}
+	else {
+		lastEntry = queueHead->head;
+		while (lastEntry->next != NULL) {
+			lastEntry = lastEntry->next;
+		}
+		lastEntry->next = entry;
+	}
+
+	PltSetEvent(queueHead->containsDataEvent);
+
+	PltUnlockMutex(queueHead->mutex);
+
+	return 1;
+}
+
+void* waitForQueueElement(PLINKED_BLOCKING_QUEUE queueHead) {
+	PLINKED_BLOCKING_QUEUE_ENTRY entry;
+	void* data;
+
+	for (;;) {
+		PltWaitForEvent(queueHead->containsDataEvent);
+
+		PltLockMutex(queueHead->mutex);
+
+		if (queueHead->head == NULL) {
+			PltUnlockMutex(queueHead->mutex);
+			continue;
+		}
+
+		entry = queueHead->head;
+		queueHead->head = entry->next;
+
+		data = entry->data;
+
+		free(entry);
+
+		if (queueHead->head == NULL) {
+			PltClearEvent(queueHead->containsDataEvent);
+		}
+
+		PltUnlockMutex(queueHead->mutex);
+
+		break;
+	}
+
+	return data;
+}