diff --git a/vision/PacketNotifier.h b/vision/PacketNotifier.h
new file mode 100644
index 0000000..7aff7fa
--- /dev/null
+++ b/vision/PacketNotifier.h
@@ -0,0 +1,45 @@
+#ifndef FRC971_VISION_PACKET_NOTIFIER_H_
+#define FRC971_VISION_PACKET_NOTIFIER_H_
+#include "event2/buffer.h"
+#include "event2/event.h"
+#include "event2/listener.h"
+#include "event2/bufferevent.h"
+#include "aos/common/mutex.h"
+
+#include <sys/types.h> 
+#include <sys/socket.h>
+
+namespace frc971 {
+namespace vision {
+
+/* This class lives in shared memory (using an anonomous mmap) to transfer data between
+ * the server process and the image processing process.
+ */
+struct PacketNotifier{
+ aos::Mutex mutex;
+ int fd[2];
+ //3 things can be happening:
+ //something waiting to be sent, something sending, and something getting filled (decompressed to)
+ void *buffs[3];
+ int to_send;
+ int filling;
+ int sending;
+ bool in_flight;
+ size_t data_size;
+ void Notify();
+ void RegisterSender();
+ void RegisterReciever();
+ int RecieverFD(){ return fd[1]; }
+ static PacketNotifier *MMap(size_t data_size);
+ void DataSent(const void * /*data*/, size_t /*datalen*/);
+ void *GetBuffer();
+ static void StaticDataSent(const void *data, size_t datalen, void *self){
+	 ((PacketNotifier *)(self))->DataSent(data,datalen);
+ }
+ bool GetData(char **place_to_put,size_t *length);
+};
+}  // namespace vision
+}  // namespace frc971
+
+
+#endif  //FRC971_VISION_PACKET_NOTIFIER_H_