//ZoneMinder Packet Queue Interface Class
//Copyright 2016 Steve Gilvarry
//
//This file is part of ZoneMinder.
//
//ZoneMinder is free software: you can redistribute it and/or modify
//it under the terms of the GNU General Public License as published by
//the Free Software Foundation, either version 3 of the License, or
//(at your option) any later version.
//
//ZoneMinder is distributed in the hope that it will be useful,
//but WITHOUT ANY WARRANTY; without even the implied warranty of
//MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
//GNU General Public License for more details.
//
//You should have received a copy of the GNU General Public License
//along with ZoneMinder. If not, see .
#ifndef ZM_PACKETQUEUE_H
#define ZM_PACKETQUEUE_H
#include
#include
#include
#include
class ZMPacket;
class ZMLockedPacket;
typedef std::list>::iterator packetqueue_iterator;
class PacketQueue {
public: // For now just to ease development
std::list> pktQueue;
std::list>::iterator analysis_it;
int video_stream_id;
int max_video_packet_count; // allow a negative value to someday mean unlimited
// This is now a hard limit on the # of video packets to keep in the queue so that we can limit ram
int pre_event_video_packet_count; // Was max_video_packet_count
int max_stream_id;
int *packet_counts; /* packet count for each stream_id, to keep track of how many video vs audio packets are in the queue */
bool deleting;
bool keep_keyframes;
std::list iterators;
std::mutex mutex;
std::condition_variable condition;
public:
PacketQueue();
virtual ~PacketQueue();
std::list>::const_iterator end() const { return pktQueue.end(); }
std::list>::const_iterator begin() const { return pktQueue.begin(); }
int addStream();
void setMaxVideoPackets(int p);
void setPreEventVideoPackets(int p);
void setKeepKeyframes(bool k) { keep_keyframes = k; };
bool queuePacket(std::shared_ptr packet);
void clear();
void dumpQueue();
unsigned int size();
unsigned int get_packet_count(int stream_id) const { return packet_counts[stream_id]; };
void clearPackets(const std::shared_ptr &packet);
int packet_count(int stream_id);
bool increment_it(packetqueue_iterator *it);
bool increment_it(packetqueue_iterator *it, int stream_id);
ZMLockedPacket *get_packet(packetqueue_iterator *);
ZMLockedPacket *get_packet_and_increment_it(packetqueue_iterator *);
packetqueue_iterator *get_video_it(bool wait);
packetqueue_iterator *get_stream_it(int stream_id);
void free_it(packetqueue_iterator *);
packetqueue_iterator *get_event_start_packet_it(
packetqueue_iterator snapshot_it,
unsigned int pre_event_count
);
bool is_there_an_iterator_pointing_to_packet(const std::shared_ptr &zm_packet);
void unlock(ZMLockedPacket *lp);
void notify_all();
void wait();
};
#endif /* ZM_PACKETQUEUE_H */