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zoneminder/src/zm_monitor.h

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//
// ZoneMinder Monitor Class Interfaces, $Date$, $Revision$
// Copyright (C) 2001-2008 Philip Coombes
//
// This program 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 2
// of the License, or (at your option) any later version.
//
// This program 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 this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
#ifndef ZM_MONITOR_H
#define ZM_MONITOR_H
#include <vector>
#include <sstream>
#include "zm.h"
#include "zm_coord.h"
#include "zm_image.h"
#include "zm_rgb.h"
#include "zm_zone.h"
#include "zm_event.h"
#include "zm_camera.h"
#include "zm_utils.h"
#include "zm_image_analyser.h"
#include <sys/time.h>
#include <stdint.h>
#define SIGNAL_CAUSE "Signal"
#define MOTION_CAUSE "Motion"
#define LINKED_CAUSE "Linked"
//
// This is the main class for monitors. Each monitor is associated
// with a camera and is effectively a collector for events.
//
class Monitor
{
friend class MonitorStream;
public:
typedef enum
{
QUERY=0,
CAPTURE,
ANALYSIS
} Purpose;
typedef enum
{
NONE=1,
MONITOR,
MODECT,
RECORD,
MOCORD,
NODECT
} Function;
typedef enum
{
ROTATE_0=1,
ROTATE_90,
ROTATE_180,
ROTATE_270,
FLIP_HORI,
FLIP_VERT
} Orientation;
typedef enum
{
IDLE,
PREALARM,
ALARM,
ALERT,
TAPE
} State;
protected:
typedef std::set<Zone *> ZoneSet;
typedef enum { GET_SETTINGS=0x1, SET_SETTINGS=0x2, RELOAD=0x4, SUSPEND=0x10, RESUME=0x20 } Action;
typedef enum { CLOSE_TIME, CLOSE_IDLE, CLOSE_ALARM } EventCloseMode;
/* sizeof(SharedData) expected to be 336 bytes on 32bit and 64bit */
typedef struct
{
uint32_t size; /* +0 */
uint32_t last_write_index; /* +4 */
uint32_t last_read_index; /* +8 */
uint32_t state; /* +12 */
uint32_t last_event; /* +16 */
uint32_t action; /* +20 */
int32_t brightness; /* +24 */
int32_t hue; /* +28 */
int32_t colour; /* +32 */
int32_t contrast; /* +36 */
int32_t alarm_x; /* +40 */
int32_t alarm_y; /* +44 */
uint8_t valid; /* +48 */
uint8_t active; /* +49 */
uint8_t signal; /* +50 */
uint8_t format; /* +51 */
uint32_t imagesize; /* +52 */
uint32_t epadding1; /* +56 */
uint32_t epadding2; /* +60 */
/*
** This keeps 32bit time_t and 64bit time_t identical and compatible as long as time is before 2038.
** Shared memory layout should be identical for both 32bit and 64bit and is multiples of 16.
*/
union { /* +64 */
time_t last_write_time;
uint64_t extrapad1;
};
union { /* +72 */
time_t last_read_time;
uint64_t extrapad2;
};
uint8_t control_state[256]; /* +80 */
} SharedData;
typedef enum { TRIGGER_CANCEL, TRIGGER_ON, TRIGGER_OFF } TriggerState;
/* sizeof(TriggerData) expected to be 560 on 32bit & and 64bit */
typedef struct
{
uint32_t size;
uint32_t trigger_state;
uint32_t trigger_score;
uint32_t padding;
char trigger_cause[32];
char trigger_text[256];
char trigger_showtext[256];
} TriggerData;
/* sizeof(Snapshot) expected to be 16 bytes on 32bit and 32 bytes on 64bit */
struct Snapshot
{
struct timeval *timestamp;
Image *image;
void* padding;
};
class MonitorLink
{
protected:
unsigned int id;
char name[64];
bool connected;
time_t last_connect_time;
#if ZM_MEM_MAPPED
int map_fd;
char mem_file[PATH_MAX];
#else // ZM_MEM_MAPPED
int shm_id;
#endif // ZM_MEM_MAPPED
off_t mem_size;
unsigned char *mem_ptr;
volatile SharedData *shared_data;
volatile TriggerData *trigger_data;
int last_state;
int last_event;
public:
MonitorLink( int p_id, const char *p_name );
~MonitorLink();
inline int Id() const
{
return( id );
}
inline const char *Name() const
{
return( name );
}
inline bool isConnected() const
{
return( connected );
}
inline time_t getLastConnectTime() const
{
return( last_connect_time );
}
bool connect();
bool disconnect();
bool isAlarmed();
bool inAlarm();
bool hasAlarmed();
};
protected:
// These are read from the DB and thereafter remain unchanged
unsigned int id;
char name[64];
unsigned int server_id;
Function function; // What the monitor is doing
bool enabled; // Whether the monitor is enabled or asleep
unsigned int width; // Normally the same as the camera, but not if partly rotated
unsigned int height; // Normally the same as the camera, but not if partly rotated
bool v4l_multi_buffer;
unsigned int v4l_captures_per_frame;
Orientation orientation; // Whether the image has to be rotated at all
unsigned int deinterlacing;
int brightness; // The statically saved brightness of the camera
int contrast; // The statically saved contrast of the camera
int hue; // The statically saved hue of the camera
int colour; // The statically saved colour of the camera
char event_prefix[64]; // The prefix applied to event names as they are created
char label_format[64]; // The format of the timestamp on the images
Coord label_coord; // The coordinates of the timestamp on the images
int label_size; // Size of the timestamp on the images
int image_buffer_count; // Size of circular image buffer, at least twice the size of the pre_event_count
int pre_event_buffer_count; // Size of dedicated circular pre event buffer used when analysis is not performed at capturing framerate,
// value is pre_event_count + alarm_frame_count - 1
int warmup_count; // How many images to process before looking for events
int pre_event_count; // How many images to hold and prepend to an alarm event
int post_event_count; // How many unalarmed images must occur before the alarm state is reset
int stream_replay_buffer; // How many frames to store to support DVR functions, IGNORED from this object, passed directly into zms now
int section_length; // How long events should last in continuous modes
bool adaptive_skip; // Whether to use the newer adaptive algorithm for this monitor
int frame_skip; // How many frames to skip in continuous modes
int motion_frame_skip; // How many frames to skip in motion detection
double analysis_fps; // Target framerate for video analysis
unsigned int analysis_update_delay; // How long we wait before updating analysis parameters
int capture_delay; // How long we wait between capture frames
int alarm_capture_delay; // How long we wait between capture frames when in alarm state
int alarm_frame_count; // How many alarm frames are required before an event is triggered
int fps_report_interval; // How many images should be captured/processed between reporting the current FPS
int ref_blend_perc; // Percentage of new image going into reference image.
int alarm_ref_blend_perc; // Percentage of new image going into reference image during alarm.
bool track_motion; // Whether this monitor tries to track detected motion
Rgb signal_check_colour; // The colour that the camera will emit when no video signal detected
bool embed_exif; // Whether to embed Exif data into each image frame or not
double fps;
Image delta_image;
Image ref_image;
Image alarm_image; // Used in creating analysis images, will be initialized in Analysis
Image write_image; // Used when creating snapshot images
Purpose purpose; // What this monitor has been created to do
int event_count;
int image_count;
int ready_count;
int first_alarm_count;
int last_alarm_count;
int buffer_count;
int prealarm_count;
State state;
time_t start_time;
time_t last_fps_time;
time_t auto_resume_time;
unsigned int last_motion_score;
EventCloseMode event_close_mode;
#if ZM_MEM_MAPPED
int map_fd;
char mem_file[PATH_MAX];
#else // ZM_MEM_MAPPED
int shm_id;
#endif // ZM_MEM_MAPPED
off_t mem_size;
unsigned char *mem_ptr;
SharedData *shared_data;
TriggerData *trigger_data;
Snapshot *image_buffer;
Snapshot next_buffer; /* Used by four field deinterlacing */
Snapshot *pre_event_buffer;
Camera *camera;
Event *event;
int n_zones;
Zone **zones;
struct timeval **timestamps;
Image **images;
const unsigned char *privacy_bitmask;
int n_linked_monitors;
MonitorLink **linked_monitors;
public:
// OurCheckAlarms seems to be unused. Check it on zm_monitor.cpp for more info.
//bool OurCheckAlarms( Zone *zone, const Image *pImage );
Monitor( int p_id, const char *p_name, unsigned int p_server_id, int p_function, bool p_enabled, const char *p_linked_monitors, Camera *p_camera, int p_orientation, unsigned int p_deinterlacing, const char *p_event_prefix, const char *p_label_format, const Coord &p_label_coord, int label_size, int p_image_buffer_count, int p_warmup_count, int p_pre_event_count, int p_post_event_count, int p_stream_replay_buffer, int p_alarm_frame_count, int p_section_length, int p_frame_skip, int p_motion_frame_skip, double p_analysis_fps, unsigned int p_analysis_update_delay, int p_capture_delay, int p_alarm_capture_delay, int p_fps_report_interval, int p_ref_blend_perc, int p_alarm_ref_blend_perc, bool p_track_motion, Rgb p_signal_check_colour, bool p_embed_exif, Purpose p_purpose, int p_n_zones=0, Zone *p_zones[]=0 );
~Monitor();
void AddZones( int p_n_zones, Zone *p_zones[] );
void AddPrivacyBitmask( Zone *p_zones[] );
bool connect();
inline int ShmValid() const
{
return( shared_data->valid );
}
inline int Id() const
{
return( id );
}
inline const char *Name() const
{
return( name );
}
inline Function GetFunction() const
{
return( function );
}
inline bool Enabled()
{
if ( function <= MONITOR )
return( false );
return( enabled );
}
inline const char *EventPrefix() const
{
return( event_prefix );
}
inline bool Ready()
{
if ( function <= MONITOR )
return( false );
return( image_count > ready_count );
}
inline bool Active()
{
if ( function <= MONITOR )
return( false );
return( enabled && shared_data->active );
}
inline bool Exif()
{
return( embed_exif );
}
unsigned int Width() const { return( width ); }
unsigned int Height() const { return( height ); }
unsigned int Colours() const { return( camera->Colours() ); }
unsigned int SubpixelOrder() const { return( camera->SubpixelOrder() ); }
State GetState() const;
int GetImage( int index=-1, int scale=100 );
struct timeval GetTimestamp( int index=-1 ) const;
void UpdateAdaptiveSkip();
useconds_t GetAnalysisRate();
unsigned int GetAnalysisUpdateDelay() const { return( analysis_update_delay ); }
int GetCaptureDelay() const { return( capture_delay ); }
int GetAlarmCaptureDelay() const { return( alarm_capture_delay ); }
unsigned int GetLastReadIndex() const;
unsigned int GetLastWriteIndex() const;
unsigned int GetLastEvent() const;
double GetFPS() const;
void ForceAlarmOn( int force_score, const char *force_case, const char *force_text="" );
void ForceAlarmOff();
void CancelForced();
TriggerState GetTriggerState() const { return( (TriggerState)(trigger_data?trigger_data->trigger_state:TRIGGER_CANCEL )); }
void actionReload();
void actionEnable();
void actionDisable();
void actionSuspend();
void actionResume();
int actionBrightness( int p_brightness=-1 );
int actionHue( int p_hue=-1 );
int actionColour( int p_colour=-1 );
int actionContrast( int p_contrast=-1 );
inline int PrimeCapture()
{
return( camera->PrimeCapture() );
}
inline int PreCapture()
{
return( camera->PreCapture() );
}
int Capture();
int PostCapture()
{
return( camera->PostCapture() );
}
unsigned int DetectMotion( const Image &comp_image, Event::StringSet &zoneSet );
// DetectBlack seems to be unused. Check it on zm_monitor.cpp for more info.
//unsigned int DetectBlack( const Image &comp_image, Event::StringSet &zoneSet );
bool CheckSignal( const Image *image );
bool Analyse();
void DumpImage( Image *dump_image ) const;
void TimestampImage( Image *ts_image, const struct timeval *ts_time ) const;
bool closeEvent();
void Reload();
void ReloadZones();
void ReloadLinkedMonitors( const char * );
bool DumpSettings( char *output, bool verbose );
void DumpZoneImage( const char *zone_string=0 );
#if ZM_HAS_V4L
static int LoadLocalMonitors( const char *device, Monitor **&monitors, Purpose purpose );
#endif // ZM_HAS_V4L
static int LoadRemoteMonitors( const char *protocol, const char *host, const char*port, const char*path, Monitor **&monitors, Purpose purpose );
static int LoadFileMonitors( const char *file, Monitor **&monitors, Purpose purpose );
#if HAVE_LIBAVFORMAT
static int LoadFfmpegMonitors( const char *file, Monitor **&monitors, Purpose purpose );
#endif // HAVE_LIBAVFORMAT
static Monitor *Load( unsigned int id, bool load_zones, Purpose purpose );
//void writeStreamImage( Image *image, struct timeval *timestamp, int scale, int mag, int x, int y );
//void StreamImages( int scale=100, int maxfps=10, time_t ttl=0, int msq_id=0 );
//void StreamImagesRaw( int scale=100, int maxfps=10, time_t ttl=0 );
//void StreamImagesZip( int scale=100, int maxfps=10, time_t ttl=0 );
void SingleImage( int scale=100 );
void SingleImageRaw( int scale=100 );
void SingleImageZip( int scale=100 );
#if HAVE_LIBAVCODEC
//void StreamMpeg( const char *format, int scale=100, int maxfps=10, int bitrate=100000 );
#endif // HAVE_LIBAVCODEC
};
#define MOD_ADD( var, delta, limit ) (((var)+(limit)+(delta))%(limit))
class MonitorStream : public StreamBase
{
protected:
typedef struct SwapImage {
bool valid;
struct timeval timestamp;
char file_name[PATH_MAX];
} SwapImage;
private:
SwapImage *temp_image_buffer;
int temp_image_buffer_count;
int temp_read_index;
int temp_write_index;
protected:
time_t ttl;
protected:
int playback_buffer;
bool delayed;
int frame_count;
protected:
bool checkSwapPath( const char *path, bool create_path );
bool sendFrame( const char *filepath, struct timeval *timestamp );
bool sendFrame( Image *image, struct timeval *timestamp );
void processCommand( const CmdMsg *msg );
public:
MonitorStream() : playback_buffer( 0 ), delayed( false ), frame_count( 0 )
{
}
void setStreamBuffer( int p_playback_buffer )
{
playback_buffer = p_playback_buffer;
}
void setStreamTTL( time_t p_ttl )
{
ttl = p_ttl;
}
bool setStreamStart( int monitor_id )
{
return loadMonitor( monitor_id );
}
void runStream();
};
#endif // ZM_MONITOR_H
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