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The CAM object corresponds to the Camera system object.
The CAM object sends the events given in the table. The procedure is started when the corresponding event occurs.
Description of the events from the CAM object.
Events | Description of events | Comment |
ARM | The camera is armed | If the operator armed the camera from the map or video surveillance monitor, the user_id<> parameter contains the identifier of the user who performed this action |
ATTACH | Connecting | NA |
BLINDING | The camera is blinded | NA |
DETACH | Break | The event is generated when the input signal from the camera on the video capture device is lost |
DISARM | The camera is disarmed | If the operator disarmed the camera from the map or video surveillance monitor, the user_id<> parameter contains the identifier of the user who performed this action |
FILE_REC_ERROR | Writing to disk error | The event is generated when an error occurs when writing the video archive to disk |
MD_START | Alarm | NA |
MD_STOP | End of alarm | NA |
Print frame | NA | |
REC | Writing to disk | If the operator initiated the recording from the map or video surveillance monitor, the user_id<> parameter contains the identifier of the user who performed this action |
REC_STOP | Stop writing to disk | If the operator stopped the recording from the map or video surveillance monitor, the user_id<> parameter contains the identifier of the user who performed this action |
UNBLINDING | The camera is unblinded | NA |
RECORDER_ON | Recording is on | NA |
RECORDER_OFF | Recording is off | NA |
DISC_MOUNT | The disk is mounted | NA |
DISC_UNMOUNT | The disk is unmounted | NA |
FINISHED_AVI_EXPORT | Video export is completed | If the video export fails, the event has a non-null error_result parameter. In the param<0> parameter there is additional information displayed in the corresponding column of the event viewer in the following format: "ComputerName;ExportPeriod;UserName;UserID", for example, param0<LOCALHOST;04-06-18 16:50:55_04-06-18 16:55:55;Smith;1> |
| MD_LIMIT | The number of objects in the frame is exceeded | The event is generated when the number of objects detected by the tracker in the frame is exceeded (see Create and configure the Tracker object). An event is generated whenever the number of objects is changed (up or down), until it is less than the threshold. The object_count<> parameter is the number of objects in the frame that the tracker detected, exceeds the specified limit, and differs from the previous value. See also the description of the NEW_OBJECT event below |
| NEW_OBJECT | The tracker detected a new object in a frame | Among others, it contains the following parameters:
|
| ARCH_DELETE | Record deletion | Deletion of the record from the camera archive from the video surveillance monitor |
| OPEN_FILE | File opening | Opening a file for playback by a virtual video capture device. Indicates that playback of the next file from the selected folder starts. Among others, the event contains the following parameters:
|
| CLOSE_FILE | File closing | Finishing a file playback by a virtual video capture device. Indicates that playback of a file has ended. Among others, the event contains the following parameters:
|
| ARCH_PROTECTED | File protected from overwriting | The event is displayed when a user protects the file from being overwritten. The param<0> parameter contains additional information about the computer name, fragment, username, and user ID that is displayed in the Add. Info column in the event viewer in the following format: "ComputerName;ProtectionPeriod;UserName;UserID", for example, param0<LOCALHOST;04-06-18 16:50:55.612_04-06-18 16:55:55.612;Smith;1> |
| ARCH_UNPROTECTED | Overwrite protection removed from file | The event is displayed when a user removes protection from the file from being overwritten. The param<0> parameter contains additional information about the computer name, fragment, username, and user ID that is displayed in the Add. Info column in the event viewer in the following format: "ComputerName;ProtectionPeriod;UserName;UserID", for example, param0<LOCALHOST;04-06-18 16:50:55.612_04-06-18 16:55:55.612;Smith;1> |
| FRAME_SKIPPED | Frames skipped | The FRAME_SKIPPED event occurs in Axxon PSIM if there are frames skipped when recording to the archive. By default, the event is generated if there are more than 50 frame skips during the testing period. When frame skipping stops, the FRAME_SKIPPED_STOP event is generated. The description of this event contains information about the number of skipped frames and the time period in which there were skips. By default, both events are generated no more than once every 30 seconds. The events are controlled by the following registry keys (see Registry keys reference guide):
|
| FRAME_SKIPPED_STOP | End of frames skipping | |
| ARCH_BOOKMARKED | Bookmark created | The event is displayed when a user adds a bookmark. The param<0> parameter (in the Add. Info column in the event viewer) contains the comment to the bookmark |
| ARCH_UNBOOKMARKED | Bookmark deleted | The event is displayed when a user deletes a bookmark |
| ARCH_UNBOOKMARK_PERIOD | Bookmarks within a certain period of time deleted | The event is displayed when the user deletes bookmarks within a specific time period. All bookmarks whose time period overlaps the one specified in this command are also deleted |
| TEMPERATURE_ALARM | Temperature threshold | The param0<> parameter contains the temperature value received from the thermal camera |
| IGNORE_KEEP_NO_LESS | Ignoring "Keep no less than" | The event is generated when a video fragment is deleted from the archive before expiration of the time period set by the Store no less than parameter. See also Configuration of the camera archive depth |
| AVAILABILITY | Availability of the key position in the license file and the number of objects | The event occurs in response to the GET_AVAILABILITY command and contains information about the number of objects added to the license key for the given position. Parameters:
If there is no position in the key, the event has a zero value |
| WRITING_FAILED | Writing error | NA |
| FILESYSTEM_FAILED | File system error | Contains mandatory parameter error_msg<>—error text; can also contain parameters cam<>—camera ID and error_code<>—error code. Example: CAM|-1|FILESYSTEM_FAILED|error_msg<Failed to delete index file: D:\\VIDEO\\INDEX\\14061608.idx, error code: 5.>,error_code<5> |
The list of commands and parameters for the CAM object is given in the following table.
Command—command description | Parameters | Description of parameters |
SETUP—sets (changes) the parameters of a camera | rec_priority<> | Record priority (from 0 to 3, 0—standard, 3—all resources) |
compression<> | Compression ratio (0—no compression, 1—maximum quality, …, 5—minimum quality) | |
sat_u<> | Color saturation (0—min, 10—max) | |
proc_time<> | Additional recording period (0–30 sec) | |
manual<> | Control brightness and contrast settings (0—manual; 1—auto; 2—auto, but close to values specified manually) | |
contrast<> | Contrast (0—min, 10—max) | |
md_size<> | Size of motion detector objects (1–16) | |
md_mode<> | Mode of pause record (1—enabled, 0—disabled) | |
audio_type<> | Type of sound accompaniment | |
pre_rec_time<> | Time of pre-record (0–20 sec) | |
bright<> | Brightness (0—min, 10—max) | |
audio_id<> | Number of a microphone (empty parameter if there is no microphone) | |
rec_time<> | Record speed (1–30 FPS, 0—not used) | |
alarm_rec<> | Recording of alarms (1—enabled, 0—disabled) | |
hot_rec_time<> | Time of hot record (0–30 sec) | |
hot_rec_period<> | Period of hot record (0–20 sec) | |
mux<> | Number of a channel (0–1 channel, 15–16 channel) | |
color<> | Color (0—black and white, 1—multicolor) | |
activity<> | NA | |
arch_days<> | Number of archive days | |
blinding<> | The camera is blinded | |
config_id<> | NA | |
decoder<> | NA | |
flags<> | Flags | |
fps<> | Speed of recording (0—not used, 1–30 FPS) | |
ifreq<> | Frequency of key frames in sequence (1—each frame is key, 2—100th frame) | |
mask 0, mask1, mask2, mask3, mask4 | Detector mask | |
md_contrast<> | Sensitivity of motion detector (0–15) | |
motion<> | Estimation of compressor motion (5–255) | |
name<> | Object name | |
password_crc<> | Video archive password | |
priority<> | Priority of record resource (0—auto, 1—manual) | |
resolution<> | Resolution (0—standard CIF, 1—high 2CIF, 2—maximum 4CIF) | |
type<> | Type of object | |
yuv<> | Color scheme of video signal coding (0—YUV4:2:0, 1—YUV4:2:2) | |
DELETE—disables camera | NA | NA |
START_VIDEO—enables video stream for the current camera | slave_id<> | Name of the computer to which the camera is connected |
comress<> | Level of compression | |
register_only<> | NA | |
STOP_VIDEO—disables video stream for the current camera | slave_id<> | Name of computer to which camera is connected |
REQUEST_MASK | mask<> | Mask |
MUX1, MUX2, MUX3—display the image of a camera on 1, 2, 3 analog outputs | NA | NA |
ACTIVATE—display camera on monitor | monitor<> | Number of a monitor |
ARM—arm camera | NA | NA |
DISARM—disarm camera | NA | NA |
REC—start recording | time<> | Time of recording in seconds, if null, then only one frame is recorded |
rollback<> | If 1, the record is performed with a rollback | |
priority<> | Sets priority of command to start recording. See Appendix 1. Priorities of the start and stop recording commands | |
| stream_id<> | Sets an identification number of a stream for recording. The stream ID is set as "n.m" where n is the camera ID, m is the number of the stream. Note. If the specified stream isn't used for any purpose other than recording by command (and custom on clients), make sure that the Lock disabling streams not in use checkbox is set for it—see The settings panel of the Camera object | |
REC_STOP—stop recording | priority<> | Sets priority of a command to stop recording. See Appendix 1. Priorities of the start and stop recording commands |
| user_id<> | If the user stopped the recording from the video surveillance monitor, the parameter contains the user ID. Otherwise, the parameter is absent | |
| from_macro<> | If recording was stopped by a macro, the parameter contains the macro ID. Otherwise, the parameter is absent | |
SET_MASK—set mask | mask<> | Mask |
ADD_SUBTITLES—add titles | command<> | Test of the titles |
title_id<> | The ID of the Captioner object that is used to add the titles | |
page<> | Required parameter to allow recording titles to the titles database to provide search by titles. Available values: BEGIN (start of recording in the database), END (end of recording in the database) | |
SIP_CONNECT—SIP connected | NA | NA |
SIP_DISCONNECT—SIP disconnected | NA | NA |
SET_IPINT_PARAM—set (change) the parameters of an IP device. Reaction allows changing the IP device settings without going into its web interface. Note. For the reaction to work, it is required to enable the mode of multi-stream video signal—see Configuring the multistream video and Appendix 2. Defining the param_id and param_value values for the SET_IPINT_PARAM reaction | param_id<> | Name of a parameter. Set of parameters for each camera is individual—see Appendix 2. Defining the param_id and param_value values for the SET_IPINT_PARAM reaction |
param_value<> | Value of a parameter. Set of parameters for each camera is individual—see Appendix 2. Defining the param_id and param_value values for the SET_IPINT_PARAM reaction | |
vstream_id<> | Number of a video stream (optional parameter). It has the format “Number of camera”.”Number of a stream”, for example 1.1, 1.2 | |
GET_FRAME—get frame from a camera even if it is not displayed in the video surveillance monitor | path<> | Path to save a frame. If there is no parameter, the FRAME_SENT event with the data parameter will be formed in the system. Processing of this event is described in The SaveToFile method |
| stream<> | Optional parameter. Sets Axxon PSIM stream to get a frame from. The stream can be specified by a number or purpose. Possible purposes:
Stream number consists of a camera ID and a stream ID divided by a dot, for example, 4.3 is for stream 3 from camera 4 | |
| time<> | Optional parameter. It is set to request video frame from the archive. Format: DD-MM-YYYY hh:mm:ss. Example: time<19-09-2017 11:35:34> | |
| gate<> | Optional parameter. Specifies the network name of the videogate from whose archive the frame must be retrieved. | |
| arch<> | Optional parameter. Specifies the network name of the backup archive to get the frame from | |
| slave_id<> | Optional parameter. Specifies the network name of the server from whose archive the frame must be retrieved | |
| password_crc<> | Optional parameter. Specifies the CRC sequence to be recorded to the file together with the frame | |
| ARCH_DEL_RECORD—delete archive recordings over the specified period | fromTime<> | Mandatory parameter. Time in the YYYY-MM-DDTHH: MM: SS.NNN format, where NNN—milliseconds. The recordings will be deleted (starting with the first one containing the specified time and ending with the last one containing the toTime time). If no time is specified in the toTime parameter, then only one recording is deleted |
| toTime<> | Optional parameter. Time in the YYYY-MM-DDTHH: MM: SS.NNN format, where NNN—milliseconds. See description above | |
| REC_RESTART—restart recording | NA | NA |
| ARCH_BOOKMARK_RECORD—create a bookmark | time1<> | The date of the archive period beginning included in the bookmark in the DD-MM-YY HH: MM: SS.NNN format, where NNN—milliseconds |
| time2<> | The date of the archive period end included in the bookmark in the DD-MM-YY HH: MM: SS.NNN format, where NNN— milliseconds | |
| comment<> | Comment to a bookmark | |
| slave_id<> | IDs of the computer and video surveillance monitor using which the bookmark is created. Parameter format: <computer id>.<monitor id>. For example, slave_id<WS2.1>—WS2 is a computer ID, and 1 is video surveillance monitor ID | |
| ARCH_UNBOOKMARK_PERIOD—delete a bookmark for a certain period | time1<> | The start date of the archive period included in the bookmark, in the format DD-MM-YY HH:MM:SS.NNN, where NNN is milliseconds |
| time2<> | The end date of the archive period included in the bookmark, in the format DD-MM-YY HH:MM:SS.NNN, where NNN is milliseconds | |
| computer<> | The name of the computer to which the camera is connected and on which the archive is saved | |
| CRUISE_START—auto cruise | cruise_id<> | Route name on a camera |
| action<> | Executed action:
| |
| cam_id<> | Camera ID | |
| GET_DEPTH—get the archive depth. The ARCHIVE_DEPTH event from the SLAVE object (see SLAVE Computer) is created in the system as the response to this reaction. If one or both parameters are absent it means that there is the archive depth request for all possible parameters | drive<> | Disk or network path to request the archive depth. The disk name is set in the "<disk letter>:\\" format, for example drive<D:\\> Note. The "\" character is an escape character. The network path is set in the UNC format |
| arch | Get the backup archive depth. Example. DoReactStr("CAM","2","GET_DEPTH","drive<D:\\>,cam<2>,arch"); | |
| gate | Get the videogate archive depth. Example. DoReactStr("CAM","1","GET_DEPTH","drive<V:\\>,gate"); | |
| CLEAR_SUBTITLES—remove all titles from the video | title_id<> | The ID of the Captioner object |
| GET_AVAILABILITY—check the availability of the key position | pos<> | The position number in the license key |
Properties of the CAM object are shown in the table.
Properties of the CAM object | Description of the object properties |
ID<> | Object ID |
PARENT_ID<> | Parent object ID |
TELEMETRY_ID<> | Telemetry module ID (PTZ ID) |
REGION_ID<> | Region ID |
The CAM object can be in the following states.
State of CAM object | Description |
ALARMED | The camera is in alarm mode |
DISARM_DETACHED | No signal from the camera |
DETACHED | No signal from the camera |
ARMED | The camera is armed |
DISARMED | The camera is disarmed |