easy_onvif 2.1.0-dev.3

A pure Dart library designed primarily for command line automation of Onvif compatible devices, but can be used anywhere Dart is used.

ONVIF Client protocol Profile S (Live Streaming) Dart implementation

This is a wrapper to ONVIF protocol which allows you to get information about your NVT (network video transmitter) device, its media sources, control PTZ (pan-tilt-zoom) movements and manage presets. It will also allow you to get information about your NVR (network video recorder).

Table of contents

• New for version 2.1.x
• New for version 2.0.x
• Getting Started
  • Dependency
  • Usage Example
  • Interacting with a device through Onvif operations
• Lower level requests
• Onvif cli (Onvif at the command prompt)
• Supported Onvif Operations
  • Device Management
  • Media 1
  • Media 2
  • PTZ
  • PTZ Helper Methods
• Tested Onvif Devices
• What's next
• Features and bugs
• Known Issues
• Breaking changes
  • v2.1.0
• Contributing

New for version 2.1.x

Support for Media2 Onvif operations

// defaults to Media2, but will fallback to Media1 if Media2 is not supported
var profiles = await onvif.media.getProfiles();

// alternatively, make an explicit call to the Media2 operation
var profiles2 = await onvif.media.media2.getProfiles();

New for version 2.0.x

Device discovery is finally here. If you're using that cli utilities that became available from v1.0.0, you can discover Onvif devices on your network with the command:

onvif probe

Or, in dart code:

final multicastProbe = MulticastProbe();

await multicastProbe.probe();

for (var device in multicastProbe.onvifDevices) {
  print(
      '${device.name} ${device.location} ${device.hardware} ${device.xAddr}');
}

Getting Started

Dependency

To use this package in your code, first add the dependency to your project:

dependencies:
  ...
  easy_onvif: ^2.1.0-dev.3

If you need additional help getting started with dart, check out these guides.

Usage Example

Import the easy_onvif library.

import 'package:easy_onvif/onvif.dart';

final onvif = await Onvif.connect(
 host: [hostname or ip address],
 username: [username],
 password: [password]);

Interacting with a device through Onvif operations

Refer to the tables below for the supported operations.

Through the deviceManagement operations you can get information about the connected device.

var deviceInfo = await onvif.deviceManagement.getDeviceInformation();

print(deviceInfo.model);

Many operations require you to supply a profileToken which can be retrieved through media operations.

var profiles = await onvif.media.getProfiles();

profiles.forEach((element) {
 print('${element.name}  ${element.token}');
});

var profileToken = profiles[0].token;

With the ptz operations you can get a list of camera presets from the connected device.

var presets = await onvif.ptz.getPresets(profileToken);

//get a specific preset
var preset = presets[11];

//print the preset values
print(
 'preset: ${preset.position.panTilt?.x}  ${preset.position.panTilt?.y}  ${preset.position.zoom?.x}');

//use the GotoPreset operation to point the camera to the given preset
await onvif.ptz.gotoPreset(profileToken, preset);

Be sure to look through the API Reference for information about the parameters required for the supported Onvif operations.

Lower level requests

In cases where there is no helper method for a specific Onvif operation, a low-level call can be used to make the request to the device. The code below performs the GetAudioOutputs Media1 operation. All responses take the form of a hashmap Map<String,dynamic>.

// sample low level request
//
// build a xml fragment for the specific Onvif operation
Transport.builder.element('GetAudioOutputs', nest: () {
  Transport.builder.namespace(Xmlns.trt);
});

final requestFragment = Transport.builder.buildFragment();

// using the connected onvif object from the earlier example
final transport = onvif.transport;

// build the soap request envelope and send the request
// since this is a media1 request, send to the media1 endpoint
final envelope = await transport.sendRequest(
    onvif.media.media1.uri, transport.securedEnvelope(requestFragment));

print(envelope.body.response);

Onvif cli (Onvif at the command prompt)

A command line interface for controlling an Onvif device with cli commands

Install using dart pub:

dart pub global activate easy_onvif

Install using brew:

brew tap faithoflifedev/easy_onvif
brew install onvif

Run the following command to see help:

onvif --help

Result,

A command line interface for controlling Onvif compliant devices

Usage: onvif <command> [arguments]

Global options:
-h, --help           Print this usage information.
    --config-file    (defaults to "$HOME/.onvif/credentials.json")
    --log-level      [all, debug, info, warning, error, off (default)]

Available commands:
  authorize           Generate an authentication file for an Onvif device
  device-management   Device management commands.
  media               Media commands.
  probe               Probe/device discovery command.
  ptz                 PTZ commands.
  version             Display the package name and version.

Please see the cli documentation README.md for more detailed usage information.

Supported Onvif Operations

Device Management

Onvif Operation	Dart Method	Dart Return Type	Test
CreateUsers	createUsers	Future<bool>	[x]
DeleteUsers	deleteUsers	Future<bool>	[x]
GetCapabilities	getCapabilities	Future<Capabilities>	[x]
GetDeviceInformation	getDeviceInformation	Future<GetDeviceInformationResponse>	[x]
GetDiscoveryMode	getDiscoveryMode	Future<String>	[x]
GetDNS	getDNS	Future<DnsInformation>	[x]
GetHostname	getHostname	Future<HostnameInformation>	[x]
GetNetworkProtocols	getNetworkProtocols	Future<List<NetworkProtocol>>	[x]
GetNTP	getNtp	Future<NtpInformation>	[x]
GetServiceCapabilities	getServiceCapabilities	Future<DeviceServiceCapabilities>	[x]
GetServices	getServices	Future<List<Service>>	[x]
GetSystemDateAndTime	getSystemDateAndTime	Future<SystemDateAndTime>	[x]
GetSystemUris	getSystemUris	Future<GetSystemUrisResponse>	[x]
GetUsers	getUsers	Future<List<User>>	[x]

Media 1

Onvif Operation	Dart Method	Dart Return Type	Test
GetAudioSources	getAudioSources	Future<List<AudioSource>>	[x]
GetMetadataConfiguration	getMetadataConfiguration	Future<MetadataConfiguration>	[x]
GetMetadataConfigurations	getMetadataConfigurations	Future<List<MetadataConfiguration>>	[x]
GetProfile	getProfile	Future<Profile>	[x]
GetProfiles	getProfiles	Future<List<Profile>?>	[x]
GetServiceCapabilities	getServiceCapabilities	Future<Capabilities1>	[x]
GetSnapshotUri	getSnapshotUri	Future<MediaUri>	[x]
GetStreamUri	getStreamUri	Future<MediaUri>	[x]
GetVideoSources	getVideoSources	Future<VideoSources>	[x]
StartMulticastStreaming	startMulticastStreaming	Future<bool>	[x]
StopMulticastStreaming	stopMulticastStreaming	Future<bool>	[x]

Media 2

Onvif Operation	Dart Method	Dart Return Type	Test
GetMetadataConfigurationOptions	getMetadataConfigurationOptions	Future<MetadataConfigurationOptions>	[x]
GetMetadataConfigurations	getMetadataConfigurations	Future<List<MetadataConfiguration>>	[x]
GetProfiles	getProfiles	Future<List<MediaProfile>?>	[x]
GetServiceCapabilities	getServiceCapabilities	Future<Capabilities2>	[x]
GetSnapshotUri	getSnapshotUri	Future<String>	[x]
GetStreamUri	getStreamUri	Future<String>	[x]
GetVideoEncoderInstances	getVideoEncoderInstances	Future<Info>	[ ]
StartMulticastStreaming	startMulticastStreaming	Future<bool>	[x]
StopMulticastStreaming	stopMulticastStreaming	Future<bool>	[x]

PTZ

Onvif Operation	Dart Method	Dart Return Type	Test
AbsoluteMove	absoluteMove	Future<bool>	[x]
ContinuousMove	continuousMove	Future<bool>	[x]
GetCompatibleConfigurations	getCompatibleConfigurations	Future<List<PtzConfiguration>>	[x]
GetConfiguration	getConfiguration	Future<PtzConfiguration>	[x]
GetConfigurationOptions	getConfigurationOptions	Future<PtzConfigurationOptions>	[x]
GetConfigurations	getConfigurations	Future<List<PtzConfiguration>>	[x]
GetPresets	getPresets	Future<List<Preset>>	[x]
GetServiceCapabilities	getServiceCapabilities	Future<Capabilities>	[x]
GetStatus	getStatus	Future<PtzStatus>	[x]
GotoHomePosition	gotoHomePosition	Future<bool>	[x]
GotoPreset	gotoPreset	Future<bool>	[x]
RelativeMove	relativeMove	Future<bool>	[x]
RemovePreset	removePreset	Future<bool>	[x]
SetHomePosition	setHomePosition	Future<bool>	[x]
SetPreset	setPreset	Future<String>	[x]
Stop	stop	Future<bool>	[x]

PTZ Helper Methods

Onvif Operation	Dart Method	Return Type
N/A	move	Future<void>
N/A	moveDown	Future<void>
N/A	moveLeft	Future<void>
N/A	moveRight	Future<void>
N/A	moveUp	Future<void>
N/A	zoomIn	Future<void>
N/A	zoomOut	Future<void>
N/A	getCurrentPreset	Future<Preset?>

Tested Onvif Devices

The values returned by the Onvif API GetDeviceInformation call.

Manufacturer	Model	Known Issue
D-Link Corporation	DCS-6511	commands not implemented¹
Happytimesoft	IPCamera
ONVIF	ENP1A14-IR/25X
NONE	GX728MF-IR28	commands not implemented²

¹ The following are not implemented for the DCS-6511:

• Device Management:
  • GetServices
  • GetServiceCapabilities
• Media1:
  • GetMetadataConfiguration
  • GetProfile
  • GetServiceCapabilities
  • GetStreamUri
• Media2:
  • is not supported by this device
• PTZ:
  • not tested

² The following are not implemented for the GX728MF-IR28:

• Device Management:
  • GetSystemUris
• Media1:
  • GetMetadataConfiguration
  • GetProfile
  • GetStreamUri
  • StartMulticastStreaming
  • StopMulticastStreaming
• Media2:
  • GetStreamUri
  • StartMulticastStreaming
  • StopMulticastStreaming
• PTZ:
  • not supported

What's next

• More comprehensive unit tests

Features and bugs

Please file feature requests and bugs with the issue tracker.

Known Issues

Github Issue #23, in Flutter when using v2.0.13+4 and above you may see the following message when performing a dart pub get:

Because every version of flutter from sdk depends on collection 1.16.0 and xml >=6.2.0 depends on collection ^1.17.0, flutter from sdk is incompatible with xml >=6.2.0.
And because easy_onvif >=2.0.13+11 depends on xml ^6.2.2, flutter from sdk is incompatible with easy_onvif >=2.0.13+11.
So, because cow depends on both flutter from sdk and easy_onvif ^2.0.13+13, version solving failed.
pub get failed (1; So, because cow depends on both flutter from sdk and easy_onvif ^2.0.13+13, version solving failed.)

The fix for this is to add the following section to your pubspec.yaml:

dependency_overrides:
  collection: ^1.17.0

Breaking changes

v2.1.0

The following method signatures have changed in this version:

• PTZ - continuousMove
• PTZ - ``

Contributing

Any help from the open-source community is always welcome and needed:

• Found an issue?
  • Please fill a bug report with details.
• Need a feature?
  • Open a feature request with use cases.
• Are you using and liking the project?
  • Promote the project: create an article or post about it
  • Make a donation
• Do you have a project that uses this package
  • let's cross promote, let me know and I'll add a link to your project
• Are you a developer?
  • Fix a bug and send a pull request.
  • Implement a new feature.
  • Improve the Unit Tests.
• Have you already helped in any way?
  • Many thanks from me, the contributors and everybody that uses this project!

If you donate 1 hour of your time, you can contribute a lot, because others will do the same, just be part and start with your 1 hour.