SignMatic Application Package

SignMatic Application Package
Developer	Netroda Technologies
Type	File Type
Extension(s)	.smpk
Magic Numbers	16 0F 17 1B "SignMatic"
Current Version	1.0.0 (08 Feb. 2023)
Platform	SignMatic
Extended from	PK Archive, NEFastAccess-VarH Header format, JSON, PNG

SignMatic Application Package (sometimes referred to as SMAP) is a distribution file format for the open Digital Signage System SignMatic. The File-Package contains all necessary information for a application to be installed on a local system.

Overview

SignMatic Application Packages are encoded file archives with a variable size header, encoded bitmap image of the Application icon and various metadata. The files are opened by the system utility smdepak (console application) or smdepakw (User Interface), that performs various compatibility checks including versioning, downgrade and upgrade options as well as the actuall unpacking and registration of the application to the signmatic applications directory.

Technical

The File consists of the magic sequence 0x16 0x0F 0x17 0x1B followed by literal SignMatic The Relatively small header is encoded with NEFastAccess-LOffset header format (2 bytes prefix, shift, 2 bytes suffix), and followed by the archive.

File size is not limited to a certain size, the header size however must be in the range of 196 to 4096 bytes, given the fact that for the necessary metadata this is absoloutely sufficient.

The actual Application contents are stored in the PK-Format (ZIP)

Generation

SignMatic Application Packages can be created using the command line tool smpak (delivered with SignMatic Studio). The application folder requires a valid build information file (example below) to be present in the base directory named "build".

{
	"appId"			: "a4bc7782c208449095bf54d5d495aad9",
	"appVer"		: [1,0,0],
	"bVer"			: 1.0,
	"sMinReq"		: [1,1,7280],
	"appName"		: "Airport",
	"appDescription"	: "This demo features a airport information screen, to display live data of passenger flights on your SignMatic.",
	"vendor"		: "Netroda Technologies",
	"website"		: "https://netroda.com/a/k/products/ess-i/signmatic/demo/",
	"privacyPolicy"		: "https://netroda.com/a/k/products/ess-i/signmatic/privacy",
	"termsOfService"	: "https://netroda.com/a/k/products/ess-i/signmatic/terms",
	"imageIcon64"		: "data:image/png;base64,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",
	"color"			: "486ADA"
}

Support

Support for specific applications is usually carried out by the application vendor, there is a option to reference a URL to the application vendor's product website for help.

Version history

Revision	Released	Lifecycle	Compatibility
1.0.0	08 Feb. 2023	Not announced	1.1.7280+

See also

• Digital Signage
• SignMatic