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172 lines
5.1 KiB
Text
172 lines
5.1 KiB
Text
Requirements to be a TWAIN-Compliant Source
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Requirements
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TWAIN-compliant Sources must support the following:
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Operations
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----------
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DG_CONTROL / DAT_CAPABILITY / MSG_GET
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DG_CONTROL / DAT_CAPABILITY / MSG_GETCURRENT
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DG_CONTROL / DAT_CAPABILITY / MSG_GETDEFAULT
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DG_CONTROL / DAT_CAPABILITY / MSG_RESET
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DG_CONTROL / DAT_CAPABILITY / MSG_SET
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DG_CONTROL / DAT_EVENT / MSG_PROCESSEVENT
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DG_CONTROL / DAT_IDENTITY / MSG_GET
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DG_CONTROL / DAT_IDENTITY / MSG_OPENDS
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DG_CONTROL / DAT_IDENTITY / MSG_CLOSEDS
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DG_CONTROL / DAT_PENDINGXFERS / MSG_ENDXFER
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DG_CONTROL / DAT_PENDINGXFERS / MSG_GET
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DG_CONTROL / DAT_PENDINGXFERS / MSG_RESET
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DG_CONTROL / DAT_SETUPMEMXFER / MSG_GET
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DG_CONTROL / DAT_STATUS / MSG_GET
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DG_CONTROL / DAT_USERINTERFACE / MSG_DISABLEDS
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DG_CONTROL / DAT_USERINTERFACE / MSG_ENABLEDS
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DG_CONTROL / DAT_XFERGROUP / MSG_GET
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DG_IMAGE / DAT_IMAGEINFO / MSG_GET
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DG_IMAGE / DAT_IMAGELAYOUT / MSG_GET
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DG_IMAGE / DAT_IMAGELAYOUT / MSG_GETDEFAULT
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DG_IMAGE / DAT_IMAGELAYOUT / MSG_RESET
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DG_IMAGE / DAT_IMAGELAYOUT / MSG_SET
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DG_IMAGE / DAT_IMAGEMEMXFER / MSG_GET
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DG_IMAGE / DAT_IMAGENATIVEXFER / MSG_GET
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Capabilities
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------------
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Every Source must support all five DG_CONTROL / DAT_CAPABILITY operations on:
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CAP_XFERCOUNT
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Every Source must support DG_CONTROL / DAT_CAPABILITY MSG_GET on:
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CAP_SUPPORTEDCAPS
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CAP_UICONTROLLABLE
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Sources that supply image information must support DG_CONTROL / DAT_CAPABILITY /
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MSG_GET, MSG_GETCURRENT, MSG_GETDEFAULT on:
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ICAP_COMPRESSION
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ICAP_PLANARCHUNKY
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ICAP_PHYSICALHEIGHT
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ICAP_PHYSICALWIDTH
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ICAP_PIXELFLAVOR
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Sources that supply image information must support DG_CONTROL / DAT_CAPABILITY /
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MSG_GET, MSG_GETCURRENT, MSG_GETDEFAULT, MSG_RESET and MSG_SET on:
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ICAP_BITDEPTH
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ICAP_BITORDER
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ICAP_PIXELTYPE
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ICAP_UNITS
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ICAP_XFERMECH
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ICAP_XRESOLUTION
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ICAP_YRESOLUTION
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All Sources must implement the advertised features supported by their devices. They must
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make these features available to applications via the TWAIN protocol. For example, a Source
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thats connected to a device that has an ADF must support DG_CONTROL /
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DAT_CAPABILITY / MSG_GET, MSG_GETCURRENT, MSG_GETDEFAULT on:
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CAP_FEEDERENABLED
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CAP_FEEDERLOADED
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and DG_CONTROL / DAT_CAPABILITY / MSG_GET, MSG_GETCURRENT,
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MSG_GETDEFAULT, MSG_RESET and MSG_SET on:
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CAP_AUTOFEED
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If the ADF also supports ejecting and rewinding of pages then the Source should also support
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DG_CONTROL / DAT_CAPABILITY / MSG_GET, MSG_GETCURRENT,
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MSG_GETDEFAULT, MSG_RESET and MSG_SET on:
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CAP_CLEARPAGE
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CAP_REWINDPAGE
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*******************************************************************************
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From Application to Source Manager (Control Information)
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Data Group Data Argument Type Message
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DG_CONTROL DAT_IDENTITY MSG_CLOSEDS
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MSG_GETDEFAULT
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MSG_GETFIRST
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MSG_GETNEXT
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MSG_OPENDS
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MSG_USERSELECT
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DG_CONTROL DAT_PARENT MSG_CLOSEDSM
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MSG_OPENDSM
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DG_CONTROL DAT_STATUS MSG_GET
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From Application to Source (Control Information)
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Data Group Data Argument Type Message
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DG_CONTROL DAT_CAPABILITY MSG_GET
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MSG_GETCURRENT
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MSG_GETDEFAULT
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MSG_QUERYSUPPORT
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MSG_RESET
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MSG_SET
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DG_CONTROL DAT_CUSTOMDSDATA MSG_GET
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MSG_SET
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DG_CONTROL DAT_FILESYSTEM MSG_AUTOMATICCAPTURE
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DIRECTORY
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MSG_CHANGEDIRECTORY
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MSG_COPY
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MSG_CREATEDIRECTORY
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MSG_DELETE
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MSG_FORMATMEDIA
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MSG_GETCLOSE
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MSG_GETFIRSTFILE
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MSG_GETINFO
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MSG_GETNEXTFILE
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MSG_RENAME
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DG_CONTROL DAT_EVENT MSG_PROCESSEVENT
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DG_CONTROL DAT_PASSTHRU MSG_PASSTHRU
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DG_CONTROL DAT_PENDINGXFERS MSG_ENDXFER
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MSG_GET
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MSG_RESET
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MSG_STOPFEEDER
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DG_CONTROL DAT_SETUPFILEXFER MSG_GET
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MSG_GETDEFAULT
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MSG_RESET
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MSG_SET
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DG_CONTROL DAT_SETUPFILEXFER2 MSG_GET
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MSG_GETDEFAULT
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MSG_RESET
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MSG_SET
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DG_CONTROL DAT_SETUPMEMXFER MSG_GET
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DG_CONTROL DAT_STATUS MSG_GET
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DG_CONTROL DAT_USERINTERFACE MSG_DISABLEDS
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MSG_ENABLEDS
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MSG_ENABLEDSUIONLY
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DG_CONTROL DAT_XFERGROUP MSG_GET
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MSG_SET
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From Application to Source (Image Information)
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Data Group Data Argument Type Message
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DG_IMAGE DAT_CIECOLOR MSG_GET
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DG_IMAGE DAT_EXTIMAGEINFO MSG_GET
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DG_IMAGE DAT_GRAYRESPONSE MSG_RESET
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MSG_SET
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DG_IMAGE DAT_IMAGEFILEXFER MSG_GET
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DG_IMAGE DAT_IMAGEINFO MSG_GET
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DG_IMAGE DAT_IMAGELAYOUT MSG_GET
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MSG_GETDEFAULT
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MSG_RESET
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MSG_SET
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DG_IMAGE DAT_IMAGEMEMXFER MSG_GET
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DG_IMAGE DAT_IMAGENATIVEXFER MSG_GET
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DG_IMAGE DAT_JPEGCOMPRESSION MSG_GET
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MSG_GETDEFAULT
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MSG_RESET
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MSG_SET
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DG_IMAGE DAT_PALETTE8 MSG_GET
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MSG_GETDEFAULT
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MSG_RESET
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MSG_SET
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DG_IMAGE DAT_RGBRESPONSE MSG_RESET
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MSG_SET
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From Application to Source (Audio Information)
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Data Group Data Argument Type Message
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DG_AUDIO DAT_AUDIOFILEXFER MSG_GET
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DG_AUDIO DAT_AUDIOINFO MSG_GET
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DG_AUDIO DAT_AUDIONATIVEXFER MSG_GET
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From Source Manager to Source (Control Information)
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Data Group Data Argument Type Message
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DG_CONTROL DAT_IDENTITY MSG_CLOSEDS
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MSG_GET
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MSG_OPENDS
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From Source to Application (Control Information via the Source Manager)
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(Used by Windows Sources only)
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Data Group Data Argument Type Message
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DG_CONTROL DAT_NULL MSG_CLOSEDSOK
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MSG_CLOSEDSREQ
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MSG_DEVICEEVENT
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MSG_XFERREADY
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