Difference between revisions of "Media Center Automation"

Revision as of 18:35, 22 January 2007 (view source) Gateley (talk | contribs) ← Older edit		Revision as of 18:38, 22 January 2007 (view source) Gateley (talk | contribs) Newer edit →
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	* [[MJPlaybackAutomation]] - controls playback and provides information about the currently playing track		* [[MJPlaybackAutomation]] - controls playback and provides information about the currently playing track
	* [[MJFilesAutomation]] - represents a collection of files		* [[MJFilesAutomation]] - represents a collection of files
		+	* [[MJFileAutomation]] - object for dealing with a single file
		+	* [[MJCurPlaylistAutomation]] - interface for working with "Playing Now" (the current playlist)
		+	* [[MJMixerAutomation]] - provides volume, balance, and mute control
		+	* [[MJPlaylistsAutomation]] - represents a collection of playlists
−	===Functions===
−	number GetNumberFiles()
−	Description: returns the number of files contained in the collection
−	Return Value: number of files
−
−	void Sort()
−	Description: sorts the list of files using user selected sorting scheme.
−
−	MJFileAutomation * GetFile(number nFile)
−	Description: gets the MJFileAutomation interface (see below) for the given file index
−	Parameters:
−	* nFile: the index of the file to retrieve (0 to GetNumberFiles() - 1)
−	Return Value: MJFileAutomation interface
−
−	void Play()
−	Description: plays the list of files
−
−	void PlayOrShow()
−	Description: decides whether to play or show the list of files. If the list contains only image files then show command will be used, otherwise this function will use play command.
−
−	boolean AlbumGroup(boolean bSort, boolean bGroupIfOneAlbum)
−	Description: groups the list of files by album. If this function is used, the collection of files will contain one file from each album, which can be expanded using the MJFileAutomation::GetAlbumFiles(...) call.
−	Parameters:
−	* bSort: sort the list of files after grouping
−	* bGroupIfOneAlbum: instructs the function whether to group by album if the list contains only one album.
−	Return Value: if grouping by album is possible, the function will return true, otherwise false.
−
−	void AddFile(string strFilename)
−	Description: Add the file to the collection
−	Parameters:
−	* strFilename: the name of the file to add
−
−	void AddFileByKey(number nKey)
−	Description: Add the file to the collection
−	Parameters:
−	* nKey: the key of the file to add
−
−	boolean RemoveFile(number nIndex)
−	Description: Remove the file from the collection
−	Parameters:
−	* nIndex: the number of the file to remove
−	Return Value: true only if the file was removed
−
−	void RemoveAll()
−	Description: Remove all files from the collection
−
−	string Analyze(string strWhat)
−	Description: Analyze the files for information, currently size or duration is supported
−	Parameters:
−	* strWhat: size or duration
−	Return Value: the size or duration, or "-1" if it couldn't be computed
−
−	void MoveToTop(number nIndex)
−	Description: moves the specified file to the top position
−	Parameters:
−	* nIndex: the number of the file to move
−
−	void Shuffle()
−	Description: shuffles the order of the collection
−
−	void Set(number nIndex, string strField, string strValue)
−	Description: Changes the field of the specified file to a new value
−	Parameters:
−	* nIndex: the position of the file in the collection
−	* strField: the name of the field to change
−	* strValue: the new value
−
−	number AddNewFile()
−	* Description: Adds a new file to the end of the collection
−	* Return Value: non-zero only if a new file was added
−
−	number AddExistingFile(IDispatch *pdispFiles, long nIndex, nInsertIndex)
−	Description: Add a file from another MJFilesAutomation object
−	Parameters:
−	* pdispFiles: the IDispatch of the other MJFilesAutomation
−	* nIndex: the position of the file in the other object
−	* nInsertIndex: the position to insert at
−	Return Value: The position it was inserted at, or -1 if unable to insert
−
−	string Get(number nIndex, string strField)
−	Description: Get the value of a field for the specified file
−	Parameters:
−	* nIndex: the position of the file in the collection
−	* strField: the name of the field
−	Return Value: The value of the field
−
−	number Save(string strFilename, string strType, number nFlags)
−	Description: Save the files as a playlist, either m3u or mpl format
−	Parameters:
−	* strFilename: The name of the playlist file
−	* strType: "m3u" or "mpl"
−	* nFlags: For m3u, if nFlags & 0x1, then use relative paths
−	Return Value: Nonzero on success, zero on failure
−
−	void Filter(string strSearchString)
−	Description: Remove all files in the collection not meeting the criteria in strSearchString
−	Parameters:
−	* strSearchString: a Media Center search
−
−	void AddFileOverwriteExistingInfo(string strFilename)
−	Description: Add the file to the collection, overwriting the old information if it exists.
−	Parameters:
−	* strFilename: the name of the file
−
−	===Properties===
−	number Position() (read / write)
−	Description: the index of the selected file.  When starting playback, the selected file will get played.  Other interfaces and functions may also honor the position.  Note that the position will be preserved through shuffles, removes, and other MJFiles functions. (-1 means no file is selected)
−
−	==MJFileAutomation - object for dealing with a single file==
−	===Functions===
−	MJPlaylistsAutomation * GetPlaylists()
−	Description: returns the collection of playlists that the given file is in
−	Return Value: MJPlaylistsAutomation interface (see below)
−
−	string GetImageFile(MJImageFileFlags nImageFileFlag)
−	Description: gets the filename of an image associated with the file
−	Parameters:
−	* nImageFileFlag:
−	** IMAGEFILE_DISPLAY -  display image (tag or database) (uses MJ logo if file doesn't have an image)
−	** IMAGEFILE_IN_DATABASE - database image
−	** IMAGEFILE_IN_FILE - tag image (stored inside of file)
−	** IMAGEFILE_THUMBNAIL_SMALL, IMAGEFILE_THUMBNAIL_MEDIUM, IMAGEFILE_THUMBNAIL_LARGE - small, medium, and large thumbnail images for the file
−	** IMAGEFILE_DISPLAY_NO_DEFAULT - like IMAGEFILE_DISPLAY except that it won't return the logo when there is no art
−	** IMAGEFILE_DISPLAY_NO_DEFAULT_STANDARD_JPEG - like IMAGEFILE_DISPLAY_NO_DEFAULT except that it always returns a standard (non-progressive) JPEG
−	Note: Do not delete the files returned by this function.  Media Center will do any necessary cleanup.  Also, subsequent calls may return the same filename (if a temp file is being used) so you must load / cache the image instead of caching the filenames.
−	Return Value: a filename of the image file
−
−	string SetImageFile(string strImageFile, MJImageFileFlags nImageFileFlag)
−	Description: sets the image for the file
−	Parameters:
−	* strImageFile: filename of the image
−	* nImageFileFlag: IMAGEFILE_IN_DATABASE - database image, IMAGEFILE_IN_FILE - tag image (stored inside of file)
−	Return Value: 0 on failure, non-zero on success
−
−	string GetFormattedFileSize()
−	Description: gets the display friendly file size
−	Return Value: a string representing the file size (i.e. "23.434 MB")
−
−	string GetFormattedFileDate()
−	Description: gets the display friendly file date / time
−	Return Value: a string representing the file date / time (i.e. "2/30/2002 8:01 PM")
−
−	string GetFormattedDuration()
−	Description: gets the display friendly duration
−	Return Value: a string representing the duration (i.e. "3:04")
−
−	string GetFormattedLastPlayed()
−	Description: gets the display friendly last played date / time
−	Return Value: a string representing the duration (i.e. "2/30/2002 8:01 PM")
−
−	string GetAvailableFilename()
−	Description: returns the filename in the format that's available to the system, so that files on a removable device get returned, for example, as "D:\1.mp3" instead of "(0xF43EA231):\1.mp3"
−	Return Value: a string representing the filename
−
−	boolean SaveToTag()
−	Description: Forces Media Center to save the file information to the tag.
−	Return Value: 0 - failed, 1 - success.
−
−	string Get(string strField, boolean bFormatted)
−	Description: generic function to get value for the specified field.
−	Parameters:
−	* strField: name of the field (e.g. Artist, Album...)
−	* bFormatted: determines whether the return value should beformated.
−	Return Value: value of the field
−
−	boolean Set(string strField, string strValue)
−	Description: generic function to set value for the specified field.
−	Parameters:
−	* strField: name of the field (e.g. Artist, Album...)
−	* strValue: new value of the field
−	Return Value: 0 - failed, 1 - success.
−
−	MJFilesAutomation * GetAlbumFiles()
−	Description: retrieves the list of files which belong to the same album (use to expand after an album group)
−	Return Value: MJFilesAutomation interface
−
−	long GetKey()
−	Description: Gets the key of the file
−	Return Value: the key
−
−	boolean DeleteFile(long hwndParent)
−	Description: Deletes the file (with confirmation)
−	Parameters:
−	* hwndParent: The handle of the parent window or null
−	Return Value: nonzero on success, zero on failure
−
−	boolean RotateImage(long nDegrees)
−	Description: If the file is a JPEG, rotate the image
−	Parameters:
−	* nDegrees: How much to rotate
−	Return Value: TRUE
−
−	string GetFilledTemplate(string strTemplate)
−	Description: Evaluates an expresion for the file and returns the result
−	Parameters:
−	* strTemplate: the expression
−	Return Value: the result
−
−	boolean SilentDeleteFile()
−	Description: Deletes the file (no confirmation)
−	Return Value: nonzero on success, zero on failure
−
−	void UpdatePlaybackStats(long nPlays)
−	Description: Increases the file playcount by nPlays and sets the last played time to now
−	Parameters:
−	* nPlays: number of times the file was played
−
−	boolean SaveInfoToExternalFile(string strFilename)
−	Description: Save the database information (cover art and fields) for the file to an external file
−	Parameters:
−	* strFilename: the name of the external file
−	Return Value: TRUE
−
−	boolean UpdateFromFile(boolean bForce, boolean bOnlyNewFields)
−	Description: Updates the fields from the file
−	Parameters:
−	* bForce: if true, force the update, otherwise only update if the file has changed
−	* bOnlyNewFields: Only change fields that are new
−	Return Value: TRUE only if the file was updated
−
−	void UpdateDBLocation(long nAppendDBLocations, long nRemoveDBLocations)
−	Description: Select which portions of the database the file appears in
−	Parameters:
−	* nAppendDBLocations: Which portions to add the file to. Value is a bitwise OR of
−	** DB_LOCATION_INVALID
−	** DB_LOCATION_MAIN
−	** DB_LOCATION_PLAYING_NOW
−	** DB_LOCATION_CD
−	** DB_LOCATION_EXPLORER
−	** DB_LOCATION_UNASSIGNED
−	** DB_LOCATION
−	** DB_LOCATION_FILE_TRANSFER
−	** DB_LOCATION_HANDHELD
−	** DB_LOCATION_GROUPING
−	** DB_LOCATION_REMOVED
−	** DB_LOCATION_DOWNLOADING
−	** DB_LOCATION_PODCAST_FEED
−	* nRemoveDBLocations: Which portions to remove the file from, same value as nAppendDBLocations
−
−	boolean SetNoDirty(string strField, string strValue)
−	Description: Change a file's field without marking it as dirty
−	Parameters:
−	* strField: the field name
−	* strValue: the field value
−	Return Value: nonzero on success, zero on failure
−
−	===Properties===
−	string Filename() (read / write)
−	Description: the filename (i.e. "c:\Music\Good Song.mp3")
−
−	string Artist() (read / write)
−	Description: the artist (i.e. "Metallica")
−
−	string Album() (read / write)
−	Description: the album (i.e. "ReLoad")
−
−	string Name() (read / write)
−	Description: the name of the track (i.e. "Unforgiven II")
−
−	number Filesize() (read / write)
−	Description: the filesize in bytes
−
−	number Duration() (read / write)
−	Description: the file duration in seconds
−
−	string Genre() (read / write)
−	Description: the genre (i.e. "Rock")
−
−	number Year() (read / write)
−	Description: the year (i.e. 1997)
−
−	string Comment() (read / write)
−	Description: the comment
−
−	number Bitrate() (read / write)
−	Description: the bitrate (i.e. 128 kbps)
−
−	number Tracknumber() (read / write)
−	Description: the track number (i.e. 4)
−
−	number Filedate() (read / write)
−	Description: the file's date (seconds past 1970)
−
−	string Custom1() (read / write)
−	Description: the MJ-specific "Custom1" field
−
−	string Custom2() (read / write)
−	Description: the MJ-specific "Custom2" field
−
−	string Custom3() (read / write)
−	Description: the MJ-specific "Custom3" field
−
−	number PlayCounter() (read / write)
−	Description: the number of times the track has been played in Media Center
−
−	number LastPlayed() (read / write)
−	Description: the date the file was last played in Media Center (seconds past 1970)
−
−	number Rating() (read / write)
−	Description: the rating (MJ-specific) (note: 0 = ?, otherwise 1-5)
−
−	string Filetype() (read / write)
−	Description: the extension of the file (used by MJ to choose playback plugins, etc.) (i.e. "mp3")
−
−	string Lyrics() (read / write)
−	Description: the lyrics
−
−	string Notes() (read / write)
−	Description: the notes
−
−	string AlbumArtist() (read / write)
−	Description: the album artist
−
−	==MJCurPlaylistAutomation - interface for working with "Playing Now" (the current playlist)==
−	===Functions===
−	number GetNumberFiles()
−	Description: returns the number of files in "Playing Now"
−	Return Value: number of files
−
−	MJFileAutomation * GetFile(number nFile)
−	Description: gets the MJFileAutomation interface (see below) for the given file index
−	Parameters:
−	Return Value: MJFileAutomation interface
−
−	void RemoveAllFiles()
−	Description: removes all of the files from "Playing Now" (stops playback)
−
−	boolean RemoveFile(number nFile)
−	Description: removes a specific file from "Playing Now"
−	Parameters:
−	* nFile: the index of the file to retrieve (0 to GetNumberFiles() - 1)
−	Return Value: 0 on failure, non-zero on success
−
−	boolean AddFile(string strFilename, number nPosition)
−	Description: adds a file to "Playing Now"
−	Parameters:
−	* strFilename: the filename of the file to add
−	* nFile: the new index of the file
−	Return Value: 0 on failure, non-zero on success
−
−	boolean MoveFile(number nFileOld, number nFileNew)
−	Description: moves a file to a new location in "Playing Now"
−	Parameters:
−	* nFileOld: the index of the file to move
−	* nFileNew: the index to move the file to
−	Return Value: 0 on failure, non-zero on success
−
−	boolean ReShuffleFiles()
−	Description: shuffles "Playing Now" so it's in a random order
−	Return Value: 0 on failure, non-zero on success
−
−	number GetNextFile()
−	Description: gets the index of the file to play on "Next"
−	Return Value: index of file
−
−	boolean GetPreviousFile()
−	Description: gets the index of the file to play on "Previous"
−	Return Value: index of file
−
−	boolean GetCanPlayNext()
−	Description: Determine if there is another file to play after the currently playing file
−	Return Value: true only if there is one
−
−	===Properties===
−	number Position() (read / write)
−	Description: the index of the current track
−
−	number Shuffle() (read / write)
−	Description: the shuffle state (0 = off, 1 = on)
−
−	number Continuous() (read / write)
−	Description: the continuous state (0 = off, 1 = on)
−
−	==MJMixerAutomation - provides volume, balance, and mute control==
−	===Functions===
−
−	void SetEQBand(number nBand, number nValue)
−	Description: sets the value of an equalizer band
−	Parameters:
−	* nBand: the equalizer band (0 = preamp, 1 - 10 = eq bands)
−	* nValue: the new band value (-100 to 100 where -100 is full cut, 0 is no gain, and 100 is full gain)
−
−	number GetEQBand(number nBand)
−	Description: gets the value of an equalizer band
−	Parameters:
−	* nBand: the equalizer band (0 = preamp, 1 - 10 = eq bands)
−	Return Value: value of the specified band (-100 to 100 where -100 is full cut, 0 is no gain, and 100 is full gain)
−
−	void UpdateEQSettings(number bUpdatePlayer, number bUpdateMiniMe)
−	Description: updates the internal settings to reflect outside changes (made in DSP Studio, etc.) -- not necessary in most cases
−	Parameters:
−	* bUpdatePlayer: whether to update the player window (0 = no, 1 = yes)
−	* bUpdateMiniMe: whether to update the mini-me window (0 = no, 1 = yes)
−
−	void ShowDSP()
−	Description: Activate the DSP
−
−	===Properties===
−	number Volume() (read / write)
−	Description: the volume (0 = no volume, 100 = full volume)
−
−	number Balance() (read / write)
−	Description: the balance between left and right (-100 = all left, 0 = centered, 100 = all right)
−
−	boolean Mute() (read / write)
−	Description: the mute state (0 = not muted, 1 = muted)
−
−	boolean EQOn() (read / write)
−	Description: whether the equalizer is on or off (0 = off, 1 = on)
−
−	==MJPlaylistsAutomation - represents a collection of playlists==
	===Functions===		===Functions===
	number GetNumberPlaylists()		number GetNumberPlaylists()

---

Revision as of 18:38, 22 January 2007

Media Center exports much of its power and functionality through COM automation interfaces. This makes it easy to create your own plug-ins for Media Center that integrate tightly with its interface. Since automation interfaces are based on COM, these plug-ins can be written in almost any language. (C++, VB, Delphi, etc.). Also, the interfaces can be accessed in Metamorphis skins and Display plug-ins (see documentation for the plug-ins). Prior to build 9.1.238, the only way to access the automation interfaces was to write a plug-in for MC because the interfaces were not accessible by objects which were outside Media Center's process. Now, any application, including VBS and Java script, can start MC or just run it to query information about MC's database.

The functions in this document are for Media Center 11.1. Most will work with earlier versions, but not all.

Initialization

Media Center can be initialized by in-proc or out-of-proc objects.

Out-of-proc initialization (C++):

#import "Media Jukebox.tlb" no_namespace, named_guids

void GetMJAutomation()
{
    IMJAutomationPtr pMJ;

    HRESULT hr = pMJ.GetActiveObject (L"MediaJukebox Application");
    if (hr != S_OK)
        pMJ.CreateInstance(L"MediaJukebox Application");
}

Out-of-proc initialization (VB):

Private Sub Form_Load()
' First try to get an already running object
On Error Resume Next
Set myobj = GetObject(, "MediaJukebox Application")

If Err.Number = 429 Then
    'Then, create a new object
    Set myobj = CreateObject("MediaJukebox Application")

End Sub

NOTE: If Media Center was created as out-of-proc object, the main window of the program will be invisible. To show the window use ShowProgram function from MJAutomation interface.

For information on how to get access to MJAutomation interface from in-proc plug-ins see plug-in SDK.

Automation Objects

• MJAutomation - core object... provides access to all other objects
• MJPlaybackAutomation - controls playback and provides information about the currently playing track
• MJFilesAutomation - represents a collection of files
• MJFileAutomation - object for dealing with a single file
• MJCurPlaylistAutomation - interface for working with "Playing Now" (the current playlist)
• MJMixerAutomation - provides volume, balance, and mute control
• MJPlaylistsAutomation - represents a collection of playlists

Functions

number GetNumberPlaylists() Description: returns the number of playlists contained in the collection Return Value: number of playlists

MJPlaylistAutomation * GetPlaylist(number nPlaylist) Description: gets the MJPlaylistAutomation interface (see below) for the given playlist index Parameters:

• nPlaylist: the index of the playlist to retrieve (0 to GetNumberPlaylists() - 1). To retrieve Top Hits and Recently Imported playlists use index -1 and -2 respectively.

Return Value: MJPlaylistAutomation interface

MJPlaylistAutomation * CreatePlaylist(string PlaylistPath, string PlaylistName) Description: creates new playlist at the specified location Parameters:

• PlaylistPath: location of the playlist. If empty, the playlist will be created in the root of the playlist tree.
• PlaylistName: name of the new playlist

Return Value: MJPlaylistAutomation interface

boolean DeletePlaylist(string PlaylistPath, string PlaylistName) Description: deletes existing playlist Parameters:

• PlaylistPath: location of theplaylist.
• PlaylistName: name of the new playlist

Return Value: true - if success, otherwise false.

IMJPlaylistAutomation *CreateServicelist(string Path, string Name, string Service, string ServiceID, string ServiceData) Description: Finds or creates the playlist associated with a service Parameters:

• Path: Not Used
• Name: The name of the playlist
• Service: The name of the service
• ServiceID: The ID of the service
• ServiceData: Service-specific data

Return Value: the MJPlaylistAutomation interface

MJPlaylistAutomation - interface for working with a single playlist

Functions

MJFilesAutomation * GetFiles() Description: gets the collection of files in the playlist Return Value: MJFilesAutomation interface

boolean AddFile(string strFilename, number nLocation) Description: adds new file to the playlist Parameters:

• strFilename: the filename of the file to add
• nLocation: position of the file in the playlist. If position -1, the file will be added to the end of the playlist.

Return Value: 0 on failure, non-zero on success

boolean RemoveFile(string strFilename) Description: removes existing file from the playlist Parameters:

• strFilename: the filename of the file to delete

Return Value: 0 on failure, non-zero on success

long GetID() Description: returns the ID associated with a playlist Return Value: the ID

string Get(string bstrProperty) Description: lookup a property associated with a playlist Parameters:

• bstrProperty: the name of the property

Return Value: the value of the property for this playlist

void Set(string strProperty, string bstrValue) Description: change the value of a property for this playlist Parameters:

• strProperty: the property name
• bstrValue: The new value

boolean SaveAsRSS(string strFilename, string strURLPrefix, string strUser, string strEmail) Description: 11.1.134 or higher, saves the playlist as an RSS (PodCast/PerbCast) file Parameters:

• strFilename: the filename of the RSS file
• strURLPrefix: The URL prefix which will be concatenated with the keys of the playlist files to form the URL for accessing them
• strUser: the name of the PerbCast creator
• strEmail: the e-mail address of the PerbCast creator

Return Value: 0 on failure, non-zero on success

Properties

string Name() (read / write) Description: the name of the playlist (i.e. "My Playlist")

string Path() (read / write) Description: the path of the playlist, delimited by backslashes (note: does not contain the name) (i.e. "Mixes\\New Playlist Group")

MJSchemeAutomation - interface for working with Media Library

Functions

string GetName() Description: gets the name of the scheme item (i.e. "Classic Rock", "Artist\Album", etc.) Return Value: a string containing the name of the scheme item

number GetNumberSchemes() Description: gets the number of children schemes Return Value: number of children schemes

MJSchemeAutomation * GetScheme(number nScheme) Description: gets the specified child scheme Parameters:

• nScheme: the index of the child scheme to retrieve (0 to GetNumberSchemes() - 1)

Return Value: a MJSchemeAutomation interface for the specified child scheme

MJFilesAutomation * GetFiles() Description: gets the collection of files in the scheme Return Value: MJFilesAutomation interface of files

string GetSchemeName(number nScheme) Description: gets the name of the specified child scheme (faster than GetScheme(...)) Parameters:

• nScheme: the index of the child scheme to retrieve (0 to GetNumberSchemes() - 1)

Return Value: a string containing the name of the child scheme item

MJVersionAutomation - interface for getting Media Center version information

Properties

number Major (read only) Description: Major version of the Media Center (i.e. 9)

number Minor (read only) Description: Minor Version of the Media Center (i.e. 0)

number Build (read only) Description: Build number of the Media Center (i.e. 160)

string Version (read only) Description: string version of the Media Center (i.e. "9.0.160")

MJInternetAutomation - interface for helping in downloading files from internet

Functions

string DownloadToString(string URL) Description: Downloads web page from the specified URL to a string. (should not be used with binary data, only web pages) Parameters:

• URL: The URL from which the web page will be downloaded

Return Value: a string containing the contents of the web page.

number DownloadToFile(string URL, string FileName) Description: Downloads data from a resource identified by a URL to a local file. Parameters:

• URL: The URL from which the data will be downloaded.
• FileName: The name of the local file to receive the data.

Return Value: True if the function completed successfully, otherwise FALSE.

string DownloadToTempFile(string URL) Description: Downloads data from a resource identified by a URL to a local temp file. Parameters:

• URL: The URL from which the data will be downloaded.

Return Value: Returns the full path to the temp file.

void Cancel() Description: Cancels previously called download function. Can be used only when DownloadMode set to DOWNLOADMODE_NO_UI or DOWNLOADMODE_NO_UI_BLOCKING.

Properties

MJInetDownloadModes DownloadMode (read / write) Description: Gets or sets download mode.

• DOWNLOAD_MODE_DEFAULT - displays UI while downloading files from the Internet
• DOWNLOADMODE_NO_UI - does not display UI but processes the message loop so the Cancel function can be called from the same thread.
• DOWNLOADMODE_BLOCKING - will lock the app until the download is finished.
• DOWNLOAD_MODE_NO_AUTHENTICATION - disables authentication.

Example:

MJIA.DownloadMode = DOWNLOADMODE_NO_UI DOWNLOADMODE_BLOCKING;

MJViewItemAutomation - interface for creating / walking the Media Center tree structure

Functions

string GetName() Description: gets the name of this item Return Value: the name of the item

string GetFullName() Description: gets the full name of this item (the whole path -- backslash delimited -- i.e. Media Library\Audio\Artist/Album\Bob Dylan) Return Value: the full name of the item

MJFilesAutomation * GetFiles() Description: gets the files associated with the current item Return Value: MJFilesAutomation interface

void DoCommand(number nParam) Description: performs the command associated with the current item (play / show, playing now command, etc.) Parameters:

• nParam: for future use -- must be zero

number GetNumberChildren() Description: gets the number of child items Return Value: the number of children

string GetChildName(number nIndex) Description: gets the name of a child item Parameters:

• nIndex: the index of the child item (0 to GetNumberChildren() - 1)

Return Value: the name of the child item

MJViewItemAutomation * GetChild(number nIndex) Description: gets the MJViewItemAutomation interface (see below) for the given child index Parameters:

• nIndex: the index of the child to retrieve (0 to GetNumberChildren() - 1)

Return Value: MJViewItemAutomation interface

boolean GetChildHasChildren(number nIndex) Description: gets the name of a child item Parameters:

• nIndex: the index of the child item (0 to GetNumberChildren() - 1)

Return Value: whether the specified child has children of its own

MJViewItemAutomation * GetParent() Description: gets the parent item Return Value: MJViewItemAutomation interface

string GetThumbnailFilenames(number nThumbnailSize, number nMaxCount) Description: not implemented Parameters:

• nThumbnailSize: N/A
• nMaxCount: N/A

Return Value: N/A

boolean GetChildIsFolder(number nIndex) Description: determine if the specified child contains sub-view items Parameters:

• nIndex: the number of the child

Return Value: true only if the child contains sub-view items

boolean GetIsSearch() Description: not implemented Return Value: FALSE

MJFieldsAutomation - interface for working with database fields

Functions

number GetNumberFields() Description: gets the total number of database fields Return Value: the number of fields

IMJFieldAutomation * GetField(number nField) Description: gets the field at the given index Parameters:

• nField: the zero based index of the field

Return Value: MJFieldAutomation * to the field (see documentation below)

IMJFieldAutomation * CreateFieldSimple(string strFieldName, string strDisplayName, number bAllowEdit, long bSaveInTag) Description: Creates a new field Parameters:

• strFieldName: the internal name of the new field
• strDisplayName: the name displayed to the user
• bAllowEdit: can field be changed by user
• bSaveInTag: save the field in the tag in the content file

Return Value: the FieldAutomation interface for the new field

MJFieldAutomation - interface for working with an individual database field

Functions

string GetName(boolean bFormatted) Description: gets the name of the field Parameters:

• bFormatted: 0 = returns the unique name of the field as used in DB lookups, 1 = returns the display name of the field (not necessarily unique)

Return Value: the field name

MJZonesAutomation - interface for working with multi-zone playback system

Functions

number GetNumberZones() Description: gets the total number of playback zones Return Value: the number of playback zones

number GetActiveZone() Description: gets the index of the active zone Return Value: index of active zone

void SetActiveZone(number nIndex) Description: sets the index of the active zone.

• nIndex: the zero based index of the new zone

string GetZoneName(number nIndex) Description: gets the name of a given zone Parameters:

• nIndex: the zero based index of the new zone

Return Value: the name of the zone

MJZoneAutomation * GetZone(number nIndex) (requires MC 11.0.20 or later) Description: gets a MJZoneAutomation interface for this zone (see below) Return Value: MJZoneAutomationinterface

void SynchronizeZones(number nSource, number nDestination) Description: attempts to have the two zones play the same content at the same time Parameters:

• nSource: the master zone
• nDestination: the slave zone

MJZoneAutomation - interface for working with a single playback zone (requires MC 11.0.20 or later)

Functions

       string GetName()

           Description: gets the name of the zone
           Return Value: the name of the zone 

       MJPlaybackAutomation * GetPlayback()

           Description: gets a MJPlayback interface for this zone (see above)
           Return Value: MJPlayback interface 

       MJCurPlaylistAutomation * GetCurPlaylist()

           Description: gets a MJCurPlaylistAutomation interface for this zone (see above)
           Return Value: MJCurPlaylistAutomation interface 

       IMJMixerAutomation * GetMixer()

           Description: gets a MJMixerAutomation interface for this zone
           Return Value: the interface 

       IMJFileAutomation * GetPlayingFile()

           Description: get a MJFileAutomation interface for the file currently playing in this zone
           Return Value: the interface 

MJTaskAutomation - Interface for working with a task

Functions

       void Pump()

           Description: pumps the task's message loop

MJServicesAutomation - interface for working with services

Functions

       VARIANT_BOOL GetLicense(string bstrFilename)

           Description: Get a license for a content file
           Parameters:

               bstrFilename: the name of the content file 

           Return Value: true if the license was retrieved, false otherwise 

       IMJServiceAutomation *GetService(string bstrServiceName)

           Description: Get a service by name
           Parameters:

               bstrServiceName: the name of the service 

           Return Value: a MJServiceAutomation interface 

MJServiceAutomation - interface for working with a single service

Functions

       BOOL Process(string bstrCurrentURL, string bstrNewURL, string bstrPostData)

           Description: calls a service's Process function
           Parameters:

               bstrCurrentURL: the current URL for the service
               bstrNewURL: the URL to visit
               bstrPostData: empty or the name of a file containing POST data, the file will be deleted 

           Return Value: TRUE on success, FALSE otherwise 

       BOOL Execute(string bstrCommand, VARIANT vFileDisp, string *bstrResult)

           Description: calls a service's Execute function
           Parameters:

               bstrCommand: the command
               vFileDisp: MJFilesAutomation interface
               bstrResult: a pointer to the result 

           Return Value: TRUE on success, FALSE otherwise 

       LPDISPATCH GetWebBrowserHTMLDocument()

           Description: get the currently viewed service web page
           Return Value: an IDispatch pointer to an IHTMLDocument2 interface 

MJCDDVDAutomation - interface for working with CD/DVDs

Functions

       IMJFilesAutomation *GetFiles(string strPath)

           Description: Get the files on the device named
           Parameters:

               strPath: the name of the device 

           Return Value: MJFilesAutomation interface