1 == ACTIVEX Control for VLC ==
3 The VLC ActiveX Control has been primary designed to work with Internet
4 Explorer. However it may also work with Visual Basic and/or .NET. Please
5 note, that this code does not rely upon Microsoft MFC/ATL code, hence
6 good compatibility is not guaranteed.
10 The ActiveX Control should compile without any glitches as long as you
11 have the latest version of mingw gcc and headers.
13 In order to script the ActiveX Control on Internet Explorer, a type
14 library is required. This type library is usually generated from an IDL
15 file using Microsoft MIDL compiler. Therefore, for convenience I have
16 checked in the output of the MIDL compiler in the repository so that you
17 will only need the MIDL compiler if you change axvlc.idl. the generated
24 To use the MIDL compiler on cygwin, you will need to set some
25 environment variables before configuring vlc. If you have a copy of
26 'Microsoft Visual C++ 6.0' installed, the following settings are
29 export PATH=$PATH:"/cygdrive/c/Program Files/Microsoft Visual Studio/COMMON/MSDev98/Bin":"/cygdrive/c/Program Files/Microsoft Visual Studio/VC98/Bin"
30 export INCLUDE='C:\Program Files\Microsoft Visual Studio\VC98\Include'
33 If you are cross-compiling on Linux, you can use 'widl' which is part of
34 the WINE project (http://www.winehq.com). At leat wine-dev-0.9.57 works,
35 the comand line to compile IDL should looks like the following :
37 widl -I/usr/include/wine/windows/ \
38 -h -H axvlc_idl.h -t -T axvlc.tlb -u -U axvlc_idl.c axvlc.idl
40 NOTE: widl breaks compatibility with Visual Basic. If that is important
41 to you then you must use midl.
45 The ActiveX control is compiled with verbose output by default, but you
46 will need to launch Internet Explorer from a Cygwin shell to see the
47 output. Alternatively, the plugin will also use the VLC preferences, so
48 if you enable the file logging interface through the player and save the
49 preferences, the control will automatically log its verbose output into
52 Debugging the ActiveX control DLL with GNU GDB can be difficult.
53 Fortunately the ActiveX control can also be compiled as an executable
54 rather than a DLL. In ActiveX terms, this is called a local server. The
55 advantage of a local server is that it will never crash its client,
56 i.e. Internet Explorer, even if the local server crashes. The build
57 system does not currently allow to create an executable version of the
58 ActiveX control, you will need to manually define the BUILD_LOCALSERVER
59 pre-processor variable and modify the Makefile to exclude the '-shared'
60 option at the linking stage. Once this is done, launch axvlc.exe to have
61 a working Activex control. Please note, that executable version of the
62 ActiveX control will override any settings required for the DLL version,
63 which will no longer work until you (re)register it as shown in the
68 The VLC NSIS installer will install the ActiveX Control without
69 requiring any further manual intervention, but for people who like to
70 live on the edge, here are the steps you need to perform once you have
71 built the ActiveX Control.
73 The ActiveX control DLL file may be copied anywhere on the target
74 machine, but before you can use the control, you will need to register
75 it with Windows by using the REGSVR32 command, as per following example:
77 REGSVR32 C:\WINDOWS\AXVLC.DLL
79 If the control needs to use external VLC plugins (i.e other than the
80 built-in ones), make sure that the plugin path is set in the registry as
81 per following example:
83 [HKEY_LOCAL_MACHINE\Software\VideoLAN\VLC]
84 InstallDir="C:\Program Files\VideoLAN\VLC"
86 The InstallDir must be the parent directory of the 'plugins' directory.
88 WARNING: Both control and plugins must come from the same source build
89 tree. Otherwise, at best, the control will not play any content,
90 at worse it may crash Internet Explorer while attempting to load
95 The activex control may be installed from a remote through Internet
96 Installer if it is packaged up in a CAB file. The following link
97 explains how to achieve this
99 http://msdn.microsoft.com/workshop/components/activex/packaging.asp
101 For convenience, I have provided a sample axvlc.INF file, which assumes
102 that the VLC NSIS Installer has been packaged up a CAB file called
105 The ActiveX Control DLL file can also be distributed by itself if it has
106 been compiled with built-in VLC plugins; check developer information for
107 more information on built-in plugins.
109 V. Controlling the plugin
113 The following public properties can be used to control the plugin
114 from HTML, the property panel of Visual Basic and most ActiveX aware
117 +==========+=========+===================================+===============+
118 | Name: | Type: | Description: | Alias: |
119 +==========+=========+===================================+===============+
120 | autoplay | boolean | play when control is activated | autostart |
121 +----------+---------+-----------------------------------+---------------+
122 | autoloop | boolean | loop the playlist | loop |
123 +----------+---------+-----------------------------------+---------------+
124 | mrl | string | initial MRL in playlist | src, filename |
125 +----------+---------+-----------------------------------+---------------+
126 | mute | boolean | mute audio volume | |
127 +----------+---------+-----------------------------------+---------------+
128 | visible | boolean | show/hide control viewport | showdisplay |
129 +----------+---------+-----------------------------------+---------------+
130 | volume | integer | set/get audio volume | |
131 +----------+---------+-----------------------------------+---------------+
132 | toolbar | boolean | set/get visibility of the toolbar | |
133 +----------+---------+-----------------------------------+---------------+
135 The alias column shows an alternative <PARAM name> for the property in
136 internet explorer, which is useful to maintain compatibility with HTML
137 pages already leveraging Windows Media Player
141 The MRL, Autoplay and Autoloop properties are only used to configure the
142 initial state of the ActiveX control,i.e before its activation; they are
143 ignored afterward. Therefore, if some runtime control is required, the
144 following APIs should be used within your programming environment:
148 +==========+=========+=========+=======================================+
149 | Name: | Type: | Access: | Description: |
150 +==========+=========+=========+=======================================+
151 | Playing | boolean | RO | Returns whether some MRL is playing |
152 +----------+---------+---------+---------------------------------------+
153 | Time | integer | RW | Time elapsed in seconds playing |
154 | | | | current MRL |
155 | | | | NOTE: live feeds returns 0 |
156 +----------+---------+---------+---------------------------------------+
157 | Position | real | RW | Playback position within current MRL |
158 | | | | in a scale from 0.0 to 1.0 |
159 | | | | NOTE: live feeds returns 0.0 |
160 +----------+---------+---------+---------------------------------------+
161 | Length | integer | RO | Total length in seconds of current MRL|
162 | | | | NOTE: live feeds returns 0 |
163 +----------+---------+---------+---------------------------------------+
164 | Volume | integer | RW | Current volume from 0 to 100 |
165 +----------+---------+---------+---------------------------------------+
166 | Visible | boolean | RW | Indicates whether control is visible |
167 +----------+---------+---------+---------------------------------------+
171 *** current interface (0.8.6+) ***
172 UUID : 9BE31822-FDAD-461B-AD51-BE1D1C159921
173 defined in axvlc.idl as "coclass VLCPlugin2", "interface IVLCControl2"
175 This interface organizes an API with several objects (like .audio.mute).
176 It is currently documented on videolan wiki (the url may change) at
177 http://wiki.videolan.org/Documentation:Play_HowTo/Advanced_Use_of_VLC
180 *** old interface (deprecated) ***
181 UUID : E23FE9C6-778E-49D4-B537-38FCDE4887D8
182 defined in axvlc.idl as "coclass VLCPlugin", "interface IVLCControl"
185 Play current item the playlist
188 Pause current item in the playlist
191 Stop playing current item in playlist
193 shuttle(Seconds as integer)
194 Advance/backtrack playback by specified amount (which is negative for
195 backtracking). This is also called relative seeking.
196 This method does not work for live streams.
199 Switch between normal and full screen video
202 Increase play back speed by 2X, 4X, 8X
205 Decrease play back speed by 2X, 4X, 8X
208 mute/unmute sound output
210 addTarget(MRL As String, Options as array of strings,
211 Mode as enumeration, Position as integer)
212 Add an MRL into the default playlist, you can also specify a list
213 of playlist options to attach to this MRL or Null for no options.
214 Mode indicates the action taken by the playlist on MRL and is one
217 VLCPlayListInsert = 1 (Insert MRL into playlist at Position)
218 VLCPlayListInsertAndGo = 9 (Insert MRL into playlist at Position and play it immediately)
219 VLCPlayListReplace = 2 (Replace MRL in playlist at Position)
220 VLCPlayListReplaceAndGo = 10 (Replace MRL in playlist at Position and play it immediately)
221 VLCPlayListAppend = 4 (Append MRL in playlist after Position)
222 VLCPlayListAppendAndGo = 12 (Append MRL in playlist after Position and play it immediately)
223 VLCPlayListCheckInsert = 16 (Verify if MRL is in playlist)
225 Position can take the value of -666 as wildcard for the last element
229 setVariable(Name as string, Value as object);
230 Set a value into a VLC variables
232 getVariable(Name as string) as object
233 Retrieve the value of a VLC variable.
236 Damien Fouilleul <Damien dot Fouilleul at laposte dot net>