The VideoLAN Forums

Posted: **17 Sep 2015 16:39**

I am trying to display the same decoded H.264 stream (on Windows) in two separate controls.

I took a look at the direct3d module. I would like to develop my own module that manages to separate HWND instances.

Can I develop my own module (without recompiling libvlc.dll/libvlccore.dll), provided that my dll is in the correct location, and has the correct exports?

For example, if I create a .dll with the following...

Code: Select all

#define D3D_HELP ("Renders two displays")
#define HW_BLENDING_TEXT ("Use hardware blending support")
#define HW_BLENDING_LONGTEXT ("Try to use hardware acceleration for subtitle/OSD blending.")

vlc_module_begin()
set_shortname("Dual Direct3D")
set_description("Dual Direct3D video output")
set_help(D3D_HELP)
set_category(CAT_VIDEO)
set_subcategory(SUBCAT_VIDEO_VOUT)

add_bool("direct3d-hw-blending", true, HW_BLENDING_TEXT, HW_BLENDING_LONGTEXT, true)

set_capability("vout display", 240)
add_shortcut("dualdirect3d")
set_callbacks(Open, Close)

vlc_module_end()

...is it enough to just include this .dll in the "VLC_PLUGIN_PATH"? One a windows install, this location is at "C:\Program Files (x86)\VideoLAN\VLC\plugins". Can I just add my .dll there, and use the "dualdirect3d vout"?

Or, is there a better way to display video in two separate HWND instances that I am unware of?

Posted: **17 Sep 2015 16:54**

You can add your own plugin.

Posted: **17 Sep 2015 17:25**

When you say, "plugin", you mean "module", right? They are the same thing?

I built a custom dll with the previous post's "vlc_module_begin". After adding it to the plugins directory, it did not show up under Tools > Plugins and extensions > Plugins.

I renamed my dll to have the same name of an existing plugin, in this case "video_output\libdirect3d_plugin.dll". After doing this, my plugin finally showed up (and Open/Close is called!). Why doesn't my plugin show up automatically when I name it "VLCRenderPlugin.dll", but it does when I rename it to be a name of an existing plugin?

Posted: **17 Sep 2015 17:31**

libfoo_plugin.dll

Posted: **17 Sep 2015 17:51**

Ah! Didn't realize the naming was important. Thanks!

The VideoLAN Forums

Dual rendering video on Windows.

Dual rendering video on Windows.

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Re: Dual rendering video on Windows.