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display_screen_media.go
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/
display_screen_media.go
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package main
/*
* Display computer screen as player media.
* libVLC screen module must be installed.
* See https://github.com/adrg/libvlc-go/wiki for installation instructions.
* See https://wiki.videolan.org/Documentation:Modules/screen.
*/
import (
"log"
vlc "github.com/adrg/libvlc-go/v3"
)
func main() {
// Initialize libVLC. Additional command line arguments can be passed in
// to libVLC by specifying them in the Init function.
if err := vlc.Init("--quiet"); err != nil {
log.Fatal(err)
}
defer vlc.Release()
// Create a new player.
player, err := vlc.NewPlayer()
if err != nil {
log.Fatal(err)
}
defer func() {
player.Stop()
player.Release()
}()
// Create new media instance from screen.
screenOpts := &vlc.MediaScreenOptions{
// Captured area left edge. Default: 0.
X: 100,
// Captured area top edge. Default: 0.
Y: 100,
// Captured area width. Default: 0 (full screen width).
Width: 200,
// Captured area height. Default: 0 (full screen height).
Height: 200, // 0 for full screen height.
// Frame rate. Default: 0.
FPS: 30.0,
// Captured area follows the mouse cursor. Default: false.
FollowMouse: true,
}
media, err := vlc.NewMediaFromScreen(screenOpts)
if err != nil {
log.Fatal(err)
}
defer media.Release()
// Set player media.
if err := player.SetMedia(media); err != nil {
log.Fatal(err)
}
// Retrieve player event manager.
manager, err := player.EventManager()
if err != nil {
log.Fatal(err)
}
// Register the media end reached event with the event manager.
quit := make(chan struct{})
eventCallback := func(event vlc.Event, userData interface{}) {
close(quit)
}
eventID, err := manager.Attach(vlc.MediaPlayerEndReached, eventCallback, nil)
if err != nil {
log.Fatal(err)
}
defer manager.Detach(eventID)
// Start playing the media.
if err = player.Play(); err != nil {
log.Fatal(err)
}
<-quit
}