Per VUOTT, se vuoi puoi integrare la WIKI con questo cosice (ho attinto all'esempio del midi modificandolo ai miei scopi):
' Gambas class file
Private video As Pointer
Private posizione As Long
Private durata As Long
Private dur As Date
Private pos As Date
Private OldPos As Date 'alle volte il video dura un tot ma il cirsore (pos) non raggiunge mai la fine anche se la riproduzione e' finita ... quindi conto piu' volte se pos=old_pos
Private threshold As Integer 'e questo controllo lo posso fallire al massimo per 3 tentativi
Const numero_massimo As Integer = 5
Library "libgstreamer-1.0"
Private Enum GST_STATE_VOID_PENDING = 0, GST_STATE_NULL, GST_STATE_READY, GST_STATE_PAUSED, GST_STATE_PLAYING
Private Const GST_FORMAT_TIME As Integer = 3
Private stato As Integer = GST_STATE_PLAYING
' gst_init (int *argc, char **argv[])
' Initializes the GStreamer library, setting up internal path lists, registering built-in elements, and loading standard plugins.
Private Extern gst_init(argc As Pointer, argv As Pointer)
' GstElement * gst_parse_launch (const gchar *pipeline_description, GError **error)
' Create a new pipeline based on command line syntax.
Private Extern gst_parse_launch(description As String, GError As Pointer) As Pointer
' GstStateChangeReturn gst_element_set_state(GstElement *element, GstState state)
' Sets the state of the element.
Private Extern gst_element_set_state(gstelement As Pointer, state As Integer) As Integer
' gboolean gst_element_query_duration(GstElement *element, GstFormat format, gint64 *duration)
' Queries an element for the total stream duration in nanoseconds.
Private Extern gst_element_query_duration(gselement As Pointer, formatI As Integer, duration As Pointer) As Boolean
' gboolean gst_element_query_position (GstElement *element, GstFormat format, gint64 *cur)
' Queries an element for the stream position in nanoseconds.
Private Extern gst_element_query_position(gstelement As Pointer, gstformat As Pointer, cur As Pointer) As Boolean
' void gst_object_unref(gpointer object)
' Decrements the reference count on object.
Private Extern gst_object_unref(gobject As Pointer)
Public Sub ToggleButton1_Click()
Dim fileVideo As String
If ToggleButton1.Value = True Then
fileVideo = Media.URL("/home/v1p3r/Video/unboxing e recensione scarpe trekking cinesi/pubblicita ufficiale aliexpress - cunge.mp4")
ToggleButton1.Text = "STOP"
Print fileVideo
gst_init(0, 0)
video = gst_parse_launch("uridecodebin uri=" & filevideo & " name=decode decode. ! interlace field-pattern=1 ! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! autovideosink decode. ! audioconvert ! autoaudiosink", 0)
'video = gst_parse_launch("uridecodebin uri=" & fileVideo & " name=decode decode. ! interlace field-pattern=1 ! videoconvert ! video/x-raw,format=UYVY ! videoscale ! video/x-raw,width=720,height=576 ! videorate ! video/x-raw,framerate=25/1 ! decklinkvideosink mode=3 decode. ! audioconvert ! decklinkaudiosink", 0)
' Avviamo la riproduzione del file Midi:
gst_element_set_state(video, GST_STATE_PLAYING)
threshold = numero_massimo 'il limite delle volte che il cursore di posizione puo' rimanere fermo (dopo si da per scontato che il video e' terminato)
Timer1.Start
Else
ToggleButton1.Text = "PLAY"
gst_element_set_state(video, GST_STATE_NULL)
gst_object_unref(video)
Endif
End
Public Sub Button1_Click()
If ToggleButton1.Value = True Then
Timer1.Stop
ToggleButton1.Value = False
Endif
End
Public Sub Timer1_Timer()
If (posizione = 0) Or (durata > posizione) Then
gst_element_query_duration(video, GST_FORMAT_TIME, VarPtr(durata))
gst_element_query_position(video, GST_FORMAT_TIME, VarPtr(posizione))
Print "\rDurata: " & Date(0, 0, 0, 0, 0, 0, durata / 1000000) & " Pos. " & Date(0, 0, 0, 0, 0, 0, posizione / 1000000)
Else
Print "\rPlay Completato"
ToggleButton1.Value = False
Timer1.stop
Endif
'controllo se video terminato ma posizione non aggiornata
If (posizione > 0) And (Date(0, 0, 0, 0, 0, 0, posizione / 1000000) = OldPos) Then
If threshold = 0 Then
Print "\rPlay Completato"
ToggleButton1.Value = False
Timer1.stop
Else
threshold = threshold - 1
Endif
Else
OldPos = Date(0, 0, 0, 0, 0, 0, posizione / 1000000)
threshold = numero_massimo
Endif
End
PS: io esco su una scheda video particolare (intensity pro, ma va bene anche su decklink della black magic), commentando il "video = gst_parse_launch( ..." e levando il commento all'altro potrete usare un output standard.
