private IEnumerable <TrackDescription> GetDescription(IntPtr trackInfo)
{
if (trackInfo == IntPtr.Zero)
{
yield break;
}
libvlc_track_description_t trackDesc = (libvlc_track_description_t)Marshal.PtrToStructure(trackInfo, typeof(libvlc_track_description_t));
do
{
yield return(new TrackDescription()
{
Id = trackDesc.i_id,
Name = Marshal.PtrToStringAnsi(trackDesc.psz_name)
});
if (trackDesc.p_next != IntPtr.Zero)
{
trackDesc = (libvlc_track_description_t)Marshal.PtrToStructure(trackDesc.p_next, typeof(libvlc_track_description_t));
}
else
{
break;
}
}while (true);
LibVlcMethods.libvlc_track_description_release(trackInfo);
}
//==========================================================================
public libvlc_track_description_t libvlc_video_get_track_description(IntPtr p_mi)
{
VerifyAccess();
IntPtr pointer = m_libvlc_video_get_track_description(p_mi);
if (pointer == IntPtr.Zero)
{
return(null);
}
// I still have no clue whether the returned descriptions have to be freed
// in any way; but i assume not
internal_libvlc_track_description_t track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(pointer, typeof(internal_libvlc_track_description_t));
libvlc_track_description_t result = new libvlc_track_description_t {
i_id = track_description.i_id, psz_name = track_description.psz_name
};
libvlc_track_description_t current = result;
while (track_description.p_next != IntPtr.Zero)
{
track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(track_description.p_next, typeof(internal_libvlc_track_description_t));
current.p_next = new libvlc_track_description_t {
i_id = track_description.i_id, psz_name = track_description.psz_name
};
current = current.p_next;
}
current.p_next = null;
m_libvlc_track_description_list_release(pointer);
return(result);
}
//==========================================================================
public libvlc_track_description_t libvlc_video_get_spu_description(IntPtr p_mi)
{
VerifyAccess();
IntPtr pointer = m_libvlc_video_get_spu_description(p_mi);
if (pointer == IntPtr.Zero)
{
return(null);
}
internal_libvlc_track_description_t track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(pointer, typeof(internal_libvlc_track_description_t));
libvlc_track_description_t result = new libvlc_track_description_t {
i_id = track_description.i_id, psz_name = track_description.psz_name
};
libvlc_track_description_t current = result;
while (track_description.p_next != IntPtr.Zero)
{
track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(track_description.p_next, typeof(internal_libvlc_track_description_t));
current.p_next = new libvlc_track_description_t {
i_id = track_description.i_id, psz_name = track_description.psz_name
};
current = current.p_next;
}
current.p_next = null;
m_libvlc_track_description_list_release(pointer);
return(result);
}
/// <summary>
///
/// </summary>
protected void LoadTracks()
{
_Tracks.Clear();
lock (Player.player_lock)
{
bool done;
IntPtr p_head = GetTrackDescInternal();
Player.p_ex.CheckException();
IntPtr p_track = p_head;
do
{
libvlc_track_description_t track = (libvlc_track_description_t)Marshal.PtrToStructure(p_track, typeof(libvlc_track_description_t));
_Tracks.Add(track.i_id, new VlcTrack(track.i_id, Marshal.PtrToStringAnsi(track.psz_name)));
p_track = track.p_next;
done = (p_track == IntPtr.Zero);
} while (!done);
InteropMethods.libvlc_track_description_release(p_head);
}
_ReloadTracks = false;
}
//==========================================================================
public libvlc_track_description_t libvlc_video_get_track_description(IntPtr p_mi)
{
VerifyAccess();
IntPtr pointer = m_libvlc_video_get_track_description(p_mi);
if(pointer == IntPtr.Zero)
return null;
// I still have no clue whether the returned descriptions have to be freed
// in any way; but i assume not
internal_libvlc_track_description_t track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(pointer, typeof(internal_libvlc_track_description_t));
libvlc_track_description_t result = new libvlc_track_description_t { i_id = track_description.i_id, psz_name = track_description.psz_name };
libvlc_track_description_t current = result;
while(track_description.p_next != IntPtr.Zero)
{
track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(track_description.p_next, typeof(internal_libvlc_track_description_t));
current.p_next = new libvlc_track_description_t { i_id = track_description.i_id, psz_name = track_description.psz_name };
current = current.p_next;
}
current.p_next = null;
m_libvlc_track_description_list_release(pointer);
return result;
}
//==========================================================================
public libvlc_track_description_t libvlc_video_get_spu_description(IntPtr p_mi)
{
VerifyAccess();
IntPtr pointer = m_libvlc_video_get_spu_description(p_mi);
if(pointer == IntPtr.Zero)
return null;
internal_libvlc_track_description_t track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(pointer, typeof(internal_libvlc_track_description_t));
libvlc_track_description_t result = new libvlc_track_description_t { i_id = track_description.i_id, psz_name = track_description.psz_name };
libvlc_track_description_t current = result;
while(track_description.p_next != IntPtr.Zero)
{
track_description = (internal_libvlc_track_description_t)Marshal.PtrToStructure(track_description.p_next, typeof(internal_libvlc_track_description_t));
current.p_next = new libvlc_track_description_t { i_id = track_description.i_id, psz_name = track_description.psz_name };
current = current.p_next;
}
current.p_next = null;
m_libvlc_track_description_list_release(pointer);
return result;
}
//==========================================================================
public int libvlc_track_description_list_release(libvlc_track_description_t p_track_description)
{
return(0);
}
//==========================================================================
public int libvlc_track_description_list_release(libvlc_track_description_t p_track_description)
{
return 0;
}
