public void Dispose()
{
if (_pointer == IntPtr.Zero) return;
LibVlcManager.ReleaseTrackDescriptionList(_pointer);
_pointer = IntPtr.Zero;
_list.Clear();
}
public void Dispose()
{
if (_pointer == IntPtr.Zero)
{
return;
}
LibVlcManager.ReleaseAudioOutputList(_pointer);
_pointer = IntPtr.Zero;
_list.Clear();
}
public MediaTrackInfo[] GetTrackInfo()
{
IntPtr pointer;
var count = _getTracksInfoFunction.Delegate(InstancePointer, out pointer);
var result = new MediaTrackInfo[count];
var temp = pointer;
for (var i = 0; i < count; i++)
{
result[i] = (MediaTrackInfo)Marshal.PtrToStructure(temp, typeof(MediaTrackInfo));
temp = (IntPtr)((int)temp + Marshal.SizeOf(typeof(MediaTrackInfo)));
}
LibVlcManager.Free(pointer);
return(result);
}
/// <summary>
/// Create a list of media track from a pointer of array.
/// </summary>
/// <param name="pointer">pointer of media track array</param>
/// <param name="count">count of media track array</param>
public MediaTrackList(IntPtr pointer, uint count)
{
_list = new List <MediaTrack>();
if (pointer == IntPtr.Zero)
{
return;
}
var tmp = pointer;
for (var i = 0; i < count; i++)
{
var p = Marshal.ReadIntPtr(tmp);
_list.Add(MediaTrack.CreateFromPointer(p));
tmp = (IntPtr)((Int64)tmp + IntPtr.Size);
}
LibVlcManager.ReleaseTracks(pointer, count);
}
/// <summary>
/// Convert a pointer of string to manmaged <see cref="String" />.
/// </summary>
/// <param name="ptr">pointer of string</param>
/// <param name="count">count of string, -1 mean auto check the end char</param>
/// <param name="toBeFree">free this pointer when convert over</param>
/// <param name="encoding">encoding of string</param>
/// <returns>result string</returns>
public static String PtrToString(IntPtr ptr, int count = -1, bool toBeFree = false, Encoding encoding = null)
{
if (ptr == IntPtr.Zero)
{
return(null);
}
if (encoding == null)
{
encoding = Encoding.UTF8;
}
List <byte> buffer = new List <byte>(1024);
if (count == -1)
{
int offset = 0;
byte tmp = Marshal.ReadByte(ptr, offset);
while (tmp != 0)
{
buffer.Add(tmp);
offset++;
tmp = Marshal.ReadByte(ptr, offset);
}
}
else
{
byte tmp = 0;
for (int i = 0; i < count; i++)
{
tmp = Marshal.ReadByte(ptr, i);
buffer.Add(tmp);
}
}
if (toBeFree)
{
LibVlcManager.Free(ptr);
}
return(encoding.GetString(buffer.ToArray()));
}