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TagList: Port custom code to 1.0

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This commit is contained in:
Stephan Sundermann 2013-10-21 12:49:17 +02:00
parent 6bb1013e27
commit 2099af9b09
1 changed files with 4 additions and 73 deletions
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77
sources/custom/TagList.cs
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@ -20,43 +20,16 @@ namespace Gst
public partial class TagList public partial class TagList
{ {
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
static extern int gst_structure_n_fields (IntPtr raw);
public int Size {
get {
int raw_ret = gst_structure_n_fields (Handle);
int ret = raw_ret;
return ret;
}
}
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
static extern bool gst_tag_list_copy_value (ref GLib.Value dest, IntPtr list, IntPtr tag);
public object this [string tag, uint index] { public object this [string tag, uint index] {
get { get { return GetValueIndex (tag, index).Val; }
IntPtr raw_string = GLib.Marshaller.StringToPtrGStrdup (tag);
IntPtr raw_ret = gst_tag_list_get_value_index (Handle, raw_string, index);
GLib.Marshaller.Free (raw_string);
if (raw_ret == IntPtr.Zero)
return null;
GLib.Value v = (GLib.Value)Marshal.PtrToStructure (raw_ret, typeof(GLib.Value));
return (object)v.Val;
}
} }
public object this [string tag] { public object this [string tag] {
get { get {
GLib.Value v = GLib.Value.Empty; GLib.Value v;
bool success; bool success;
IntPtr raw_string = GLib.Marshaller.StringToPtrGStrdup (tag); success = CopyValue (out v, this, tag);
success = gst_tag_list_copy_value (ref v, Handle, raw_string);
GLib.Marshaller.Free (raw_string);
if (!success) if (!success)
return null; return null;
@ -74,51 +47,9 @@ namespace Gst
throw new ArgumentException (String.Format ("Invalid tag name '{0}'", tag)); throw new ArgumentException (String.Format ("Invalid tag name '{0}'", tag));
GLib.Value v = new GLib.Value (value); GLib.Value v = new GLib.Value (value);
IntPtr raw_v = GLib.Marshaller.StructureToPtrAlloc (v);
IntPtr raw_string = GLib.Marshaller.StringToPtrGStrdup (tag); AddValue (mode, tag, v);
gst_tag_list_add_value (Handle, (int)mode, raw_string, raw_v);
Marshal.FreeHGlobal (raw_v);
v.Dispose (); v.Dispose ();
GLib.Marshaller.Free (raw_string);
}
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr gst_structure_nth_field_name (IntPtr raw, uint index);
private string NthFieldName (uint index)
{
IntPtr raw_ret = gst_structure_nth_field_name (Handle, index);
string ret = GLib.Marshaller.Utf8PtrToString (raw_ret);
return ret;
}
public string[] Tags {
get {
string[] tags = new string[Size];
for (uint i = 0; i < Size; i++)
tags [i] = NthFieldName (i);
return tags;
}
}
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
static extern IntPtr gst_structure_get_value (IntPtr raw, IntPtr fieldname);
public GLib.List GetTag (string tag)
{
IntPtr raw_string = GLib.Marshaller.StringToPtrGStrdup (tag);
IntPtr raw_ret = gst_structure_get_value (Handle, raw_string);
GLib.Marshaller.Free (raw_string);
GLib.Value ret = (GLib.Value)Marshal.PtrToStructure (raw_ret, typeof(GLib.Value));
object o = ret.Val;
if (o.GetType () == typeof(GLib.List))
return (GLib.List)o;
return new GLib.List (new object[] { o }, o.GetType(), true, true);
} }
} }
} }