// ParamSpec.cs - GParamSpec class wrapper implementation // // Authors: Mike Kestner // // Copyright (c) 2008 Novell, Inc. // // This program is free software; you can redistribute it and/or // modify it under the terms of version 2 of the Lesser GNU General // Public License as published by the Free Software Foundation. // // This program is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public // License along with this program; if not, write to the // Free Software Foundation, Inc., 59 Temple Place - Suite 330, // Boston, MA 02111-1307, USA. namespace Gst.GLib { using System; using System.Runtime.InteropServices; internal enum ParamFlags { None = 0, Readable = 1 << 0, Writable = 1 << 1, Construct = 1 << 2, ConstructOnly = 1 << 3, } public class ParamSpec { IntPtr handle; public ParamSpec (string name, string nick, string blurb, GType type, bool readable, bool writable) : this (name, nick, blurb, type, (readable ? ParamFlags.Readable : ParamFlags.None) | (writable ? ParamFlags.Writable : ParamFlags.None)) {} internal ParamSpec (string name, string nick, string blurb, GType type, ParamFlags pflags) { int flags = (int) pflags; IntPtr p_name = Gst.GLib.Marshaller.StringToPtrGStrdup (name); IntPtr p_nick = Gst.GLib.Marshaller.StringToPtrGStrdup (nick); IntPtr p_blurb = Gst.GLib.Marshaller.StringToPtrGStrdup (blurb); if (type == GType.Char) handle = g_param_spec_char (p_name, p_nick, p_blurb, SByte.MinValue, SByte.MaxValue, 0, flags); else if (type == GType.UChar) handle = g_param_spec_uchar (p_name, p_nick, p_blurb, Byte.MinValue, Byte.MaxValue, 0, flags); else if (type == GType.Boolean) handle = g_param_spec_boolean (p_name, p_nick, p_blurb, false, flags); else if (type == GType.Int) handle = g_param_spec_int (p_name, p_nick, p_blurb, Int32.MinValue, Int32.MaxValue, 0, flags); else if (type == GType.UInt) handle = g_param_spec_uint (p_name, p_nick, p_blurb, 0, UInt32.MaxValue, 0, flags); else if (type == GType.Long) handle = g_param_spec_long (p_name, p_nick, p_blurb, IntPtr.Zero, IntPtr.Size == 4 ? new IntPtr (Int32.MaxValue) : new IntPtr (Int64.MaxValue), IntPtr.Zero, flags); else if (type == GType.ULong) handle = g_param_spec_ulong (p_name, p_nick, p_blurb, UIntPtr.Zero, UIntPtr.Size == 4 ? new UIntPtr (UInt32.MaxValue) : new UIntPtr (UInt64.MaxValue), UIntPtr.Zero, flags); else if (type == GType.Int64) handle = g_param_spec_int64 (p_name, p_nick, p_blurb, Int64.MinValue, Int64.MaxValue, 0, flags); else if (type == GType.UInt64) handle = g_param_spec_uint64 (p_name, p_nick, p_blurb, 0, UInt64.MaxValue, 0, flags); /* else if (type == GType.Enum) else if (type == GType.Flags) * TODO: * Both g_param_spec_enum and g_param_spec_flags expect default property values and the members of the enum seemingly cannot be enumerated */ else if (type == GType.Float) handle = g_param_spec_float (p_name, p_nick, p_blurb, Single.MinValue, Single.MaxValue, 0.0f, flags); else if (type == GType.Double) handle = g_param_spec_double (p_name, p_nick, p_blurb, Double.MinValue, Double.MaxValue, 0.0, flags); else if (type == GType.String) handle = g_param_spec_string (p_name, p_nick, p_blurb, IntPtr.Zero, flags); else if (type == GType.Pointer) handle = g_param_spec_pointer (p_name, p_nick, p_blurb, flags); else if (type.Val == g_gtype_get_type ()) handle = g_param_spec_gtype (p_name, p_nick, p_blurb, GType.None.Val, flags); else if (g_type_is_a (type.Val, GType.Boxed.Val)) handle = g_param_spec_boxed (p_name, p_nick, p_blurb, type.Val, flags); else if (g_type_is_a (type.Val, GType.Object.Val)) handle = g_param_spec_object (p_name, p_nick, p_blurb, type.Val, flags); else throw new ArgumentException ("type"); Gst.GLib.Marshaller.Free (p_name); Gst.GLib.Marshaller.Free (p_nick); Gst.GLib.Marshaller.Free (p_blurb); } public ParamSpec (IntPtr native) { handle = native; } public IntPtr Handle { get { return handle; } } public GType ValueType { get { GParamSpec spec = (GParamSpec) Marshal.PtrToStructure (Handle, typeof (GParamSpec)); return new GType (spec.value_type); } } struct GTypeInstance { IntPtr g_class; } struct GParamSpec { GTypeInstance g_type_instance; IntPtr name; ParamFlags flags; public IntPtr value_type; IntPtr owner_type; IntPtr _nick; IntPtr _blurb; IntPtr qdata; uint ref_count; uint param_id; } [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_char (IntPtr name, IntPtr nick, IntPtr blurb, sbyte min, sbyte max, sbyte dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_uchar (IntPtr name, IntPtr nick, IntPtr blurb, byte min, byte max, byte dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_boolean (IntPtr name, IntPtr nick, IntPtr blurb, bool dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_int (IntPtr name, IntPtr nick, IntPtr blurb, int min, int max, int dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_uint (IntPtr name, IntPtr nick, IntPtr blurb, uint min, uint max, uint dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_long (IntPtr name, IntPtr nick, IntPtr blurb, IntPtr min, IntPtr max, IntPtr dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_ulong (IntPtr name, IntPtr nick, IntPtr blurb, UIntPtr min, UIntPtr max, UIntPtr dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_int64 (IntPtr name, IntPtr nick, IntPtr blurb, long min, long max, long dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_uint64 (IntPtr name, IntPtr nick, IntPtr blurb, ulong min, ulong max, ulong dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_float (IntPtr name, IntPtr nick, IntPtr blurb, float min, float max, float dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_double (IntPtr name, IntPtr nick, IntPtr blurb, double min, double max, double dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_string (IntPtr name, IntPtr nick, IntPtr blurb, IntPtr dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_pointer (IntPtr name, IntPtr nick, IntPtr blurb, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_gtype (IntPtr name, IntPtr nick, IntPtr blurb, IntPtr dval, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_boxed (IntPtr name, IntPtr nick, IntPtr blurb, IntPtr return_type, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_param_spec_object (IntPtr name, IntPtr nick, IntPtr blurb, IntPtr return_type, int flags); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern IntPtr g_gtype_get_type (); [DllImport ("libgobject-2.0-0.dll", CallingConvention = CallingConvention.Cdecl)] static extern bool g_type_is_a (IntPtr a, IntPtr b); } }