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Gst.Value: Added support for GstFraction, GstFourcc, GstRange...
This commit is contained in:
Stephan Sundermann
parent
8f33590566
commit
e54c57a78a
1 changed files with 741 additions and 0 deletions
741
sources/custom/Value.cs
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741
sources/custom/Value.cs
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// Copyright (C) 2009 Sebastian Dröge <sebastian.droege@collabora.co.uk>
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// Copyright (C) 2013 Stephan Sundermann <stephansundermann@gmail.com>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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// Wrapper for GLib.Value to add support for GstFraction, GstFourcc, Gst*Range, ...
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using System;
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using System.Text;
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using System.Collections;
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using System.Runtime.InteropServices;
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using GLib;
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/* TODO: intersect, compare, substract, .... */
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namespace Gst
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{
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public struct Fraction
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{
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public int Numerator {
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get {
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return numerator;
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}
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set {
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numerator = value;
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Reduce ();
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}
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}
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public int Denominator {
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get {
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return denominator;
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}
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set {
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if (denominator == 0)
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throw new ArgumentException ();
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denominator = value;
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Reduce ();
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}
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}
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private int numerator;
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private int denominator;
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public static GLib.GType GType {
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get {
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return new GType (gst_fraction_get_type ());
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}
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}
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private void Reduce ()
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{
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int gcd = GreatestCommonDivisor (this);
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if (gcd != 0) {
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this.numerator /= gcd;
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this.denominator /= gcd;
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}
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}
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private static int GreatestCommonDivisor (Fraction fraction)
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{
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int a = fraction.numerator;
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int b = fraction.denominator;
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while (b != 0) {
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int temp = a;
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a = b;
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b = temp % b;
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}
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return Math.Abs (a);
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}
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public Fraction (int numerator, int denominator)
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{
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if (denominator == 0)
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throw new ArgumentException ();
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this.numerator = numerator;
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this.denominator = denominator;
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Reduce ();
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}
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public Fraction (GLib.Value val) : this ()
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{
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this.numerator = gst_value_get_fraction_numerator (ref val);
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this.denominator = gst_value_get_fraction_denominator (ref val);
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}
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public void SetGValue (ref GLib.Value val)
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{
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gst_value_set_fraction (ref val, Numerator, Denominator);
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}
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public override string ToString ()
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{
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return String.Format ("{0}/{1}", numerator, denominator);
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}
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public static explicit operator GLib.Value (Fraction fraction)
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{
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GLib.Value val = new GLib.Value (Fraction.GType);
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gst_value_set_fraction (ref val, fraction.Numerator, fraction.Denominator);
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return val;
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}
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public static explicit operator double (Fraction fraction)
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{
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return ((double)fraction.numerator) / ((double)fraction.denominator);
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}
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public static Fraction operator + (Fraction a, Fraction b)
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{
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return new Fraction ((a.Numerator * b.Denominator) + (b.Numerator * a.Denominator), a.Denominator * b.Denominator);
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}
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public static Fraction operator - (Fraction a, Fraction b)
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{
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return new Fraction ((a.Numerator * b.Denominator) - (b.Numerator * a.Denominator), a.Denominator * b.Denominator);
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}
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public static Fraction operator * (Fraction a, Fraction b)
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{
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return new Fraction (a.Numerator * b.Numerator, a.Denominator * b.Denominator);
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}
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public static Fraction operator / (Fraction a, Fraction b)
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{
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return new Fraction (a.Numerator * b.Denominator, a.Denominator * b.Numerator);
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}
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern void gst_value_set_fraction (ref GLib.Value v, int numerator, int denominator);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern int gst_value_get_fraction_numerator (ref GLib.Value v);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern int gst_value_get_fraction_denominator (ref GLib.Value v);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_fraction_get_type ();
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}
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public struct DoubleRange
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{
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public double Min;
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public double Max;
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public static GLib.GType GType {
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get {
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return new GType (gst_double_range_get_type ());
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}
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}
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public DoubleRange (double min, double max)
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{
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if (min > max)
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throw new ArgumentException ();
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this.Min = min;
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this.Max = max;
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}
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public DoubleRange (GLib.Value val) : this ()
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{
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this.Min = gst_value_get_double_range_min (ref val);
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this.Max = gst_value_get_double_range_max (ref val);
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}
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public override string ToString ()
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{
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return String.Format ("[{0}, {1}]", Min, Max);
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}
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public void SetGValue (ref GLib.Value val)
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{
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gst_value_set_double_range (ref val, Min, Max);
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}
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public static explicit operator GLib.Value (DoubleRange range)
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{
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GLib.Value val = new GLib.Value (DoubleRange.GType);
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gst_value_set_double_range (ref val, range.Min, range.Max);
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return val;
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}
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_double_range_get_type ();
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern void gst_value_set_double_range (ref GLib.Value v, double min, double max);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern double gst_value_get_double_range_min (ref GLib.Value v);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern double gst_value_get_double_range_max (ref GLib.Value v);
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}
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public struct IntRange
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{
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public int Min;
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public int Max;
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public static GLib.GType GType {
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get {
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return new GType (gst_int_range_get_type ());
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}
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}
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public IntRange (int min, int max)
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{
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if (min > max)
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throw new ArgumentException ();
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this.Min = min;
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this.Max = max;
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}
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public IntRange (GLib.Value val) : this ()
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{
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this.Min = gst_value_get_int_range_min (ref val);
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this.Max = gst_value_get_int_range_max (ref val);
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}
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public void SetGValue (ref GLib.Value val)
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{
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gst_value_set_int_range (ref val, Min, Max);
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}
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public override string ToString ()
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{
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return String.Format ("[{0}, {1}]", Min, Max);
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}
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public static explicit operator GLib.Value (IntRange range)
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{
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GLib.Value val = new GLib.Value (IntRange.GType);
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gst_value_set_int_range (ref val, range.Min, range.Max);
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return val;
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}
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_int_range_get_type ();
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern void gst_value_set_int_range (ref GLib.Value v, int min, int max);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern int gst_value_get_int_range_min (ref GLib.Value v);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern int gst_value_get_int_range_max (ref GLib.Value v);
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}
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public struct FractionRange
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{
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public Fraction Min;
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public Fraction Max;
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public static GLib.GType GType {
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get {
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return new GType (gst_fraction_range_get_type ());
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}
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}
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public FractionRange (Fraction min, Fraction max)
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{
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double a = (double)min, b = (double)max;
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if (a > b)
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throw new ArgumentException ();
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this.Min = min;
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this.Max = max;
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}
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public FractionRange (GLib.Value val) : this ()
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{
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IntPtr min_ptr, max_ptr;
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GLib.Value min, max;
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min_ptr = gst_value_get_fraction_range_min (ref val);
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max_ptr = gst_value_get_fraction_range_max (ref val);
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min = (GLib.Value)Marshal.PtrToStructure (min_ptr, typeof(GLib.Value));
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max = (GLib.Value)Marshal.PtrToStructure (max_ptr, typeof(GLib.Value));
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this.Min = (Fraction)min.Val;
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this.Max = (Fraction)max.Val;
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}
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public void SetGValue (ref GLib.Value val)
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{
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GLib.Value min = new GLib.Value (Min);
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GLib.Value max = new GLib.Value (Max);
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gst_value_set_fraction_range (ref val, ref min, ref max);
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min.Dispose ();
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max.Dispose ();
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}
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public override string ToString ()
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{
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return String.Format ("[{0}, {1}]", Min, Max);
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}
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public static explicit operator GLib.Value (FractionRange range)
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{
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GLib.Value val = new GLib.Value (FractionRange.GType);
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GLib.Value min = new GLib.Value (range.Min);
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GLib.Value max = new GLib.Value (range.Max);
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gst_value_set_fraction_range (ref val, ref min, ref max);
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min.Dispose ();
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max.Dispose ();
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return val;
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}
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_fraction_range_get_type ();
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern void gst_value_set_fraction_range (ref GLib.Value v, ref GLib.Value min, ref GLib.Value max);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_value_get_fraction_range_min (ref GLib.Value v);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_value_get_fraction_range_max (ref GLib.Value v);
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}
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public struct Fourcc
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{
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public uint Val;
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public static GLib.GType GType {
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get {
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return new GType (gst_fourcc_get_type ());
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}
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}
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public Fourcc (uint fourcc)
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{
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this.Val = fourcc;
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}
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public Fourcc (char[] fourcc)
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{
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if (fourcc.Length != 4)
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throw new ArgumentException ();
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this.Val = (uint)((((byte)fourcc [0]) << 24) |
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(((byte)fourcc [1]) << 16) |
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(((byte)fourcc [2]) << 8) |
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(((byte)fourcc [3]) << 0));
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}
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public Fourcc (string fourcc)
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{
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if (fourcc.Length != 4)
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throw new ArgumentException ();
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this.Val = (uint)((((byte)fourcc [0]) << 24) |
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(((byte)fourcc [1]) << 16) |
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(((byte)fourcc [2]) << 8) |
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(((byte)fourcc [3]) << 0));
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}
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public Fourcc (GLib.Value val) : this (gst_value_get_fourcc (ref val))
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{
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}
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public void SetGValue (ref GLib.Value val)
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{
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gst_value_set_fourcc (ref val, Val);
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}
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public override string ToString ()
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{
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return String.Format ("{0}{1}{2}{3}", (char)((Val >> 24) & 0xff),
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(char)((Val >> 16) & 0xff),
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(char)((Val >> 8) & 0xff),
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(char)((Val >> 0) & 0xff));
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}
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public static explicit operator GLib.Value (Fourcc fourcc)
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{
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GLib.Value val = new GLib.Value (Fourcc.GType);
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gst_value_set_fourcc (ref val, fourcc.Val);
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return val;
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}
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public static explicit operator char[] (Fourcc fourcc)
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{
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return new char[] { (char) ( (fourcc.Val >> 24) & 0xff),
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(char) ( (fourcc.Val >> 16) & 0xff),
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(char) ( (fourcc.Val >> 8) & 0xff),
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(char) ( (fourcc.Val >> 0) & 0xff)
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};
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}
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public static explicit operator string (Fourcc fourcc)
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{
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return fourcc.ToString ();
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}
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern IntPtr gst_fourcc_get_type ();
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern void gst_value_set_fourcc (ref GLib.Value v, uint fourcc);
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[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
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private static extern uint gst_value_get_fourcc (ref GLib.Value v);
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}
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public class Date : IWrapper
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{
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public DateTime Val;
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private IntPtr handle;
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public IntPtr Handle {
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get {
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return handle;
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}
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}
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public static GLib.GType GType {
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get {
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return new GType (gst_date_get_type ());
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}
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}
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~Date ()
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{
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g_date_free (handle);
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}
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public Date (DateTime date)
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{
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this.Val = date;
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handle = g_date_new_dmy ((byte)Val.Day, (int)Val.Month, (ushort)Val.Year);
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}
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public Date (int day, int month, int year)
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{
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this.Val = new DateTime (year, month, day);
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handle = g_date_new_dmy ((byte)Val.Day, (int)Val.Month, (ushort)Val.Year);
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}
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public Date (GLib.Value val)
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{
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IntPtr date = gst_value_get_date (ref val);
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this.Val = new DateTime (g_date_get_year (date), g_date_get_month (date), g_date_get_day (date));
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handle = g_date_new_dmy ((byte)Val.Day, (int)Val.Month, (ushort)Val.Year);
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}
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public static Date New (IntPtr date)
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{
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return new Date (g_date_get_day (date), g_date_get_month (date), g_date_get_year (date));
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}
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||||
public void SetGValue (ref GLib.Value val)
|
||||
{
|
||||
IntPtr date_ptr = g_date_new_dmy ((byte)Val.Day, (int)Val.Month, (ushort)Val.Year);
|
||||
|
||||
gst_value_set_date (ref val, date_ptr);
|
||||
|
||||
GLib.Marshaller.Free (date_ptr);
|
||||
}
|
||||
|
||||
public override string ToString ()
|
||||
{
|
||||
return String.Format ("{0}-{1}-{2}", Val.Year, Val.Month, Val.Day);
|
||||
}
|
||||
|
||||
public static explicit operator GLib.Value (Date date)
|
||||
{
|
||||
GLib.Value val = new GLib.Value (Date.GType);
|
||||
|
||||
date.SetGValue (ref val);
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
[DllImport ("libglib-2.0-0.dll") ]
|
||||
private static extern byte g_date_get_day (IntPtr date);
|
||||
|
||||
[DllImport ("libglib-2.0-0.dll") ]
|
||||
private static extern int g_date_get_month (IntPtr date);
|
||||
|
||||
[DllImport ("libglib-2.0-0.dll") ]
|
||||
private static extern ushort g_date_get_year (IntPtr date);
|
||||
|
||||
[DllImport ("libglib-2.0-0.dll") ]
|
||||
private static extern IntPtr g_date_new_dmy (byte day, int month, ushort year);
|
||||
|
||||
[DllImport ("libglib-2.0-0.dll") ]
|
||||
private static extern void g_date_free (IntPtr date);
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern IntPtr gst_date_get_type ();
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern IntPtr gst_value_get_date (ref GLib.Value val);
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern void gst_value_set_date (ref GLib.Value val, IntPtr date);
|
||||
}
|
||||
|
||||
public struct List : IEnumerable
|
||||
{
|
||||
private IList content;
|
||||
|
||||
public static GLib.GType GType {
|
||||
get {
|
||||
return new GType (gst_value_list_get_type ());
|
||||
}
|
||||
}
|
||||
|
||||
public List (IList content)
|
||||
{
|
||||
this.content = content;
|
||||
}
|
||||
|
||||
public List (GLib.Value val)
|
||||
{
|
||||
this.content = new ArrayList ();
|
||||
|
||||
uint n = gst_value_list_get_size (ref val);
|
||||
for (uint i = 0; i < n; i++) {
|
||||
IntPtr v_ptr = gst_value_list_get_value (ref val, i);
|
||||
GLib.Value v = (GLib.Value)Marshal.PtrToStructure (v_ptr, typeof(GLib.Value));
|
||||
this.content.Add (v.Val);
|
||||
}
|
||||
}
|
||||
|
||||
public void SetGValue (ref GLib.Value val)
|
||||
{
|
||||
foreach (object o in content) {
|
||||
GLib.Value v = new GLib.Value (o);
|
||||
gst_value_list_append_value (ref val, ref v);
|
||||
v.Dispose ();
|
||||
}
|
||||
}
|
||||
|
||||
public override string ToString ()
|
||||
{
|
||||
StringBuilder sb = new StringBuilder ();
|
||||
|
||||
sb.Append ("< ");
|
||||
for (int i = 0; i < content.Count; i++) {
|
||||
sb.Append (content [i]);
|
||||
if (i < content.Count - 1)
|
||||
sb.Append (", ");
|
||||
}
|
||||
sb.Append (" >");
|
||||
|
||||
return sb.ToString ();
|
||||
}
|
||||
|
||||
public static explicit operator GLib.Value (List l)
|
||||
{
|
||||
GLib.Value val = new GLib.Value (List.GType);
|
||||
|
||||
foreach (object o in l.content) {
|
||||
GLib.Value v = new GLib.Value (o);
|
||||
gst_value_list_append_value (ref val, ref v);
|
||||
v.Dispose ();
|
||||
}
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
public IEnumerator GetEnumerator ()
|
||||
{
|
||||
return content.GetEnumerator ();
|
||||
}
|
||||
|
||||
public object this [int index] {
|
||||
set {
|
||||
content [index] = value;
|
||||
}
|
||||
get {
|
||||
return content [index];
|
||||
}
|
||||
}
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern IntPtr gst_value_list_get_type ();
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern uint gst_value_list_get_size (ref GLib.Value val);
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern IntPtr gst_value_list_get_value (ref GLib.Value val, uint index);
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern void gst_value_list_append_value (ref GLib.Value val, ref GLib.Value el);
|
||||
}
|
||||
|
||||
public struct Array : IEnumerable
|
||||
{
|
||||
private IList content;
|
||||
|
||||
public static GLib.GType GType {
|
||||
get {
|
||||
return new GType (gst_value_array_get_type ());
|
||||
}
|
||||
}
|
||||
|
||||
public Array (IList content)
|
||||
{
|
||||
this.content = content;
|
||||
}
|
||||
|
||||
public Array (GLib.Value val)
|
||||
{
|
||||
this.content = new ArrayList ();
|
||||
|
||||
uint n = gst_value_array_get_size (ref val);
|
||||
for (uint i = 0; i < n; i++) {
|
||||
IntPtr v_ptr = gst_value_array_get_value (ref val, i);
|
||||
GLib.Value v = (GLib.Value)Marshal.PtrToStructure (v_ptr, typeof(GLib.Value));
|
||||
this.content.Add (v.Val);
|
||||
}
|
||||
}
|
||||
|
||||
public void SetGValue (ref GLib.Value val)
|
||||
{
|
||||
foreach (object o in content) {
|
||||
GLib.Value v = new GLib.Value (o);
|
||||
gst_value_array_append_value (ref val, ref v);
|
||||
v.Dispose ();
|
||||
}
|
||||
}
|
||||
|
||||
public static explicit operator GLib.Value (Array a)
|
||||
{
|
||||
GLib.Value val = new GLib.Value (Gst.Array.GType);
|
||||
|
||||
foreach (object o in a.content) {
|
||||
GLib.Value v = new GLib.Value (o);
|
||||
gst_value_array_append_value (ref val, ref v);
|
||||
v.Dispose ();
|
||||
}
|
||||
|
||||
return val;
|
||||
}
|
||||
|
||||
public override string ToString ()
|
||||
{
|
||||
StringBuilder sb = new StringBuilder ();
|
||||
|
||||
sb.Append ("{ ");
|
||||
for (int i = 0; i < content.Count; i++) {
|
||||
sb.Append (content [i]);
|
||||
if (i < content.Count - 1)
|
||||
sb.Append (", ");
|
||||
}
|
||||
sb.Append (" }");
|
||||
|
||||
return sb.ToString ();
|
||||
}
|
||||
|
||||
public IEnumerator GetEnumerator ()
|
||||
{
|
||||
return content.GetEnumerator ();
|
||||
}
|
||||
|
||||
public object this [int index] {
|
||||
set {
|
||||
content [index] = value;
|
||||
}
|
||||
get {
|
||||
return content [index];
|
||||
}
|
||||
}
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern IntPtr gst_value_array_get_type ();
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern uint gst_value_array_get_size (ref GLib.Value val);
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern IntPtr gst_value_array_get_value (ref GLib.Value val, uint index);
|
||||
|
||||
[DllImport("libgstreamer-1.0-0.dll", CallingConvention = CallingConvention.Cdecl)]
|
||||
|
||||
private static extern void gst_value_array_append_value (ref GLib.Value val, ref GLib.Value el);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in a new issue