110 lines
No EOL
1.9 KiB
C#
110 lines
No EOL
1.9 KiB
C#
using System;
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using System.Runtime.InteropServices;
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namespace DMX2
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{
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public static partial class AlsaSeqLib
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{
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class SeqHandleWrapper : IDisposable
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{
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IntPtr _seq = IntPtr.Zero;
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public IntPtr Handle {
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get {
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return _seq;
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}
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}
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public SeqHandleWrapper ()
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{
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Invoke.snd_seq_open (out _seq, "default", SND_SEQ_OPEN_DUPLEX, 0);
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Invoke.snd_seq_set_client_name (_seq, "Loupiottes");
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}
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~SeqHandleWrapper ()
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{
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Dispose ();
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}
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#region IDisposable implementation
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public void Dispose ()
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{
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if (_seq != IntPtr.Zero) {
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Invoke.snd_seq_close (_seq);
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}
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_seq = IntPtr.Zero;
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}
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#endregion
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}
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internal class PointerWrapper : IDisposable
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{
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public IntPtr Pointer { get; private set; }
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public PointerWrapper (int pointerSize)
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{
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Pointer = Marshal.AllocHGlobal (pointerSize);
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}
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public PointerWrapper (IntPtr ptr)
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{
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Pointer = ptr;
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}
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~PointerWrapper ()
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{
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Dispose (false);
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}
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public void Dispose ()
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{
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Dispose (true);
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GC.SuppressFinalize (this);
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}
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protected virtual void Dispose (bool disposing)
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{
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if (Pointer != IntPtr.Zero) {
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Marshal.FreeHGlobal (Pointer);
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}
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}
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}
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public static snd_seq_addr_t PtrToSndSeqAddr (this IntPtr ptr)
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{
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try {
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return (snd_seq_addr_t)Marshal.PtrToStructure (
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ptr,
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typeof(snd_seq_addr_t)
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);
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} catch (Exception e) {
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#if DEBUG
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Console.WriteLine (e.Message);
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#endif
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return new snd_seq_addr_t ();
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}
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}
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public static IntPtr SndSeqAddrToPtr (this snd_seq_addr_t addr)
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{
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IntPtr ptr = typeof(snd_seq_addr_t).Malloc ();
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Marshal.StructureToPtr (addr, ptr, false);
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return ptr;
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}
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static IntPtr Malloc (this Type type)
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{
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return Marshal.AllocHGlobal (Marshal.SizeOf (type));
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}
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public static string PtrToString (this IntPtr p)
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{
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if (p == IntPtr.Zero) {
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return null;
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}
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return Marshal.PtrToStringAnsi (p);
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}
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}
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} |