mirror of
https://github.com/Ryujinx/Ryujinx.git
synced 2024-09-11 10:18:52 +02:00
100 lines
2.7 KiB
C#
100 lines
2.7 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.InteropServices;
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namespace SoundIOSharp
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{
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public struct SoundIOChannelLayout
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{
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public static int BuiltInCount {
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get { return Natives.soundio_channel_layout_builtin_count (); }
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}
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public static SoundIOChannelLayout GetBuiltIn (int index)
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{
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return new SoundIOChannelLayout (Natives.soundio_channel_layout_get_builtin (index));
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}
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public static SoundIOChannelLayout GetDefault (int channelCount)
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{
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var handle = Natives.soundio_channel_layout_get_default (channelCount);
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return new SoundIOChannelLayout (handle);
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}
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public static SoundIOChannelId ParseChannelId (string name)
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{
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var ptr = Marshal.StringToHGlobalAnsi (name);
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try {
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return (SoundIOChannelId)Natives.soundio_parse_channel_id (ptr, name.Length);
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} finally {
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Marshal.FreeHGlobal (ptr);
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}
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}
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// instance members
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internal SoundIOChannelLayout (Pointer<SoundIoChannelLayout> handle)
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{
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this.handle = handle;
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}
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readonly Pointer<SoundIoChannelLayout> handle;
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public bool IsNull {
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get { return handle.Handle == IntPtr.Zero; }
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}
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internal IntPtr Handle {
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get { return handle; }
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}
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public int ChannelCount {
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get { return IsNull ? 0 : Marshal.ReadInt32 ((IntPtr) handle + channel_count_offset); }
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}
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static readonly int channel_count_offset = (int) Marshal.OffsetOf<SoundIoChannelLayout> ("channel_count");
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public string Name {
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get { return IsNull ? null : Marshal.PtrToStringAnsi (Marshal.ReadIntPtr ((IntPtr) handle + name_offset)); }
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}
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static readonly int name_offset = (int)Marshal.OffsetOf<SoundIoChannelLayout> ("name");
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public IEnumerable<SoundIOChannelId> Channels {
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get {
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if (IsNull)
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yield break;
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for (int i = 0; i < 24; i++)
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yield return (SoundIOChannelId) Marshal.ReadInt32 ((IntPtr) handle + channels_offset + sizeof (SoundIoChannelId) * i);
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}
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}
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static readonly int channels_offset = (int)Marshal.OffsetOf<SoundIoChannelLayout> ("channels");
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public override bool Equals (object other)
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{
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if (!(other is SoundIOChannelLayout))
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return false;
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var s = (SoundIOChannelLayout) other;
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return handle == s.handle || Natives.soundio_channel_layout_equal (handle, s.handle);
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}
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public override int GetHashCode ()
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{
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return handle.GetHashCode ();
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}
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public string DetectBuiltInName ()
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{
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if (IsNull)
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throw new InvalidOperationException ();
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return Natives.soundio_channel_layout_detect_builtin (handle) ? Name : null;
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}
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public int FindChannel (SoundIOChannelId channel)
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{
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if (IsNull)
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throw new InvalidOperationException ();
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return Natives.soundio_channel_layout_find_channel (handle, (SoundIoChannelId) channel);
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}
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}
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}
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