94 lines
3.9 KiB
C#
94 lines
3.9 KiB
C#
// Copyright (c) 2010-2014 SharpDX - Alexandre Mutel
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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using System;
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using SharpDX.XAudio2;
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namespace SharpDX.XAPO
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{
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/// <summary>
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/// Implements this class to call an existing unmanaged AudioProcessor which supports parameter.
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/// </summary>
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/// <typeparam name="T">the parameter type of this AudioProcessor</typeparam>
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public abstract partial class AudioProcessorParamNative<T> : AudioProcessorNative where T : struct
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{
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private readonly XAudio2.XAudio2 device;
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private static readonly Guid CLSID_ParameterProvider_27 = new Guid("a90bc001-e897-e897-55e4-9e4700000001");
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private ParameterProviderNative _parameterProviderNative;
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private int _sizeOfParamT = Utilities.SizeOf<T>();
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/// <summary>
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/// Initializes a new instance of the <see cref="AudioProcessorParamNative<T>" /> class.
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/// </summary>
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/// <param name="device">The device.</param>
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protected AudioProcessorParamNative(SharpDX.XAudio2.XAudio2 device) : base(IntPtr.Zero)
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{
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if (device == null) throw new ArgumentNullException("device");
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this.device = device;
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}
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/// <summary>
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/// Update the Native Pointer. Rebuild ParameterProviderNative.
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/// </summary>
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protected override void NativePointerUpdated(IntPtr oldPointer)
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{
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base.NativePointerUpdated(oldPointer);
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if (NativePointer != IntPtr.Zero)
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{
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IntPtr parameterProviderPtr;
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var guid = device.Version == XAudio2Version.Version27
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? CLSID_ParameterProvider_27
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: Utilities.GetGuidFromType(typeof(ParameterProvider));
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QueryInterface(guid, out parameterProviderPtr);
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_parameterProviderNative = new ParameterProviderNative(parameterProviderPtr);
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}
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}
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/// <summary>
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/// Get or Set the parameters for this AudioProcessor
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/// </summary>
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public T Parameter
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{
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get
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{
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unsafe
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{
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T param = default(T);
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byte* pParameters = stackalloc byte[_sizeOfParamT];
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_parameterProviderNative.GetParameters(new DataStream(pParameters, _sizeOfParamT, true,true,false));
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Utilities.Read((IntPtr) pParameters, ref param);
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return param;
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}
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}
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set
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{
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unsafe
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{
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byte* pParameters = stackalloc byte[_sizeOfParamT];
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Utilities.Write((IntPtr)pParameters, ref value);
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_parameterProviderNative.SetParameters(new DataStream(pParameters, _sizeOfParamT, true, true, false));
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}
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}
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}
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}
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} |