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70 lines
2.8 KiB
C#
70 lines
2.8 KiB
C#
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Copyright (c) 2009, Tom Lokovic
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright
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// notice, this list of conditions and the following disclaimer in the
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// documentation and/or other materials provided with the distribution.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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using System;
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using System.Collections.Generic;
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namespace Midi
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{
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/// <summary>
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/// Utility functions for encoding and decoding short messages.
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/// </summary>
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static class ShortMsg
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{
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/// <summary>
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/// Decodes a Note On short message.
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/// </summary>
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public static void DecodeMsg(UIntPtr dwParam1, UIntPtr dwParam2,
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out int channel, out int mode, out int code, out int velocity, out UInt32 timestamp)
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{
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channel = (int)dwParam1 & 0x0f;
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mode = ((int)dwParam1 & 0xf0) >> 4;
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code = ((int)dwParam1 & 0xff00) >> 8;
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velocity = ((int)dwParam1 & 0xff0000) >> 16;
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timestamp = (UInt32)dwParam2;
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}
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/// <summary>
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/// Encodes a Note On short message.
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/// </summary>
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public static UInt32 EncodeMsg(int channel, int code, int velocity)
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{
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return (UInt32)(0x90 | (channel) | (code << 8) | (velocity << 16));
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}
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}
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}
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