Joonas Rikkonen
82 lines
3.3 KiB
C#
82 lines
3.3 KiB
C#
// MonoGame - Copyright (C) The MonoGame Team
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// This file is subject to the terms and conditions defined in
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// file 'LICENSE.txt', which is part of this source code package.
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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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namespace Microsoft.Xna.Framework.Content.Pipeline.Audio
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{
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public abstract class AudioProfile
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{
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private static readonly LoadedTypeCollection<AudioProfile> _profiles = new LoadedTypeCollection<AudioProfile>();
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/// <summary>
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/// Find the profile for this target platform.
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/// </summary>
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/// <param name="platform">The platform target for audio.</param>
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/// <returns></returns>
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public static AudioProfile ForPlatform(TargetPlatform platform)
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{
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var profile = _profiles.FirstOrDefault(h => h.Supports(platform));
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if (profile != null)
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return profile;
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throw new PipelineException("There is no supported audio profile for the '" + platform + "' platform!");
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}
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/// <summary>
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/// Returns true if this profile supports audio processing for this platform.
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/// </summary>
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public abstract bool Supports(TargetPlatform platform);
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/// <summary>
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/// Converts the audio content to work on targeted platform.
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/// </summary>
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/// <param name="platform">The platform to build the audio content for.</param>
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/// <param name="quality">The suggested audio quality level.</param>
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/// <param name="content">The audio content to convert.</param>
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/// <returns>The quality used for conversion which could be different from the suggested quality.</returns>
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public abstract ConversionQuality ConvertAudio(TargetPlatform platform, ConversionQuality quality, AudioContent content);
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/// <summary>
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/// Converts the audio content to a streaming format that works on targeted platform.
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/// </summary>
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/// <param name="platform">The platform to build the audio content for.</param>
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/// <param name="quality">The suggested audio quality level.</param>
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/// <param name="content">he audio content to convert.</param>
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/// <param name="outputFileName"></param>
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/// <returns>The quality used for conversion which could be different from the suggested quality.</returns>
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public abstract ConversionQuality ConvertStreamingAudio(TargetPlatform platform, ConversionQuality quality, AudioContent content, ref string outputFileName);
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protected static int QualityToSampleRate(ConversionQuality quality, int sourceSampleRate)
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{
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switch (quality)
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{
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case ConversionQuality.Low:
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return Math.Max(8000, (int)Math.Floor(sourceSampleRate / 2.0));
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case ConversionQuality.Medium:
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return Math.Max(8000, (int)Math.Floor((sourceSampleRate / 4.0) * 3));
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}
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return Math.Max(8000, sourceSampleRate);
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}
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protected static int QualityToBitRate(ConversionQuality quality)
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{
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switch (quality)
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{
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case ConversionQuality.Low:
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return 96000;
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case ConversionQuality.Medium:
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return 128000;
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}
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return 192000;
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}
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}
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}
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