61 lines
1.7 KiB
C#
61 lines
1.7 KiB
C#
using System;
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using System.Collections.Generic;
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namespace MediaBrowser.Model.Dlna
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{
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public class ResolutionNormalizer
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{
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private static readonly List<ResolutionConfiguration> Configurations =
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new List<ResolutionConfiguration>
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{
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new ResolutionConfiguration(426, 320000),
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new ResolutionConfiguration(640, 400000),
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new ResolutionConfiguration(720, 950000),
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new ResolutionConfiguration(1280, 2500000)
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};
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public static ResolutionOptions Normalize(int? inputBitrate,
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int outputBitrate,
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string inputCodec,
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string outputCodec,
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int? maxWidth,
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int? maxHeight)
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{
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// If the bitrate isn't changing, then don't downlscale the resolution
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if (inputBitrate.HasValue && outputBitrate >= inputBitrate.Value)
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{
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if (maxWidth.HasValue || maxHeight.HasValue)
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{
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return new ResolutionOptions
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{
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MaxWidth = maxWidth,
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MaxHeight = maxHeight
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};
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}
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}
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foreach (var config in Configurations)
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{
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if (outputBitrate <= config.MaxBitrate)
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{
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var originvalValue = maxWidth;
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maxWidth = Math.Min(config.MaxWidth, maxWidth ?? config.MaxWidth);
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if (!originvalValue.HasValue || originvalValue.Value != maxWidth.Value)
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{
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maxHeight = null;
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}
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break;
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}
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}
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return new ResolutionOptions
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{
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MaxWidth = maxWidth,
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MaxHeight = maxHeight
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};
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}
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}
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}
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