56 lines
1.7 KiB
C#
56 lines
1.7 KiB
C#
using FFMpegCore;
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace SpineViewer.Exporter
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{
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/// <summary>
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/// GIF 导出参数
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/// </summary>
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public class GifExporter : FFmpegVideoExporter
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{
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public GifExporter()
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{
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FPS = 24;
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}
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public override string Format => "gif";
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public override string Suffix => ".gif";
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/// <summary>
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/// 调色板最大颜色数量
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/// </summary>
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public uint MaxColors { get => maxColors; set => maxColors = Math.Clamp(value, 2, 256); }
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private uint maxColors = 256;
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/// <summary>
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/// 透明度阈值
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/// </summary>
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public byte AlphaThreshold { get => alphaThreshold; set => alphaThreshold = value; }
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private byte alphaThreshold = 128;
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/// <summary>
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/// 循环次数, -1 不循环, 0 无限循环, 取值范围 [-1, 65535]
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/// </summary>
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public int Loop { get => loop; set => loop = Math.Clamp(value, -1, 65535); }
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private int loop = 0;
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public override string FileNameNoteSuffix => $"{MaxColors}_{AlphaThreshold}";
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public override void SetOutputOptions(FFMpegArgumentOptions options)
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{
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base.SetOutputOptions(options);
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var v = $"[0:v] split [s0][s1]";
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var s0 = $"[s0] palettegen=reserve_transparent=1:max_colors={MaxColors} [p]";
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var s1 = $"[s1][p] paletteuse=dither=bayer:alpha_threshold={AlphaThreshold}";
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var customArgs = $"-filter_complex \"{v};{s0};{s1}\" -loop {Loop}";
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options.WithCustomArgument(customArgs);
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}
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}
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}
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