mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-10-28 06:52:35 +01:00
100 lines
3.8 KiB
C#
100 lines
3.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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namespace Nikse.SubtitleEdit.Core.SubtitleFormats
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{
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public class WinCaps32 : SubtitleFormat
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{
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public override string Extension => ".w32";
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public override string Name => "Wincaps W32";
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public override bool IsMine(List<string> lines, string fileName)
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{
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if (!string.IsNullOrEmpty(fileName) && File.Exists(fileName) && fileName.EndsWith(Extension, StringComparison.OrdinalIgnoreCase))
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{
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var fi = new FileInfo(fileName);
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if (fi.Length >= 640 && fi.Length < 1024000) // not too small or too big
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{
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if (fileName.EndsWith(Extension, StringComparison.OrdinalIgnoreCase))
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{
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byte[] buffer = FileUtil.ReadAllBytesShared(fileName);
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return buffer[0] == 0x46 && // FCX
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buffer[1] == 0x43 &&
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buffer[2] == 0x58;
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}
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}
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}
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return false;
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}
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public override string ToText(Subtitle subtitle, string title)
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{
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throw new NotImplementedException();
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}
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public override void LoadSubtitle(Subtitle subtitle, List<string> lines, string fileName)
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{
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subtitle.Paragraphs.Clear();
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subtitle.Header = null;
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const int blockSize = 528;
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int i = 100;
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byte[] buffer = FileUtil.ReadAllBytesShared(fileName);
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while (i < buffer.Length - blockSize)
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{
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if (buffer[i] == 0x10 && buffer[i + 1] == 0 && buffer[i + 2] == 1) // subtitle block
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{
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var p = new Paragraph();
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var sb = new StringBuilder();
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int idx = i;
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int nextPosition = idx + blockSize;
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while (idx < nextPosition)
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{
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if (buffer[idx] == 0x4f && buffer[idx + 1] == 0x46 && buffer[idx + 2] == 0x66) // textblock = OFf
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{
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int length = buffer[idx + 4] - 2;
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sb.Append(Encoding.Unicode.GetString(buffer, idx + 6, length) + " ");
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idx += length + 4;
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}
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else if (buffer[idx] == 0x54 &&
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buffer[idx + 1] == 0x41 &&
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buffer[idx + 2] == 0x45 &&
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buffer[idx + 3] == 0x4d &&
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buffer[idx + 4] == 0x49 &&
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buffer[idx + 5] == 0x54) // time codes = TAEMIT
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{
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p.StartTime = DecodeTime(buffer, idx + 10);
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p.EndTime = DecodeTime(buffer, idx + 14);
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idx += 15;
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}
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else
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{
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idx++;
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}
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}
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p.Text = Utilities.AutoBreakLine(sb.ToString().TrimEnd());
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if (p.Text.Length > 0)
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subtitle.Paragraphs.Add(p);
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i = nextPosition;
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}
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else
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{
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i++;
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}
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}
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subtitle.Renumber();
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}
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private static TimeCode DecodeTime(byte[] buffer, int idx)
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{
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int hours = 0;
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int frames = buffer[idx];
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int seconds = buffer[idx + 1];
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int minutes = buffer[idx + 2];
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return new TimeCode(hours, minutes, seconds, FramesToMillisecondsMax999(frames));
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}
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}
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}
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