mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-10-28 06:52:35 +01:00
469 lines
21 KiB
C#
469 lines
21 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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/// <summary>
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/// The ULTECH caption file format (ULT/ULD file) is a compact binary file that stores captions with embedded EIA-608 control codes
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/// http://en.wikipedia.org/wiki/EIA-608
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/// </summary>
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public class Ultech130 : SubtitleFormat
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{
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private const string UltechId = "ULTECH\01.30";
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public override string Extension
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{
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get { return ".ult"; }
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}
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public const string NameOfFormat = "Ultech 1.30 Caption";
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public override string Name
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{
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get { return NameOfFormat; }
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}
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public override bool IsTimeBased
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{
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get { return true; }
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}
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public static void Save(string fileName, Subtitle subtitle)
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{
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using (var fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))
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{
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byte[] buffer = Encoding.ASCII.GetBytes(UltechId);
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fs.Write(buffer, 0, buffer.Length);
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buffer = new byte[] { 0, 0, 2, 0x1D, 0 }; // ?
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fs.Write(buffer, 0, buffer.Length);
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int numberOfLines = subtitle.Paragraphs.Count;
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fs.WriteByte((byte)(numberOfLines % 256)); // paragraphs - low byte
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fs.WriteByte((byte)(numberOfLines / 256)); // paragraphs - high byte
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buffer = new byte[] { 0, 0, 0, 0, 0x1, 0, 0xF, 0x15, 0, 0, 0, 0, 0, 0, 0, 0x1, 0, 0xE, 0x15, 0, 0, 0, 0, 0, 0, 0, 0x1, 0, 0xD, 0x15, 0, 0, 0, 0, 0, 0, 0, 0x1, 0, 0xC, 0x15, 0, 0, 0, 0, 0, 0, 0, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; // ?
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fs.Write(buffer, 0, buffer.Length);
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buffer = Encoding.ASCII.GetBytes("Subtitle Edit");
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fs.Write(buffer, 0, buffer.Length);
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while (fs.Length < 512)
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fs.WriteByte(0);
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var footer = new byte[] { 0xF1, 0x0B, 0x00, 0x00, 0x00, 0x1B, 0x18, 0x14, 0x20, 0x14, 0x2E, 0x14, 0x2F, 0x00 }; // footer
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// paragraphs
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foreach (Paragraph p in subtitle.Paragraphs)
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{
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// convert line breaks
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var sb = new StringBuilder();
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var line = new StringBuilder();
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int skipCount = 0;
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int numberOfNewLines = Utilities.GetNumberOfLines(p.Text);
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bool italic = p.Text.StartsWith("<i>") && p.Text.EndsWith("</i>");
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string text = HtmlUtil.RemoveHtmlTags(p.Text, true);
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if (italic)
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{
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sb.Append('\u0011');
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sb.Append('\u002E');
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}
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int y = 0x74 - (numberOfNewLines * 0x20);
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for (int j = 0; j < text.Length; j++)
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{
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if (text.Substring(j).StartsWith(Environment.NewLine, StringComparison.Ordinal))
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{
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y += 0x20;
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if (line.Length > 0)
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sb.Append(line);
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line.Clear();
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skipCount = Environment.NewLine.Length - 1;
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sb.Append('\u0014');
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sb.Append(Convert.ToChar((byte)(y)));
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//center
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sb.Append('\u0017');
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sb.Append('\u0021');
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if (italic)
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{
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sb.Append('\u0011');
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sb.Append('\u002E');
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}
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}
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else if (skipCount == 0)
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{
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line.Append(text[j]);
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}
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else
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{
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skipCount--;
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}
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}
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if (line.Length > 0)
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sb.Append(line);
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text = sb.ToString();
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// codes?
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buffer = new byte[] {
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0x14,
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0x20,
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0x14,
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0x2E,
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0x14,
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(byte)(0x74 - (numberOfNewLines * 0x20)),
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0x17, 0x21, // 0x1721=center, 0x1722=right ?
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};
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//if (text.StartsWith("{\\a6}"))
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//{
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// text = p.Text.Remove(0, 5);
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// buffer[7] = 1; // align top
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//}
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//else if (text.StartsWith("{\\a1}"))
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//{
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// text = p.Text.Remove(0, 5);
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// buffer[8] = 0x0A; // align left
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//}
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//else if (text.StartsWith("{\\a3}"))
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//{
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// text = p.Text.Remove(0, 5);
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// buffer[8] = 0x1E; // align right
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//}
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//else if (text.StartsWith("{\\a5}"))
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//{
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// text = p.Text.Remove(0, 5);
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// buffer[7] = 1; // align top
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// buffer[8] = 05; // align left
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//}
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//else if (text.StartsWith("{\\a7}"))
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//{
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// text = p.Text.Remove(0, 5);
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// buffer[7] = 1; // align top
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// buffer[8] = 0xc; // align right
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//}
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fs.WriteByte(0xF1); //ID of start record
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// length
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int length = text.Length + 15;
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fs.WriteByte((byte)(length));
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fs.WriteByte(0);
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// start time
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WriteTime(fs, p.StartTime);
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fs.Write(buffer, 0, buffer.Length);
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// text
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buffer = Encoding.ASCII.GetBytes(text);
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fs.Write(buffer, 0, buffer.Length); // Text starter på index 19 (0 baseret)
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fs.WriteByte(0x14);
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fs.WriteByte(0x2F);
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fs.WriteByte(0);
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// end time
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fs.WriteByte(0xF1); // id of start record
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fs.WriteByte(7); // length of end time
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fs.WriteByte(0);
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WriteTime(fs, p.EndTime);
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fs.WriteByte(0x14);
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fs.WriteByte(0x2c);
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fs.WriteByte(0);
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}
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buffer = footer;
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fs.Write(buffer, 0, buffer.Length);
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}
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}
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private static void WriteTime(FileStream fs, TimeCode timeCode)
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{
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fs.WriteByte((byte)timeCode.Hours);
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fs.WriteByte((byte)timeCode.Minutes);
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fs.WriteByte((byte)timeCode.Seconds);
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fs.WriteByte((byte)MillisecondsToFramesMaxFrameRate(timeCode.Milliseconds));
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}
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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))
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{
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var fi = new FileInfo(fileName);
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if (fi.Length >= 200 && fi.Length < 1024000) // not too small or too big
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{
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if (fileName.EndsWith(".ult", StringComparison.OrdinalIgnoreCase) || fileName.EndsWith(".uld", StringComparison.OrdinalIgnoreCase)) // drop frame is often named uld, and ult for non-drop
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{
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byte[] buffer = FileUtil.ReadAllBytesShared(fileName);
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string id = Encoding.ASCII.GetString(buffer, 0, UltechId.Length);
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return id == UltechId;
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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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return "Not supported!";
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}
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private static TimeCode DecodeTimestamp(byte[] buffer, int index)
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{
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return new TimeCode(buffer[index], buffer[index + 1], buffer[index + 2], FramesToMillisecondsMax999(buffer[index + 3]));
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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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byte[] buffer = FileUtil.ReadAllBytesShared(fileName);
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int i = 512;
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Paragraph last = null;
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var sb = new StringBuilder();
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while (i < buffer.Length - 25)
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{
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var p = new Paragraph();
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int length = buffer[i + 1];
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p.StartTime = DecodeTimestamp(buffer, i + 3);
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if (last != null && last.EndTime.TotalMilliseconds == 0)
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last.EndTime.TotalMilliseconds = p.StartTime.TotalMilliseconds - 1;
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if (length > 22)
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{
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int start = i + 7;
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sb.Clear();
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int skipCount = 0;
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bool italics = false;
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//bool font = false;
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for (int k = start; k < length + i; k++)
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{
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byte b = buffer[k];
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if (skipCount > 0)
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{
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skipCount--;
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}
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else if (b < 0x1F)
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{
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byte b2 = buffer[k + 1];
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skipCount = 1;
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if (sb.Length > 0 && !sb.ToString().EndsWith(Environment.NewLine) && !sb.EndsWith('>'))
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{
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//if (font)
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// sb.Append("</font>");
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if (italics)
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sb.Append("</i>");
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sb.AppendLine();
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//font = false;
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italics = false;
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}
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//string code = VobSub.Helper.IntToBin(buffer[k] * 256 + buffer[k+1], 16);
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//var codeBytes = new List<char>();
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//if (b == 0x11 && b2 == 0x28)
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//{
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// sb.Append("<font color=\"red\">");
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// font = true;
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//}
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//else
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if (b == 0x11 && b2 == 0x2e)
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{
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sb.Append("<i>");
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italics = true;
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}
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//foreach (char ch in code)
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// codeBytes.Insert(0, ch);
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//if (codeBytes[13] == '0' && codeBytes[14] == '0' && codeBytes[12] == '1' && codeBytes[6] == '1')
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//{ // preamble address code
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// if (code.Substring(11, 4) == "1000")
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// {
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// sb.Append("<font color=\"green\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0010")
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// {
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// sb.Append("<font color=\"blue\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0011")
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// {
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// sb.Append("<font color=\"cyan\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0100")
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// {
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// sb.Append("<font color=\"red\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0101")
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// {
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// sb.Append("<font color=\"yellow\">");
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// font = true;
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// }
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// //else if (code.Substring(11, 4) == "0110")
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// //{
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// // sb.Append("<font color=\"magenta\">");
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// // font = true;
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// //}
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//}
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//else if (codeBytes[14] == '0' && codeBytes[13] == '0' && codeBytes[10] == '0' && codeBytes[9] == '0' && codeBytes[6] == '0' &&
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// codeBytes[12] == '1' && codeBytes[8] == '1' && codeBytes[6] == '1')
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//{ // midrow code
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// if (code.Substring(11, 4) == "1000")
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// {
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// sb.Append("<font color=\"green\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0010")
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// {
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// sb.Append("<font color=\"blue\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0011")
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// {
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// sb.Append("<font color=\"cyan\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0100")
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// {
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// sb.Append("<font color=\"red\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0101")
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// {
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// sb.Append("<font color=\"yellow\">");
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// font = true;
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// }
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// //else if (code.Substring(11, 4) == "0110")
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// //{
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// // sb.Append("<font color=\"magenta\">");
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// // font = true;
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// //}
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//}
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//else if ((codeBytes[14] == '0' && codeBytes[13] == '0' && codeBytes[9] == '0' && codeBytes[6] == '0' && codeBytes[4] == '0' &&
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// codeBytes[12] == '1' && codeBytes[10] == '1' && codeBytes[5] == '1') || b == 0x11)
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//{ // codeBytes[10] == 0 ???
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// //control codes
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// if (code.Substring(11, 4) == "0111" && buffer[k] == 0x11)
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// {
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// sb.Append("<i>");
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// italics = true;
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// }
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// else if (code.Substring(11, 4) == "1000")
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// {
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// sb.Append("<font color=\"green\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0010")
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// {
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// sb.Append("<font color=\"blue\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0011")
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// {
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// sb.Append("<font color=\"cyan\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0100")
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// {
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// sb.Append("<font color=\"red\">");
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// font = true;
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// }
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// else if (code.Substring(11, 4) == "0101")
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// {
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// sb.Append("<font color=\"yellow\">");
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// font = true;
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// }
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// //else if (code.Substring(11, 4) == "0110")
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// //{
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// // sb.Append("<font color=\"magenta\">");
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// // font = true;
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// //}
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//}
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//else
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//{
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// if (code.Substring(11, 4) == "0111" && buffer[k] == 0x11)
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// {
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// sb.Append("<i>");
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// italics = true;
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// }
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// else if (code.Substring(11, 4) == "0101" && b == 0x11)
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// {
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// sb.Append("<font color=\"yellow\">");
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// font = true;
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// }
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//// if (code.Substring(11, 4) == "0111")
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//// {
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//// //System.Windows.Forms.MessageBox.Show(code);
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//// sb.Append("<i>");
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//// }
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//// else if (code.Substring(11, 4) == "0101")
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//// sb.Append("<font color=\"yellow\">");
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//}
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}
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else if (b == 0x80)
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{
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//if (sb.Length == 0)
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// break;
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//if (sb.Length > 0 && !sb.ToString().EndsWith(Environment.NewLine))
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//{
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// if (font)
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// sb.Append("</font>");
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// if (italics)
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// sb.Append("</i>");
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// sb.AppendLine();
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// font = false;
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// italics = false;
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//}
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}
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else
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{
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sb.Append(Encoding.GetEncoding(1252).GetString(buffer, k, 1));
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}
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}
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p.Text = sb.ToString().Trim();
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//if (font)
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// p.Text += "</font>";
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if (italics)
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p.Text += "</i>";
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p.Text = p.Text.Replace(Environment.NewLine + Environment.NewLine, Environment.NewLine);
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p.Text = p.Text.Replace(Environment.NewLine + Environment.NewLine, Environment.NewLine);
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p.Text = p.Text.Replace(Environment.NewLine + Environment.NewLine, Environment.NewLine);
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subtitle.Paragraphs.Add(p);
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}
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else if (last != null)
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{
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last.EndTime.TotalMilliseconds = p.StartTime.TotalMilliseconds;
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}
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last = p;
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i += length + 3;
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}
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if (last != null)
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{
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if (last.EndTime.TotalMilliseconds == 0)
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last.EndTime.TotalMilliseconds = last.StartTime.TotalMilliseconds + 2500;
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if (last.Duration.TotalMilliseconds > Configuration.Settings.General.SubtitleMaximumDisplayMilliseconds)
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last.EndTime.TotalMilliseconds = last.StartTime.TotalMilliseconds + Utilities.GetOptimalDisplayMilliseconds(last.Text);
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}
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subtitle.Renumber();
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}
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public override List<string> AlternateExtensions
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{
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get
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{
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return new List<string>() { ".uld" }; // Ultech drop frame
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}
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}
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}
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} |