mirror of
https://github.com/SubtitleEdit/subtitleedit.git
synced 2024-11-23 03:33:18 +01:00
375 lines
12 KiB
C#
375 lines
12 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 Ayato : SubtitleFormat
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{
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public override string Extension
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{
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get { return ".aya"; }
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}
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public override string Name
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{
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get { return "Ayato"; }
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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 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 >= 3000 && 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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return false;
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var sub = new Subtitle();
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LoadSubtitle(sub, lines, fileName);
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return sub.Paragraphs.Count > 0;
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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 void Save(string fileName, string videoFileName, 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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// header
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var header = new byte[2713];
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header[00] = 0x05;
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header[01] = 0x30;
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header[02] = 0x32;
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header[03] = 0x2E;
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header[04] = 0x30;
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header[05] = 0x33;
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header[06] = 0x05;
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header[07] = 0x41;
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header[08] = 0x79;
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header[09] = 0x61;
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header[10] = 0x74;
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header[11] = 0x6F;
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header[12] = 0x02;
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header[77] = 0x01;
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header[81] = 0x01;
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header[608] = 0x3b;
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header[609] = 0x32;
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header[613] = 0x58;
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header[614] = 0x02;
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header[615] = 0xE8;
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header[616] = 0x03;
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header[617] = 0xE8;
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header[618] = 0x03;
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header[619] = 0xE8;
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header[620] = 0x03;
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header[621] = 0xE8;
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header[622] = 0x03;
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header[639] = 0x02;
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header[682] = (byte)(subtitle.Paragraphs.Count & 0xff);
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header[683] = (byte)((subtitle.Paragraphs.Count >> 8) & 0xff);
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header[686] = 0x09;
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header[687] = 0x04;
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header[751] = 0x08;
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header[760] = 0x01;
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header[761] = 0x0a;
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header[830] = 0x58;
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header[831] = 0x48;
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header[2048] = 0x99;
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header[2049] = 0x02;
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header[2050] = (byte)(subtitle.Paragraphs.Count & 0xff);
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header[2051] = (byte)((subtitle.Paragraphs.Count >> 8) & 0xff);
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header[2069] = 0x17;
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header[2071] = 0x17;
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header[2073] = 0x02;
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header[2075] = 0x27;
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header[2077] = 0x0c;
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header[2079] = 0x04;
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header[2082] = 0x01;
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header[2085] = 0x01;
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// Microsoft Sans Serif
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header[2088] = 0x4d;
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header[2089] = 0x69;
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header[2090] = 0x63;
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header[2091] = 0x72;
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header[2092] = 0x6f;
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header[2093] = 0x73;
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header[2094] = 0x6f;
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header[2095] = 0x66;
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header[2096] = 0x74;
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header[2097] = 0x20;
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header[2098] = 0x53;
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header[2099] = 0x61;
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header[2100] = 0x6e;
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header[2101] = 0x73;
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header[2102] = 0x20;
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header[2103] = 0x53;
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header[2104] = 0x65;
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header[2105] = 0x72;
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header[2106] = 0x69;
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header[2107] = 0x66;
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header[2120] = 0x1f;
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header[2123] = 0x01;
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header[2124] = 0x02;
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header[2128] = 0xff;
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header[2136] = 0x02;
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header[2176] = 0x01;
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header[2193] = 0x02;
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header[2194] = 0x02;
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header[2197] = 0x0C;
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header[2198] = 0x14;
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header[2199] = 0x0C;
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header[2200] = 0x01;
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header[2201] = 0xe8;
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header[2202] = 0x03;
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header[2203] = 0xe8;
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header[2204] = 0x03;
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header[2205] = 0xe8;
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header[2206] = 0x03;
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header[2207] = 0xe8;
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header[2208] = 0x03;
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header[2225] = 0x13;
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header[2226] = 0x08;
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header[2227] = 0xdf;
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header[2228] = 0x07;
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header[2229] = 0x13;
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header[2230] = 0x08;
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header[2231] = 0xdf;
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header[2232] = 0x07;
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fs.Write(header, 0, header.Length);
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// paragraphs
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var sub = new Subtitle(subtitle);
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int number = 1;
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foreach (Paragraph p in sub.Paragraphs)
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{
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WriteParagraph(fs, p, number);
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number++;
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}
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}
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}
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private void WriteParagraph(Stream stream, Paragraph paragraph, int number)
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{
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// subtitle number
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stream.WriteByte((byte)(number & 0xff));
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stream.WriteByte((byte)((number >> 8) & 0xff));
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stream.WriteByte(0);
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stream.WriteByte(0);
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WriteFrames(stream, paragraph.StartTime);
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stream.WriteByte(0);
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WriteFrames(stream, paragraph.EndTime);
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stream.WriteByte(0);
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stream.WriteByte(0x17);
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stream.WriteByte(0);
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stream.WriteByte(2);
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stream.WriteByte(0);
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WriteText(stream, paragraph.Text);
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}
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private void WriteFrames(Stream stream, TimeCode timeCode)
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{
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var frames = (uint)Math.Round((double)MillisecondsToFrames(timeCode.TotalMilliseconds));
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stream.WriteByte((byte)(frames & 0xff));
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stream.WriteByte((byte)((frames >> 8) & 0xff));
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stream.WriteByte((byte)((frames >> 16) & 0xff));
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}
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private void WriteText(Stream stream, string text)
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{
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var bytes = MakeBytes(text);
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stream.WriteByte((byte)(bytes.Length + 1)); // text length
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for (int i = 0; i < 55; i++) // 55 bytes zero padding
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stream.WriteByte(0);
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stream.WriteByte(7);
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stream.Write(bytes, 0, bytes.Length);
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}
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private static byte[] MakeBytes(string text)
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{
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var bytesList = new List<byte>();
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int count = 0;
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foreach (var line in HtmlUtil.RemoveHtmlTags(text, true).SplitToLines())
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{
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if (count > 0)
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{
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bytesList.Add(0x1f);
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bytesList.Add(0x7);
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}
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bytesList.AddRange(Encoding.UTF8.GetBytes(line));
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count++;
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}
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return bytesList.ToArray();
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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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const int startPosition = 0xa99;
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const int textPosition = 72;
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_errorCount = 0;
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subtitle.Paragraphs.Clear();
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subtitle.Header = null;
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var buffer = FileUtil.ReadAllBytesShared(fileName);
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int index = startPosition;
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if (buffer[index] != 1)
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{
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return;
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}
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while (index + textPosition < buffer.Length)
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{
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int textLength = buffer[index + 16];
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if (textLength > 0 && index + textPosition + textLength < buffer.Length)
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{
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string text = GetText(index + textPosition, textLength, buffer);
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if (!string.IsNullOrWhiteSpace(text))
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{
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int startFrames = GetFrames(index + 4, buffer);
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int endFrames = GetFrames(index + 8, buffer);
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subtitle.Paragraphs.Add(new Paragraph(text, FramesToMilliseconds(startFrames), FramesToMilliseconds(endFrames)));
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}
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}
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index += textPosition + textLength;
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}
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subtitle.Renumber();
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}
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private static string GetText(int index, int length, byte[] buffer)
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{
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if (length < 1)
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{
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return string.Empty;
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}
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int offset = 0;
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if (buffer[index] == 7)
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{
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offset = 1;
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}
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else if (buffer[index + 1] == 7)
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{
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offset = 2;
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}
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else if (buffer[index + 2] == 7)
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{
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offset = 3;
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}
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if (buffer[index + offset] < 32)
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{
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offset++;
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}
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if (length - offset < 1)
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{
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return string.Empty;
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}
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var sb = new StringBuilder();
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var textBytes = new List<byte>();
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int i = index + offset;
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int max = i + length - offset;
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while (i < max)
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{
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if (i + 3 < max && buffer[i] < 32 && buffer[i + 1] < 32 && buffer[i + 2] < 32 && buffer[i + 3] == 7)
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{
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AddToLine(textBytes, sb);
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sb.AppendLine();
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if (i + 4 < max && buffer[i + 4] < 32)
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{
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i++;
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}
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i += 3;
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}
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else if (i + 2 < max && buffer[i] < 32 && buffer[i + 1] < 32 && buffer[i + 2] == 7)
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{
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AddToLine(textBytes, sb);
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sb.AppendLine();
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if (i + 3 < max && buffer[i + 3] < 32)
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{
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i++;
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}
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i += 2;
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}
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else if (i + 1 < max && buffer[i] < 32 && buffer[i + 1] == 7)
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{
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AddToLine(textBytes, sb);
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sb.AppendLine();
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if (i + 2 < max && buffer[i + 2] < 32)
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{
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i++;
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}
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i++;
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}
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else if (buffer[i] == 7)
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{
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AddToLine(textBytes, sb);
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sb.AppendLine();
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if (i + 1 < max && buffer[i + 1] < 32)
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{
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i++;
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}
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}
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else
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{
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textBytes.Add(buffer[i]);
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}
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i++;
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}
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AddToLine(textBytes, sb);
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return sb.ToString();
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}
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private static void AddToLine(List<byte> textBytes, StringBuilder sb)
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{
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if (textBytes.Count > 0)
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{
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var lineBuffer = textBytes.ToArray();
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sb.Append(Encoding.UTF8.GetString(lineBuffer, 0, lineBuffer.Length));
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textBytes.Clear();
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}
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}
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private static int GetFrames(int index, byte[] buffer)
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{
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return (buffer[index + 2] << 16) + (buffer[index + 1] << 8) + buffer[index];
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}
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}
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}
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