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DVDAudio titleset (ATSI) parser

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This commit is contained in:
Grigory Chudov
2018-04-29 16:53:55 -04:00
parent deb3448a55
commit b6c3256d32
8 changed files with 1068 additions and 496 deletions
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46
CUETools.Codecs.MPEG/MPLS/AudioDecoder.cs
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@@ -5,7 +5,7 @@ using System.IO;
namespace CUETools.Codecs.MPEG.MPLS
{
public class AudioDecoder : IAudioSource
public class AudioDecoder : IAudioSource, IAudioContainer
{
public unsafe AudioDecoder(DecoderSettings settings, string path, Stream IO)
{
@@ -13,6 +13,7 @@ namespace CUETools.Codecs.MPEG.MPLS
_path = path;
_IO = IO != null ? IO : new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, 0x10000);
int length = (int)_IO.Length;
if (length > 0x100000) throw new Exception("File too big");
contents = new byte[length];
if (_IO.Read(contents, 0, length) != length) throw new Exception("");
fixed (byte* ptr = &contents[0])
@@ -383,15 +384,30 @@ namespace CUETools.Codecs.MPEG.MPLS
}
}
public List<uint> Chapters
public List<IAudioTitle> AudioTitles
{
get
{
var titles = new List<IAudioTitle>();
foreach (var item in hdr_m.play_item)
foreach (var audio in item.audio)
{
if (audio.coding_type != 0x80 /* LPCM */) continue;
titles.Add(new AudioTitle(this, audio.pid));
}
return titles;
}
}
public List<TimeSpan> Chapters
{
get
{
//settings.IgnoreShortItems
var res = new List<uint>();
var res = new List<TimeSpan>();
if (hdr_m.play_mark.Count < 1) return res;
if (hdr_m.play_item.Count < 1) return res;
res.Add(0);
res.Add(TimeSpan.Zero);
for (int i = 0; i < hdr_m.mark_count; i++)
{
ushort mark_item = hdr_m.play_mark[i].play_item_ref;
@@ -406,7 +422,7 @@ namespace CUETools.Codecs.MPEG.MPLS
if (m_settings.IgnoreShortItems && item_duration < shortItemDuration) continue;
item_offset += item_duration;
}
res.Add(hdr_m.play_mark[i].time - item_in_time + item_offset);
res.Add(TimeSpan.FromSeconds((hdr_m.play_mark[i].time - item_in_time + item_offset) / 45000.0));
}
uint end_offset = 0;
for (int j = 0; j < hdr_m.play_item.Count; j++)
@@ -416,9 +432,9 @@ namespace CUETools.Codecs.MPEG.MPLS
if (m_settings.IgnoreShortItems && item_duration < shortItemDuration) continue;
end_offset += hdr_m.play_item[j].out_time - hdr_m.play_item[j].in_time;
}
res.Add(end_offset);
while (res.Count > 1 && res[1] - res[0] < 45000) res.RemoveAt(1);
while (res.Count > 1 && res[res.Count - 1] - res[res.Count - 2] < 45000) res.RemoveAt(res.Count - 2);
res.Add(TimeSpan.FromSeconds(end_offset / 45000.0));
while (res.Count > 1 && res[1] - res[0] < TimeSpan.FromSeconds(1.0)) res.RemoveAt(1);
while (res.Count > 1 && res[res.Count - 1] - res[res.Count - 2] < TimeSpan.FromSeconds(1.0)) res.RemoveAt(res.Count - 2);
return res;
}
}
@@ -436,6 +452,20 @@ namespace CUETools.Codecs.MPEG.MPLS
DecoderSettings m_settings;
}
public class AudioTitle : IAudioTitle
{
public AudioTitle(AudioDecoder source, int pid)
{
this.source = source;
this.pid = pid;
}
public List<TimeSpan> Chapters => source.Chapters;
AudioDecoder source;
int pid;
}
public struct MPLSPlaylistMark
{
public byte mark_id;