private static new RiffFile read(StreamAccessor accessor)
{
if ("RIFF" != accessor.ReadString(EncodingType.CC4))
{
throw new System.ApplicationException("指定したデータは RIFF データではありません。");
}
RiffFile ret = new RiffFile();
uint size = accessor.ReadUInt32(EncodingType.U4);
ret.type = accessor.ReadString(EncodingType.CC4);
ret.chunks = new Gen::List <Chunk>();
StreamAccessor acChunks = new StreamAccessor(accessor.ReadSubStream(size - 4));
try{
while (acChunks.RestLength > 0)
{
ret.chunks.Add(acChunks.Read <Chunk>());
}
}finally{
acChunks.Stream.Close();
}
return(ret);
}
internal static List read(StreamAccessor accessor)
{
List ret = new List();
if ("LIST" != accessor.ReadString(EncodingType.CC4))
{
throw new System.ApplicationException("読み込もうとしているデータは LIST チャンクではないです。");
}
uint size = accessor.ReadUInt32(EncodingType.U4);
ret.type = accessor.ReadString(EncodingType.CC4);
ret.chunks = new Gen::List <Chunk>();
StreamAccessor acChunks = new StreamAccessor(accessor.ReadSubStream(size - 4));
try{
while (acChunks.RestLength > 0)
{
ret.chunks.Add(acChunks.Read <Chunk>());
}
}finally{
acChunks.Stream.Close();
}
return(ret);
}
private static Chunk read(StreamAccessor accessor)
{
string name = accessor.ReadString(EncodingType.CC4);
if (name == "LIST")
{
accessor.Stream.Seek(-4, System.IO.SeekOrigin.Current);
return(List.read(accessor));
}
Chunk ret = new Chunk(name);
uint size = accessor.ReadUInt32(EncodingType.U4);
ret._stream = accessor.ReadSubStream(size);
return(ret);
}
protected override FileDataCached Read(StreamAccessor accessor)
{
FileDataCached ret = (FileDataCached)System.Activator.CreateInstance(target_type, true);
ret.InitializeForRead();
long pos_bef = accessor.Position;
try {
ret.Read(accessor);
} catch (FileDataCached.NullReturn) {
return(null);
}
long pos_aft = accessor.Position;
accessor.Stream.Position = pos_bef;
ret.stream = accessor.ReadSubStream(pos_aft - pos_bef);
ret.changed = false;
return(ret);
}
private static DirectoryCollection read(StreamAccessor accessor)
{
DirectoryCollection ret = new DirectoryCollection();
uint size = accessor.ReadUInt32(EncodingType.U4);
StreamAccessor acdirs = new StreamAccessor(accessor.ReadSubStream(size));
try{
while (acdirs.RestLength > 0)
{
ImageDirectory item = acdirs.Read <ImageDirectory>();
ret.Add(item);
ret.paths[item.name] = item;
}
}catch (afh.File.StreamOverRunException) {
}catch (System.Exception e) {
afh.File.__dll__.log.WriteError(e, ".thm 内の画像ディレクトリを読込中にエラーが発生しました。");
}
return(ret);
}
public static Tag ReadFromStream(StreamAccessor accessor, out int tagsize)
{
Tag tag = new Tag();
bool unsync;
int size;
try{
size = tag.ReadTagHeader(accessor, out unsync);
tagsize = size + 10;
}catch (System.Exception e) {
__dll__.log.WriteError(e, "TagHeader の読込に失敗しました。");
tagsize = 0;
return(null);
}
System.IO.Stream str = accessor.ReadSubStream((long)size);
StreamAccessor acc_str;
if (unsync)
{
System.IO.Stream stream = ID3Utils.ID3ResolveUnsync(str);
str.Close();
acc_str = new StreamAccessor(stream);
}
else
{
acc_str = new StreamAccessor(str);
}
if (tag.has_ext)
{
uint crc32;
int padding;
try{
tag.ReadExtHeader(acc_str, out crc32, out padding);
}catch (Exception exception2) {
exception = exception2;
__dll__.log.WriteError(exception, "ExtendedHeader の読込に失敗しました。");
return(null);
}
if (tag.hascrc)
{
long crc_start = acc_str.Stream.Position;
long crc_len = (acc_str.Stream.Length - crc_start) - padding;
if (crc_len < 0L)
{
__dll__.log.WriteError(string.Format("Extended Header-Padding Size の値が不正です。大きすぎます:{0}", padding));
return(null);
}
if (crc32 != ID3Utils.CalculateCRC32(acc_str.Stream, crc_start, crc_len))
{
__dll__.log.WriteError("ファイルの CRC32 値が一致しませんでした。");
return(null);
}
}
}
tag.frames = new afh.Collections.DictionaryP <string, Frame>();
while (true)
{
Frame val = acc_str.Read <Frame>(EncodingType.NoSpecified);
if (val == Frame.EndOfFrames)
{
acc_str.Stream.Close();
return(tag);
}
tag.frames.Add(val.FrameId, val);
}
}
