protected override bool read(BinaryReader source, MetaDataIO.ReadTagParams readTagParams)
{
bool result = true;
PSFHeader header = new PSFHeader();
PSFTag tag = new PSFTag();
header.Reset();
tag.Reset();
resetData();
isValid = readHeader(source, ref header);
if (!isValid)
{
throw new Exception("Not a PSF file");
}
if (source.BaseStream.Length > HEADER_LENGTH + header.CompressedProgramLength + header.ReservedAreaLength)
{
source.BaseStream.Seek((long)(4 + header.CompressedProgramLength + header.ReservedAreaLength), SeekOrigin.Current);
if (!readTag(source, ref tag, readTagParams))
{
throw new Exception("Not a PSF tag");
}
tagExists = true;
}
bitrate = (sizeInfo.FileSize - tag.size) * 8 / duration;
return(result);
}
private bool readHeader(ref BinaryReader source, ref PSFHeader header)
{
header.FormatTag = Utils.GetStringFromCharArray(Utils.ReadTrueChars(source, 3));
if (PSF_FORMAT_TAG == header.FormatTag)
{
header.VersionByte = source.ReadByte();
header.ReservedAreaLength = source.ReadUInt32();
header.CompressedProgramLength = source.ReadUInt32();
return(true);
}
else
{
return(false);
}
}
// ---------- SUPPORT METHODS
private bool readHeader(BinaryReader source, ref PSFHeader header)
{
header.FormatTag = Utils.Latin1Encoding.GetString(source.ReadBytes(3));
if (PSF_FORMAT_TAG == header.FormatTag)
{
header.VersionByte = source.ReadByte();
header.ReservedAreaLength = source.ReadUInt32();
header.CompressedProgramLength = source.ReadUInt32();
return(true);
}
else
{
return(false);
}
}
// === PUBLIC METHODS ===
public bool ReadFromFile(String fileName)
{
bool result = true;
PSFHeader header = new PSFHeader();
PSFTag tag = new PSFTag();
FResetData();
header.Reset();
tag.Reset();
FileStream fs = null;
BinaryReader source = null;
try
{
fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
fs.Lock(0, fs.Length);
source = new BinaryReader(fs);
if (!readHeader(ref source, ref header))
{
throw new Exception("Not a PSF file");
}
if (fs.Length > HEADER_LENGTH + header.CompressedProgramLength + header.ReservedAreaLength)
{
fs.Seek((long)(4 + header.CompressedProgramLength + header.ReservedAreaLength), SeekOrigin.Current);
if (!readTag(ref source, ref tag))
{
throw new Exception("Not a PSF tag");
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.StackTrace);
//LogDelegator.GetLogDelegate()(Log.LV_ERROR, e.Message);
result = false;
}
if (fs != null)
{
fs.Unlock(0, fs.Length);
fs.Close();
}
if (tag.tags.ContainsKey(TAG_GAME))
{
FAlbum = (String)tag.tags[TAG_GAME];
}
if (tag.tags.ContainsKey(TAG_ARTIST))
{
FArtist = (String)tag.tags[TAG_ARTIST];
}
if (tag.tags.ContainsKey(TAG_COMMENT))
{
FComment = (String)tag.tags[TAG_COMMENT];
}
if (tag.tags.ContainsKey(TAG_TITLE))
{
FTitle = (String)tag.tags[TAG_TITLE];
}
if (tag.tags.ContainsKey(TAG_YEAR))
{
FYear = (String)tag.tags[TAG_YEAR];
}
if (tag.tags.ContainsKey(TAG_LENGTH))
{
FDuration = parsePSFDuration((String)tag.tags[TAG_LENGTH]);
}
if (tag.tags.ContainsKey(TAG_FADE))
{
FDuration += parsePSFDuration((String)tag.tags[TAG_FADE]);
}
return(result);
}
// === PUBLIC METHODS ===
public bool ReadFromFile(String fileName)
{
bool result = true;
PSFHeader header = new PSFHeader();
PSFTag tag = new PSFTag();
FResetData();
header.Reset();
tag.Reset();
FileStream fs = null;
BinaryReader source = null;
try
{
fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
fs.Lock(0,fs.Length);
source = new BinaryReader(fs);
if ( !readHeader(ref source, ref header) ) throw new Exception("Not a PSF file");
if (fs.Length > HEADER_LENGTH+header.CompressedProgramLength+header.ReservedAreaLength)
{
fs.Seek((long)(4+header.CompressedProgramLength+header.ReservedAreaLength),SeekOrigin.Current);
if ( !readTag(ref source,ref tag) ) throw new Exception("Not a PSF tag");
}
}
catch (Exception e)
{
System.Console.WriteLine(e.StackTrace);
//LogDelegator.GetLogDelegate()(Log.LV_ERROR, e.Message);
result = false;
}
if (fs != null)
{
fs.Unlock(0,fs.Length);
fs.Close();
}
if (tag.tags.ContainsKey(TAG_GAME)) FAlbum = (String)tag.tags[TAG_GAME];
if (tag.tags.ContainsKey(TAG_ARTIST)) FArtist = (String)tag.tags[TAG_ARTIST];
if (tag.tags.ContainsKey(TAG_COMMENT)) FComment = (String)tag.tags[TAG_COMMENT];
if (tag.tags.ContainsKey(TAG_TITLE)) FTitle = (String)tag.tags[TAG_TITLE];
if (tag.tags.ContainsKey(TAG_YEAR)) FYear = (String)tag.tags[TAG_YEAR];
if (tag.tags.ContainsKey(TAG_LENGTH))
{
FDuration = parsePSFDuration( (String)tag.tags[TAG_LENGTH] );
}
if (tag.tags.ContainsKey(TAG_FADE))
{
FDuration += parsePSFDuration( (String)tag.tags[TAG_FADE] );
}
return result;
}
private bool readHeader(ref BinaryReader source, ref PSFHeader header)
{
header.FormatTag = Utils.GetStringFromCharArray( Utils.ReadTrueChars(source, 3) );
if (PSF_FORMAT_TAG == header.FormatTag)
{
header.VersionByte = source.ReadByte();
header.ReservedAreaLength = source.ReadUInt32();
header.CompressedProgramLength = source.ReadUInt32();
return true;
}
else
{
return false;
}
}
