private static void WriteArchive(string archiveFilename,
List <FileStream> filesToPackReaders,
List <IndexEntry> indexEntries,
List <string> names,
WaveFormatEx waveFormat)
{
// ClmFile cannot contain more than 32 bit size internal file count.
ClmHeader header = ClmHeader.MakeHeader(waveFormat, (uint)names.Count);
using (FileStream fs = new FileStream(archiveFilename, FileMode.Create, FileAccess.Write, FileShare.None))
using (BinaryWriter clmFileWriter = new BinaryWriter(fs))
{
header.Serialize(clmFileWriter);
// Prepare and write Archive Index
PrepareIndex(ClmHeader.SizeInBytes, names, indexEntries);
for (int i = 0; i < indexEntries.Count; ++i)
{
indexEntries[i].Serialize(clmFileWriter);
}
// Copy files into the archive
for (int i = 0; i < header.packedFilesCount; ++i)
{
using (BinaryReader reader = new BinaryReader(filesToPackReaders[i], System.Text.Encoding.ASCII, true))
{
reader.BaseStream.Seek(0, SeekOrigin.Begin);
clmFileWriter.Write(reader.ReadBytes((int)reader.BaseStream.Length));
}
}
}
}
public ClmHeader(BinaryReader reader)
{
fileVersion = reader.ReadBytes(32);
waveFormat = new WaveFormatEx(reader);
unknown = reader.ReadBytes(6);
packedFilesCount = reader.ReadUInt32();
}
public ClmHeader(byte[] fileVersion, WaveFormatEx waveFormat, byte[] unknown, uint packedFilesCount)
{
this.fileVersion = fileVersion;
this.waveFormat = waveFormat;
this.unknown = unknown;
this.packedFilesCount = packedFilesCount;
}
public static WaveHeader Create(WaveFormatEx waveFormat, uint dataLength)
{
WaveHeader waveHeader = new WaveHeader();
waveHeader.riffHeader.riffTag = CommonTags.tagRIFF;
waveHeader.riffHeader.waveTag = CommonTags.tagWAVE;
waveHeader.riffHeader.chunkSize = Tag.SizeInBytes + FormatChunk.SizeInBytes + ChunkHeader.SizeInBytes + dataLength;
waveHeader.formatChunk.fmtTag = CommonTags.tagFMT_;
waveHeader.formatChunk.formatSize = WaveFormatEx.SizeInBytes;
waveHeader.formatChunk.waveFormat = waveFormat;
waveHeader.formatChunk.waveFormat.cbSize = 0;
waveHeader.dataChunk.formatTag = CommonTags.tagDATA;
waveHeader.dataChunk.length = dataLength;
return(waveHeader);
}
// Private functions for packing files
// Reads the beginning of each file and verifies it is formatted as a WAVE file. Locates
// the WaveFormatEx structure and start of data. The WaveFormat is stored in the waveFormats container.
// The current stream position is set to the start of the data chunk.
// Note: This function assumes that all stream positions are initially set to the beginning
// of the file. When reading the wave file header, it does not seek to the file start.
private static void ReadAllWaveHeaders(List <FileStream> filesToPackReaders, List <WaveFormatEx> waveFormats, List <IndexEntry> indexEntries)
{
RiffHeader header;
// Read in all the headers and find start of data
for (int i = 0; i < filesToPackReaders.Count; ++i)
{
using (BinaryReader reader = new BinaryReader(filesToPackReaders[i], System.Text.Encoding.ASCII, true))
{
// Read the file header
filesToPackReaders[i].Seek(0, SeekOrigin.Begin);
header = new RiffHeader(reader);
if (header.riffTag != CommonTags.tagRIFF || header.waveTag != CommonTags.tagWAVE)
{
throw new System.Exception("Error reading header from file " + filesToPackReaders[i].Name);
}
// Check that the file size makes sense (matches with header chunk length + 8)
if (header.chunkSize + 8 != filesToPackReaders[i].Length)
{
throw new System.Exception("Chunk size does not match file length in " + filesToPackReaders[i].Name);
}
// Find the format tag
FindChunk(CommonTags.tagFMT_, reader);
// Read in the wave format
WaveFormatEx waveFormat = new WaveFormatEx(reader);
waveFormat.cbSize = 0;
waveFormats.Add(waveFormat);
// Find the start of the data and record length
IndexEntry entry = new IndexEntry();
entry.dataLength = (int)FindChunk(CommonTags.tagDATA, reader);
indexEntries.Add(entry);
// Note: Current stream position is set to the start of the wave data
}
}
}
public override bool Equals(object obj)
{
WaveFormatEx rhs = obj as WaveFormatEx;
return(this == rhs);
}
public FormatChunk(BinaryReader reader)
{
fmtTag = new Tag(reader);
formatSize = reader.ReadUInt32();
waveFormat = new WaveFormatEx(reader);
}
public FormatChunk()
{
fmtTag = new Tag();
waveFormat = new WaveFormatEx();
}
public static ClmHeader MakeHeader(WaveFormatEx waveFormat, uint packedFilesCount)
{
return(new ClmHeader(standardFileVersion.ToArray(), waveFormat, standardUnknown.ToArray(), packedFilesCount));
}
