/// ------------------------------------------------------------------------------------
/// <summary>
/// Copies the transcription data from one audio document to another.
/// </summary>
/// ------------------------------------------------------------------------------------
public void Copy(string destFilePath, bool md5MustMatch)
{
// first check MD5
if (md5MustMatch && (AudioReader.GetMD5HashCode(destFilePath) != m_doc.MD5HashCode))
{
return;
}
// copy the transcription data
m_doc = m_doc.Clone();
m_doc.AudioFile = destFilePath;
Commit();
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Initializes an object to read SA data from the SA database.
/// </summary>
/// ------------------------------------------------------------------------------------
public bool Initialize(string audioFilePath, bool isForTmpOperation)
{
// Check if the DB used in some beta versions still exists. If so,
// then convert the documents therein to companion transcription files.
ConvertOldDatabaseToCompanionFiles();
m_doc = SaAudioDocument.Load(audioFilePath, isForTmpOperation, true);
if (m_doc != null)
{
ResetSegmentEnumerators();
return(true);
}
try {
using (AudioReader audioReader = new AudioReader()) {
AudioReader.InitResult result = audioReader.Initialize(audioFilePath);
if (result == AudioReader.InitResult.FileNotFound)
{
string msg = string.Format(Resources.kstidWaveFileNotFound, GUI.Utils.PrepFilePathForMsgBox(audioFilePath));
GUI.Utils.MsgBox(msg, MessageBoxButtons.OK);
return(false);
}
if ((result == AudioReader.InitResult.InvalidFormat))
{
string msg = string.Format(Resources.kstidInvalidWaveFile, GUI.Utils.PrepFilePathForMsgBox(audioFilePath));
GUI.Utils.MsgBox(msg, MessageBoxButtons.OK);
return(false);
}
// Try reading data from older SA audio files, converting
// it to Unicode along the way.
if (!audioReader.Read())
{
return(false);
}
// Now try reading the companion transcription file again.
m_doc = SaAudioDocument.Load(audioFilePath, isForTmpOperation, false);
ResetSegmentEnumerators();
}
} catch (Exception e) {
string msg = string.Format(Resources.kstidErrorInitializingDocReader, e.Message);
GUI.Utils.MsgBox(msg, MessageBoxButtons.OK);
return(false);
}
return(true);
}
/// ------------------------------------------------------------------------------------
/// <summary>
/// Commits to a transcription file the data collected in SaAudioDocumentWriter.
/// When backupOldAudioFile is true, the assumption is the audio file contains
/// old SA chunks and they are stripped out after the file is backed up.
/// </summary>
/// ------------------------------------------------------------------------------------
public bool Commit(bool backupOldAudioFile)
{
bool retVal = m_doc.Save();
if (!retVal)
{
return(false);
}
if (backupOldAudioFile)
{
// First, make a backup copy of the file.
string newExt = "SA2" + Path.GetExtension(m_doc.AudioFile);
string newPath = Path.GetDirectoryName(m_doc.AudioFile);
if (!newPath.EndsWith("\\"))
{
newPath += "\\";
}
newPath += "SA2 Wav Files\\";
Directory.CreateDirectory(newPath);
newPath += Path.GetFileName(m_doc.AudioFile);
newPath = Path.ChangeExtension(newPath, newExt);
if (!File.Exists(newPath)) // don't copy if it's already backed up
{
File.Copy(m_doc.AudioFile, newPath);
}
}
if ((File.GetAttributes(m_doc.AudioFile) & FileAttributes.ReadOnly) != FileAttributes.ReadOnly)
{
File.SetAttributes(m_doc.AudioFile, FileAttributes.Normal);
int newFileLength;
byte[] bytes = null;
// Now, read all the bytes in the file that are not from SA chunks.
using (FileStream stream = File.Open(m_doc.AudioFile, FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite)) {
// Get the offset in the file of the first SA chunk. That will
// be the length of the file after the SA chunks are removed.
newFileLength = (int)AudioReader.GetChunkOffset(stream, AudioReader.kidSAChunk);
if (newFileLength > 0)
{
stream.Position = 0;
BinaryReader reader = new BinaryReader(stream);
bytes = reader.ReadBytes(newFileLength);
}
stream.Flush();
stream.Close();
}
if (newFileLength <= 0 || bytes == null)
{
return(true);
}
// Now rewrite the file without all the SA chunks. Write all the bytes
// then skip over the 'RIFF' tag and write out the modify RIFF chunk
// length, which is 8 bytes less than the length of the file since it
// doesn't include 'RIFF' and the 4 bytes for the RIFF chunk length.
using (FileStream stream = File.Open(m_doc.AudioFile, FileMode.Truncate, FileAccess.Write, FileShare.ReadWrite)) {
BinaryWriter writer = new BinaryWriter(stream);
writer.Write(bytes);
stream.Position = 4;
writer.Write(newFileLength - 8);
stream.Close();
}
}
return(true);
}
