private void resetClasses()
{
embeder = null;
extractor = null;
GC.Collect(0, GCCollectionMode.Forced);
GC.Collect(1, GCCollectionMode.Forced);
GC.Collect(2, GCCollectionMode.Forced);
}
public async Task ReadAndEmbedVideoStream(string path, List <byte[]> data, IProgress <long> reportEmbededData, long embedSize, byte[] format, byte[] keystream, byte repeatcount, bool isRGB16)
{
getFileStamps(path);
FileStream readVid = new FileStream(path, FileMode.Open, FileAccess.ReadWrite);
using (readVid)
{
int fID = 4;
long seekOffset = 0;
byte[] fourcc = new byte[fID];
readVid.Read(fourcc, 0, 4);
int chunkSize = 0;
int hops = 0;
embedsize2 = 0;
if (embedSize % 2 != 0 && repeatcount != 0)
{
embedsize2 = embedSize + 1;
}
else
{
embedsize2 = embedSize;
}
embeder = new LSBEmbedderClass(data, isRGB16);
int metaSize = 0;
if (repeatcount == 0)
{
metaSize = (cuttle.Length + 1 + 4 + format.Length + 4 + 16);
}
else
{
metaSize = (cuttle.Length + 1 + 4 + format.Length + 4 + 2 + 1);
}
for (int i = 0; i < jOffsetList.Count; i++)
{
readVid.Seek(jOffsetList[i], SeekOrigin.Begin);
readVid.Read(fourcc, 0, 4);
if (getEquivalentDecimal(fourcc) >= metaSize && !okCapJunkChunk)
{
okCapJunkChunk = true;
junkoffset = jOffsetList[i] + 4;
break;
}
}
while (hops < vOffsetList.Count)
{
seekOffset = vOffsetList[hops];
if (stopOperationFlag)
{
break;
}
if (embeder.getEmbeded() != embedsize2)
{
readVid.Seek(seekOffset, SeekOrigin.Begin);
readVid.Read(fourcc, 0, 4);
seekOffset += 4;
chunkSize = getEquivalentDecimal(fourcc);
byte[] container = new byte[chunkSize];
readVid.Read(container, 0, chunkSize);
container = processChunk(container);
readVid.Seek(seekOffset, SeekOrigin.Begin);
readVid.Write(container, 0, chunkSize);
seekOffset += chunkSize;
reportEmbededData.Report(embeder.getEmbeded());
}
else
{
if (okCapJunkChunk)
{
byte flags = 0;
if (keystream.Length == 16)
{
flags = 1;
}
seekOffset = junkoffset - 4;
int pointer = 0;
readVid.Seek(seekOffset, SeekOrigin.Begin);
readVid.Read(fourcc, 0, 4);
chunkSize = getEquivalentDecimal(fourcc);
readVid.Write(cuttle, 0, cuttle.Length);
pointer += cuttle.Length;
readVid.WriteByte(flags);
pointer += 1;
readVid.Write(getEquivalentLittleEndian((long)format.Length), 0, 4);
pointer += 4;
readVid.Write(format, 0, format.Length);
pointer += format.Length;
readVid.Write(getEquivalentLittleEndian(embedSize), 0, 4);
pointer += 4;
readVid.Write(keystream, 0, keystream.Length);
pointer += keystream.Length;
if (flags == 0)
{
readVid.WriteByte(repeatcount);
pointer += 1;
}
while (pointer != chunkSize)
{
readVid.WriteByte(zero0x0);
pointer++;
}
}
else
{
byte flags = 0;
if (keystream.Length == 16)
{
flags = 1;
}
seekOffset = readVid.Length;
readVid.Seek(seekOffset, SeekOrigin.Begin);
readVid.Write(cuttle, 0, cuttle.Length);
readVid.WriteByte(flags);
readVid.Write(getEquivalentLittleEndian((long)format.Length), 0, 4);
readVid.Write(format, 0, format.Length);
readVid.Write(getEquivalentLittleEndian(embedSize), 0, 4);
readVid.Write(keystream, 0, keystream.Length);
}
break;
}
hops++;
if (hops % 2 == 0)
{
await Task.Delay(100);
}
}
}
setFileStamps(path);
readVid.Dispose();
resetClasses();
}
