public override void Write(byte[] buffer, int offset, int count)
{
int currentChunkCapacity = (int)(Length - Position);
int fillCurrentImage(int sourceBytesToCopy, int sourceOffset)
{
for (var to = sourceBytesToCopy + sourceOffset; sourceOffset < to; sourceOffset++)
{
CurrentChunk[Position++] = buffer[sourceOffset];
}
CheckForNextImage();
return(sourceOffset);
}
int copyCompleteImage(int offset)
{
byte[] nextChunk = new byte[Length];
Array.Copy(buffer, offset, nextChunk, 0, Length);
_chunks.Enqueue(nextChunk);
return((int)(offset + Length));
}
if (currentChunkCapacity > count)
{
fillCurrentImage(count, offset);
return;
}
// current image is too small
if (count > currentChunkCapacity)
{
offset = fillCurrentImage(currentChunkCapacity, offset);
}
int remainingCounted = count - offset;
// copy image-block-wise
for (; remainingCounted >= Length; remainingCounted = count - offset)
{
offset = copyCompleteImage(offset);
}
// fill until source is depleted
if (remainingCounted > 0)
{
fillCurrentImage(remainingCounted, offset);
return;
}
}
private async Task ParseInputStream(IBoundedQueue <MutableByteImage> queue, IBoundedQueue <byte[]> chunksQueue, int width, int height, ChunkedSimpleMemoryStream memoryStream)
{
int count = 0;
while (true)
{
try
{
var item = await chunksQueue.DequeueOrDefault();
if (item == default)
{
break;
}
_logger.NotifyFillstate(++count, "ParsedImages");
_logger.NotifyFillstate(chunksQueue.Count, "ChunkedQueue");
await queue.Enqueue(_factory.FromBytes(width, height, item));
}
catch (Exception e) { _logger.LogException(e); }
}
if (memoryStream.HasUnwrittenData)
{
_logger.WriteLine("Unwritten data exists after finishing parsings." +
" This indicates a severe issue with frame splitting", Verbosity.Warning);
}
}
private async Task DecodeImage(IBoundedQueue <T> queue)
{
MemoryStream data;
while ((data = await dataToParse.DequeueOrDefault()) != null)
{
var bmp = new Bitmap(data);
var width = bmp.Width;
var height = bmp.Height;
var pixelFormat = bmp.PixelFormat;
var bmp1Data = bmp.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, pixelFormat);
var length = bmp1Data.Stride * bmp1Data.Height;
byte[] bmp1Bytes = new byte[length];
Marshal.Copy(bmp1Data.Scan0, bmp1Bytes, 0, length);
await queue.Enqueue(factory.FromBytes(width, height, bmp1Bytes));
bmp.UnlockBits(bmp1Data);
bmp.Dispose();
data.Dispose();
logger.NotifyFillstate(dataToParse.Count, "ParseBuffer");
}
}
public async override Task Produce(IBoundedQueue <T> queue)
{
foreach (var filename in filenames)
{
try
{
logger.NotifyFillstate(queue.Count, this.GetType().Name);
var bmp1 = new Bitmap(filename);
var height = bmp1.Height;
var width = bmp1.Width;
var pixelFormat = bmp1.PixelFormat;
var bmp1Data = bmp1.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadOnly, pixelFormat);
var length = bmp1Data.Stride * bmp1Data.Height;
byte[] bmp1Bytes = new byte[length];
Marshal.Copy(bmp1Data.Scan0, bmp1Bytes, 0, length);
var image = factory.FromBytes(width, height, bmp1Bytes);
await queue.Enqueue(image);
bmp1.UnlockBits(bmp1Data);
bmp1.Dispose();
}
catch (Exception e) { Console.WriteLine(e); }
}
queue.CompleteAdding();
}
public async override Task Produce(IBoundedQueue <T> queue)
{
for (int i = 0; i < count; i++)
{
logger.NotifyFillstate(i, "TestData");
var data = new byte[data1.Length];
((i % 2 == 0) ? data1 : data2).CopyTo(data, 0);
await queue.Enqueue(factory.FromBytes(width, height, data, format));
}
queue.CompleteAdding();
}
private async Task ReadFromDisk()
{
int i = 0;
foreach (var filename in filenames)
{
try
{
logger.NotifyFillstate(dataToParse.Count, "ReadBuffer");
logger.NotifyFillstate(i, "FilesRead");
await dataToParse.Enqueue(new MemoryStream(File.ReadAllBytes(filename), false));
i++;
}
catch (Exception e) { Console.WriteLine(e); }
}
dataToParse.CompleteAdding();
}
public async override Task Produce(IBoundedQueue <T> queue)
{
var bytesToRead = Width * Height * Image.GetPixelFormatSize(Format);
while (this.InputStream.CanRead)
{
try
{
var bm = new Bitmap(
Width,
Height,
Width,
Format,
Marshal.UnsafeAddrOfPinnedArrayElement(this.InputStream.ReadBytes(bytesToRead), 0));
await queue.Enqueue(factory.FromImage(bm));
}
catch (Exception e) { logger.LogException(e); }
}
queue.CompleteAdding();
}
