public ArraySegment <byte> PreRender(OutputFrame frame)
{
var pixels = frame.Pixels;
var offsetX = frame.OffsetX;
var offsetY = frame.OffsetY;
var cacheId = frame.CacheId;
var offsetStatic = frame.OffsetStatic;
bool offsetSupported = ((serverCapabilities & ServerCapabilities.Offset) != 0);
bool greyscaleSupported = ((serverCapabilities & ServerCapabilities.GreyScale) != 0);
const int offsetLen = 7 + 4 + 1 + 4 + 1;
const int pxLen = 22;
var cachingPossible = cacheId != -1 && (offsetSupported || offsetStatic);
if (cachingPossible)
{
byte[] cachedFrame;
if (!_cache.TryGetValue(cacheId, out cachedFrame))
{
Console.WriteLine($"Frame {cacheId} not rendered! rendering...");
using (var cachems = GetBuffer(pixels.Length * pxLen))
{
RenderPixels(pixels, offsetX, offsetY, offsetSupported, greyscaleSupported, cachems);
var rendered = cachems.ToArraySegment();
byte[] renderedArray = rendered.ToArray();
_cache[cacheId] = renderedArray;
cachedFrame = renderedArray;
}
}
if (!offsetStatic)
{
using (var ms = GetBuffer(pixels.Length * pxLen + offsetLen))
{
WriteOffset(offsetX, offsetY, ms);
ms.Write(cachedFrame, cachedFrame.Length);
return(ms.ToArraySegment());
}
}
else
{
return(new ArraySegment <byte>(cachedFrame));
}
}
else
{
using (var ms = GetBuffer(pixels.Length * pxLen + (offsetSupported ? offsetLen : 0)))
{
if (offsetSupported)
{
WriteOffset(offsetX, offsetY, ms);
}
RenderPixels(pixels, offsetX, offsetY, offsetSupported, greyscaleSupported, ms);
return(ms.ToArraySegment());
}
}
}
public ArraySegment <byte> PreRender(OutputFrame frame)
{
const int pxLen = 22;
var canvasWidth = _canvasSize.Width;
var canvasHeight = _canvasSize.Height;
using (var ms = new MemoryStream(pxLen * frame.Pixels.Length))
{
using (var sw = new StreamWriter(ms))
{
sw.NewLine = "\n";
foreach (var pixel in frame.Pixels)
{
uint color = pixel.Color;
var renderX = pixel.X + frame.OffsetX;
var renderY = pixel.Y + frame.OffsetY;
if (renderX < 0 || renderY < 0 || renderX >= canvasWidth || renderY >= canvasHeight)
{
continue;
}
if (color < 0xFF000000)
{
sw.WriteLine($"PX {pixel.X + frame.OffsetX} {pixel.Y + frame.OffsetY} {color & 0x00FFFFFF:X6}{color >> 24:X2}");
}
else
{
sw.Write("PX ");
sw.Write((pixel.X + frame.OffsetX).ToString());
sw.Write(" ");
sw.Write((pixel.Y + frame.OffsetY).ToString());
sw.Write(" ");
sw.WriteLine((color & 0x00FFFFFF).ToString("X6"));
}
}
sw.Flush();
return(new ArraySegment <byte>(ms.GetBuffer(), 0, (int)ms.Length));
}
}
}
