using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
namespace Common.Gif
{
#region Java
#endregion
public class AnimatedGifEncoder
{
protected int width;
protected int height;
protected Color transparent = Color.Empty;
protected int transIndex;
protected int repeat = -1;
protected int delay = 0;
protected bool started = false;
protected Stream fs;
protected Image image;
protected byte[] pixels;
protected byte[] indexedPixels;
protected int colorDepth;
protected byte[] colorTab;
protected bool[] usedEntry = new bool[256];
protected int palSize = 7;
protected int dispose = -1;
protected bool closeStream = false;
protected bool firstFrame = true;
protected bool sizeSet = false;
protected int sample = 10;
public void SetDelay(int ms)
{
delay = (int)Math.Round(ms / 10.0f);
}
public void SetDispose(int code)
{
if (code >= 0)
{
dispose = code;
}
}
public void SetRepeat(int iter)
{
if (iter >= 0)
{
repeat = iter;
}
}
public void SetTransparent(Color c)
{
transparent = c;
}
public bool AddFrame(Image im)
{
if ((im == null) || !started)
{
return false;
}
bool ok = true;
try
{
if (!sizeSet)
{
SetSize(im.Width, im.Height);
}
image = im;
GetImagePixels();
AnalyzePixels();
if (firstFrame)
{
WriteLSD();
WritePalette();
if (repeat >= 0)
{
WriteNetscapeExt();
}
}
WriteGraphicCtrlExt();
WriteImageDesc();
if (!firstFrame)
{
WritePalette();
}
WritePixels();
firstFrame = false;
}
catch (IOException e)
{
ok = false;
}
return ok;
}
public bool Finish()
{
if (!started) return false;
bool ok = true;
started = false;
try
{
fs.WriteByte(0x3b);
fs.Flush();
if (closeStream)
{
fs.Close();
}
}
catch (IOException e)
{
ok = false;
}
transIndex = 0;
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