static void Main()
{
using (OpenFileDialog ofd = new OpenFileDialog())
{
if (ofd.ShowDialog() == DialogResult.OK)
{
try
{
APNGLib.APNG png = new APNGLib.APNG();
using (Stream s = File.OpenRead(ofd.FileName))
{
png.Load(s);
}
using (Program prog = new Program(png))
{
prog.Run();
}
}
catch (Exception ex)
{
Console.WriteLine("Error: " + ex.Message);
}
}
}
}
//public static APNG CreateEmpty() {
// return new APNG();
//}
//public static APNG Create(Stream s) {
// APNG apng = new APNG();
// apng.Load(s);
// return apng;
//}
public static void Add(this APNG apngBase, PNG pngFrame, int fps)
{
bool isFirst = apngBase.acTL == null;
if (isFirst)
{
SetupAPNGChunks(apngBase, pngFrame);
}
if (pngFrame.IDATList.Count < 0)
{
return;
}
uint sequenceCount = 0;
if (apngBase.FrameCount == 1)
{
sequenceCount = 1;
}
else if (apngBase.FrameCount > 1)
{
sequenceCount = apngBase.GetFrame(apngBase.FrameCount - 1).fdATs.Last().SequenceNumber + 1;
}
//Debug.WriteLine("sequenceCount:" + sequenceCount + "," + pngFrame.IDATList.Count);
Frame frame = CreateFrame(fps, pngFrame.Height, pngFrame.Width, 0, 0, ref sequenceCount, isFirst, pngFrame.IDATList);
apngBase.AddFrame(frame);
apngBase.acTL.NumFrames = (uint)apngBase.FrameCount;
//apngBase.Validate();
}
//public static void Add(this APNG apngBase, IList<PNG> lstPngFrame) {
// uint sequenceCount = 0;
// for(int i = 0; i < lstPngFrame.Count; ++i) {
// bool isFirst = apngBase.acTL == null;
// if(isFirst) {
// SetupAPNGChunks(apngBase, lstPngFrame[i]);
// }
// Frame frame = CreateFrame(lstPngFrame[i].Height, lstPngFrame[i].Width, 0, 0, ref sequenceCount, true, lstPngFrame[i].IDATList);
// apngBase.AddFrame(frame);
// }
// //apngBase.acTL.NumFrames += (uint)lstPngFrame.Count;
// apngBase.acTL.NumFrames = (uint)apngBase.FrameCount;
// apngBase.Validate();
//}
public static void Save(this APNG apng, string filePath)
{
using (Stream pngStr = apng.ToStream()) {
pngStr.Position = 0;
using (FileStream fs = File.Create(filePath)) {
pngStr.CopyTo(fs);
}
}
}
private static void SetupAPNGChunks(APNG apng, PNG png)
{
apng.IHDR = png.IHDR;
apng.acTL = new acTLChunk()
{
NumPlays = 0
};
foreach (IDATChunk chunk in png.IDATList)
{
apng.IDATList.Add(chunk);
}
apng.IEND = png.IEND;
apng.PLTE = png.PLTE;
apng.tRNS = png.tRNS;
apng.cHRM = png.cHRM;
apng.gAMA = png.gAMA;
apng.iCCP = png.iCCP;
apng.sBIT = png.sBIT;
apng.sRGB = png.sRGB;
foreach (tEXtChunk chunk in png.tEXtList)
{
apng.tEXtList.Add(chunk);
}
foreach (zTXtChunk chunk in png.zTXtList)
{
apng.zTXtList.Add(chunk);
}
foreach (iTXtChunk chunk in png.iTXtList)
{
apng.iTXtList.Add(chunk);
}
apng.bKGD = png.bKGD;
apng.hIST = png.hIST;
apng.pHYs = png.pHYs;
apng.sPLT = png.sPLT;
DateTime dt = DateTime.Now;
apng.tIME = new tIMEChunk()
{
Day = (byte)dt.Day,
Month = (byte)dt.Month,
Year = (ushort)dt.Year,
Hour = (byte)dt.Hour,
Minute = (byte)dt.Minute,
Second = (byte)dt.Second
};
}
public static APNG AssembleAPNG(IList <string> files, bool optimize)
{
if (files.Count < 1)
{
return(null);
}
uint sequenceCount = 0;
APNG apng = new APNG();
PNG first = new PNG();
using (Stream s = File.OpenRead(files.First()))
{
first.Load(s);
}
SetupAPNGChunks(apng, first);
Frame firstFrame = CreateFrame(first.Height, first.Width, 0, 0, ref sequenceCount, true, first.IDATList);
apng.AddFrame(firstFrame);
foreach (string file in files.Skip(1))
{
Point p = new Point(0, 0);
PNG png = new PNG();
using (Stream fileStr = File.OpenRead(file))
{
if (optimize)
{
using (Stream optStr = OptimizeBitmapStream(fileStr, out p))
{
png.Load(optStr);
}
}
else
{
png.Load(fileStr);
}
}
Frame f = CreateFrame(png.Height, png.Width, (uint)p.X, (uint)p.Y, ref sequenceCount, false, png.IDATList);
apng.AddFrame(f);
}
apng.acTL.NumFrames = (uint)apng.FrameCount;
apng.Validate();
return(apng);
}
