public static void PngToGIF(string png, string info, string gif)
{
var reader = new BinaryReader(new FileStream(info, FileMode.Open));
reader.ReadInt16(); // width
reader.ReadInt16(); // height
int rows = reader.ReadInt16();
int lines = reader.ReadInt16();
if (rows == 1 & lines == 1)
{
return;
}
int rect_width = reader.ReadInt16();
int rect_height = reader.ReadInt16();
reader.Close();
var gif_creator = new AnimatedGifCreator(gif, 115, 0);
var source = new Bitmap(png);
for (int i = 0; i < lines; i++)
{
for (int j = 0; j < rows; j++)
{
var frame_rect = new Rectangle(j * rect_width, i * rect_height, rect_width, rect_height);
var frame = CropImage(source, frame_rect);
gif_creator.AddFrame(frame);
}
}
gif_creator.Dispose();
}
private void MakeGIF(string saveTo, Action <int, int> callback)
{
var files = Directory.GetFiles(ScreenRecordOption.CachePath);
// 保存每个文件流，以方便在后面关闭文件
var temp = new List <FileStream>(files.Length);
int qualityValue = 3;
this.InvokeMethod(() =>
{
qualityValue = tbQuality.Value;
});
GifQuality quality;
switch (qualityValue)
{
case 1:
quality = GifQuality.Grayscale;
break;
case 2:
quality = GifQuality.Bit4;
break;
case 3:
quality = GifQuality.Bit8;
break;
default:
quality = GifQuality.Default;
break;
}
var gifStream = new FileStream(saveTo, FileMode.Create);
var gif = new AnimatedGifCreator(gifStream,
1000 / ScreenRecordOption.Fps, ScreenRecordOption.RepeatCount);
for (int i = 0; i < files.Length; i++)
{
callback(i, files.Length);
var stream = LoadImage(files[i]);
temp.Add(stream);
gif.AddFrame(Image.FromStream(stream), quality: quality);
}
callback(files.Length, files.Length);
gif.Dispose();
foreach (var item in temp)
{
item.Close();
item.Dispose();
}
temp.Clear();
GC.Collect();
}
public override void Finish()
{
gif.Dispose();
}