public bool SaveAsGif(AnimationItem aniItem, string fileName, ImageHandlerConfig config, bool options)
{
var rec = new AnimationRecoder(this.GraphicsDevice);
rec.Items.Add(aniItem);
int length = rec.GetMaxLength();
int delay = Math.Max(10, config.MinDelay);
var timeline = rec.GetGifTimeLine(delay, 655350);
// calc available canvas area
rec.ResetAll();
Microsoft.Xna.Framework.Rectangle bounds = aniItem.Measure();
if (length > 0)
{
IEnumerable <int> delays = timeline?.Take(timeline.Length - 1)
?? Enumerable.Range(0, (int)Math.Ceiling(1.0 * length / delay) - 1);
foreach (var frameDelay in delays)
{
rec.Update(TimeSpan.FromMilliseconds(frameDelay));
var rect = aniItem.Measure();
bounds = Microsoft.Xna.Framework.Rectangle.Union(bounds, rect);
}
}
bounds.Offset(aniItem.Position);
// customize clip/scale options
AnimationClipOptions clipOptions = new AnimationClipOptions()
{
StartTime = 0,
StopTime = length,
Left = bounds.Left,
Top = bounds.Top,
Right = bounds.Right,
Bottom = bounds.Bottom,
OutputWidth = bounds.Width,
OutputHeight = bounds.Height,
};
if (options)
{
var frmOptions = new FrmGifClipOptions()
{
ClipOptions = clipOptions,
ClipOptionsNew = clipOptions,
};
if (frmOptions.ShowDialog() == DialogResult.OK)
{
var clipOptionsNew = frmOptions.ClipOptionsNew;
clipOptions.StartTime = clipOptionsNew.StartTime ?? clipOptions.StartTime;
clipOptions.StopTime = clipOptionsNew.StopTime ?? clipOptions.StopTime;
clipOptions.Left = clipOptionsNew.Left ?? clipOptions.Left;
clipOptions.Top = clipOptionsNew.Top ?? clipOptions.Top;
clipOptions.Right = clipOptionsNew.Right ?? clipOptions.Right;
clipOptions.Bottom = clipOptionsNew.Bottom ?? clipOptions.Bottom;
clipOptions.OutputWidth = clipOptionsNew.OutputWidth ?? (clipOptions.Right - clipOptions.Left);
clipOptions.OutputHeight = clipOptionsNew.OutputHeight ?? (clipOptions.Bottom - clipOptions.Top);
}
else
{
return(false);
}
}
// validate params
bounds = new Rectangle(
clipOptions.Left.Value,
clipOptions.Top.Value,
clipOptions.Right.Value - clipOptions.Left.Value,
clipOptions.Bottom.Value - clipOptions.Top.Value
);
var targetSize = new Point(clipOptions.OutputWidth.Value, clipOptions.OutputHeight.Value);
var startTime = clipOptions.StartTime.Value;
var stopTime = clipOptions.StopTime.Value;
if (bounds.Width <= 0 || bounds.Height <= 0 ||
targetSize.X <= 0 || targetSize.Y <= 0 ||
startTime < 0 || stopTime > length ||
stopTime - startTime < 0)
{
return(false);
}
length = stopTime - startTime;
// create output dir
string framesDirName = Path.Combine(Path.GetDirectoryName(fileName), Path.GetFileNameWithoutExtension(fileName) + ".frames");
if (config.SavePngFramesEnabled && !Directory.Exists(framesDirName))
{
Directory.CreateDirectory(framesDirName);
}
// pre-render
rec.ResetAll();
switch (config.BackgroundType.Value)
{
default:
case ImageBackgroundType.Transparent:
rec.BackgroundColor = Color.TransparentBlack;
break;
case ImageBackgroundType.Color:
rec.BackgroundColor = System.Drawing.Color.FromArgb(255, config.BackgroundColor.Value).ToXnaColor();
break;
case ImageBackgroundType.Mosaic:
rec.BackgroundImage = MonogameUtils.CreateMosaic(GraphicsDevice,
config.MosaicInfo.Color0.ToXnaColor(),
config.MosaicInfo.Color1.ToXnaColor(),
Math.Max(1, config.MosaicInfo.BlockSize));
break;
}
// select encoder
GifEncoder enc = AnimateEncoderFactory.CreateEncoder(fileName, targetSize.X, targetSize.Y, config);
var encParams = AnimateEncoderFactory.GetEncoderParams(config.GifEncoder.Value);
// pipeline functions
IEnumerable <Tuple <byte[], int> > MergeFrames(IEnumerable <Tuple <byte[], int> > frames)
{
byte[] prevFrame = null;
int prevDelay = 0;
foreach (var frame in frames)
{
byte[] currentFrame = frame.Item1;
int currentDelay = frame.Item2;
if (prevFrame == null)
{
prevFrame = currentFrame;
prevDelay = currentDelay;
}
else if (memcmp(prevFrame, currentFrame, (IntPtr)prevFrame.Length) == 0)
{
prevDelay += currentDelay;
}
else
{
yield return(Tuple.Create(prevFrame, prevDelay));
prevFrame = currentFrame;
prevDelay = currentDelay;
}
}
if (prevFrame != null)
{
yield return(Tuple.Create(prevFrame, prevDelay));
}
}
IEnumerable <int> RenderDelay()
{
int t = 0;
while (t < length)
{
int frameDelay = Math.Min(length - t, delay);
t += frameDelay;
yield return(frameDelay);
}
}
IEnumerable <int> ClipTimeline(int[] _timeline)
{
int t = 0;
for (int i = 0; i < timeline.Length; i++)
{
var frameDelay = timeline[i];
if (t < startTime)
{
if (t + frameDelay > startTime)
{
frameDelay = t + frameDelay - startTime;
t = startTime;
}
else
{
t += frameDelay;
continue;
}
}
if (t + frameDelay < stopTime)
{
yield return(frameDelay);
t += frameDelay;
}
else
{
frameDelay = stopTime - t;
yield return(frameDelay);
break;
}
}
}
int prevTime = 0;
async Task <int> ApplyFrame(byte[] frameData, int frameDelay)
{
byte[] gifData = null;
if (!encParams.SupportAlphaChannel && config.BackgroundType.Value == ImageBackgroundType.Transparent)
{
using (var rt2 = rec.GetGifTexture(config.BackgroundColor.Value.ToXnaColor(), config.MinMixedAlpha))
{
if (gifData == null)
{
gifData = new byte[frameData.Length];
}
rt2.GetData(gifData);
}
}
else
{
gifData = frameData;
}
var tasks = new List <Task>();
// save each frame as png
if (config.SavePngFramesEnabled)
{
tasks.Add(Task.Run(() =>
{
string pngFileName = Path.Combine(framesDirName, $"{prevTime}_{prevTime + frameDelay}.png");
unsafe
{
fixed(byte *pFrameBuffer = frameData)
{
using (var bmp = new System.Drawing.Bitmap(targetSize.X, targetSize.Y, targetSize.X * 4, System.Drawing.Imaging.PixelFormat.Format32bppArgb, new IntPtr(pFrameBuffer)))
{
bmp.Save(pngFileName, System.Drawing.Imaging.ImageFormat.Png);
}
}
}
}));
}
// append frame data to gif stream
tasks.Add(Task.Run(() =>
{
// TODO: only for gif here?
frameDelay = Math.Max(10, (int)(Math.Round(frameDelay / 10.0) * 10));
unsafe
{
fixed(byte *pGifBuffer = gifData)
{
enc.AppendFrame(new IntPtr(pGifBuffer), frameDelay);
}
}
}));
await Task.WhenAll(tasks);
prevTime += frameDelay;
return(prevTime);
}
async Task RenderJob(IProgressDialogContext context, CancellationToken cancellationToken)
{
bool isCompareAndMergeFrames = timeline == null;
// build pipeline
IEnumerable <int> delayEnumerator = timeline == null?RenderDelay() : ClipTimeline(timeline);
var step1 = delayEnumerator.TakeWhile(_ => !cancellationToken.IsCancellationRequested);
var frameRenderEnumerator = step1.Select(frameDelay =>
{
rec.Draw();
rec.Update(TimeSpan.FromMilliseconds(frameDelay));
return(frameDelay);
});
var step2 = frameRenderEnumerator.TakeWhile(_ => !cancellationToken.IsCancellationRequested);
var getFrameData = step2.Select(frameDelay =>
{
using (var t2d = rec.GetPngTexture())
{
byte[] frameData = new byte[t2d.Width * t2d.Height * 4];
t2d.GetData(frameData);
return(Tuple.Create(frameData, frameDelay));
}
});
var step3 = getFrameData.TakeWhile(_ => !cancellationToken.IsCancellationRequested);
if (isCompareAndMergeFrames)
{
var mergedFrameData = MergeFrames(step3);
step3 = mergedFrameData.TakeWhile(_ => !cancellationToken.IsCancellationRequested);
}
var step4 = step3.Select(item => ApplyFrame(item.Item1, item.Item2));
// run pipeline
bool isPlaying = this.IsPlaying;
try
{
this.IsPlaying = false;
rec.Begin(bounds, targetSize);
if (startTime > 0)
{
rec.Update(TimeSpan.FromMilliseconds(startTime));
}
context.ProgressMin = 0;
context.ProgressMax = length;
foreach (var task in step4)
{
int currentTime = await task;
context.Progress = currentTime;
}
}
catch (Exception ex)
{
context.Message = $"Error: {ex.Message}";
throw;
}
finally
{
rec.End();
enc.Dispose();
this.IsPlaying = isPlaying;
}
}
var dialogResult = ProgressDialog.Show(this.FindForm(), "Exporting...", "Save animation file...", true, false, RenderJob);
return(dialogResult == DialogResult.OK);
}
public void SaveAsGif(AnimationItem aniItem, string fileName, ImageHandlerConfig config)
{
//保存动画 天坑代码
var rec = new AnimationRecoder(this.GraphicsDevice);
rec.Items.Add(aniItem);
int length = rec.GetMaxLength();
//rec.GetGifTimeLine(30); 放弃获取时间轴
//预判大小阶段
rec.ResetAll();
Microsoft.Xna.Framework.Rectangle?bounds = null;
int delay = Math.Max(10, config.MinDelay);
for (int d = 0; d <= length; d += delay)
{
rec.Update(TimeSpan.FromMilliseconds(delay));
var rect = aniItem.Measure();
rect.Offset(aniItem.Position);
bounds = (bounds == null || bounds.Value.IsEmpty) ? rect
: Microsoft.Xna.Framework.Rectangle.Union(rect, bounds.Value);
}
//绘制阶段
rec.ResetAll();
switch (config.BackgroundType.Value)
{
default:
case ImageBackgroundType.Transparent:
rec.BackgroundColor = Color.TransparentBlack;
break;
case ImageBackgroundType.Color:
rec.BackgroundColor = System.Drawing.Color.FromArgb(255, config.BackgroundColor.Value).ToXnaColor();
break;
case ImageBackgroundType.Mosaic:
rec.BackgroundImage = MonogameUtils.CreateMosaic(GraphicsDevice,
config.MosaicInfo.Color0.ToXnaColor(),
config.MosaicInfo.Color1.ToXnaColor(),
Math.Max(1, config.MosaicInfo.BlockSize));
break;
}
byte[] buffer = new byte[bounds.Value.Width * bounds.Value.Height * 4];
byte[] bufferPrev = null, bufferGif = null;
int gifTime = 0, prevTime = 0;
string dirName = Path.Combine(Path.GetDirectoryName(fileName),
Path.GetFileNameWithoutExtension(fileName) + ".frames");
if (config.SavePngFramesEnabled && !Directory.Exists(dirName))
{
Directory.CreateDirectory(dirName);
}
//选择encoder
GifEncoder enc = AnimateEncoderFactory.CreateEncoder(fileName, bounds.Value.Width, bounds.Value.Height, config);
var encParams = AnimateEncoderFactory.GetEncoderParams(config.GifEncoder.Value);
Action <int> writeFrame = (curTime) =>
{
unsafe
{
string pngFileName = Path.Combine(dirName, prevTime + ".png");
fixed(byte *pBuffer = bufferPrev, pBufferGif = bufferGif)
{
using (var bmp = new System.Drawing.Bitmap(bounds.Value.Width, bounds.Value.Height, bounds.Value.Width * 4, System.Drawing.Imaging.PixelFormat.Format32bppArgb, new IntPtr(pBuffer)))
{
var tasks = new List <Task>();
if (config.SavePngFramesEnabled) //保存单帧图像
{
tasks.Add(Task.Factory.StartNew(
() => bmp.Save(pngFileName, System.Drawing.Imaging.ImageFormat.Png)
));
}
//保存gif帧
int frameDelay = curTime - gifTime;
frameDelay = (int)(Math.Round(frameDelay / 10.0) * 10);
if (frameDelay > 0)
{
gifTime += frameDelay;
var pData = new IntPtr(pBufferGif);
tasks.Add(Task.Factory.StartNew(() =>
enc.AppendFrame(pData, frameDelay)
));
}
Task.WaitAll(tasks.ToArray());
}
}
}
};
rec.Begin(bounds.Value);
//0长度补丁
for (int d = 0; d <= length; d += delay, rec.Update(TimeSpan.FromMilliseconds(delay)))
{
rec.Draw();
using (var rt = rec.GetPngTexture())
{
rt.GetData(buffer);
//比较上一帧
if (bufferPrev != null)
{
//跳过当前帧
if (memcmp(buffer, bufferPrev, (IntPtr)buffer.Length) == 0)
{
continue;
}
else //计算时间 输出
{
writeFrame(d);
}
}
else
{
bufferPrev = new byte[bounds.Value.Width * bounds.Value.Height * 4];
}
//交换缓冲区
var temp = buffer;
buffer = bufferPrev;
bufferPrev = temp;
prevTime = d;
//透明 额外导出一份gif
if (!encParams.SupportAlphaChannel && config.BackgroundType.Value == ImageBackgroundType.Transparent)
{
using (var rt2 = rec.GetGifTexture(config.BackgroundColor.Value.ToXnaColor(), config.MinMixedAlpha))
{
if (bufferGif == null)
{
bufferGif = new byte[bufferPrev.Length];
}
rt2.GetData(bufferGif);
}
}
else
{
bufferGif = bufferPrev;
}
}
}
//输出最后一帧
if (prevTime < length)
{
writeFrame(length);
}
else if (length <= 0) //0长度补丁
{
writeFrame(100);
}
//保存动画长度
if (config.SavePngFramesEnabled)
{
File.WriteAllText(Path.Combine(dirName, "delay.txt"), length.ToString());
}
rec.End();
enc.Dispose();
}
