public void GetAnimator(ObjectAnimationUsingKeyFrames animator, string path)
{
var decoder = new APNGBitmap(path);
if (decoder.IsSimplePNG)
{
animator.KeyFrames.Add(
new DiscreteObjectKeyFrame(BitmapFrame.Create(new Uri(path)), TimeSpan.Zero));
animator.Duration = Duration.Forever;
return;
}
var clock = TimeSpan.Zero;
var header = decoder.IHDRChunk;
Frame prevFrame = null;
BitmapSource prevRenderedFrame = null;
foreach (var rawFrame in decoder.Frames)
{
var frame = MakeFrame(header, rawFrame, prevFrame, prevRenderedFrame);
prevFrame = rawFrame;
prevRenderedFrame = frame;
var delay = TimeSpan.FromSeconds(
(double)rawFrame.fcTLChunk.DelayNum /
(rawFrame.fcTLChunk.DelayDen == 0 ? 100 : rawFrame.fcTLChunk.DelayDen));
animator.KeyFrames.Add(new DiscreteObjectKeyFrame(frame, clock));
clock += delay;
}
animator.Duration = clock;
animator.RepeatBehavior = RepeatBehavior.Forever;
}
public APNGAnimationProvider(string path, Dispatcher uiDispatcher) : base(path, uiDispatcher)
{
var decoder = new APNGBitmap(path);
if (decoder.IsSimplePNG)
{
_imageMagickProvider = new ImageMagickProvider(path, uiDispatcher);
return;
}
_frames = new List <FrameInfo>(decoder.Frames.Length);
_renderedFrames = new List <BitmapSource>(decoder.Frames.Length);
Enumerable.Repeat(0, decoder.Frames.Length).ForEach(_ => _renderedFrames.Add(null));
Animator = new Int32AnimationUsingKeyFrames {
RepeatBehavior = RepeatBehavior.Forever
};
var wallclock = TimeSpan.Zero;
for (var i = 0; i < decoder.Frames.Length; i++)
{
var frame = decoder.Frames[i];
_frames.Add(new FrameInfo(decoder.IHDRChunk, frame));
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(i, KeyTime.FromTimeSpan(wallclock)));
wallclock += _frames[i].Delay;
}
}
public APngProvider(Uri path, MetaProvider meta) : base(path, meta)
{
if (!IsAnimatedPng(path.LocalPath))
{
_nativeImageProvider = new NativeProvider(path, meta);
Animator = _nativeImageProvider.Animator;
return;
}
var decoder = new APNGBitmap(path.LocalPath);
_baseFrame = decoder.DefaultImage;
_frames = new List <FrameInfo>(decoder.Frames.Length);
_renderedFrames = new List <BitmapSource>(decoder.Frames.Length);
Enumerable.Repeat(0, decoder.Frames.Length).ForEach(_ => _renderedFrames.Add(null));
Animator = new Int32AnimationUsingKeyFrames {
RepeatBehavior = RepeatBehavior.Forever
};
var wallclock = TimeSpan.Zero;
for (var i = 0; i < decoder.Frames.Length; i++)
{
var frame = decoder.Frames[i];
_frames.Add(new FrameInfo(decoder.IHDRChunk, frame));
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(i, KeyTime.FromTimeSpan(wallclock)));
wallclock += _frames[i].Delay;
}
}
public void GetAnimator(ObjectAnimationUsingKeyFrames animator, string path)
{
var decoder = new APNGBitmap(path);
if (decoder.IsSimplePNG)
{
new ImageMagickProvider().GetAnimator(animator, path);
return;
}
var clock = TimeSpan.Zero;
var header = decoder.IHDRChunk;
Frame currentFrame = null;
BitmapSource currentRenderedFrame = null;
BitmapSource previousStateRenderedFrame = null;
foreach (var nextFrame in decoder.Frames)
{
var nextRenderedFrame = MakeNextFrame(header, nextFrame, currentFrame, currentRenderedFrame,
previousStateRenderedFrame);
var delay = TimeSpan.FromSeconds(
(double)nextFrame.fcTLChunk.DelayNum /
(nextFrame.fcTLChunk.DelayDen == 0 ? 100 : nextFrame.fcTLChunk.DelayDen));
animator.KeyFrames.Add(new DiscreteObjectKeyFrame(nextRenderedFrame, clock));
clock += delay;
// the "previous state" of a "DisposeOpPrevious" frame is its previous frame, so we do not record it
if (currentFrame != null && currentFrame.fcTLChunk.DisposeOp != DisposeOps.APNGDisposeOpPrevious)
{
previousStateRenderedFrame = currentRenderedFrame;
}
currentRenderedFrame = nextRenderedFrame;
currentFrame = nextFrame;
}
animator.Duration = clock;
animator.RepeatBehavior = RepeatBehavior.Forever;
}
