private static void ProcessingThread(byte[] gifData, AnimationInfo animationInfo)
{
System.Drawing.Image gifImage = System.Drawing.Image.FromStream(new MemoryStream(gifData));
FrameDimension dimension = new FrameDimension(gifImage.FrameDimensionsList[0]);
int frameCount = gifImage.GetFrameCount(dimension);
animationInfo.frameCount = frameCount;
animationInfo.initialized = true;
animationInfo.frames = new List <FrameInfo>(frameCount);
int firstDelayValue = -1;
var delays = gifImage.GetPropertyItem(20736).Value;
for (int i = 0; i < frameCount; i++)
{
gifImage.SelectActiveFrame(dimension, i);
using (Bitmap bitmap = new Bitmap(gifImage)) {
bitmap.MakeTransparent(System.Drawing.Color.Black);
bitmap.RotateFlip(RotateFlipType.Rotate180FlipX);
BitmapData frame = bitmap.LockBits(new Rectangle(Point.Empty, gifImage.Size), ImageLockMode.ReadOnly, PixelFormat.Format32bppArgb);
FrameInfo currentFrame = new FrameInfo(frame.Width, frame.Height);
Marshal.Copy(frame.Scan0, currentFrame.colors, 0, currentFrame.colors.Length);
int delayPropertyValue = BitConverter.ToInt32(delays, i * 4);
if (firstDelayValue == -1)
{
firstDelayValue = delayPropertyValue;
}
currentFrame.delay = delayPropertyValue * 10;
animationInfo.frames.Add(currentFrame);
}
}
}
public static IEnumerator ProcessAnimationInfo(AnimationInfo animationInfo, Action <Texture2D, Rect[], float[], int, int> callback)
{
int textureSize = AtlasSizeLimit, width = 0, height = 0;
Texture2D texture = null;
Texture2D[] texList = new Texture2D[animationInfo.frameCount];
float[] delays = new float[animationInfo.frameCount];
var lastThrottleTime = Time.realtimeSinceStartup;
for (int i = 0; i < animationInfo.frameCount; i++)
{
if ((animationInfo.frames?.Count ?? 0) <= i)
{
yield return(new WaitUntil(() => { return (animationInfo.frames?.Count ?? 0) > i; }));
lastThrottleTime = Time.realtimeSinceStartup;
}
if (texture == null)
{
textureSize = GetTextureSize(animationInfo, i);
texture = new Texture2D(animationInfo.frames[i].width, animationInfo.frames[i].height);
width = animationInfo.frames[i].width;
height = animationInfo.frames[i].height;
}
FrameInfo currentFrameInfo = animationInfo.frames[i];
delays[i] = currentFrameInfo.delay;
Texture2D frameTexture = new Texture2D(currentFrameInfo.width, currentFrameInfo.height, TextureFormat.BGRA32, false);
frameTexture.wrapMode = TextureWrapMode.Clamp;
try
{
frameTexture.LoadRawTextureData(currentFrameInfo.colors);
}
catch
{
yield break;
}
texList[i] = frameTexture;
// Allow up to .5ms of thread usage for loading this anim
if (Time.realtimeSinceStartup > lastThrottleTime + 0.0005f)
{
yield return(null);
lastThrottleTime = Time.realtimeSinceStartup;
}
}
Rect[] atlas = texture.PackTextures(texList, 2, textureSize, true);
foreach (Texture2D frameTex in texList)
{
GameObject.Destroy(frameTex);
}
callback?.Invoke(texture, atlas, delays, width, height);
}