IPromise <Codec> _loadAsync(FileImage key)
{
var coroutine = Window.instance.startCoroutine(this._loadBytes(key));
return(coroutine.promise.Then(obj => {
if (obj is byte[] bytes)
{
return CodecUtils.getCodec(bytes);
}
return CodecUtils.getCodec(new Image((Texture2D)obj));
}));
}
IPromise <Codec> _loadAsync(AssetBundleImageKey key)
{
var coroutine = Window.instance.startCoroutine(this._loadAssetAsync(key));
return(coroutine.promise.Then(result => {
if (result == null)
{
if (key.bundle == null)
{
throw new Exception($"Unable to find asset \"{key.name}\" from Resources folder");
}
throw new Exception($"Unable to find asset \"{key.name}\" from asset bundle \"{key.bundle}\"");
}
if (result is Texture2D texture)
{
return CodecUtils.getCodec(new Image(texture, isAsset: true, bundle: key.bundle));
}
else if (result is TextAsset text)
{
var bytes = text.bytes;
if (key.bundle == null)
{
Resources.UnloadAsset(text);
}
else
{
key.bundle.Unload(text);
}
return CodecUtils.getCodec(bytes);
}
else
{
throw new Exception($"Unknown type for asset \"{key.name}\": \"{result.GetType()}\"");
}
}));
}
IPromise <Codec> _loadAsync(CachedNetworkImageProvider key)
{
var localPath = SQLiteDBManager.instance.GetCachedFilePath(url: key.url);
//the cached file might be deleted by the OS
if (!File.Exists(path: localPath))
{
localPath = null;
}
var coroutine = localPath != null
? Window.instance.startCoroutine(this._loadFromFile(file : localPath))
: Window.instance.startCoroutine(this._loadFromNetwork(url : key.url));
return(coroutine.promise.Then(obj => {
if (obj is byte[] bytes)
{
return CodecUtils.getCodec(bytes: bytes);
}
return CodecUtils.getCodec(new Image((Texture2D)obj));
}));
}
IPromise <Codec> _loadAsync(MemoryImage key)
{
D.assert(key == this);
return(CodecUtils.getCodec(this.bytes));
}