private IEnumerator ReadAssetBundleFileCoroutine(Stream stream, Action<Byte[], ECAssetBundleHeader> onFinish)
{
if (stream == null)
{ //失败
if (onFinish != null)
onFinish(null, null);
yield break;
}
ECAssetBundleHeader bh = new ECAssetBundleHeader();
bh.Load(stream);
Byte[] fileData = new Byte[stream.Length-stream.Position];
stream.Read(fileData, 0, fileData.Length);
stream.Dispose(); //stream 已经用完了。由于是异步操作，只能由调用者释放
if (onFinish != null)
onFinish(fileData, bh);
}
public static void LoadAssetBundleImmediate(String path, Action<AssetBundle, ECAssetBundleHeader, bool> onFinish)
{
Stream stream = FileLoader.LoadFile(path);
if (stream == null)
{
//Debug.LogError("failed to open asset bundle file: " + path); //在回调里自行处理
}
ECAssetBundleHeader bh = new ECAssetBundleHeader();
bh.Load(stream);
CreateBundleImmediate(stream, bh, onFinish, path);
}
public static void LoadAssetBundleFromSepFile(String path, string depFilePath, Action<AssetBundle, ECAssetBundleHeader, bool> onFinish)
{
ECAssetBundleHeader bh;
using (FileStream fin = File.OpenRead(depFilePath))
{
bh = new ECAssetBundleHeader();
bh.Load(fin);
}
AssetBundle bundle = AssetBundle.CreateFromFile(path);
if (onFinish != null)
onFinish(bundle, bh, true);
}
static bool SaveSepFileToCache(Stream stream, string sepFilePath, string depFilePath, out ECAssetBundleHeader bh)
{
bh = new ECAssetBundleHeader();
bh.Load(stream);
if ((bh.option & ECAssetBundleHeader.BundleOption.SepFile) != 0)
{
int headerLen = (int)stream.Position;
String sepDir = Path.GetDirectoryName(sepFilePath);
Directory.CreateDirectory(sepDir);
stream.Seek(-headerLen, SeekOrigin.Current);
WriteStreamToFile(depFilePath, stream, headerLen);
//保存 assetbundle
WriteStreamToFile(sepFilePath, stream, (int)(stream.Length - stream.Position));
return true;
}
return false;
}
private static IEnumerator LoadAssetBundleCoroutine(Stream stream, Action<AssetBundle, ECAssetBundleHeader, bool> onFinish, String path)
{
ECAssetBundleHeader bh = new ECAssetBundleHeader();
bh.Load(stream);
CreateBundleImmediate(stream, bh, onFinish, path);
yield break;
}
public static void LoadAssetBundleImmediate(String path, Action<AssetBundle, ECAssetBundleHeader, bool> onFinish)
{
Stream stream = LoadFile(path);
if (stream == null)
{
if (onFinish != null)
onFinish(null, null, false);
return;
}
ECAssetBundleHeader bh = new ECAssetBundleHeader();
bh.Load(stream);
CreateBundleImmediate(stream, bh, onFinish, path);
}
public static void LoadAssetBundleFromSepFile(String path, string depFilePath, Action<AssetBundle, ECAssetBundleHeader, bool> onFinish)
{
ECAssetBundleHeader bh;
try
{
using (FileStream fin = File.OpenRead(depFilePath))
{
bh = new ECAssetBundleHeader();
bh.Load(fin);
}
}
catch (IOException e)
{
Debug.LogWarning("LoadAssetBundleFromSepFile failed to read header from " + depFilePath + ": " + e);
if (onFinish != null)
onFinish(null, null, false);
return;
}
catch (System.IO.IsolatedStorage.IsolatedStorageException e)
{
Debug.LogWarning("LoadAssetBundleFromSepFile failed to read header from " + depFilePath + ": " + e);
if (onFinish != null)
onFinish(null, null, false);
return;
}
AssetBundle bundle = AssetBundle.CreateFromFile(path);
if (onFinish != null)
onFinish(bundle, bh, true);
}
