public IEnumerator LoadAllDependenciesAsync(string fname, int ttl)
{
if (manifest == null)
{
LogUtil.Error("manifest == null");
yield break;
}
string dpname = fname.Replace("\\", "/");
// Get dependecies from the AssetBundleManifest object..
string[] dependencies = manifest.GetAllDependencies(dpname);
var length = dependencies.Length;
if (length == 0)
{
yield break;
}
// Record and load all dependencies.
var count = (float)length;
for (int i = 0; i < length; i++)
{
var depend = RemapVariantName(dependencies[i]);
LogUtil.Trace(fname + ":dependancy:" + depend);
var iter = BundleManager.LoadAsync(fname, depend, ttl);
while (iter.MoveNext())
{
yield return(null);
}
}
}
// NOTE: this can not load custom encrypted asset bundles
public static WWW CreateBundleFromWWWAsync(string uri, int version, uint crc = 0)
{
uri = fixWWWUri(uri);
LogUtil.Trace("BundleEncoder: LoadFromCacheOrDownload " + uri);
return(WWW.LoadFromCacheOrDownload(uri, version, crc));
}
public static void GetTTLSettings(string path, ref int ttl)
{
if (ttlSettings.TryGetValue(path, out ttl))
{
LogUtil.Trace("GetTTLSettings:" + path + "=" + ttl.ToString());
return;
}
if (noTTLSettings.ContainsKey(path))
{
return;
}
foreach (var pair in ttlPatternSettings)
{
var key = pair.Key;
if (path.Contains(key))
{
ttl = pair.Value;
SetTTLSettings(path, ttl);
LogUtil.Trace("GetTTLSettingsPattern:" + path + "=" + ttl.ToString());
return;
}
}
LogUtil.Trace("[GetTTLSettings]" + path + " has no ttl settings");
noTTLSettings[path] = true;
}
/* ========================== Load From WWW ========================== */
// NOTE: this can not load custom encrypted asset bundles
public static AssetBundle CreateBundleFromWWW(string uri, int version, uint crc = 0)
{
uri = fixWWWUri(uri);
LogUtil.Trace("BundleEncoder: LoadFromCacheOrDownload (sync) " + uri);
var www = WWW.LoadFromCacheOrDownload(uri, version, crc);
// busy wait
while (!www.isDone)
{
// LogUtil.Debug("BundleEncoder: LoadFromCacheOrDownload (sync) busy waiting...");
if (www.error != null && www.error != "")
{
LogUtil.Error("BundleEncoder: CreateBundleFromWWW not done and failed: " + www.error);
return(null);
}
}
;
// LogUtil.Debug("BundleEncoder: LoadFromCacheOrDownload (sync) done.");
if (www.error == null || www.error == "")
{
return(www.assetBundle);
}
else
{
LogUtil.Error("BundleEncoder: CreateBundleFromWWW failed: " + www.error);
return(null);
}
}
// Load an AssetBundle, without loading its dependencies
public static AssetBundleRef Load(string uri, int ttl)
{
string keyName = GetBundleKey(uri);
AssetBundleRef abRef;
GetTTLSettings(uri, ref ttl);
if (TryGetRefreshedBundleRef(keyName, ttl, out abRef))
{
loadingBundles.Remove(keyName);
return(abRef);
}
else
{
LogUtil.Trace("BundleManager: Load " + uri);
AssetBundle bundle = null;
if (loadWithWWW)
{
bundle = BundleEncoder.CreateBundleFromWWW(uri, wwwVersion, wwwCrc);
}
else
{
bundle = BundleEncoder.CreateBundleFromFile(uri);
}
if (bundle != null)
{
abRef = new AssetBundleRef(uri, ttl);
abRef.AssetBundle = bundle;
dictAssetBundleRefs.Add(keyName, abRef);
listAssetBundleUris.Add(uri);
loadingBundles.Remove(keyName);
AddLoadHistory(uri, true);
return(abRef);
}
else
{
if (TryGetRefreshedBundleRef(keyName, ttl, out abRef))
{
loadingBundles.Remove(keyName);
return(abRef);
}
LogUtil.Error("BundleManager: creating bundle from uri failed! " + uri);
}
}
return(null);
}
public static void UnloadDeadBundles(bool unloadAllLoadedObjects, int iterCount)
{
tempUriList.Clear();
int i = 0;
while (i < iterCount && curUnloadIndex < listAssetBundleUris.Count)
{
var keyName = GetBundleKey(listAssetBundleUris[curUnloadIndex]);
AssetBundleRef abRef;
if (dictAssetBundleRefs.TryGetValue(keyName, out abRef))
{
if (abRef.Dead)
{
tempUriList.Add(abRef.uri);
}
}
else
{
LogUtil.Error("BundleManager: iterate invalid keyName " + keyName);
}
++i;
++curUnloadIndex;
if (curUnloadIndex >= listAssetBundleUris.Count)
{
curUnloadIndex = 0;
}
}
if (curUnloadIndex >= listAssetBundleUris.Count)
{
curUnloadIndex = 0;
}
for (i = 0; i < tempUriList.Count; ++i)
{
var uri = tempUriList[i];
LogUtil.Trace("BundleManager: Unload dead bundle " + uri);
Unload(uri, unloadAllLoadedObjects);
}
tempUriList.Clear();
}
public void UnloadAsset(string assetPath)
{
if (assetRequests == null)
{
return;
}
AssetBundleRequest req = null;
if (assetRequests.TryGetValue(assetPath, out req))
{
if (req.isDone)
{
LogUtil.Trace("AssetBundleRef UnloadAsset:" + assetPath);
assetRequests.Remove(assetPath);
Resources.UnloadAsset(req.asset);
}
}
}
public static Encoding GetEncodingOfData(byte[] data)
{
// headers:
// [0x55 0x6e] unity standard bundle headers
// [0x00 0x00] for non-encrypt
// [0x00 0x01] for rc4 encryption
// [0x00 0x02] for aes_256_cbc encryption
// [0x00 0x03] for chacha20 encryption
if (data.Length < 2)
{
LogUtil.Error("GetEncodingOfData data length is " + data.Length);
return(Encoding.Unknown);
}
LogUtil.Trace("GetEncodingOfData 1: " + data[0] + " 2: " + data[1]);
if (data[0] == 0x55 && data[1] == 0x6e)
{
return(Encoding.Unity);
}
if (data[0] == 0x00 && data[1] == 0x00)
{
return(Encoding.Plain);
}
else if (data[0] == 0x00 && data[1] == 0x01)
{
return(Encoding.Rc4);
}
else if (data[0] == 0x00 && data[1] == 0x02)
{
return(Encoding.AES_256_CBC);
}
else if (data[0] == 0x00 && data[1] == 0x03)
{
return(Encoding.Chacha20);
}
else
{
return(Encoding.Unknown);
}
}
public void LoadAllDependencies(string fname, int ttl)
{
if (manifest == null)
{
LogUtil.Error("manifest==null");
return;
}
#if PROFILE_FILE
Profiler.BeginSample("BundleDependencies.LoadAllDependencies");
#endif
string dpname = fname.Replace("\\", "/");
// int idx = dpname.LastIndexOf("/") + 1;
// dpname = dpname.Substring(idx, dpname.Length - idx);
// Get dependecies from the AssetBundleManifest object..
string[] dependencies = manifest.GetAllDependencies(dpname);
var length = dependencies.Length;
if (length == 0)
{
return;
}
// Record and load all dependencies.
for (int i = 0; i < length; i++)
{
var depend = RemapVariantName(dependencies[i]);
LogUtil.Trace(fname + ":dependancy:" + depend);
var bundle = BundleManager.Load(depend, ttl);
if (bundle != null)
{
bundle.AddParentBundle(fname);
}
}
#if PROFILE_FILE
Profiler.EndSample();
#endif
}
// Unload an AssetBundle
public static void Unload(string uri, bool unloadAllLoadedObjects)
{
string keyName = GetBundleKey(uri);
AssetBundleRef abRef;
if (dictAssetBundleRefs.TryGetValue(keyName, out abRef))
{
LogUtil.Trace("BundleManager: Unload " + uri);
if (!abRef.CanUnload())
{
LogUtil.Trace("loading asset async, cannot be unloaded " + uri);
return;
}
abRef.assetBundle.Unload(unloadAllLoadedObjects);
abRef.assetBundle = null;
abRef.CleanUp();
dictAssetBundleRefs.Remove(keyName);
listAssetBundleUris.Remove(uri);
AddLoadHistory(uri, false);
}
}
/* ========================== Load From File ========================== */
public static AssetBundle CreateBundleFromFile(string path)
{
#if PROFILE_FILE
Profiler.BeginSample("BundleEncoder.CreateBundleFromFile");
#endif
AssetBundle bundle = null;
#if LOAD_FROM_FILE
try
{
Encoding enc = GetEncodingOfFile(path);
LogUtil.Trace("CreateBundleFromFile: " + path + " enc=" + enc);
if (enc == Encoding.Unity)
{
string fullpath = FileUtils.PrepareBundleFile(path);
bundle = AssetBundle.LoadFromFile(fullpath);
#if PROFILE_FILE
Profiler.EndSample();
#endif
return(bundle);
}
LogUtil.Trace("CreateBundleFromFile: fallback to LoadFromMemory for this encoding");
}
catch (Exception e)
{
// just fallback to LoadFromMemory
LogUtil.Error("CreateBundleFromFile: fallback to LoadFromMemory because of Error " + e);
}
#endif // LOAD_FROM_FILE
byte[] data = DecodeBundleFile(path);
bundle = AssetBundle.LoadFromMemory(data);
#if PROFILE_FILE
Profiler.EndSample();
#endif
return(bundle);
}
public static void UnloadDyingBundles(double period, bool unloadAllLoadedObjects)
{
tempUriList.Clear();
var now = Time.realtimeSinceStartup;
foreach (KeyValuePair <string, AssetBundleRef> pair in dictAssetBundleRefs)
{
var abRef = pair.Value;
if (abRef.EndTime - now < period)
{
tempUriList.Add(abRef.uri);
}
}
for (var i = 0; i < tempUriList.Count; ++i)
{
var uri = tempUriList[i];
LogUtil.Trace("BundleManager: Unload dying bundle " + uri + " period=" + period);
Unload(uri, unloadAllLoadedObjects);
}
tempUriList.Clear();
}
internal static IEnumerator LoadAsync(string parentBundlePath, string uri, int ttl)
{
string keyName = GetBundleKey(uri);
GetTTLSettings(uri, ref ttl);
AssetBundleRef abRef;
while (loadingBundles.Contains(keyName))
{
LogUtil.Trace("BundleManager: is already Loading " + keyName);
yield return(null);
}
if (TryGetRefreshedBundleRef(keyName, ttl, out abRef))
{
loadingBundles.Remove(keyName);
abRef.AddParentBundle(parentBundlePath);
yield break;
}
else
{
loadingBundles.Add(keyName);
LogUtil.Trace("BundleManager: LoadAsyncWithNoCallback " + uri);
AssetBundle bundle = null;
if (loadWithWWW)
{
var www = BundleEncoder.CreateBundleFromWWWAsync(uri, wwwVersion, wwwCrc);
while (!www.isDone)
{
yield return(null);
}
if (www.error == null || www.error == "")
{
bundle = www.assetBundle;
}
else
{
LogUtil.Error("BundleManager: creating bundle from WWW failed: " + www.error);
}
}
else
{
var req = BundleEncoder.CreateBundleFromFileAsync(uri);
while (!req.isDone && !TryGetRefreshedBundleRef(keyName, ttl, out abRef))
{
yield return(null);
}
if (req.isDone)
{
bundle = req.assetBundle;
}
}
if (bundle != null)
{
abRef = new AssetBundleRef(uri, ttl);
abRef.AssetBundle = bundle;
dictAssetBundleRefs.Add(keyName, abRef);
listAssetBundleUris.Add(uri);
AddLoadHistory(uri, true);
loadingBundles.Remove(keyName);
abRef.AddParentBundle(parentBundlePath);
}
else
{
if (TryGetRefreshedBundleRef(keyName, ttl, out abRef))
{
loadingBundles.Remove(keyName);
abRef.AddParentBundle(parentBundlePath);
}
else
{
LogUtil.Error("BundleManager: creating bundle from uri failed! " + uri);
}
}
loadingBundles.Remove(keyName);
}
}