Exemplo n.º 1
0
 public object ReadContent(IContentManager readerManager, ref ContentReaderParameters parameters)
 {
     parameters.KeepStreamOpen = false;
     var image = Image.Load(parameters.Stream);
     if (image != null)
         image.Name = parameters.AssetName;
     return image;
 }
Exemplo n.º 2
0
        private object LoadAssetWithDynamicContentReader <T>(string assetName, Stream stream, object options)
        {
            object result;
            var    type = typeof(T);

            var parameters = new ContentReaderParameters
            {
                AssetName = assetName,
                AssetType = type,
                Stream    = stream,
                Options   = options
            };

            try
            {
                IContentReader contentReader;
                lock (registeredContentReaders)
                {
                    if (!registeredContentReaders.TryGetValue(type, out contentReader))
                    {
                        // Use registered factories to handle a type
                        lock (registeredContentReaderFactories)
                        {
                            foreach (var factory in registeredContentReaderFactories)
                            {
                                contentReader = factory.TryCreate(type);
                                if (contentReader != null)
                                {
                                    registeredContentReaders.Add(type, contentReader);
                                    break;
                                }
                            }
                        }

                        // Else tries to get a ContentReaderAttribute to resolve the type
                        if (contentReader == null)
                        {
#if WIN8METRO
                            var contentReaderAttribute = Utilities.GetCustomAttribute <ContentReaderAttribute>(type.GetTypeInfo(), true);
#else
                            var contentReaderAttribute = Utilities.GetCustomAttribute <ContentReaderAttribute>(type, true);
#endif

                            if (contentReaderAttribute != null)
                            {
                                contentReader = Activator.CreateInstance(contentReaderAttribute.ContentReaderType) as IContentReader;
                                if (contentReader != null)
                                {
                                    Readers.Add(typeof(T), contentReader);
                                }
                            }
                        }
                    }
                }

                if (contentReader == null)
                {
                    throw new NotSupportedException(string.Format("Type [{0}] doesn't provide a ContentReaderAttribute, and there is no registered content reader/factory for it.", type.FullName));
                }

                result = contentReader.ReadContent(this, ref parameters);

                if (result == null)
                {
                    throw new NotSupportedException(string.Format("Registered ContentReader of type [{0}] fails to load content of type [{1}] from file [{2}].", contentReader.GetType(), type.FullName, assetName));
                }
            }
            finally
            {
                // If we don't need to keep the stream open, then we can close it
                // and make sure that we will close the stream even if there is an exception.
                if (!parameters.KeepStreamOpen)
                {
                    stream.Dispose();
                }
            }

            return(result);
        }
Exemplo n.º 3
0
        private object LoadAssetWithDynamicContentReader <T>(string assetName, Stream stream, object options)
        {
            object result = null;

            long startPosition = stream.Position;
            var  parameters    = new ContentReaderParameters()
            {
                AssetName = assetName,
                AssetType = typeof(T),
                Stream    = stream,
                Options   = options
            };

            try
            {
                // Else try to load using a dynamic content reader attribute
#if WIN8METRO
                var contentReaderAttribute = Utilities.GetCustomAttribute <ContentReaderAttribute>(typeof(T).GetTypeInfo(), true);
#else
                var contentReaderAttribute = Utilities.GetCustomAttribute <ContentReaderAttribute>(typeof(T), true);
#endif
                if (contentReaderAttribute != null)
                {
                    IContentReader contentReader = null;


#if WIN8METRO
                    var isReaderValid = typeof(IContentReader).GetTypeInfo().IsAssignableFrom(contentReaderAttribute.ContentReaderType.GetTypeInfo());
#else
                    var isReaderValid = typeof(IContentReader).IsAssignableFrom(contentReaderAttribute.ContentReaderType);
#endif
                    if (!isReaderValid)
                    {
                        throw new NotSupportedException(string.Format("Invalid content reader type [{0}]. Expecting an instance of IContentReader", contentReaderAttribute.ContentReaderType.FullName));
                    }


                    lock (registeredContentReaders)
                    {
                        foreach (var reader in registeredContentReaders)
                        {
                            if (contentReaderAttribute.ContentReaderType == reader.GetType())
                            {
                                contentReader = reader;
                                break;
                            }
                        }

                        if (contentReader == null)
                        {
                            contentReader = (IContentReader)Activator.CreateInstance(contentReaderAttribute.ContentReaderType);

                            // If this content reader has been used successfully, then we can register it.
                            lock (registeredContentReaders)
                            {
                                registeredContentReaders.Add(contentReader);
                            }
                        }
                    }

                    // Rewind position every time we try to load an asset
                    stream.Position = startPosition;
                    result          = contentReader.ReadContent(this, ref parameters);
                    stream.Position = startPosition;
                }
                else
                {
                    // Try to load from registered content readers
                    List <IContentReader> readers;
                    lock (registeredContentReaders)
                    {
                        readers = new List <IContentReader>(registeredContentReaders);
                    }

                    foreach (IContentReader registeredContentReader in readers)
                    {
                        // Rewind position every time we try to load an asset
                        result          = registeredContentReader.ReadContent(this, ref parameters);
                        stream.Position = startPosition;
                        if (result != null)
                        {
                            break;
                        }
                    }
                }

                if (result == null)
                {
                    throw new NotSupportedException("Unable to load content");
                }
            }
            finally
            {
                // If we don't need to keep the stream open, then we can close it
                // and make sure that we will close the stream even if there is an exception.
                if (!parameters.KeepStreamOpen)
                {
                    stream.Dispose();
                }
            }

            return(result);
        }
Exemplo n.º 4
0
 object IContentReader.ReadContent(IContentManager contentManagerArg, ref ContentReaderParameters parameters)
 {
     return serializer.Deserialize(parameters.Stream, parameters.AssetType);
 }
 public object ReadContent(IContentManager readerManager, ref ContentReaderParameters parameters)
 {
     parameters.KeepStreamOpen = false;
     return EffectData.Load(parameters.Stream);
 }