Пример #1
0
 protected virtual string Normalize <T>(string assetName)
 {
     if (typeof(T) == typeof(Texture2D) || typeof(T) == typeof(Texture))
     {
         return(Texture2DReader.Normalize(assetName));
     }
     if (typeof(T) == typeof(SpriteFont))
     {
         return(SpriteFontReader.Normalize(assetName));
     }
     if (typeof(T) == typeof(Song))
     {
         return(SongReader.Normalize(assetName));
     }
     if (typeof(T) == typeof(SoundEffect))
     {
         return(SoundEffectReader.Normalize(assetName));
     }
     if (typeof(T) == typeof(Video))
     {
         return(Video.Normalize(assetName));
     }
     if (typeof(T) == typeof(Effect))
     {
         return(EffectReader.Normalize(assetName));
     }
     else
     {
         return((string)null);
     }
 }
Пример #2
0
        protected virtual string Normalize <T>(string assetName)
        {
            if (typeof(T) == typeof(Texture2D) || typeof(T) == typeof(Texture))
            {
                return(Texture2DReader.Normalize(assetName));
            }
            else if ((typeof(T) == typeof(SpriteFont)))
            {
                return(SpriteFontReader.Normalize(assetName));
            }
#if !WINRT
            else if ((typeof(T) == typeof(Song)))
            {
                return(SongReader.Normalize(assetName));
            }
            else if ((typeof(T) == typeof(SoundEffect)))
            {
                return(SoundEffectReader.Normalize(assetName));
            }
#endif
            else if ((typeof(T) == typeof(Effect)))
            {
                return(EffectReader.Normalize(assetName));
            }
            return(null);
        }
Пример #3
0
        protected string GetRealFilename <T>(string assetName)
        {
            // Replace Windows path separators with local path separators
            assetName = GetFilename(assetName);

            // Get the real file name
            if ((typeof(T) == typeof(Curve)))
            {
                assetName = CurveReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Texture2D)))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SpriteFont)))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Effect)))
            {
                assetName = Effect.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Song)))
            {
                assetName = SongReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SoundEffect)))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Video)))
            {
                assetName = Video.Normalize(assetName);
            }

            return(assetName);
        }
Пример #4
0
        internal ContentTypeReader[] LoadAssetReaders(ContentReader reader)
        {
#pragma warning disable 0219, 0649

            /* Trick to prevent the linker removing the code, but not actually execute the code
             * FIXME: Do we really need this in FNA?
             */
            if (falseflag)
            {
                /* Dummy variables required for it to work on iDevices ** DO NOT DELETE **
                 * This forces the classes not to be optimized out when deploying to iDevices
                 */
                ByteReader                hByteReader            = new ByteReader();
                SByteReader               hSByteReader           = new SByteReader();
                DateTimeReader            hDateTimeReader        = new DateTimeReader();
                DecimalReader             hDecimalReader         = new DecimalReader();
                BoundingSphereReader      hBoundingSphereReader  = new BoundingSphereReader();
                BoundingFrustumReader     hBoundingFrustumReader = new BoundingFrustumReader();
                RayReader                 hRayReader             = new RayReader();
                ListReader <char>         hCharListReader        = new ListReader <Char>();
                ListReader <Rectangle>    hRectangleListReader   = new ListReader <Rectangle>();
                ArrayReader <Rectangle>   hRectangleArrayReader  = new ArrayReader <Rectangle>();
                ListReader <Vector3>      hVector3ListReader     = new ListReader <Vector3>();
                ListReader <StringReader> hStringListReader      = new ListReader <StringReader>();
                ListReader <int>          hIntListReader         = new ListReader <Int32>();
                SpriteFontReader          hSpriteFontReader      = new SpriteFontReader();
                Texture2DReader           hTexture2DReader       = new Texture2DReader();
                CharReader                hCharReader            = new CharReader();
                RectangleReader           hRectangleReader       = new RectangleReader();
                StringReader              hStringReader          = new StringReader();
                Vector2Reader             hVector2Reader         = new Vector2Reader();
                Vector3Reader             hVector3Reader         = new Vector3Reader();
                Vector4Reader             hVector4Reader         = new Vector4Reader();
                CurveReader               hCurveReader           = new CurveReader();
                IndexBufferReader         hIndexBufferReader     = new IndexBufferReader();
                BoundingBoxReader         hBoundingBoxReader     = new BoundingBoxReader();
                MatrixReader              hMatrixReader          = new MatrixReader();
                BasicEffectReader         hBasicEffectReader     = new BasicEffectReader();
                VertexBufferReader        hVertexBufferReader    = new VertexBufferReader();
                AlphaTestEffectReader     hAlphaTestEffectReader = new AlphaTestEffectReader();
                EnumReader <Microsoft.Xna.Framework.Graphics.SpriteEffects> hEnumSpriteEffectsReader = new EnumReader <Graphics.SpriteEffects>();
                ArrayReader <float>   hArrayFloatReader   = new ArrayReader <float>();
                ArrayReader <Vector2> hArrayVector2Reader = new ArrayReader <Vector2>();
                ListReader <Vector2>  hListVector2Reader  = new ListReader <Vector2>();
                ArrayReader <Matrix>  hArrayMatrixReader  = new ArrayReader <Matrix>();
                EnumReader <Microsoft.Xna.Framework.Graphics.Blend> hEnumBlendReader = new EnumReader <Graphics.Blend>();
                NullableReader <Rectangle> hNullableRectReader      = new NullableReader <Rectangle>();
                EffectMaterialReader       hEffectMaterialReader    = new EffectMaterialReader();
                ExternalReferenceReader    hExternalReferenceReader = new ExternalReferenceReader();
                SoundEffectReader          hSoundEffectReader       = new SoundEffectReader();
                SongReader  hSongReader  = new SongReader();
                ModelReader hModelReader = new ModelReader();
                Int32Reader hInt32Reader = new Int32Reader();
            }
#pragma warning restore 0219, 0649

            /* The first content byte i read tells me the number of
             * content readers in this XNB file.
             */
            int numberOfReaders                 = reader.Read7BitEncodedInt();
            ContentTypeReader[] newReaders      = new ContentTypeReader[numberOfReaders];
            BitArray            needsInitialize = new BitArray(numberOfReaders);
            contentReaders = new Dictionary <Type, ContentTypeReader>(numberOfReaders);

            /* Lock until we're done allocating and initializing any new
             * content type readers... this ensures we can load content
             * from multiple threads and still cache the readers.
             */
            lock (locker)
            {
                /* For each reader in the file, we read out the
                 * length of the string which contains the type
                 * of the reader, then we read out the string.
                 * Finally we instantiate an instance of that
                 * reader using reflection.
                 */
                for (int i = 0; i < numberOfReaders; i += 1)
                {
                    /* This string tells us what reader we
                     * need to decode the following data.
                     */
                    string originalReaderTypeString = reader.ReadString();

                    Func <ContentTypeReader> readerFunc;
                    if (typeCreators.TryGetValue(originalReaderTypeString, out readerFunc))
                    {
                        newReaders[i]      = readerFunc();
                        needsInitialize[i] = true;
                    }
                    else
                    {
                        // Need to resolve namespace differences
                        string readerTypeString = originalReaderTypeString;
                        readerTypeString = PrepareType(readerTypeString);

                        Type l_readerType = Type.GetType(readerTypeString);
                        if (l_readerType != null)
                        {
                            ContentTypeReader typeReader;
                            if (!contentReadersCache.TryGetValue(l_readerType, out typeReader))
                            {
                                try
                                {
                                    typeReader = l_readerType.GetDefaultConstructor().Invoke(null) as ContentTypeReader;
                                }
                                catch (TargetInvocationException ex)
                                {
                                    /* If you are getting here, the Mono runtime
                                     * is most likely not able to JIT the type.
                                     * In particular, MonoTouch needs help
                                     * instantiating types that are only defined
                                     * in strings in Xnb files.
                                     */
                                    throw new InvalidOperationException(
                                              "Failed to get default constructor for ContentTypeReader. " +
                                              "To work around, add a creation function to ContentTypeReaderManager.AddTypeCreator() " +
                                              "with the following failed type string: " + originalReaderTypeString,
                                              ex
                                              );
                                }

                                needsInitialize[i] = true;

                                contentReadersCache.Add(l_readerType, typeReader);
                            }

                            newReaders[i] = typeReader;
                        }
                        else
                        {
                            throw new ContentLoadException(
                                      "Could not find ContentTypeReader Type. " +
                                      "Please ensure the name of the Assembly that " +
                                      "contains the Type matches the assembly in the full type name: " +
                                      originalReaderTypeString + " (" + readerTypeString + ")"
                                      );
                        }
                    }

                    contentReaders.Add(newReaders[i].TargetType, newReaders[i]);

                    /* I think the next 4 bytes refer to the "Version" of the type reader,
                     * although it always seems to be zero.
                     */
                    reader.ReadInt32();
                }

                // Initialize any new readers.
                for (int i = 0; i < newReaders.Length; i += 1)
                {
                    if (needsInitialize.Get(i))
                    {
                        newReaders[i].Initialize(this);
                    }
                }
            }             // lock (locker)

            return(newReaders);
        }
Пример #5
0
        public T Load <T>(string assetName)
        {
            string originalAssetName = assetName;
            object result            = null;

            if (this.graphicsDeviceService == null)
            {
                this.graphicsDeviceService = serviceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (this.graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ArgumentException("assetname");
            }

            if (!string.IsNullOrEmpty(_rootDirectory))
            {
                assetName = _rootDirectory + Path.DirectorySeparatorChar + assetName;
            }

            // Check for windows-style directory separator character
            assetName = assetName.Replace('\\', Path.DirectorySeparatorChar);

            // Get the real file name
            if ((typeof(T) == typeof(Texture2D)))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(SpriteFont)))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(Song)))
            {
                assetName = SongReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(SoundEffect)))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(Video)))
            {
                assetName = Video.Normalize(assetName);
            }
            if ((typeof(T) == typeof(Effect)))
            {
                assetName = Effect.Normalize(assetName);
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if (Path.GetExtension(assetName).ToUpper() != ".XNB")
            {
                if ((typeof(T) == typeof(Texture2D)))
                {
                    result = Texture2D.FromFile(graphicsDeviceService.GraphicsDevice, assetName);
                }
                if ((typeof(T) == typeof(SpriteFont)))
                {
                    //result = new SpriteFont(Texture2D.FromFile(graphicsDeviceService.GraphicsDevice,assetName), null, null, null, 0, 0.0f, null, null);
                    throw new NotImplementedException();
                }
                if ((typeof(T) == typeof(Song)))
                {
                    result = new Song(assetName);
                }
                if ((typeof(T) == typeof(SoundEffect)))
                {
                    result = new SoundEffect(assetName);
                }
                if ((typeof(T) == typeof(Video)))
                {
                    result = new Video(assetName);
                }
            }
            else
            {
                // Load a XNB file
                FileStream stream = new FileStream(assetName, FileMode.Open, FileAccess.Read, FileShare.Read);

                ContentReader            reader      = new ContentReader(this, stream, this.graphicsDeviceService.GraphicsDevice);
                ContentTypeReaderManager typeManager = new ContentTypeReaderManager(reader);
                reader.TypeReaders = typeManager.LoadAssetReaders(reader);
                foreach (ContentTypeReader r in reader.TypeReaders)
                {
                    r.Initialize(typeManager);
                }
                // we need to read a byte here for things to work out, not sure why
                reader.ReadByte();

                // Get the 1-based index of the typereader we should use to start decoding with
                int index = reader.ReadByte();
                ContentTypeReader contentReader = reader.TypeReaders[index - 1];
                result = reader.ReadObject <T>(contentReader);

                reader.Close();
                stream.Close();
            }

            if (result == null)
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            return((T)result);
        }
		internal ContentTypeReader[] LoadAssetReaders()
        {
#pragma warning disable 0219, 0649
            // Trick to prevent the linker removing the code, but not actually execute the code
            if (falseflag)
            {
                // Dummy variables required for it to work on iDevices ** DO NOT DELETE ** 
                // This forces the classes not to be optimized out when deploying to iDevices
                var hByteReader = new ByteReader();
                var hSByteReader = new SByteReader();
                var hDateTimeReader = new DateTimeReader();
                var hDecimalReader = new DecimalReader();
                var hBoundingSphereReader = new BoundingSphereReader();
                var hBoundingFrustumReader = new BoundingFrustumReader();
                var hRayReader = new RayReader();
                var hCharListReader = new ListReader<Char>();
                var hRectangleListReader = new ListReader<Rectangle>();
                var hRectangleArrayReader = new ArrayReader<Rectangle>();
                var hVector3ListReader = new ListReader<Vector3>();
                var hStringListReader = new ListReader<StringReader>();
				var hIntListReader = new ListReader<Int32>();
                var hSpriteFontReader = new SpriteFontReader();
                var hTexture2DReader = new Texture2DReader();
                var hCharReader = new CharReader();
                var hRectangleReader = new RectangleReader();
                var hStringReader = new StringReader();
                var hVector2Reader = new Vector2Reader();
                var hVector3Reader = new Vector3Reader();
                var hVector4Reader = new Vector4Reader();
                var hCurveReader = new CurveReader();
                var hIndexBufferReader = new IndexBufferReader();
                var hBoundingBoxReader = new BoundingBoxReader();
                var hMatrixReader = new MatrixReader();
                var hBasicEffectReader = new BasicEffectReader();
                var hVertexBufferReader = new VertexBufferReader();
                var hAlphaTestEffectReader = new AlphaTestEffectReader();
                var hEnumSpriteEffectsReader = new EnumReader<Graphics.SpriteEffects>();
                var hArrayFloatReader = new ArrayReader<float>();
                var hArrayVector2Reader = new ArrayReader<Vector2>();
                var hListVector2Reader = new ListReader<Vector2>();
                var hArrayMatrixReader = new ArrayReader<Matrix>();
                var hEnumBlendReader = new EnumReader<Graphics.Blend>();
                var hNullableRectReader = new NullableReader<Rectangle>();
				var hEffectMaterialReader = new EffectMaterialReader();
				var hExternalReferenceReader = new ExternalReferenceReader();
                var hSoundEffectReader = new SoundEffectReader();
                var hSongReader = new SongReader();
            }
#pragma warning restore 0219, 0649

            int numberOfReaders;
			
            // The first content byte i read tells me the number of content readers in this XNB file
            numberOfReaders = _reader.Read7BitEncodedInt();
            contentReaders = new ContentTypeReader[numberOfReaders];
		
            // For each reader in the file, we read out the length of the string which contains the type of the reader,
            // then we read out the string. Finally we instantiate an instance of that reader using reflection
            for (int i = 0; i < numberOfReaders; i++)
            {
                // This string tells us what reader we need to decode the following data
                // string readerTypeString = reader.ReadString();
				string originalReaderTypeString = _reader.ReadString();

                Func<ContentTypeReader> readerFunc;
                if (typeCreators.TryGetValue(originalReaderTypeString, out readerFunc))
                {
                    contentReaders[i] = readerFunc();
                }
                else
                {
                    //System.Diagnostics.Debug.WriteLine(originalReaderTypeString);

    				// Need to resolve namespace differences
    				string readerTypeString = originalReaderTypeString;

    				readerTypeString = PrepareType(readerTypeString);

    				var l_readerType = Type.GetType(readerTypeString);
                    if (l_readerType != null)
                    {
                        try
                        {
                            contentReaders[i] = l_readerType.GetDefaultConstructor().Invoke(null) as ContentTypeReader;
                        }
                        catch (TargetInvocationException ex)
                        {
                            // If you are getting here, the Mono runtime is most likely not able to JIT the type.
                            // In particular, MonoTouch needs help instantiating types that are only defined in strings in Xnb files. 
                            throw new InvalidOperationException(
                                "Failed to get default constructor for ContentTypeReader. To work around, add a creation function to ContentTypeReaderManager.AddTypeCreator() " +
                                "with the following failed type string: " + originalReaderTypeString);
                        }
                    }
                    else
                        throw new ContentLoadException(
                                "Could not find ContentTypeReader Type. Please ensure the name of the Assembly that contains the Type matches the assembly in the full type name: " + 
                                originalReaderTypeString + " (" + readerTypeString + ")");
                }

				// I think the next 4 bytes refer to the "Version" of the type reader,
                // although it always seems to be zero
                int typeReaderVersion = _reader.ReadInt32();
            }

            return contentReaders;
        }
Пример #7
0
        internal ContentTypeReader[] LoadAssetReaders(ContentReader reader)
        {
            #pragma warning disable 0219, 0649
            /* Trick to prevent the linker removing the code, but not actually execute the code
             * FIXME: Do we really need this in FNA?
             */
            if (falseflag)
            {
                /* Dummy variables required for it to work on iDevices ** DO NOT DELETE **
                 * This forces the classes not to be optimized out when deploying to iDevices
                 */
                ByteReader hByteReader = new ByteReader();
                SByteReader hSByteReader = new SByteReader();
                DateTimeReader hDateTimeReader = new DateTimeReader();
                DecimalReader hDecimalReader = new DecimalReader();
                BoundingSphereReader hBoundingSphereReader = new BoundingSphereReader();
                BoundingFrustumReader hBoundingFrustumReader = new BoundingFrustumReader();
                RayReader hRayReader = new RayReader();
                ListReader<char> hCharListReader = new ListReader<Char>();
                ListReader<Rectangle> hRectangleListReader = new ListReader<Rectangle>();
                ArrayReader<Rectangle> hRectangleArrayReader = new ArrayReader<Rectangle>();
                ListReader<Vector3> hVector3ListReader = new ListReader<Vector3>();
                ListReader<StringReader> hStringListReader = new ListReader<StringReader>();
                ListReader<int> hIntListReader = new ListReader<Int32>();
                SpriteFontReader hSpriteFontReader = new SpriteFontReader();
                Texture2DReader hTexture2DReader = new Texture2DReader();
                CharReader hCharReader = new CharReader();
                RectangleReader hRectangleReader = new RectangleReader();
                StringReader hStringReader = new StringReader();
                Vector2Reader hVector2Reader = new Vector2Reader();
                Vector3Reader hVector3Reader = new Vector3Reader();
                Vector4Reader hVector4Reader = new Vector4Reader();
                CurveReader hCurveReader = new CurveReader();
                IndexBufferReader hIndexBufferReader = new IndexBufferReader();
                BoundingBoxReader hBoundingBoxReader = new BoundingBoxReader();
                MatrixReader hMatrixReader = new MatrixReader();
                BasicEffectReader hBasicEffectReader = new BasicEffectReader();
                VertexBufferReader hVertexBufferReader = new VertexBufferReader();
                AlphaTestEffectReader hAlphaTestEffectReader = new AlphaTestEffectReader();
                EnumReader<Microsoft.Xna.Framework.Graphics.SpriteEffects> hEnumSpriteEffectsReader = new EnumReader<Graphics.SpriteEffects>();
                ArrayReader<float> hArrayFloatReader = new ArrayReader<float>();
                ArrayReader<Vector2> hArrayVector2Reader = new ArrayReader<Vector2>();
                ListReader<Vector2> hListVector2Reader = new ListReader<Vector2>();
                ArrayReader<Matrix> hArrayMatrixReader = new ArrayReader<Matrix>();
                EnumReader<Microsoft.Xna.Framework.Graphics.Blend> hEnumBlendReader = new EnumReader<Graphics.Blend>();
                NullableReader<Rectangle> hNullableRectReader = new NullableReader<Rectangle>();
                EffectMaterialReader hEffectMaterialReader = new EffectMaterialReader();
                ExternalReferenceReader hExternalReferenceReader = new ExternalReferenceReader();
                SoundEffectReader hSoundEffectReader = new SoundEffectReader();
                SongReader hSongReader = new SongReader();
            }
            #pragma warning restore 0219, 0649

            /* The first content byte i read tells me the number of
             * content readers in this XNB file.
             */
            int numberOfReaders = reader.Read7BitEncodedInt();
            ContentTypeReader[] newReaders = new ContentTypeReader[numberOfReaders];
            BitArray needsInitialize = new BitArray(numberOfReaders);
            contentReaders = new Dictionary<Type, ContentTypeReader>(numberOfReaders);

            /* Lock until we're done allocating and initializing any new
             * content type readers... this ensures we can load content
             * from multiple threads and still cache the readers.
             */
            lock (locker)
            {
                /* For each reader in the file, we read out the
                 * length of the string which contains the type
                 * of the reader, then we read out the string.
                 * Finally we instantiate an instance of that
                 * reader using reflection.
                 */
                for (int i = 0; i < numberOfReaders; i += 1)
                {
                    /* This string tells us what reader we
                     * need to decode the following data.
                     */
                    string originalReaderTypeString = reader.ReadString();

                    Func<ContentTypeReader> readerFunc;
                    if (typeCreators.TryGetValue(originalReaderTypeString, out readerFunc))
                    {
                        newReaders[i] = readerFunc();
                        needsInitialize[i] = true;
                    }
                    else
                    {
                        // Need to resolve namespace differences
                        string readerTypeString = originalReaderTypeString;
                        readerTypeString = PrepareType(readerTypeString);

                        Type l_readerType = Type.GetType(readerTypeString);
                        if (l_readerType != null)
                        {
                            ContentTypeReader typeReader;
                            if (!contentReadersCache.TryGetValue(l_readerType, out typeReader))
                            {
                                try
                                {
                                    typeReader = l_readerType.GetDefaultConstructor().Invoke(null) as ContentTypeReader;
                                }
                                catch (TargetInvocationException ex)
                                {
                                    /* If you are getting here, the Mono runtime
                                     * is most likely not able to JIT the type.
                                     * In particular, MonoTouch needs help
                                     * instantiating types that are only defined
                                     * in strings in Xnb files.
                                     */
                                    throw new InvalidOperationException(
                                        "Failed to get default constructor for ContentTypeReader. " +
                                        "To work around, add a creation function to ContentTypeReaderManager.AddTypeCreator() " +
                                        "with the following failed type string: " + originalReaderTypeString,
                                        ex
                                    );
                                }

                                needsInitialize[i] = true;

                                contentReadersCache.Add(l_readerType, typeReader);
                            }

                            newReaders[i] = typeReader;
                        }
                        else
                        {
                            throw new ContentLoadException(
                                    "Could not find ContentTypeReader Type. " +
                                    "Please ensure the name of the Assembly that " +
                                    "contains the Type matches the assembly in the full type name: " +
                                    originalReaderTypeString + " (" + readerTypeString + ")"
                            );
                        }
                    }

                    contentReaders.Add(newReaders[i].TargetType, newReaders[i]);

                    /* I think the next 4 bytes refer to the "Version" of the type reader,
                     * although it always seems to be zero.
                     */
                    reader.ReadInt32();
                }

                // Initialize any new readers.
                for (int i = 0; i < newReaders.Length; i += 1)
                {
                    if (needsInitialize.Get(i))
                    {
                        newReaders[i].Initialize(this);
                    }
                }
            } // lock (locker)

            return newReaders;
        }
Пример #8
0
        protected void ReloadAsset(string originalAssetName, object currentAsset)
        {
            if (string.IsNullOrEmpty(originalAssetName))
            {
                throw new ArgumentNullException("assetName");
            }
            if (disposed)
            {
                throw new ObjectDisposedException("ContentManager");
            }

            if (this.graphicsDeviceService == null)
            {
                this.graphicsDeviceService = serviceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (this.graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            // Replace Windows path separators with local path separators
            var assetName = GetFilename(originalAssetName);

            // Get the real file name
            if ((currentAsset is Curve))
            {
                assetName = CurveReader.Normalize(assetName);
            }
            else if ((currentAsset is Texture2D))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            else if ((currentAsset is SpriteFont))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            else if ((currentAsset is Effect))
            {
                assetName = Effect.Normalize(assetName);
            }
            else if ((currentAsset is Song))
            {
                assetName = SongReader.Normalize(assetName);
            }
            else if ((currentAsset is SoundEffect))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            else if ((currentAsset is Video))
            {
                assetName = Video.Normalize(assetName);
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if (!Path.HasExtension(assetName))
                assetName = string.Format("{0}.xnb", assetName);

            if (Path.GetExtension(assetName).ToLower() == ".xnb")
            {
            }
            else
            {
                if ((currentAsset is Texture2D))
                {
                    using (Stream assetStream = OpenStream(assetName))
                    {
                        var asset = currentAsset as Texture2D;
                        asset.Reload(assetStream);
                    }
                }
                else if ((currentAsset is SpriteFont))
                {
                }
                else if ((currentAsset is Song))
                {
                }
                else if ((currentAsset is SoundEffect))
                {
                }
                else if ((currentAsset is Video))
                {
                }
                else if ((currentAsset is Effect))
                {
                }
            }
        }
        internal ContentTypeReader[] LoadAssetReaders()
        {
#pragma warning disable 0219, 0649
            // Trick to prevent the linker removing the code, but not actually execute the code
            if (falseflag)
            {
                // Dummy variables required for it to work on iDevices ** DO NOT DELETE **
                // This forces the classes not to be optimized out when deploying to iDevices
                var hByteReader              = new ByteReader();
                var hSByteReader             = new SByteReader();
                var hDateTimeReader          = new DateTimeReader();
                var hDecimalReader           = new DecimalReader();
                var hBoundingSphereReader    = new BoundingSphereReader();
                var hBoundingFrustumReader   = new BoundingFrustumReader();
                var hRayReader               = new RayReader();
                var hCharListReader          = new ListReader <Char>();
                var hRectangleListReader     = new ListReader <Rectangle>();
                var hRectangleArrayReader    = new ArrayReader <Rectangle>();
                var hVector3ListReader       = new ListReader <Vector3>();
                var hStringListReader        = new ListReader <StringReader>();
                var hIntListReader           = new ListReader <Int32>();
                var hSpriteFontReader        = new SpriteFontReader();
                var hTexture2DReader         = new Texture2DReader();
                var hCharReader              = new CharReader();
                var hRectangleReader         = new RectangleReader();
                var hStringReader            = new StringReader();
                var hVector2Reader           = new Vector2Reader();
                var hVector3Reader           = new Vector3Reader();
                var hVector4Reader           = new Vector4Reader();
                var hCurveReader             = new CurveReader();
                var hIndexBufferReader       = new IndexBufferReader();
                var hBoundingBoxReader       = new BoundingBoxReader();
                var hMatrixReader            = new MatrixReader();
                var hBasicEffectReader       = new BasicEffectReader();
                var hVertexBufferReader      = new VertexBufferReader();
                var hAlphaTestEffectReader   = new AlphaTestEffectReader();
                var hEnumSpriteEffectsReader = new EnumReader <Graphics.SpriteEffects>();
                var hArrayFloatReader        = new ArrayReader <float>();
                var hArrayVector2Reader      = new ArrayReader <Vector2>();
                var hListVector2Reader       = new ListReader <Vector2>();
                var hArrayMatrixReader       = new ArrayReader <Matrix>();
                var hEnumBlendReader         = new EnumReader <Graphics.Blend>();
                var hNullableRectReader      = new NullableReader <Rectangle>();
                var hEffectMaterialReader    = new EffectMaterialReader();
                var hExternalReferenceReader = new ExternalReferenceReader();
                var hSoundEffectReader       = new SoundEffectReader();
                var hSongReader              = new SongReader();
            }
#pragma warning restore 0219, 0649

            int numberOfReaders;

            // The first content byte i read tells me the number of content readers in this XNB file
            numberOfReaders = _reader.Read7BitEncodedInt();
            contentReaders  = new ContentTypeReader[numberOfReaders];

            // For each reader in the file, we read out the length of the string which contains the type of the reader,
            // then we read out the string. Finally we instantiate an instance of that reader using reflection
            for (int i = 0; i < numberOfReaders; i++)
            {
                // This string tells us what reader we need to decode the following data
                // string readerTypeString = reader.ReadString();
                string originalReaderTypeString = _reader.ReadString();

                Func <ContentTypeReader> readerFunc;
                if (typeCreators.TryGetValue(originalReaderTypeString, out readerFunc))
                {
                    contentReaders[i] = readerFunc();
                }
                else
                {
                    //System.Diagnostics.Debug.WriteLine(originalReaderTypeString);

                    // Need to resolve namespace differences
                    string readerTypeString = originalReaderTypeString;

                    readerTypeString = PrepareType(readerTypeString);

                    var l_readerType = Type.GetType(readerTypeString);
                    if (l_readerType != null)
                    {
                        try
                        {
                            contentReaders[i] = l_readerType.GetDefaultConstructor().Invoke(null) as ContentTypeReader;
                        }
                        catch (TargetInvocationException ex)
                        {
                            // If you are getting here, the Mono runtime is most likely not able to JIT the type.
                            // In particular, MonoTouch needs help instantiating types that are only defined in strings in Xnb files.
                            throw new InvalidOperationException(
                                      "Failed to get default constructor for ContentTypeReader. To work around, add a creation function to ContentTypeReaderManager.AddTypeCreator() " +
                                      "with the following failed type string: " + originalReaderTypeString);
                        }
                    }
                    else
                    {
                        throw new ContentLoadException(
                                  "Could not find ContentTypeReader Type. Please ensure the name of the Assembly that contains the Type matches the assembly in the full type name: " +
                                  originalReaderTypeString + " (" + readerTypeString + ")");
                    }
                }

                // I think the next 4 bytes refer to the "Version" of the type reader,
                // although it always seems to be zero
                int typeReaderVersion = _reader.ReadInt32();
            }

            return(contentReaders);
        }
Пример #10
0
        protected T ReadAsset <T>(string assetName, Action <IDisposable> recordDisposableObject)
        {
            if (string.IsNullOrEmpty(assetName))
            {
                throw new ArgumentNullException();
            }
            if (disposed)
            {
                throw new ObjectDisposedException("ContentManager");
            }

            string originalAssetName = assetName;
            object result            = null;

            if (this.graphicsDeviceService == null)
            {
                this.graphicsDeviceService = serviceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (this.graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            // Replace Windows path separators with local path separators
            assetName = Path.Combine(_rootDirectory, assetName.Replace('\\', Path.DirectorySeparatorChar));

            // Get the real file name
            if ((typeof(T) == typeof(Texture2D)))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SpriteFont)))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Effect)))
            {
                assetName = Effect.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Song)))
            {
                assetName = SongReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SoundEffect)))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Video)))
            {
                assetName = Video.Normalize(assetName);
            }
            else
            {
                throw new NotSupportedException("Format not supported");
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if (!Path.HasExtension(assetName))
            {
                assetName = string.Format("{0}.xnb", assetName);
            }

            if (Path.GetExtension(assetName).ToUpper() == ".XNB")
            {
                // Load a XNB file
                //Loads from Assets directory + /assetName
                Stream       stream    = OpenStream(assetName);
                BinaryReader xnbReader = new BinaryReader(stream);

                // The first 4 bytes should be the "XNB" header. i use that to detect an invalid file
                byte[] headerBuffer = new byte[3];
                xnbReader.Read(headerBuffer, 0, 3);

                string headerString = Encoding.UTF8.GetString(headerBuffer, 0, 3);

                byte platform = xnbReader.ReadByte();

                if (string.Compare(headerString, "XNB") != 0 ||
                    !(platform == 'w' || platform == 'x' || platform == 'm'))
                {
                    throw new ContentLoadException("Asset does not appear to be a valid XNB file. Did you process your content for Windows?");
                }

                ushort version         = xnbReader.ReadUInt16();
                int    graphicsProfile = version & 0x7f00;
                version &= 0x80ff;

                bool compressed = false;
                if (version == 0x8005 || version == 0x8004)
                {
                    compressed = true;
                }
                else if (version != 5 && version != 4)
                {
                    throw new ContentLoadException("Invalid XNB version");
                }

                // The next int32 is the length of the XNB file
                int xnbLength = xnbReader.ReadInt32();

                ContentReader reader;
                if (compressed)
                {
                    //decompress the xnb
                    //thanks to ShinAli (https://bitbucket.org/alisci01/xnbdecompressor)
                    int compressedSize   = xnbLength - 14;
                    int decompressedSize = xnbReader.ReadInt32();
                    int newFileSize      = decompressedSize + 10;

                    MemoryStream decompressedStream = new MemoryStream(decompressedSize);

                    LzxDecoder dec          = new LzxDecoder(16);
                    int        decodedBytes = 0;
                    int        pos          = 0;

                    while (pos < compressedSize)
                    {
                        // let's seek to the correct position
                        stream.Seek(pos + 14, SeekOrigin.Begin);
                        int hi         = stream.ReadByte();
                        int lo         = stream.ReadByte();
                        int block_size = (hi << 8) | lo;
                        int frame_size = 0x8000;
                        if (hi == 0xFF)
                        {
                            hi         = lo;
                            lo         = (byte)stream.ReadByte();
                            frame_size = (hi << 8) | lo;
                            hi         = (byte)stream.ReadByte();
                            lo         = (byte)stream.ReadByte();
                            block_size = (hi << 8) | lo;
                            pos       += 5;
                        }
                        else
                        {
                            pos += 2;
                        }

                        if (block_size == 0 || frame_size == 0)
                        {
                            break;
                        }

                        int lzxRet = dec.Decompress(stream, block_size, decompressedStream, frame_size);
                        pos          += block_size;
                        decodedBytes += frame_size;
                    }

                    if (decompressedStream.Position != decompressedSize)
                    {
                        throw new ContentLoadException("Decompression of " + originalAssetName + "failed. " +
                                                       " Try decompressing with nativeDecompressXnb first.");
                    }

                    decompressedStream.Seek(0, SeekOrigin.Begin);
                    reader = new ContentReader(this, decompressedStream, this.graphicsDeviceService.GraphicsDevice);
                }
                else
                {
                    reader = new ContentReader(this, stream, this.graphicsDeviceService.GraphicsDevice);
                }

                ContentTypeReaderManager typeManager = new ContentTypeReaderManager(reader);
                reader.TypeReaders = typeManager.LoadAssetReaders(reader);
                foreach (ContentTypeReader r in reader.TypeReaders)
                {
                    r.Initialize(typeManager);
                }
                // we need to read a byte here for things to work out, not sure why
                reader.ReadByte();

                // Get the 1-based index of the typereader we should use to start decoding with
                int index = reader.ReadByte();
                ContentTypeReader contentReader = reader.TypeReaders[index - 1];
                result = reader.ReadObject <T>(contentReader);

                reader.Close();
                stream.Close();
            }
            else
            {
                if ((typeof(T) == typeof(Texture2D)))
                {
                    //Basically the same as Texture2D.FromFile but loading from the assets instead of a filePath
                    Stream  assetStream = OpenStream(assetName);
                    Bitmap  image       = BitmapFactory.DecodeStream(assetStream);
                    ESImage theTexture  = new ESImage(image, graphicsDeviceService.GraphicsDevice.PreferedFilter);
                    result = new Texture2D(theTexture)
                    {
                        Name = Path.GetFileNameWithoutExtension(assetName)
                    };
                }
                if ((typeof(T) == typeof(SpriteFont)))
                {
                    //result = new SpriteFont(Texture2D.FromFile(graphicsDeviceService.GraphicsDevice,assetName), null, null, null, 0, 0.0f, null, null);
                    throw new NotImplementedException();
                }

                if ((typeof(T) == typeof(Song)))
                {
                    result = new Song(assetName);
                }
                if ((typeof(T) == typeof(SoundEffect)))
                {
                    result = new SoundEffect(assetName);
                }
                if ((typeof(T) == typeof(Video)))
                {
                    result = new Video(assetName);
                }
            }

            /*else
             * {
             *      // Load a XNB file
             * //Loads from Assets directory + /assetName
             *  Stream assetStream = OpenStream(assetName);
             *
             * ContentReader reader = new ContentReader(this, assetStream, this.graphicsDeviceService.GraphicsDevice);
             *      ContentTypeReaderManager typeManager = new ContentTypeReaderManager(reader);
             *      reader.TypeReaders = typeManager.LoadAssetReaders(reader);
             * foreach (ContentTypeReader r in reader.TypeReaders)
             * {
             * r.Initialize(typeManager);
             * }
             * // we need to read a byte here for things to work out, not sure why
             * reader.ReadByte();
             *
             *      // Get the 1-based index of the typereader we should use to start decoding with
             * int index = reader.ReadByte();
             *      ContentTypeReader contentReader = reader.TypeReaders[index - 1];
             * result = reader.ReadObject<T>(contentReader);
             *
             *      reader.Close();
             *      assetStream.Close();
             * }*/

            if (result == null)
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            // Store references to the asset for later use
            T asset = (T)result;

            if (asset is IDisposable && recordDisposableObject != null)
            {
                recordDisposableObject(asset as IDisposable);
            }
            else
            {
                disposableAssets.Add(asset as IDisposable);
            }
            loadedAssets.Add(originalAssetName, asset);

            return((T)result);
        }
		internal ContentTypeReader[] LoadAssetReaders(ContentReader reader)
        {
#pragma warning disable 0219, 0649
            // Trick to prevent the linker removing the code, but not actually execute the code
            if (falseflag)
            {
                // Dummy variables required for it to work on iDevices ** DO NOT DELETE ** 
                // This forces the classes not to be optimized out when deploying to iDevices
                var hByteReader = new ByteReader();
                var hSByteReader = new SByteReader();
                var hDateTimeReader = new DateTimeReader();
                var hDecimalReader = new DecimalReader();
                var hBoundingSphereReader = new BoundingSphereReader();
                var hBoundingFrustumReader = new BoundingFrustumReader();
                var hRayReader = new RayReader();
                var hCharListReader = new ListReader<Char>();
                var hRectangleListReader = new ListReader<Rectangle>();
                var hRectangleArrayReader = new ArrayReader<Rectangle>();
                var hVector3ListReader = new ListReader<Vector3>();
                var hStringListReader = new ListReader<StringReader>();
				var hIntListReader = new ListReader<Int32>();
                var hSpriteFontReader = new SpriteFontReader();
                var hTexture2DReader = new Texture2DReader();
                var hCharReader = new CharReader();
                var hRectangleReader = new RectangleReader();
                var hStringReader = new StringReader();
                var hVector2Reader = new Vector2Reader();
                var hVector3Reader = new Vector3Reader();
                var hVector4Reader = new Vector4Reader();
                var hCurveReader = new CurveReader();
                var hIndexBufferReader = new IndexBufferReader();
                var hBoundingBoxReader = new BoundingBoxReader();
                var hMatrixReader = new MatrixReader();
                var hBasicEffectReader = new BasicEffectReader();
                var hVertexBufferReader = new VertexBufferReader();
                var hAlphaTestEffectReader = new AlphaTestEffectReader();
                var hEnumSpriteEffectsReader = new EnumReader<Graphics.SpriteEffects>();
                var hArrayFloatReader = new ArrayReader<float>();
                var hArrayVector2Reader = new ArrayReader<Vector2>();
                var hListVector2Reader = new ListReader<Vector2>();
                var hArrayMatrixReader = new ArrayReader<Matrix>();
                var hEnumBlendReader = new EnumReader<Graphics.Blend>();
                var hNullableRectReader = new NullableReader<Rectangle>();
				var hEffectMaterialReader = new EffectMaterialReader();
				var hExternalReferenceReader = new ExternalReferenceReader();
                var hSoundEffectReader = new SoundEffectReader();
                var hSongReader = new SongReader();
                var hModelReader = new ModelReader();
                var hInt32Reader = new Int32Reader();

                // At the moment the Video class doesn't exist
                // on all platforms... Allow it to compile anyway.
#if ANDROID || IOS || MONOMAC || (WINDOWS && !OPENGL) || (WINRT && !WINDOWS_PHONE)
                var hVideoReader = new VideoReader();
#endif
            }
#pragma warning restore 0219, 0649

		    // The first content byte i read tells me the number of content readers in this XNB file
            var numberOfReaders = reader.Read7BitEncodedInt();
            var contentReaders = new ContentTypeReader[numberOfReaders];
            var needsInitialize = new BitArray(numberOfReaders);
            _contentReaders = new Dictionary<Type, ContentTypeReader>(numberOfReaders);

            // Lock until we're done allocating and initializing any new
            // content type readers...  this ensures we can load content
            // from multiple threads and still cache the readers.
            lock (_locker)
            {
                // For each reader in the file, we read out the length of the string which contains the type of the reader,
                // then we read out the string. Finally we instantiate an instance of that reader using reflection
                for (var i = 0; i < numberOfReaders; i++)
                {
                    // This string tells us what reader we need to decode the following data
                    // string readerTypeString = reader.ReadString();
                    string originalReaderTypeString = reader.ReadString();

                    Func<ContentTypeReader> readerFunc;
                    if (typeCreators.TryGetValue(originalReaderTypeString, out readerFunc))
                    {
                        contentReaders[i] = readerFunc();
                        needsInitialize[i] = true;
                    }
                    else
                    {
                        //System.Diagnostics.Debug.WriteLine(originalReaderTypeString);

                        // Need to resolve namespace differences
                        string readerTypeString = originalReaderTypeString;

                        readerTypeString = PrepareType(readerTypeString);

                        var l_readerType = Type.GetType(readerTypeString);
                        if (l_readerType != null)
                        {
                            ContentTypeReader typeReader;
                            if (!_contentReadersCache.TryGetValue(l_readerType, out typeReader))
                            {
                                try
                                {
                                    typeReader = l_readerType.GetDefaultConstructor().Invoke(null) as ContentTypeReader;
                                }
                                catch (TargetInvocationException ex)
                                {
                                    // If you are getting here, the Mono runtime is most likely not able to JIT the type.
                                    // In particular, MonoTouch needs help instantiating types that are only defined in strings in Xnb files. 
                                    throw new InvalidOperationException(
                                        "Failed to get default constructor for ContentTypeReader. To work around, add a creation function to ContentTypeReaderManager.AddTypeCreator() " +
                                        "with the following failed type string: " + originalReaderTypeString, ex);
                                }

                                needsInitialize[i] = true;

                                _contentReadersCache.Add(l_readerType, typeReader);
                            }

                            contentReaders[i] = typeReader;
                        }
                        else
                            throw new ContentLoadException(
                                    "Could not find ContentTypeReader Type. Please ensure the name of the Assembly that contains the Type matches the assembly in the full type name: " +
                                    originalReaderTypeString + " (" + readerTypeString + ")");
                    }

                    var targetType = contentReaders[i].TargetType;
                    if (targetType != null)
                      _contentReaders.Add(targetType, contentReaders[i]);

                    // I think the next 4 bytes refer to the "Version" of the type reader,
                    // although it always seems to be zero
                    reader.ReadInt32();
                }

                // Initialize any new readers.
                for (var i = 0; i < contentReaders.Length; i++)
                {
                    if (needsInitialize.Get(i))
                        contentReaders[i].Initialize(this);
                }

            } // lock (_locker)

		    return contentReaders;
        }
Пример #12
0
        protected T ReadAsset <T>(string assetName, Action <IDisposable> recordDisposableObject)
        {
            if (string.IsNullOrEmpty(assetName))
            {
                throw new ArgumentNullException("assetName");
            }
            if (disposed)
            {
                throw new ObjectDisposedException("ContentManager");
            }

            object result = null;

            // FIXME: Should this block be here? -flibit
            if (graphicsDeviceService == null)
            {
                graphicsDeviceService = ServiceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            Stream stream            = null;
            string modifiedAssetName = String.Empty;             // Will be used if we have to guess a filename

            try
            {
                stream = OpenStream(assetName);
            }
            catch (Exception e)
            {
                // Okay, so we couldn’t open it. Maybe it needs a different extension?
                // FIXME: Normalizing checks for a file on the disk, what about custom streams? -flibit
                modifiedAssetName = FileHelpers.NormalizeFilePathSeparators(
                    Path.Combine(RootDirectoryFullPath, assetName)
                    );
                if (typeof(T) == typeof(Texture2D) || typeof(T) == typeof(Texture))
                {
                    modifiedAssetName = Texture2DReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(SoundEffect)))
                {
                    modifiedAssetName = SoundEffectReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Effect)))
                {
                    modifiedAssetName = EffectReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Song)))
                {
                    modifiedAssetName = SongReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Video)))
                {
                    modifiedAssetName = VideoReader.Normalize(modifiedAssetName);
                }

                // Did we get anything…?
                if (String.IsNullOrEmpty(modifiedAssetName))
                {
                    // Nope, nothing we’re aware of!
                    throw new ContentLoadException(
                              "Could not load asset " + assetName + "! Error: " + e.Message,
                              e
                              );
                }

                stream = File.OpenRead(modifiedAssetName);
            }

            using (BinaryReader xnbReader = new BinaryReader(stream))
            {
                try
                {
                    // Try to load as XNB file
                    using (ContentReader reader = GetContentReaderFromXnb(assetName, ref stream, xnbReader, recordDisposableObject))
                    {
                        result = reader.ReadAsset <T>();
                        GraphicsResource resource = result as GraphicsResource;
                        if (resource != null)
                        {
                            resource.Name = assetName;
                        }
                    }
                }
                catch (Exception e)
                {
                    // FIXME: Assuming seekable streams! -flibit
                    stream.Seek(0, SeekOrigin.Begin);

                    // Try to load as a raw asset
                    if (typeof(T) == typeof(Texture2D) || typeof(T) == typeof(Texture))
                    {
                        Texture2D texture = Texture2D.FromStream(
                            graphicsDeviceService.GraphicsDevice,
                            stream
                            );
                        texture.Name = assetName;
                        result       = texture;
                    }
                    else if ((typeof(T) == typeof(SoundEffect)))
                    {
                        result = SoundEffect.FromStream(stream);
                    }
                    else if ((typeof(T) == typeof(Effect)))
                    {
                        byte[] data = new byte[stream.Length];
                        stream.Read(data, 0, (int)stream.Length);
                        result = new Effect(graphicsDeviceService.GraphicsDevice, data);
                    }
                    else if ((typeof(T) == typeof(Song)))
                    {
                        // FIXME: Not using the stream! -flibit
                        result = new Song(modifiedAssetName);
                    }
                    else if ((typeof(T) == typeof(Video)))
                    {
                        // FIXME: Not using the stream! -flibit
                        result = new Video(modifiedAssetName);
                    }
                    else
                    {
                        // We dunno WTF this is, give them the XNB Exception.
                        throw e;
                    }

                    /* Because Raw Assets skip the ContentReader step, they need to have their
                     * disposables recorded here. Doing it outside of this catch will
                     * result in disposables being logged twice.
                     */
                    IDisposable disposableResult = result as IDisposable;
                    if (disposableResult != null)
                    {
                        if (recordDisposableObject != null)
                        {
                            recordDisposableObject(disposableResult);
                        }
                        else
                        {
                            disposableAssets.Add(disposableResult);
                        }
                    }
                }
            }

            if (result == null)
            {
                throw new ContentLoadException("Could not load " + assetName + " asset!");
            }

            return((T)result);
        }
Пример #13
0
        public T Load <T>(string assetName)
        {
            string originalAssetName = assetName;
            object result            = null;

            if (this.graphicsDeviceService == null)
            {
                this.graphicsDeviceService = serviceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (this.graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ArgumentException("assetname");
            }

            if (!string.IsNullOrEmpty(_rootDirectory))
            {
                assetName = _rootDirectory + Path.DirectorySeparatorChar + assetName;
            }

            // Check for windows-style directory separator character
            assetName = assetName.Replace('\\', Path.DirectorySeparatorChar);

            // Get the real file name
            if ((typeof(T) == typeof(Texture2D)))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(SpriteFont)))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(Song)))
            {
                assetName = SongReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(SoundEffect)))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            if ((typeof(T) == typeof(Video)))
            {
                assetName = Video.Normalize(assetName);
            }
            if ((typeof(T) == typeof(Effect)))
            {
                assetName = Effect.Normalize(assetName);
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if (!Path.HasExtension(assetName))
            {
                assetName = string.Format("{0}.xnb", assetName);
            }

            if (Path.GetExtension(assetName).ToUpper() == ".XNB")
            {
                // Load a XNB file
                FileStream   stream    = new FileStream(assetName, FileMode.Open, FileAccess.Read, FileShare.Read);
                BinaryReader xnbReader = new BinaryReader(stream);

                // The first 4 bytes should be the "XNB" header. i use that to detect an invalid file
                byte[] headerBuffer = new byte[3];
                xnbReader.Read(headerBuffer, 0, 3);

                string headerString = Encoding.UTF8.GetString(headerBuffer, 0, 3);

                byte platform = xnbReader.ReadByte();

                if (string.Compare(headerString, "XNB") != 0 ||
                    !(platform == 'w' || platform == 'x' || platform == 'm'))
                {
                    throw new ContentLoadException("Asset does not appear to be a valid XNB file. Did you process your content for Windows?");
                }

                ushort version         = xnbReader.ReadUInt16();
                int    graphicsProfile = version & 0x7f00;
                version &= 0x80ff;

                bool compressed = false;
                if (version == 0x8005 || version == 0x8004)
                {
                    compressed = true;
                }
                else if (version != 5 && version != 4)
                {
                    throw new ContentLoadException("Invalid XNB version");
                }

                // The next int32 is the length of the XNB file
                int xnbLength = xnbReader.ReadInt32();

                ContentReader reader;
                if (compressed)
                {
                    //decompress the xnb
                    //thanks to ShinAli (https://bitbucket.org/alisci01/xnbdecompressor)
                    int compressedSize   = xnbLength - 14;
                    int decompressedSize = xnbReader.ReadInt32();
                    int newFileSize      = decompressedSize + 10;

                    MemoryStream decompressedStream = new MemoryStream(decompressedSize);

                    LzxDecoder dec          = new LzxDecoder(16);
                    int        decodedBytes = 0;
                    int        pos          = 0;

                    while (pos < compressedSize)
                    {
                        // let's seek to the correct position
                        stream.Seek(pos + 14, SeekOrigin.Begin);
                        int hi         = stream.ReadByte();
                        int lo         = stream.ReadByte();
                        int block_size = (hi << 8) | lo;
                        int frame_size = 0x8000;
                        if (hi == 0xFF)
                        {
                            hi         = lo;
                            lo         = (byte)stream.ReadByte();
                            frame_size = (hi << 8) | lo;
                            hi         = (byte)stream.ReadByte();
                            lo         = (byte)stream.ReadByte();
                            block_size = (hi << 8) | lo;
                            pos       += 5;
                        }
                        else
                        {
                            pos += 2;
                        }

                        if (block_size == 0 || frame_size == 0)
                        {
                            break;
                        }

                        int lzxRet = dec.Decompress(stream, block_size, decompressedStream, frame_size);
                        pos          += block_size;
                        decodedBytes += frame_size;
                    }

                    if (decompressedStream.Position != decompressedSize)
                    {
                        throw new ContentLoadException("Decompression of " + originalAssetName + "failed. " +
                                                       " Try decompressing with nativeDecompressXnb first.");
                    }

                    decompressedStream.Seek(0, SeekOrigin.Begin);
                    reader = new ContentReader(this, decompressedStream, this.graphicsDeviceService.GraphicsDevice);
                }
                else
                {
                    reader = new ContentReader(this, stream, this.graphicsDeviceService.GraphicsDevice);
                }

                ContentTypeReaderManager typeManager = new ContentTypeReaderManager(reader);
                reader.TypeReaders = typeManager.LoadAssetReaders(reader);
                foreach (ContentTypeReader r in reader.TypeReaders)
                {
                    r.Initialize(typeManager);
                }
                // we need to read a byte here for things to work out, not sure why
                reader.ReadByte();

                // Get the 1-based index of the typereader we should use to start decoding with
                int index = reader.ReadByte();
                ContentTypeReader contentReader = reader.TypeReaders[index - 1];
                result = reader.ReadObject <T>(contentReader);

                reader.Close();
                stream.Close();
            }
            else
            {
                if ((typeof(T) == typeof(Texture2D)))
                {
                    result = Texture2D.FromFile(graphicsDeviceService.GraphicsDevice, assetName);
                }
                if ((typeof(T) == typeof(SpriteFont)))
                {
                    //result = new SpriteFont(Texture2D.FromFile(graphicsDeviceService.GraphicsDevice,assetName), null, null, null, 0, 0.0f, null, null);
                    throw new NotImplementedException();
                }
                if ((typeof(T) == typeof(Song)))
                {
                    result = new Song(assetName);
                }
                if ((typeof(T) == typeof(SoundEffect)))
                {
                    result = new SoundEffect(assetName);
                }
                if ((typeof(T) == typeof(Video)))
                {
                    result = new Video(assetName);
                }
                if ((typeof(T) == typeof(Effect)))
                {
                    result = new Effect(graphicsDeviceService.GraphicsDevice, assetName);
                }
            }

            if (result == null)
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            return((T)result);
        }
Пример #14
0
        internal ContentTypeReader[] LoadAssetReaders(ContentReader reader)
        {
#pragma warning disable 0219, 0649
            // Trick to prevent the linker removing the code, but not actually execute the code
            if (falseflag)
            {
                // Dummy variables required for it to work on iDevices ** DO NOT DELETE **
                // This forces the classes not to be optimized out when deploying to iDevices
                var hByteReader              = new ByteReader();
                var hSByteReader             = new SByteReader();
                var hDateTimeReader          = new DateTimeReader();
                var hDecimalReader           = new DecimalReader();
                var hBoundingSphereReader    = new BoundingSphereReader();
                var hBoundingFrustumReader   = new BoundingFrustumReader();
                var hRayReader               = new RayReader();
                var hCharListReader          = new ListReader <Char>();
                var hRectangleListReader     = new ListReader <Rectangle>();
                var hRectangleArrayReader    = new ArrayReader <Rectangle>();
                var hVector3ListReader       = new ListReader <Vector3>();
                var hStringListReader        = new ListReader <StringReader>();
                var hIntListReader           = new ListReader <Int32>();
                var hSpriteFontReader        = new SpriteFontReader();
                var hTexture2DReader         = new Texture2DReader();
                var hCharReader              = new CharReader();
                var hRectangleReader         = new RectangleReader();
                var hStringReader            = new StringReader();
                var hVector2Reader           = new Vector2Reader();
                var hVector3Reader           = new Vector3Reader();
                var hVector4Reader           = new Vector4Reader();
                var hCurveReader             = new CurveReader();
                var hIndexBufferReader       = new IndexBufferReader();
                var hBoundingBoxReader       = new BoundingBoxReader();
                var hMatrixReader            = new MatrixReader();
                var hBasicEffectReader       = new BasicEffectReader();
                var hVertexBufferReader      = new VertexBufferReader();
                var hAlphaTestEffectReader   = new AlphaTestEffectReader();
                var hEnumSpriteEffectsReader = new EnumReader <Graphics.SpriteEffects>();
                var hArrayFloatReader        = new ArrayReader <float>();
                var hArrayVector2Reader      = new ArrayReader <Vector2>();
                var hListVector2Reader       = new ListReader <Vector2>();
                var hArrayMatrixReader       = new ArrayReader <Matrix>();
                var hEnumBlendReader         = new EnumReader <Graphics.Blend>();
                var hNullableRectReader      = new NullableReader <Rectangle>();
                var hEffectMaterialReader    = new EffectMaterialReader();
                var hExternalReferenceReader = new ExternalReferenceReader();
                var hSoundEffectReader       = new SoundEffectReader();
                var hSongReader              = new SongReader();
                var hModelReader             = new ModelReader();
                var hInt32Reader             = new Int32Reader();
                var hEffectReader            = new EffectReader();
                var hSingleReader            = new SingleReader();

                // At the moment the Video class doesn't exist
                // on all platforms... Allow it to compile anyway.
#if ANDROID || (IOS && !TVOS) || MONOMAC || (WINDOWS && !OPENGL) || WINDOWS_UAP
                var hVideoReader = new VideoReader();
#endif
            }
#pragma warning restore 0219, 0649

            // The first content byte i read tells me the number of content readers in this XNB file
            var numberOfReaders = reader.Read7BitEncodedInt();
            var contentReaders  = new ContentTypeReader[numberOfReaders];
            var needsInitialize = new BitArray(numberOfReaders);
            _contentReaders = new Dictionary <Type, ContentTypeReader>(numberOfReaders);

            // Lock until we're done allocating and initializing any new
            // content type readers...  this ensures we can load content
            // from multiple threads and still cache the readers.
            lock (_locker)
            {
                // For each reader in the file, we read out the length of the string which contains the type of the reader,
                // then we read out the string. Finally we instantiate an instance of that reader using reflection
                for (var i = 0; i < numberOfReaders; i++)
                {
                    // This string tells us what reader we need to decode the following data
                    // string readerTypeString = reader.ReadString();
                    string originalReaderTypeString = reader.ReadString();

                    Func <ContentTypeReader> readerFunc;
                    if (typeCreators.TryGetValue(originalReaderTypeString, out readerFunc))
                    {
                        contentReaders[i]  = readerFunc();
                        needsInitialize[i] = true;
                    }
                    else
                    {
                        //System.Diagnostics.Debug.WriteLine(originalReaderTypeString);

                        // Need to resolve namespace differences
                        string readerTypeString = originalReaderTypeString;

                        readerTypeString = PrepareType(readerTypeString);

                        var l_readerType = Type.GetType(readerTypeString);
                        if (l_readerType != null)
                        {
                            ContentTypeReader typeReader;
                            if (!_contentReadersCache.TryGetValue(l_readerType, out typeReader))
                            {
                                try
                                {
                                    typeReader = l_readerType.GetDefaultConstructor().Invoke(null) as ContentTypeReader;
                                }
                                catch (TargetInvocationException ex)
                                {
                                    // If you are getting here, the Mono runtime is most likely not able to JIT the type.
                                    // In particular, MonoTouch needs help instantiating types that are only defined in strings in Xnb files.
                                    throw new InvalidOperationException(
                                              "Failed to get default constructor for ContentTypeReader. To work around, add a creation function to ContentTypeReaderManager.AddTypeCreator() " +
                                              "with the following failed type string: " + originalReaderTypeString, ex);
                                }

                                needsInitialize[i] = true;

                                _contentReadersCache.Add(l_readerType, typeReader);
                            }

                            contentReaders[i] = typeReader;
                        }
                        else
                        {
                            throw new ContentLoadException(
                                      "Could not find ContentTypeReader Type. Please ensure the name of the Assembly that contains the Type matches the assembly in the full type name: " +
                                      originalReaderTypeString + " (" + readerTypeString + ")");
                        }
                    }

                    var targetType = contentReaders[i].TargetType;
                    if (targetType != null)
                    {
                        if (!_contentReaders.ContainsKey(targetType))
                        {
                            _contentReaders.Add(targetType, contentReaders[i]);
                        }
                    }

                    // I think the next 4 bytes refer to the "Version" of the type reader,
                    // although it always seems to be zero
                    reader.ReadInt32();
                }

                // Initialize any new readers.
                for (var i = 0; i < contentReaders.Length; i++)
                {
                    if (needsInitialize.Get(i))
                    {
                        contentReaders[i].Initialize(this);
                    }
                }
            } // lock (_locker)

            return(contentReaders);
        }
Пример #15
0
        public T Load <T>(string assetName)
        {
            string originalAssetName = assetName;
            object result            = null;

            if (this.graphicsDeviceService == null)
            {
                this.graphicsDeviceService = serviceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (this.graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            // Check for windows-style directory separator character
            //Lowercase assetName (monodroid specification all assests are lowercase)
            assetName = Path.Combine(_rootDirectory, assetName.Replace('\\', Path.DirectorySeparatorChar)).ToLower();

            // Get the real file name
            if ((typeof(T) == typeof(Texture2D)))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SpriteFont)))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Effect)))
            {
                assetName = Effect.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Song)))
            {
                assetName = SongReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SoundEffect)))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Video)))
            {
                assetName = Video.Normalize(assetName);
            }
            else
            {
                throw new NotSupportedException("Format not supported");
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if (Path.GetExtension(assetName).ToUpper() != ".XNB")
            {
                if ((typeof(T) == typeof(Texture2D)))
                {
                    //Basically the same as Texture2D.FromFile but loading from the assets instead of a filePath
                    Stream  assetStream = Game.contextInstance.Assets.Open(assetName);
                    Bitmap  image       = BitmapFactory.DecodeStream(assetStream);
                    ESImage theTexture  = new ESImage(image, graphicsDeviceService.GraphicsDevice.PreferedFilter);
                    result = new Texture2D(theTexture)
                    {
                        Name = Path.GetFileNameWithoutExtension(assetName)
                    };
                }
                if ((typeof(T) == typeof(SpriteFont)))
                {
                    //result = new SpriteFont(Texture2D.FromFile(graphicsDeviceService.GraphicsDevice,assetName), null, null, null, 0, 0.0f, null, null);
                    throw new NotImplementedException();
                }

                if ((typeof(T) == typeof(Song)))
                {
                    result = new Song(assetName);
                }
                if ((typeof(T) == typeof(SoundEffect)))
                {
                    result = new SoundEffect(assetName);
                }
                if ((typeof(T) == typeof(Video)))
                {
                    result = new Video(assetName);
                }
            }
            else
            {
                // Load a XNB file
                //Loads from Assets directory + /assetName
                Stream assetStream = Game.contextInstance.Assets.Open(assetName);

                ContentReader            reader      = new ContentReader(this, assetStream, this.graphicsDeviceService.GraphicsDevice);
                ContentTypeReaderManager typeManager = new ContentTypeReaderManager(reader);
                reader.TypeReaders = typeManager.LoadAssetReaders(reader);
                foreach (ContentTypeReader r in reader.TypeReaders)
                {
                    r.Initialize(typeManager);
                }
                // we need to read a byte here for things to work out, not sure why
                reader.ReadByte();

                // Get the 1-based index of the typereader we should use to start decoding with
                int index = reader.ReadByte();
                ContentTypeReader contentReader = reader.TypeReaders[index - 1];
                result = reader.ReadObject <T>(contentReader);

                reader.Close();
                assetStream.Close();
            }

            if (result == null)
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            return((T)result);
        }
Пример #16
0
        protected T ReadAsset <T>(string assetName, Action <IDisposable> recordDisposableObject)
        {
            if (string.IsNullOrEmpty(assetName))
            {
                throw new ArgumentNullException("assetName");
            }
            if (disposed)
            {
                throw new ObjectDisposedException("ContentManager");
            }

            object result            = null;
            Stream stream            = null;
            string modifiedAssetName = String.Empty;             // Will be used if we have to guess a filename

            try
            {
                stream = OpenStream(assetName);
            }
            catch (Exception e)
            {
                // Okay, so we couldn't open it. Maybe it needs a different extension?
                // FIXME: This only works for files on the disk, what about custom streams? -flibit
                modifiedAssetName = MonoGame.Utilities.FileHelpers.NormalizeFilePathSeparators(
                    Path.Combine(RootDirectoryFullPath, assetName)
                    );
                if (typeof(T) == typeof(Texture2D) || typeof(T) == typeof(Texture))
                {
                    modifiedAssetName = Texture2DReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(SoundEffect)))
                {
                    modifiedAssetName = SoundEffectReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Effect)))
                {
                    modifiedAssetName = EffectReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Song)))
                {
                    modifiedAssetName = SongReader.Normalize(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Video)))
                {
                    modifiedAssetName = VideoReader.Normalize(modifiedAssetName);
                }
                else
                {
                    // No raw format available, disregard!
                    modifiedAssetName = null;
                }

                // Did we get anything...?
                if (String.IsNullOrEmpty(modifiedAssetName))
                {
                    // Nope, nothing we're aware of!
                    throw new ContentLoadException(
                              "Could not load asset " + assetName + "! Error: " + e.Message,
                              e
                              );
                }

                stream = TitleContainer.OpenStream(modifiedAssetName);
            }

            // Check for XNB header
            stream.Read(xnbHeader, 0, xnbHeader.Length);
            if (xnbHeader[0] == 'X' &&
                xnbHeader[1] == 'N' &&
                xnbHeader[2] == 'B' &&
                targetPlatformIdentifiers.Contains((char)xnbHeader[3]))
            {
                using (BinaryReader xnbReader = new BinaryReader(stream))
                    using (ContentReader reader = GetContentReaderFromXnb(assetName, ref stream, xnbReader, (char)xnbHeader[3], recordDisposableObject))
                    {
                        result = reader.ReadAsset <T>();
                        GraphicsResource resource = result as GraphicsResource;
                        if (resource != null)
                        {
                            resource.Name = assetName;
                        }
                    }
            }
            else
            {
                // It's not an XNB file. Try to load as a raw asset instead.

                // FIXME: Assuming seekable streams! -flibit
                stream.Seek(0, SeekOrigin.Begin);

                if (typeof(T) == typeof(Texture2D) || typeof(T) == typeof(Texture))
                {
                    Texture2D texture;
                    if (xnbHeader[0] == 'D' &&
                        xnbHeader[1] == 'D' &&
                        xnbHeader[2] == 'S' &&
                        xnbHeader[3] == ' ')
                    {
                        texture = Texture2D.DDSFromStreamEXT(
                            GetGraphicsDevice(),
                            stream
                            );
                    }
                    else
                    {
                        texture = Texture2D.FromStream(
                            GetGraphicsDevice(),
                            stream
                            );
                    }
                    texture.Name = assetName;
                    result       = texture;
                }
                else if ((typeof(T) == typeof(SoundEffect)))
                {
                    result = SoundEffect.FromStream(stream);
                }
                else if ((typeof(T) == typeof(Effect)))
                {
                    byte[] data = new byte[stream.Length];
                    stream.Read(data, 0, (int)stream.Length);
                    result = new Effect(GetGraphicsDevice(), data);
                }
                else if ((typeof(T) == typeof(Song)))
                {
                    // FIXME: Not using the stream! -flibit
                    result = new Song(modifiedAssetName);
                }
                else if ((typeof(T) == typeof(Video)))
                {
                    // FIXME: Not using the stream! -flibit
                    result = new Video(modifiedAssetName, GetGraphicsDevice());
                    FNALoggerEXT.LogWarn(
                        "Video " +
                        modifiedAssetName +
                        " does not have an XNB file! Hacking Duration property!"
                        );
                }
                else
                {
                    stream.Close();
                    throw new ContentLoadException("Could not load " + assetName + " asset!");
                }

                /* Because Raw Assets skip the ContentReader step, they need to have their
                 * disposables recorded here. Doing it outside of this catch will
                 * result in disposables being logged twice.
                 */
                IDisposable disposableResult = result as IDisposable;
                if (disposableResult != null)
                {
                    if (recordDisposableObject != null)
                    {
                        recordDisposableObject(disposableResult);
                    }
                    else
                    {
                        disposableAssets.Add(disposableResult);
                    }
                }

                /* Because we're not using a BinaryReader for raw assets, we
                 * need to close the stream ourselves.
                 * -flibit
                 */
                stream.Close();
            }

            return((T)result);
        }
Пример #17
0
        protected T ReadAsset<T>(string assetName, Action<IDisposable> recordDisposableObject)
        {
            if (string.IsNullOrEmpty(assetName))
            {
                throw new ArgumentNullException("assetName");
            }
            if (disposed)
            {
                throw new ObjectDisposedException("ContentManager");
            }

            string originalAssetName = assetName;
            object result = null;

            if (this.graphicsDeviceService == null)
            {
                this.graphicsDeviceService = serviceProvider.GetService(typeof(IGraphicsDeviceService)) as IGraphicsDeviceService;
                if (this.graphicsDeviceService == null)
                {
                    throw new InvalidOperationException("No Graphics Device Service");
                }
            }

            // Replace Windows path separators with local path separators
            assetName = GetFilename(assetName);

            // Get the real file name
            if ((typeof(T) == typeof(Curve))) 
            {				
                assetName = CurveReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Texture2D)))
            {
                assetName = Texture2DReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SpriteFont)))
            {
                assetName = SpriteFontReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Effect)))
            {
                assetName = Effect.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Song)))
            {
                assetName = SongReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(SoundEffect)))
            {
                assetName = SoundEffectReader.Normalize(assetName);
            }
            else if ((typeof(T) == typeof(Video)))
            {
                assetName = Video.Normalize(assetName);
            }

            if (string.IsNullOrEmpty(assetName))
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if (!Path.HasExtension(assetName))
                assetName = string.Format("{0}.xnb", assetName);

            if (Path.GetExtension(assetName).ToLower() == ".xnb")
            {
                // Load a XNB file
                Stream stream = OpenStream(assetName);
                try
                {
                    using (BinaryReader xnbReader = new BinaryReader(stream))
                    {
                        // The first 4 bytes should be the "XNB" header. i use that to detect an invalid file
                        byte x = xnbReader.ReadByte();
                        byte n = xnbReader.ReadByte();
                        byte b = xnbReader.ReadByte();
                        byte platform = xnbReader.ReadByte();

                        if (x != 'X' || n != 'N' || b != 'B' ||
                            !(platform == 'w' || platform == 'x' || platform == 'm'))
                        {
                            throw new ContentLoadException("Asset does not appear to be a valid XNB file. Did you process your content for Windows?");
                        }

                        byte version = xnbReader.ReadByte();
                        byte flags = xnbReader.ReadByte();

                        bool compressed = (flags & 0x80) != 0;
                        if (version != 5 && version != 4)
                        {
                            throw new ContentLoadException("Invalid XNB version");
                        }

                        // The next int32 is the length of the XNB file
                        int xnbLength = xnbReader.ReadInt32();

                        ContentReader reader;
                        if (compressed)
                        {
							
							LzxDecoder dec = new LzxDecoder(16);  							
                            //decompress the xnb
                            //thanks to ShinAli (https://bitbucket.org/alisci01/xnbdecompressor)
                            int compressedSize = xnbLength - 14;
                            int decompressedSize = xnbReader.ReadInt32();
                            int newFileSize = decompressedSize + 10;

                            MemoryStream decompressedStream = new MemoryStream(decompressedSize);

                            int decodedBytes = 0;
                            int pos = 0;							

#if ANDROID
                            // Android native stream does not support the Position property. LzxDecoder.Decompress also uses
                            // Seek.  So we read the entirity of the stream into a memory stream and replace stream with the
                            // memory stream.
                            MemoryStream memStream = new MemoryStream();
                            stream.CopyTo(memStream);
                            memStream.Seek(0, SeekOrigin.Begin);
                            stream.Dispose();
                            stream = memStream;
                            pos = -14;
#endif

                            while (pos < compressedSize)
                            {
                                // let's seek to the correct position
                                // The stream should already be in the correct position, and seeking can be slow
                                stream.Seek(pos + 14, SeekOrigin.Begin);
                                int hi = stream.ReadByte();
                                int lo = stream.ReadByte();
                                int block_size = (hi << 8) | lo;
                                int frame_size = 0x8000;
                                if (hi == 0xFF)
                                {
                                    hi = lo;
                                    lo = (byte)stream.ReadByte();
                                    frame_size = (hi << 8) | lo;
                                    hi = (byte)stream.ReadByte();
                                    lo = (byte)stream.ReadByte();
                                    block_size = (hi << 8) | lo;
                                    pos += 5;
                                }
                                else
                                    pos += 2;

                                if (block_size == 0 || frame_size == 0)
                                    break;

                                int lzxRet = dec.Decompress(stream, block_size, decompressedStream, frame_size);
                                pos += block_size;
                                decodedBytes += frame_size;
                            }

                            if (decompressedStream.Position != decompressedSize)
                            {
                                throw new ContentLoadException("Decompression of " + originalAssetName + "failed. " +
                                                               " Try decompressing with nativeDecompressXnb first.");
                            }

                            decompressedStream.Seek(0, SeekOrigin.Begin);
                            reader = new ContentReader(this, decompressedStream, this.graphicsDeviceService.GraphicsDevice, originalAssetName);
                        }
                        else
                        {
                            reader = new ContentReader(this, stream, this.graphicsDeviceService.GraphicsDevice, originalAssetName);
                        }

                        using (reader)
                        {
                            result = reader.ReadAsset<T>();
                        }
                    }
                }
                finally
                {
                    if (stream != null)
                    {
                        stream.Dispose();
                    }
                }
            }
            else
            {
                if ((typeof(T) == typeof(Texture2D)))
                {
#if IPHONE
					Texture2D texture = Texture2D.FromFile(graphicsDeviceService.GraphicsDevice, assetName);
                    texture.Name = originalAssetName;
                    result = texture;
#else
                    using (Stream assetStream = OpenStream(assetName))
                    {
                        Texture2D texture = Texture2D.FromFile(graphicsDeviceService.GraphicsDevice, assetStream);
                        texture.Name = originalAssetName;
                        result = texture;
                    }
#endif
                }
                else if ((typeof(T) == typeof(SpriteFont)))
                {
                    //result = new SpriteFont(Texture2D.FromFile(graphicsDeviceService.GraphicsDevice,assetName), null, null, null, 0, 0.0f, null, null);
                    throw new NotImplementedException();
                }
                else if ((typeof(T) == typeof(Song)))
                {
                    result = new Song(assetName);
                }
                else if ((typeof(T) == typeof(SoundEffect)))
                {
                    result = new SoundEffect(assetName);
                }
                else if ((typeof(T) == typeof(Video)))
                {
                    result = new Video(assetName);
                }
                else if ((typeof(T) == typeof(Effect)))
                {
                    result = new Effect(graphicsDeviceService.GraphicsDevice, assetName);
                }
            }

            if (result == null)
            {
                throw new ContentLoadException("Could not load " + originalAssetName + " asset!");
            }

            if ( recordDisposableObject != null && result is IDisposable )
                recordDisposableObject(result as IDisposable);

            return (T)result;
        }