Defines a lossless bitmap character that contains RGB bitmap data compressed with ZLIB.

The data format used by the ZLIB library is described by Request for Comments (RFCs)

documents 1950 to 1952.

Two kinds of bitmaps are supported. Colormapped images define a colormap of up to 256

colors, each represented by a 24-bit RGB value, and then use 8-bit pixel values to index into

the colormap. Direct images store actual pixel color values using 15 bits (32,768 colors) or 24

bits (about 17 million colors).

Inheritance: AbstractTagHandler, ISwfCharacter
Exemplo n.º 1
0
        /// <summary>
        /// 
        /// </summary>
        /// <param name="tag"></param>
        /// <param name="sourceFile"></param>
        /// <param name="inputStream"></param>
        /// <returns></returns>
        public static TagHandler.AbstractTagHandler Create(Tag tag, SwfFile sourceFile, Stream inputStream)
        {
            TagHandler.AbstractTagHandler product = null;

            //
            // Make parsing non-linear by explicitly placing the inputStream at the
            // OffsetData of the Tag.
            //
            inputStream.Seek((long)tag.OffsetData, SeekOrigin.Begin);
            long before = inputStream.Position;

            //
            // Produce TagHandler
            //
            bool enabled = false;

            try
            {
                enabled = SwfFile.Configuration.TagHandlers(tag.TagTypeName);
            }
            catch(Exception e)
            {
                Log.Error("TagHandlerFactory", "The tag" + tag.TagTypeName + "could not be found in the Dictionary");
                throw e;
            }

            if (!enabled)
            {
                product = new TagHandler.GenericTag(sourceFile.Version);
                Log.Info(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType, "TagHandler for Tag type " + tag.TagTypeName + " disabled in configuration, using generic");
            }

            if (null == product)
            {

                switch (tag.TagType)
                {
                    // Actions section
                    //
                    case TagTypes.DoAction:
                        product = new TagHandler.DoAction(sourceFile.Version);
                        break;

                    case TagTypes.DoInitAction:
                        product = new TagHandler.DoInitAction(sourceFile.Version);
                        break;

                    case TagTypes.FileAttributes:
                        product = new TagHandler.FileAttributes(sourceFile.Version);
                        break;

                    case TagTypes.PlaceObject:
                        product = new TagHandler.PlaceObject(sourceFile.Version);
                        break;

                    case TagTypes.PlaceObject2:
                        product = new TagHandler.PlaceObject2(sourceFile.Version);
                        break;

                    case TagTypes.PlaceObject3:
                        product = new TagHandler.PlaceObject3(sourceFile.Version);
                        break;

                    // Shapes section
                    //
                    case TagTypes.DefineShape:
                        product = new TagHandler.DefineShape(sourceFile.Version);
                        break;

                    case TagTypes.DefineShape2:
                        product = new TagHandler.DefineShape(sourceFile.Version);
                        break;

                    case TagTypes.DefineShape3:
                        product = new TagHandler.DefineShape(sourceFile.Version);
                        break;

                    case TagTypes.DefineShape4:
                        product = new TagHandler.DefineShape4(sourceFile.Version);
                        break;

                    // Bitmap section
                    //
                    case TagTypes.DefineBits:
                        product = new TagHandler.DefineBits(sourceFile.Version);
                        break;

                    case TagTypes.JPEGTables:
                        product = new TagHandler.JPEGTables(sourceFile.Version);
                        break;

                    case TagTypes.DefineBitsJPEG2:
                        product = new TagHandler.DefineBitsJPEG2(sourceFile.Version);
                        break;

                    case TagTypes.DefineBitsJPEG3:
                        product = new TagHandler.DefineBitsJPEG3(sourceFile.Version);
                        break;

                    case TagTypes.DefineBitsLossless:
                        product = new TagHandler.DefineBitsLossless(sourceFile.Version);
                        break;

                    case TagTypes.DefineBitsLossless2:
                        product = new TagHandler.DefineBitsLossless2(sourceFile.Version);
                        break;

                    // Shape Morphing Section
                    //
                    case TagTypes.DefineMorphShape:
                        product = new TagHandler.DefineMorphShape(sourceFile.Version);
                        break;
                    case TagTypes.DefineMorphShape2:
                        product = new TagHandler.DefineMorphShape2(sourceFile.Version);
                        break;

                    // Fonts and Text section
                    //
                    case TagTypes.DefineFont:
                        product = new TagHandler.DefineFont(sourceFile.Version);
                        break;

                    case TagTypes.DefineFont2:
                        product = new TagHandler.DefineFont2(sourceFile.Version);
                        break;

                    case TagTypes.DefineFont3:
                        product = new TagHandler.DefineFont3(sourceFile.Version);
                        break;

                    case TagTypes.DefineFont4:
                        product = new TagHandler.DefineFont4(sourceFile.Version);
                        break;

                    case TagTypes.DefineFontInfo:
                        product = new TagHandler.DefineFontInfo(sourceFile.Version);
                        break;

                    case TagTypes.DefineFontInfo2:
                        product = new TagHandler.DefineFontInfo(sourceFile.Version);
                        break;

                    case TagTypes.DefineFontAlignZones:
                        product = new TagHandler.DefineFontAlignZones(sourceFile.Version);
                        break;

                    case TagTypes.DefineFontName:
                        product = new TagHandler.DefineFontName(sourceFile.Version);
                        break;

                    case TagTypes.DefineText:
                        product = new TagHandler.DefineText(sourceFile.Version);
                        break;

                    case TagTypes.DefineText2:
                        product = new TagHandler.DefineText(sourceFile.Version);
                        break;

                    case TagTypes.DefineEditText:
                        product = new TagHandler.DefineEditText(sourceFile.Version);
                        break;

                    case TagTypes.CSMTextSettings:
                        product = new TagHandler.CsmTextSettings(sourceFile.Version);
                        break;

                    // Sounds Section
                    //
                    case TagTypes.DefineSound:
                        product = new TagHandler.DefineSound(sourceFile.Version);
                        break;

                    case TagTypes.StartSound:
                        product = new TagHandler.StartSound(sourceFile.Version);
                        break;

                    case TagTypes.StartSound2:
                        product = new TagHandler.StartSound2(sourceFile.Version);
                        break;

                    case TagTypes.SoundStreamHead:
                        product = new TagHandler.SoundStreamHead(sourceFile.Version);
                        break;

                    case TagTypes.SoundStreamHead2:
                        product = new TagHandler.SoundStreamHead2(sourceFile.Version);
                        break;

                    case TagTypes.SoundStreamBlock:
                        product = new TagHandler.SoundStreamBlock(sourceFile.Version);
                        break;

                    // Control Section
                    //
                    case TagTypes.DefineSceneAndFrameLabelData:
                        product = new TagHandler.DefineSceneAndFrameLabelData(sourceFile.Version);
                        break;

                    case TagTypes.DefineScalingGrid:
                        product = new TagHandler.DefineScalingGrid(sourceFile.Version);
                        break;

                    case TagTypes.SetTabIndex:
                        product = new TagHandler.SetTabIndex(sourceFile.Version);
                        break;

                    case TagTypes.SetBackgroundColor:
                        product = new TagHandler.SetBackgroundColor(sourceFile.Version);
                        break;

                    case TagTypes.Protect:
                        product = new TagHandler.Protect(sourceFile.Version);
                        break;

                    case TagTypes.Metadata:
                        product = new TagHandler.Metadata(sourceFile.Version);
                        break;

                    case TagTypes.ImportAssets:
                        product = new TagHandler.ImportAssets(sourceFile.Version);
                        break;

                    case TagTypes.ImportAssets2:
                        product = new TagHandler.ImportAssets2(sourceFile.Version);
                        break;

                    case TagTypes.FrameLabel:
                        product = new TagHandler.FrameLabel(sourceFile.Version);
                        break;

                    case TagTypes.ExportAssets:
                        product = new TagHandler.ExportAssets(sourceFile.Version);
                        break;

                    case TagTypes.EnableDebugger:
                        product = new TagHandler.EnableDebugger(sourceFile.Version);
                        break;

                    case TagTypes.EnableDebugger2:
                        product = new TagHandler.EnableDebugger2(sourceFile.Version);
                        break;

                    // Buttons Section
                    //
                    case TagTypes.DefineButton:
                        product = new TagHandler.DefineButton(sourceFile.Version);
                        break;

                    case TagTypes.DefineButton2:
                        product = new TagHandler.DefineButton2(sourceFile.Version);
                        break;

                    // Sprites and Movie Clips section
                    //
                    case TagTypes.DefineSprite:
                        product = new TagHandler.DefineSprite(sourceFile.Version);
                        break;

                    // Video section
                    //

                    // Binary Data section
                    //

                    // Blitzabeleiter internals

                    case TagTypes.ProductID:
                        product = new TagHandler.ProductID(sourceFile.Version);
                        break;

                    case TagTypes.DebugID:
                        product = new TagHandler.DebugID(sourceFile.Version);
                        break;

                    case TagTypes.DefineBinaryData:
                        product = new TagHandler.DefineBinaryData(sourceFile.Version);
                        break;

                    // ABC / AVM2 Code
                    case TagTypes.DoABC:
                        product = new TagHandler.DoABC(sourceFile.Version);
                        break;

                    //case TagTypes.ScriptLimits:
                    //    product = new TagHandler.ScriptLimits(sourceFile.Version);
                    //    break;

                    default:
                        product = new TagHandler.GenericTag(sourceFile.Version);
                        break;
                }
            }

            // Exceptions during this operation propagate all
            // the way up to SwfFile
            product.Read(tag, sourceFile, inputStream);

            // Note: we don't have to check that the stream did only consume as much
            // data as the Tag declared, since the Tag.ReadContent() method reads only
            // the declared amount of data from the Tag and produces a MemoryStream with
            // that. Tag.ReadContent() is used by AbstractTagHandler.Read().

            return product;
        }