private void WriteImage(IImage image)
{
if (characterMarshal.HasMarshalled(image))
{
/* Been there, done that. */
return;
}
ImageBlob blob = image as ImageBlob;
if (blob == null)
{
throw new SWFModellerException(SWFModellerError.Internal, "Can't write " + image.ToString());
}
switch (blob.DataFormat)
{
case Tag.DefineBitsJPEG2:
case Tag.DefineBitsLossless:
case Tag.DefineBitsLossless2:
WriteBuffer blobBuffer = OpenTag(blob.DataFormat);
blobBuffer.WriteUI16((uint)characterMarshal.GetIDFor(image));
blobBuffer.WriteBytes(blob.FormattedBytes);
CloseTag();
break;
case Tag.DefineBits:
if (blob.JPEGTable != null)
{
if (writtenJPEGTable != null && writtenJPEGTable != blob.JPEGTable)
{
/* ISSUE 16 */
throw new SWFModellerException(SWFModellerError.UnimplementedFeature,
"Can't process multiple JPEG encoding tables yet.");
}
WriteBuffer tables = OpenTag(Tag.JPEGTables);
tables.WriteBytes(blob.JPEGTable.TableData);
CloseTag();
writtenJPEGTable = blob.JPEGTable;
}
WriteBuffer bits = OpenTag(Tag.DefineBits);
bits.WriteUI16((uint)characterMarshal.GetIDFor(image));
bits.WriteBytes(blob.FormattedBytes);
CloseTag();
break;
default:
throw new SWFModellerException(SWFModellerError.Internal, "Can't write image format " + blob.DataFormat.ToString());;
}
}
private bool ReadTag()
{
int type;
uint followingOffset;
this.sdtr.ReadRECORDHEADER(out type, out followingOffset);
uint startOffset = this.sdtr.Offset;
#if DEBUG
Tag _tag = (Tag)type;
bool isDefine = _tag == Tag.DefineShape ||
_tag == Tag.DefineShape3 ||
_tag == Tag.DefineShape4 ||
_tag == Tag.DefineSprite;
this.MarkDumpOffset(
"Body of " + _tag + " (" + type + ") len=" + (followingOffset - this.sdtr.Offset),
isDefine);
this.binaryDumpNest++;
this.taglog.Add(_tag.ToString());
#endif
switch ((Tag)type)
{
case Tag.End:
#if DEBUG
this.binaryDumpNest--;
#endif
return false;
case Tag.ShowFrame:
#if DEBUG
this.MarkDumpOffset("");
#endif
this.frameCursor++;
break;
case Tag.Protect:
this.sdtr.Align8();
if (followingOffset > this.sdtr.Offset)
{
/*(void)*/this.sdtr.ReadUI16(); /* Reserved. Assumed 0. */
this.swf.ProtectHash = this.sdtr.ReadString();
#if DEBUG
this.Log("Protect hash = " + this.swf.ProtectHash);
#endif
}
break;
case Tag.SetBackgroundColor:
this.swf.BackgroundColor = this.sdtr.ReadRGB();
break;
case Tag.PlaceObject:
this.currentTimeline.GetFrame(this.frameCursor).AddTag(this.ReadPlaceObject(followingOffset));
break;
case Tag.PlaceObject2:
this.currentTimeline.GetFrame(this.frameCursor).AddTag(this.ReadPlaceObject2());
break;
case Tag.RemoveObject2:
this.currentTimeline.GetFrame(this.frameCursor).AddTag(this.ReadRemoveObject2());
break;
case Tag.DefineBits:
case Tag.DefineBitsJPEG2:
case Tag.DefineBitsLossless:
case Tag.DefineBitsLossless2:
this.ReadImageBlob((Tag)type, followingOffset);
break;
case Tag.JPEGTables:
jpegTable = new JPEGTable(this.sdtr.ReadByteBlock((int)(followingOffset - this.sdtr.Offset)));
break;
case Tag.DefineSprite:
this.ReadSprite();
break;
case Tag.DefineShape:
case Tag.DefineShape2:
case Tag.DefineShape3:
case Tag.DefineShape4:
this.ReadDefineShapeN((Tag)type, followingOffset);
break;
case Tag.DefineMorphShape:
case Tag.DefineMorphShape2:
this.ReadDefineMorphShape((Tag)type, followingOffset);
break;
case Tag.DefineSceneAndFrameLabelData:
this.ReadSceneAndFrameLabelData();
break;
case Tag.DoABC:
this.ReadDoABC(followingOffset);
break;
case Tag.SymbolClass:
this.ReadSymbolClass();
break;
case Tag.Metadata:
this.ReadXMLMetadata();
break;
case Tag.EnableDebugger2:
this.ReadEnableDebugger2();
break;
case Tag.FrameLabel:
this.currentTimeline.GetFrame(this.frameCursor).Label = this.sdtr.ReadString();
#if DEBUG
this.Log("Frame label = " + this.currentTimeline.GetFrame(this.frameCursor).Label);
#endif
break;
case Tag.DefineFont3:
this.ReadFont((Tag)type);
break;
case Tag.DefineFontAlignZones:
this.ReadFontAlignZones();
break;
case Tag.DefineFontName:
this.ReadFontName();
break;
case Tag.DefineText:
case Tag.DefineText2:
this.ReadText((Tag)type);
break;
case Tag.DefineEditText:
this.ReadEditText();
break;
default:
/* ISSUE 73 */
throw new SWFModellerException(
SWFModellerError.UnimplementedFeature,
@"Unsupported tag type: " + type, swf.Context);
}
this.FinishTag(followingOffset);
#if DEBUG
this.binaryDumpNest--;
#endif
return true;
}
/// <summary>
/// Takes a SWF object and turns it into a .swf binary file. It might seem nicer to
/// write it to a stream, but the stream has a file length at the start which we only
/// know once we've written it all out to a byte array anyway. Returning it as a
/// chunk of data is simply more honest; an output stream would promise streaminess behind
/// the scenes that we cannot deliver.
/// </summary>
/// <returns>The .swf data is returned as a byte array.</returns>
public byte[] ToByteArray()
{
/* We start writing things mid-way through the header, at the point
* where compression comes into effect. Once we've created and perhaps
* compressed the data, we can write the first part of the header and
* concatenate the rest. */
writtenJPEGTable = null;
/* The file contains tags, which can contain tags, each of which is prefixed with a length.
* To track all this, we use a stack of writers, each with its own buffer. The first on the
* stack is the buffer that will contain the file itself. */
this.writers = new Stack<WriteBuffer>();
this.swfOut = new WriteBuffer(Tag.None, "swf");
this.writers.Push(this.swfOut);
this.swfOut.WriteRect(new Rect(0, this.swf.FrameWidth, 0, this.swf.FrameHeight));
this.swfOut.WriteFIXED8(this.swf.Fps);
this.swfOut.WriteUI16(this.swf.FrameCount);
this.WriteTags();
/* Ok, we basically have a SWF now. All we need to do is compress it and
* stick a header on at the front... */
byte[] body = this.swfOut.Data;
uint fileLen = (uint)(body.Length + 8); /* Add the 8 bytes of header we haven't done yet. */
if (this.options.Compressed)
{
MemoryStream zbytes = new MemoryStream();
DeflaterOutputStream zos = new DeflaterOutputStream(zbytes);
zos.Write(body, 0, body.Length);
zos.Close();
body = zbytes.ToArray();
}
MemoryStream final = new MemoryStream();
SWFDataTypeWriter finalWriter = new SWFDataTypeWriter(final);
finalWriter.WriteUI24(this.options.Compressed ? SIG_COMPRESSED : SIG_UNCOMPRESSED);
/* ISSUE 27: Hard-coded SWF version 10. Technically this should be an option but
* for now we don't want the headache of version-specific code. */
finalWriter.WriteUI8(SWF_VERSION);
finalWriter.WriteUI32(fileLen);
finalWriter.Write(body, 0, body.Length);
return final.ToArray();
}
/// <summary>
/// Reads a SWF from the stream.
/// </summary>
/// <returns>A parsed SWF object</returns>
public SWF ReadSWF(SWFContext ctx)
{
#if DEBUG
this.MarkDumpOffset("Start of file");
#endif
this.jpegTable = null;
this.sceneNotes = new List<FrameNote>();
this.frameLabelNotes = new List<FrameNote>();
this.ReadHeader(ctx);
this.fontDict = new Dictionary<int, SWFFont>();
this.frameCursor = 1;
bool as3 = false;
if (this.version >= 8)
{
#if DEBUG
this.MarkDumpOffset("Start of file attributes tag");
#endif
this.ReadFileAttributesTag(out as3);
}
if (!as3)
{
throw new SWFModellerException(
SWFModellerError.SWFParsing,
@"AS2 and under is not supported.", ctx);
}
this.swf = new SWF(ctx, false);
this.swf.FrameWidth = this.frameSize.Width;
this.swf.FrameHeight = this.frameSize.Height;
this.swf.Fps = this.fps;
this.swf.FrameCount = this.frameCount;
this.currentTimeline = this.swf;
bool hasMore = true;
do
{
hasMore = this.ReadTag();
}
while (hasMore);
foreach (FrameNote note in this.sceneNotes)
{
this.swf.GetFrame((int)note.frame).SceneName = note.note;
}
foreach (FrameNote note in this.frameLabelNotes)
{
this.swf.GetFrame((int)note.frame).Label = note.note;
}
foreach (string className in this.LateClassResolutions.Keys)
{
swf.MapClassnameToClip(className, this.LateClassResolutions[className]);
}
return this.swf;
}
