Further compression and png work.

src/image/PngWriter.cpp

@@ -1,6 +1,13 @@
 #include "PngWriter.h"
 
+#include "PngElements.h"
 #include "Image.h"
+#include "File.h"
+#include "BufferBitStream.h"
+#include "OutputBitStream.h"
+#include "ImageBitStream.h"
+
+#include "Lz77Encoder.h"
 
 #include <stdio.h>
 
@@ -9,6 +16,11 @@ PngWriter::PngWriter()
 
 }
 
+PngWriter::~PngWriter()
+{
+
+}
+
 std::unique_ptr<PngWriter> PngWriter::Create()
 {
     return std::make_unique<PngWriter>();
@@ -19,8 +31,40 @@ void PngWriter::setPath(const Path& path)
     mPath = path;
 }
 
-void PngWriter::write(const std::unique_ptr<Image<unsigned char> >& image) const
+void PngWriter::writeSignature()
 {
+    mOutStream->writeByte(Png::getHighBitCheck());
+    for (auto byte : Png::getSignature())
+    {
+        mOutStream->writeByte(byte);
+    }
+}
+
+void PngWriter::writeHeader()
+{
+    writeSignature();
+}
+
+void PngWriter::write(const std::unique_ptr<Image<unsigned char> >& image)
+{
+    if (!mPath.empty())
+    {
+        mWorkingFile = std::make_unique<File>(mPath);
+        mWorkingFile->Open(true);
+        mOutStream = std::make_unique<OutputBitStream>(mWorkingFile->GetOutHandle());
+    }
+    else
+    {
+        mOutStream = std::make_unique<BufferBitStream>();
+    }
+
+    mWorkingImage = image.get();
+    mInStream = std::make_unique<ImageBitStream>(image.get());
+
+    writeHeader();
+
+
+
     //mImpl->write(image);
     //auto fp = fopen(mPath.c_str(), "wb");
 
@@ -76,4 +120,9 @@ void PngWriter::write(const std::unique_ptr<Image<unsigned char> >& image) const
 
     //fclose(fp);
     //return;
+
+    if (mWorkingFile)
+    {
+        mWorkingFile->Close();
+    }
 }