1 files changed, 65 insertions, 0 deletions
diff --git a/tools/pe_bliss/resource_bitmap_reader.cpp b/tools/pe_bliss/resource_bitmap_reader.cpp
new file mode 100644
index 000000000..29eff549d
--- /dev/null
+++ b/tools/pe_bliss/resource_bitmap_reader.cpp
@@ -0,0 +1,65 @@
+#include <cmath>
+#include "resource_bitmap_reader.h"
+#include "pe_resource_viewer.h"
+#include "pe_structures.h"
+
+namespace pe_bliss
+{
+using namespace pe_win;
+
+resource_bitmap_reader::resource_bitmap_reader(const pe_resource_viewer& res)
+	:res_(res)
+{}
+
+//Returns bitmap data by name and index in language directory (instead of language) (minimum checks of format correctness)
+const std::string resource_bitmap_reader::get_bitmap_by_name(const std::wstring& name, uint32_t index) const
+{
+	return create_bitmap(res_.get_resource_data_by_name(pe_resource_viewer::resource_bitmap, name, index).get_data());
+}
+
+//Returns bitmap data by name and language (minimum checks of format correctness)
+const std::string resource_bitmap_reader::get_bitmap_by_name(uint32_t language, const std::wstring& name) const
+{
+	return create_bitmap(res_.get_resource_data_by_name(language, pe_resource_viewer::resource_bitmap, name).get_data());
+}
+
+//Returns bitmap data by ID and language (minimum checks of format correctness)
+const std::string resource_bitmap_reader::get_bitmap_by_id_lang(uint32_t language, uint32_t id) const
+{
+	return create_bitmap(res_.get_resource_data_by_id(language, pe_resource_viewer::resource_bitmap, id).get_data());
+}
+
+//Returns bitmap data by ID and index in language directory (instead of language) (minimum checks of format correctness)
+const std::string resource_bitmap_reader::get_bitmap_by_id(uint32_t id, uint32_t index) const
+{
+	return create_bitmap(res_.get_resource_data_by_id(pe_resource_viewer::resource_bitmap, id, index).get_data());
+}
+
+//Helper function of creating bitmap header
+const std::string resource_bitmap_reader::create_bitmap(const std::string& resource_data)
+{
+	//Create bitmap file header
+	bitmapfileheader header = {0};
+	header.bfType = 0x4d42; //Signature "BM"
+	header.bfOffBits = sizeof(bitmapfileheader) + sizeof(bitmapinfoheader); //Offset to bitmap bits
+	header.bfSize = static_cast<uint32_t>(sizeof(bitmapfileheader) + resource_data.length()); //Size of bitmap
+
+	//Check size of resource data
+	if(resource_data.length() < sizeof(bitmapinfoheader))
+		throw pe_exception("Incorrect resource bitmap", pe_exception::resource_incorrect_bitmap);
+
+	{
+		//Get bitmap info header
+		const bitmapinfoheader* info = reinterpret_cast<const bitmapinfoheader*>(resource_data.data());
+
+		//If color table is present, skip it
+		if(info->biClrUsed != 0)
+			header.bfOffBits += 4 * info->biClrUsed; //Add this size to offset to bitmap bits
+		else if(info->biBitCount <= 8)
+			header.bfOffBits += 4 * static_cast<uint32_t>(std::pow(2.f, info->biBitCount)); //Add this size to offset to bitmap bits
+	}
+
+	//Return final bitmap data
+	return std::string(reinterpret_cast<const char*>(&header), sizeof(bitmapfileheader)) + resource_data;
+}
+}