Add Pica Texture Encoding Decoding

Supported Formats: A4, A8, L4, L8, RGB565, RGB888 RGBA8888 (for now)
Add a .clang-format
Move ctrff into a subdirectory
Replace the BCLIM creation part with Pica encoder
Fix non const RGB565ToRGBA issue

include/ctrff.hpp

@@ -6,4 +6,5 @@
 #include <ctrff/bcwav.hpp>
 #include <ctrff/binutil.hpp>
 #include <ctrff/lz11.hpp>
+#include <ctrff/pica.hpp>
 #include <ctrff/smdh.hpp>

include/ctrff/bclim.hpp

@@ -9,24 +9,24 @@
 namespace ctrff {
 class CTRFF_API BCLIM : public BinFile {
  public:
-  BCLIM() {}
+  BCLIM() : pCurrent(Header::Default()), pImag(ImagHeader::Default()) {}
   ~BCLIM() {}
 
   enum Format : u32 {
-    L8,
+    L8,  // tested
     A8,  // tested
     LA4,
     LA8,
     HILO8,
     RGB565,  // tested
-    RGB888,
+    RGB888,  // tested
     RGBA5551,
     RGBA4444,
     RGBA8888,  // tested
     ETC1,
     ETC1A4,
-    L4,
-    A4,
+    L4,  // tested
+    A4,  // tested
   };
 
   struct Header {

include/ctrff/helper.hpp

@@ -5,7 +5,7 @@
 namespace ctrff {
 CTRFF_API void String2U16(ctrff::u16 *res, const std::string &src, size_t max);
 CTRFF_API std::string U16toU8(ctrff::u16 *in, size_t max);
-CTRFF_API void RGB565toRGBA(std::vector<ctrff::u8> &img, ctrff::u16 *icon,
+CTRFF_API void RGB565toRGBA(std::vector<ctrff::u8> &img, const ctrff::u16 *icon,
                             const int &w, const int &h);
 // Image can only be rgba8888
 CTRFF_API void RGBA2RGB565(ctrff::u16 *out, const std::vector<ctrff::u8> &img,

include/ctrff/pica.hpp

@@ -0,0 +1,34 @@
+#pragma once
+
+#include <ctrff/types.hpp>
+
+/**
+ * 3ds GPU Stuff
+ */
+
+namespace ctrff {
+namespace Pica {
+enum Color : u32 {
+  L8,  // tested
+  A8,  // tested
+  LA4,
+  LA8,
+  HILO8,
+  RGB565,  // tested
+  RGB888,  // tested
+  RGBA5551,
+  RGBA4444,
+  RGBA8888,  // tested
+  ETC1,
+  ETC1A4,
+  L4,  // tested
+  A4,  // tested
+};
+CTRFF_API void EncodeImage(std::vector<ctrff::u8>& ret,
+                           std::vector<ctrff::u8> rgba, int w, int h,
+                           Color dst);
+CTRFF_API void DecodeImage(std::vector<ctrff::u8>& ret,
+                           std::vector<ctrff::u8> pixels, int w, int h,
+                           Color src);
+}  // namespace Pica
+}  // namespace ctrff