Importing a bunch of code from Skarsnik sneshacking repo

src/Application/Editor/Editor.cc

@@ -27,11 +27,15 @@ void Editor::UpdateScreen() {
       overworld_texture = &overworld.owactualMapTexture;
       doneLoaded = true;
     }
-    ImGui::Image((void*)(intptr_t)overworld_texture, ImVec2(overworld.overworldMapBitmap->GetWidth(), overworld.overworldMapBitmap->GetHeight()));
+    // ImGui::Image((void*)(intptr_t)overworld_texture,
+    // ImVec2(overworld.overworldMapBitmap->GetWidth(),
+    // overworld.overworldMapBitmap->GetHeight()));
   }
 
   if (ImGui::BeginTabBar("##TabBar")) {
     DrawOverworldEditor();
+    DrawDungeonEditor();
+    DrawROMInfo();
     ImGui::EndTabBar();
   }
   // ImGui::ShowDemoWindow();
@@ -155,12 +159,8 @@ void Editor::DrawOverworldEditor() {
 
     ImGui::Checkbox("Enable grid", &opt_enable_grid);
 
-    ImVec2 canvas_p0 =
+    ImVec2 canvas_p0 = ImGui::GetCursorScreenPos();
-        ImGui::GetCursorScreenPos();  // ImDrawList API uses screen coordinates!
+    ImVec2 canvas_sz = ImGui::GetContentRegionAvail();
-    ImVec2 canvas_sz =
-        ImGui::GetContentRegionAvail();  // Resize canvas to what's available
-    if (canvas_sz.x < 50.0f) canvas_sz.x = 50.0f;
-    if (canvas_sz.y < 50.0f) canvas_sz.y = 50.0f;
     ImVec2 canvas_p1 =
         ImVec2(canvas_p0.x + canvas_sz.x, canvas_p0.y + canvas_sz.y);
 
@@ -194,8 +194,6 @@ void Editor::DrawOverworldEditor() {
     }
 
     // Pan (we use a zero mouse threshold when there's no context menu)
-    // You may decide to make that threshold dynamic based on whether the mouse
-    // is hovering something etc.
     const float mouse_threshold_for_pan =
         opt_enable_context_menu ? -1.0f : 0.0f;
     if (is_active && ImGui::IsMouseDragging(ImGuiMouseButton_Right,
@@ -247,6 +245,23 @@ void Editor::DrawOverworldEditor() {
     ImGui::EndTabItem();
   }
 }
+void DrawDungeonEditor() {
+  if (ImGui::BeginTabItem("Dungeon")) {
+    ImGui::EndTabItem();
+  }
+}
+
+void Editor::DrawROMInfo() {
+  if (ImGui::BeginTabItem("ROM Info")) {
+    if (isLoaded) {
+      ImGui::Text("Title: %s", rom.getTitle());
+      ImGui::Text("Version: %d", rom.getVersion());
+      ImGui::Text("ROM Size: %ld", rom.getSize());
+    }
+
+    ImGui::EndTabItem();
+  }
+}
 
 }  // namespace View
 }  // namespace Application

src/Application/Editor/Editor.h

@@ -26,6 +26,8 @@ class Editor {
   void DrawEditMenu() const;
 
   void DrawOverworldEditor();
+  void DrawDungeonEditor();
+  void DrawROMInfo();
 
   bool isLoaded = false;
   bool doneLoaded = false;

src/Application/Graphics/Palette.cc

@@ -0,0 +1,83 @@
+#include "Palette.h"
+
+#include <cstdlib>
+#include <cstring>
+
+namespace yaze {
+namespace Application {
+namespace Graphics {
+
+r_palette* palette_create(const unsigned int size, const unsigned int id)
+{
+  r_palette *new_pal = (r_palette*) malloc(sizeof(r_palette));
+  new_pal->colors = (m_color*) malloc(sizeof(m_color) * size);
+  new_pal->id = id;
+  new_pal->size = size;
+  return new_pal;
+}
+
+void		palette_free(r_palette* tofree)
+{
+  free(tofree->colors);
+  free(tofree);
+}
+
+
+r_palette *palette_extract(const char* data, const unsigned int offset, const unsigned int palette_size)
+{
+  r_palette* toret = palette_create(palette_size, 0);
+  unsigned colnum = 0;
+  for (int i = 0; i < palette_size * 2; i += 2)
+  {
+    unsigned short snes_color;
+    snes_color = ((uchar) data[offset + i + 1]) << 8;
+    snes_color = snes_color | ((uchar) data[offset + i]);
+    toret->colors[colnum] = convertcolor_snes_to_rgb(snes_color);
+    colnum++;
+  }
+  return toret;
+}
+
+char*		palette_convert(const r_palette pal)
+{
+  char* toret = (char*) malloc(pal.size * 2);
+  for (unsigned int i = 0; i < pal.size; i++)
+  {
+    unsigned short snes_data = convertcolor_rgb_to_snes(pal.colors[i]);
+    toret[i * 2] = snes_data & 0xFF;
+    toret[i * 2 + 1] = snes_data >> 8;
+  }
+  return toret;
+}
+
+m_color convertcolor_snes_to_rgb(const unsigned short snes_color)
+{
+  m_color toret;
+  
+  toret.red = ((snes_color       ) % 32) * 8;
+  toret.green = ((snes_color /   32) % 32) * 8;
+  toret.blue = ((snes_color / 1024) % 32) * 8;
+
+  toret.red = toret.red + toret.red / 32;
+  toret.green = toret.green + toret.green / 32;
+  toret.blue = toret.blue + toret.blue / 32;
+  return toret;
+}
+
+unsigned short 	convertcolor_rgb_to_snes(const m_color color)
+{
+  return convertcolor_rgb_to_snes2(color.red, color.green, color.blue);
+}
+
+unsigned short 	convertcolor_rgb_to_snes2(const uchar red, const uchar green, const uchar blue)
+{
+  uchar R = red / 8;
+  uchar G = green / 8;
+  uchar B = blue / 8;
+
+  return B * 1024 + G * 32 + R;
+}
+
+}
+}
+}

src/Application/Graphics/Palette.h

@@ -0,0 +1,42 @@
+#ifndef YAZE_APPLICATION_GRAPHICS_PALETTE_H
+#define YAZE_APPLICATION_GRAPHICS_PALETTE_H
+
+namespace yaze {
+namespace Application {
+namespace Graphics {
+
+extern "C" {
+
+typedef unsigned char uchar;
+
+typedef struct {
+  unsigned char red;
+  unsigned char green;
+  unsigned char blue;
+} m_color;
+
+typedef struct {
+  unsigned int id;
+  unsigned int size;
+  m_color* colors;
+} r_palette;
+
+r_palette* palette_create(const unsigned int size, const unsigned int id);
+void palette_free(r_palette* tofree);
+
+r_palette* palette_extract(const char* data, const unsigned int offset,
+                           const unsigned int palette_size);
+
+char* palette_convert(const r_palette pal);
+
+m_color convertcolor_snes_to_rgb(const unsigned short snes_color);
+unsigned short convertcolor_rgb_to_snes(const m_color color);
+unsigned short convertcolor_rgb_to_snes2(const uchar red, const uchar green,
+                                         const uchar blue);
+}
+
+}  // namespace Graphics
+}  // namespace Application
+}  // namespace yaze
+
+#endif  // YAZE_APPLICATION_GRAPHICS_PALETTE_H

src/Application/Graphics/Tile.cc

@@ -1,5 +1,12 @@
 #include "Tile.h"
 
+#include <png.h>
+
+#include <cassert>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+
 namespace yaze {
 namespace Application {
 namespace Graphics {
@@ -21,6 +28,191 @@ ushort TileInfo::toShort() {
   return value;
 }
 
-}  // namespace Data
+char* hexString(const char* str, const unsigned int size) {
+  char* toret = (char*)malloc(size * 3 + 1);
+
+  unsigned int i;
+  for (i = 0; i < size; i++) {
+    sprintf(toret + i * 3, "%02X ", (unsigned char)str[i]);
+  }
+  toret[size * 3] = 0;
+  return toret;
+}
+
+void export_tile_to_png(tile8 rawtile, const r_palette pal,
+                        const char* filename) {
+  FILE* fp = fopen(filename, "wb");
+  png_structp png_ptr =
+      png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+  png_infop info_ptr = png_create_info_struct(png_ptr);
+  png_init_io(png_ptr, fp);
+  png_set_strip_alpha(png_ptr);
+  png_read_update_info(png_ptr, info_ptr);
+
+  png_color* png_palette =
+      (png_color*)png_malloc(png_ptr, pal.size * sizeof(png_color));
+
+  for (unsigned int i = 0; i < pal.size; i++) {
+    png_palette[i].blue = pal.colors[i].blue;
+    png_palette[i].green = pal.colors[i].green;
+    png_palette[i].red = pal.colors[i].red;
+  }
+  png_set_IHDR(png_ptr, info_ptr, 8, 8, 8, PNG_COLOR_TYPE_PALETTE,
+               PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE,
+               PNG_FILTER_TYPE_BASE);
+  png_set_PLTE(png_ptr, info_ptr, png_palette, pal.size);
+
+  png_write_info(png_ptr, info_ptr);
+  png_set_packing(png_ptr);
+
+  png_byte* row_pointers[8];
+  for (unsigned int i = 0; i < 8; i++) {
+    row_pointers[i] = (png_byte*)png_malloc(png_ptr, sizeof(png_byte));
+    memcpy(row_pointers[i], rawtile.data + i * 8, 8);
+  }
+
+  png_write_image(png_ptr, row_pointers);
+
+  png_write_end(png_ptr, info_ptr);
+  png_destroy_write_struct(&png_ptr, &info_ptr);
+
+  png_free(png_ptr, png_palette);
+  png_free(png_ptr, row_pointers);
+}
+
+tile8 unpack_bpp1_tile(const char* data, const unsigned int offset) {
+  return (unpack_bpp_tile(data, offset, 1));
+}
+
+tile8 unpack_bpp2_tile(const char* data, const unsigned int offset) {
+  return (unpack_bpp_tile(data, offset, 2));
+}
+
+tile8 unpack_bpp3_tile(const char* data, const unsigned int offset) {
+  return (unpack_bpp_tile(data, offset, 3));
+}
+
+tile8 unpack_bpp4_tile(const char* data, const unsigned int offset) {
+  return (unpack_bpp_tile(data, offset, 4));
+}
+
+tile8 unpack_bpp8_tile(const char* data, const unsigned int offset) {
+  return (unpack_bpp_tile(data, offset, 8));
+}
+
+tile8 unpack_mode7_tile(const char* data, const unsigned int offset) {
+  tile8 tile;
+  memcpy(tile.data, data + offset, 64);
+  return tile;
+}
+
+tile8 unpack_bpp_tile(const char* data, const unsigned int offset,
+                      const unsigned bpp) {
+  tile8 tile;
+  assert(bpp >= 1 && bpp <= 8);
+  unsigned int bpp_pos[8];  // More for conveniance and readibility
+  for (int col = 0; col < 8; col++) {
+    for (int row = 0; row < 8; row++) {
+      if (bpp == 1) {
+        tile.data[col * 8 + row] = (data[offset + col] >> (7 - row)) & 0x01;
+        continue;
+      }
+      /* SNES bpp format interlace each byte of the first 2 bitplanes.
+       * | byte 1 of first bitplane | byte 1 of the second bitplane | byte 2 of
+       * first bitplane | byte 2 of second bitplane | ..
+       */
+      bpp_pos[0] = offset + col * 2;
+      bpp_pos[1] = offset + col * 2 + 1;
+      char mask = 1 << (7 - row);
+      tile.data[col * 8 + row] = (data[bpp_pos[0]] & mask) == mask;
+      tile.data[col * 8 + row] |= ((data[bpp_pos[1]] & mask) == mask) << 1;
+      if (bpp == 3) {
+        // When we have 3 bitplanes, the bytes for the third bitplane are after
+        // the 16 bytes of the 2 bitplanes.
+        bpp_pos[2] = offset + 16 + col;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[2]] & mask) == mask) << 2;
+      }
+      if (bpp >= 4) {
+        // For 4 bitplanes, the 2 added bitplanes are interlaced like the first
+        // two.
+        bpp_pos[2] = offset + 16 + col * 2;
+        bpp_pos[3] = offset + 16 + col * 2 + 1;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[2]] & mask) == mask) << 2;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[3]] & mask) == mask) << 3;
+      }
+      if (bpp == 8) {
+        bpp_pos[4] = offset + 32 + col * 2;
+        bpp_pos[5] = offset + 32 + col * 2 + 1;
+        bpp_pos[6] = offset + 48 + col * 2;
+        bpp_pos[7] = offset + 48 + col * 2 + 1;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[4]] & mask) == mask) << 4;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[5]] & mask) == mask) << 5;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[6]] & mask) == mask) << 6;
+        tile.data[col * 8 + row] |= ((data[bpp_pos[7]] & mask) == mask) << 7;
+      }
+    }
+  }
+  return tile;
+}
+
+byte* pack_bpp1_tile(const tile8 tile) {
+  unsigned int p = 1;
+  return pack_bpp_tile(tile, 1, &p);
+}
+
+byte* pack_bpp2_tile(const tile8 tile) {
+  unsigned int p = 1;
+  return pack_bpp_tile(tile, 2, &p);
+}
+
+byte* pack_bpp3_tile(const tile8 tile) {
+  unsigned int p = 1;
+  return pack_bpp_tile(tile, 3, &p);
+}
+
+byte* pack_bpp4_tile(const tile8 tile) {
+  unsigned int p = 1;
+  return pack_bpp_tile(tile, 4, &p);
+}
+
+byte* pack_bpp8_tile(const tile8 tile) {
+  unsigned int p = 1;
+  return pack_bpp_tile(tile, 8, &p);
+}
+
+byte* pack_bpp_tile(tile8 tile, const unsigned int bpp, unsigned int* size) {
+  byte* output = (byte*)malloc(bpp * 8);
+  memset(output, 0, bpp * 8);
+  unsigned maxcolor = 2 << bpp;
+  *size = 0;
+
+  for (unsigned int col = 0; col < 8; col++) {
+    for (unsigned int row = 0; row < 8; row++) {
+      byte color = tile.data[col * 8 + row];
+      if (color > maxcolor) return NULL;
+
+      if (bpp == 1) output[col] += (byte)((color & 1) << (7 - row));
+      if (bpp >= 2) {
+        output[col * 2] += (byte)((color & 1) << (7 - row));
+        output[col * 2 + 1] += (byte)(((color & 2) == 2) << (7 - row));
+      }
+      if (bpp == 3) output[16 + col] += (byte)(((color & 4) == 4) << (7 - row));
+      if (bpp >= 4) {
+        output[16 + col * 2] += (byte)(((color & 4) == 4) << (7 - row));
+        output[16 + col * 2 + 1] += (byte)(((color & 8) == 8) << (7 - row));
+      }
+      if (bpp == 8) {
+        output[32 + col * 2] += (byte)(((color & 16) == 16) << (7 - row));
+        output[32 + col * 2 + 1] += (byte)(((color & 32) == 32) << (7 - row));
+        output[48 + col * 2] += (byte)(((color & 64) == 64) << (7 - row));
+        output[48 + col * 2 + 1] += (byte)(((color & 128) == 128) << (7 - row));
+      }
+    }
+  }
+  *size = bpp * 8;
+  return output;
+}
+
+}  // namespace Graphics
 }  // namespace Application
 }  // namespace yaze

src/Application/Graphics/Tile.h

@@ -3,13 +3,48 @@
 
 #include <vector>
 
+#include "Palette.h"
+
 namespace yaze {
 namespace Application {
 namespace Graphics {
 
 using byte = unsigned char;
 using ushort = unsigned short;
+using uint = unsigned int;
 
+// SkarAlttp project code
+extern "C" {
+
+typedef struct {
+  unsigned int id;
+  char data[64];
+  unsigned int palette_id;
+} tile8;
+
+tile8 unpack_bpp8_tile(const char* data, const unsigned int offset);
+tile8 unpack_bpp4_tile(const char* data, const unsigned int offset);
+tile8 unpack_bpp3_tile(const char* data, const unsigned int offset);
+tile8 unpack_bpp2_tile(const char* data, const unsigned int offset);
+tile8 unpack_bpp1_tile(const char* data, const unsigned int offset);
+
+tile8 unpack_bpp_tile(const char* data, const unsigned int offset,
+                      const unsigned int bpp);
+
+byte* pack_bpp1_tile(const tile8 tile);
+byte* pack_bpp2_tile(const tile8 tile);
+byte* pack_bpp3_tile(const tile8 tile);
+byte* pack_bpp4_tile(const tile8 tile);
+byte* pack_bpp8_tile(const tile8 tile);
+
+byte* pack_bpp_tile(const tile8 tile, const unsigned int bpp,
+                    unsigned int* size);
+
+void export_tile_to_png(tile8 rawtile, const r_palette pal,
+                        const char* filename);
+}
+
+// End SkarAlttp project code
 class TileInfo {
  public:
   ushort id_;
@@ -84,7 +119,8 @@ class Tile16 {
     ;
   }
 };
-}  // namespace Data
+
+}  // namespace Graphics
 }  // namespace Application
 }  // namespace yaze
 

src/Application/Utils/ROM.cc

@@ -1,27 +1,270 @@
 #include "ROM.h"
 
+#define ROMMAPPING_LOCATION_SNES_RESERVED -1
+#define ROMMAPPING_LOCATION_SRAM -2
+#define ROMMAPPING_LOCATION_WRAM -3
+
 namespace yaze {
 namespace Application {
 namespace Utils {
 
 using namespace Graphics;
 
+char *rommapping_error_text;
+/*
+ * LoRoM is quite easy
+ */
+int	lorom_snes_to_pc(const unsigned int snes_addr, char** info)
+{
+  unsigned char	bank = snes_addr >> 16;
+  unsigned int	offset = snes_addr & 0x00FFFF;
+  //printf("snes_addr: %X - Bank: %X - Offset: %X\n", snes_addr, bank, offset);
+  
+  // 80-FD is a mirror to the start
+  if (bank >= 0x80 && bank <= 0xFD)
+    bank -= 0x80;
+  if (bank >= 0x00 && bank <= 0x3F && offset < 0x8000 && offset >= 0x2000)
+  {
+    *info = "SNES Reserved";
+    return ROMMAPPING_LOCATION_SNES_RESERVED;
+  }
+  if ((((bank >= 0x70 && bank <= 0x7D) || bank == 0xFE || bank == 0xFF) && offset < 0x8000))
+  {
+    *info = "SRAM";
+    return ROMMAPPING_LOCATION_SRAM;
+  }
+  if (bank == 0x7E || bank == 0x7F || 
+     (bank >= 0x00 && bank <= 0x3F && offset < 0x2000)
+  )
+  {
+    *info = "WRAM section";
+    return ROMMAPPING_LOCATION_WRAM;
+  }
+  
+  if (bank >= 0x40 && bank <= 0x6F && offset < 0x8000)
+    return bank * 0x8000 + offset;
+  if (bank == 0xFE || bank == 0xFF) // this work as if 7E was regular bank
+    bank -= 0xFE - 0x7E;
+  return bank * 0x8000 + (offset - 0x8000);
+}
+
+int	hirom_snes_to_pc(const unsigned int snes_addr, char **info)
+{
+  unsigned char	bank = snes_addr >> 16;
+  unsigned int	offset = snes_addr & 0x00FFFF;
+  
+  // 80-FD is a mirror to the start
+  if (bank >= 0x80 && bank <= 0xFD)
+    bank -= 0x80;
+  
+  if ((bank >= 0x00 && bank <= 0x1F && offset < 0x8000 && offset >= 0x2000) ||
+      (bank >= 0x20 && bank <= 0x3F && offset < 0x6000 && offset >= 0x2000)
+  )
+  {
+    *info = "SNES Reserved";
+    return ROMMAPPING_LOCATION_SNES_RESERVED;
+  }
+  if (bank >= 0x20 && bank <= 0x3F && offset >= 0x6000 && offset < 0x8000)
+  {
+    *info = "SRAM";
+    return ROMMAPPING_LOCATION_SRAM;
+  }
+  if ((bank == 0x7E || bank == 0x7F) ||
+      (bank >= 0x00 && bank <= 0x3F && offset < 0x2000))
+  {
+    *info = "WRAM Section";
+    return ROMMAPPING_LOCATION_WRAM;
+  }
+/*#include <stdio.h>
+  printf("%02X:%04X\n", bank, offset);*/
+  if (bank >= 0xFE)
+    bank -= 0xFE - 0x3E;
+  if (bank >= 0x40 && bank <= 0x7D)
+    bank -= 0x40;
+  return (bank << 16) + offset;
+}
+
+int	hirom_pc_to_snes(const unsigned int pc_addr)
+{
+  unsigned int bank = pc_addr >> 16;
+  unsigned int offset = pc_addr & 0x00FFFF;
+
+  //printf("%02X:%04X\n", bank, offset);
+  if (bank <= 0x3F && offset >= 0x8000)
+      return pc_addr;
+  if (bank <= 0x3D)
+      return pc_addr + 0x400000;
+  return pc_addr + 0xFE0000;
+}
+
+int	hirom_sram_snes_to_pc(const unsigned int snes_addr)
+{
+    unsigned int bank = snes_addr >> 16;
+    unsigned int offset = snes_addr & 0x00FFFF;
+
+    if (bank >= 0x20 && bank <= 0x3F && offset >= 0x6000 && offset < 0x8000)
+        return (bank - 0x20) * 0x2000 + (offset - 0x6000);
+    return -1;
+}
+
+int	hirom_sram_pc_to_snes(const unsigned int pc_addr)
+{
+    unsigned int chuck_nb = pc_addr / 0x2000;
+    unsigned int rest = pc_addr % 0x2000;
+
+    return ((0x20 + chuck_nb) << 16) + 0x6000 + rest;
+}
+
+int	lorom_pc_to_snes(const unsigned int pc_addr)
+{
+   
+   unsigned int bank = pc_addr / 0x8000;
+   unsigned int offset = pc_addr % 0x8000 + 0x8000;
+   
+   //printf("pc_addr: %X - Bank: %X - Offset: %X\n", pc_addr, bank, offset);
+   
+   return (bank << 16) + offset;
+}
+
+int lorom_sram_pc_to_snes(const unsigned int pc_addr)
+{   
+    int chuck_nb = pc_addr / 0x8000;
+    int rest = pc_addr % 0x8000;
+
+    if (chuck_nb <= 0xD)
+        return ((0x70 + chuck_nb) << 16) + rest;
+    if (chuck_nb == 0xE || chuck_nb == 0xF)
+        return ((0xF0 + chuck_nb) << 16) + rest;
+    return -1;
+}
+
+int lorom_sram_snes_to_pc(const unsigned int snes_addr)
+{
+    unsigned char	bank = snes_addr >> 16;
+    unsigned int	offset = snes_addr & 0x00FFFF;
+
+    // F0-FD are mirror of 70-7D
+    if (bank >= 0xF0 && bank <= 0xFD)
+        bank -= 0x80;
+    if (bank >= 0x70 && bank <= 0x7D && offset < 0x8000)
+        return (bank - 0x70) * 0x8000 + offset;
+    if ((bank == 0xFE || bank == 0xFF) && offset < 0x8000)
+        return ((bank - 0xFE) + 0xE) * 0x8000 + offset;
+    return -1;
+}
+
+int	rommapping_snes_to_pc(const unsigned int snes_addr, enum rom_type rom_type, bool header)
+{
+  int	pc_addr;
+  char	*info;
+  switch (rom_type)
+  {
+    case LoROM:
+      pc_addr = lorom_snes_to_pc(snes_addr, &info);
+      break;
+    case HiROM:
+      pc_addr = hirom_snes_to_pc(snes_addr, &info);
+      break;
+    default:
+      return -1;
+  }
+
+  if (pc_addr < 0) {
+    rommapping_error_text = (char *) malloc(strlen(info) + 1);
+    strcpy(rommapping_error_text, info);
+    return pc_addr;
+  }
+  if (header)
+    pc_addr += 0x200;
+  return pc_addr;
+}
+
+int	rommapping_pc_to_snes(const unsigned int pc_addr, enum rom_type rom_type, bool header)
+{
+  int snes_addr;
+  
+  switch (rom_type)
+  {
+      case LoROM:
+        snes_addr = lorom_pc_to_snes(header ? pc_addr - 0x200 : pc_addr);
+        break;
+      case HiROM:
+        snes_addr = hirom_pc_to_snes(header ? pc_addr - 0x200 : pc_addr);
+        break;
+      default:
+        return -1;
+  }
+  return snes_addr;
+}
+
+
+int rommapping_sram_snes_to_pc(const unsigned int snes_addr, enum rom_type rom_type, bool header)
+{
+  int pc_addr;
+  switch (rom_type)
+  {
+    case LoROM:
+      pc_addr = lorom_sram_snes_to_pc(snes_addr);
+      break;
+    case HiROM:
+      pc_addr = hirom_sram_snes_to_pc(snes_addr);
+      break;
+    default:
+      return -1;
+  }
+  if (header)
+    pc_addr += 0x200;
+  return pc_addr;
+}
+
+int	rommapping_sram_pc_to_snes(const unsigned int pc_addr, enum rom_type rom_type, bool header)
+{
+  int snes_addr;
+  
+  switch (rom_type)
+  {
+      case LoROM:
+        snes_addr = lorom_sram_pc_to_snes(header ? pc_addr - 0x200 : pc_addr);
+        break;
+      case HiROM:
+        snes_addr = hirom_sram_pc_to_snes(header ? pc_addr - 0x200 : pc_addr);
+        break;
+      default:
+        return -1;
+  }
+  return snes_addr;
+}
+
 void ROM::LoadFromFile(const std::string& path) {
 
   FILE * file = fopen(path.c_str(), "r+");
   if (file == NULL) return;
   fseek(file, 0, SEEK_END);
-  long int size = ftell(file);
+  size = ftell(file);
   fclose(file);
 
-  std::cout << "size: " << size << std::endl;
-
   // Reading data to array of unsigned chars
   file = fopen(path.c_str(), "r+");
   current_rom_ = (unsigned char *) malloc(size);
   int bytes_read = fread(current_rom_, sizeof(unsigned char), size, file);
   fclose(file);
 
+  memcpy(title, current_rom_, 21);
+  type = LoROM;
+  fastrom = (current_rom_[21] & 0b00110000) == 0b00110000;
+  if (current_rom_[21] & 1)
+      type = HiROM;
+  if ((current_rom_[21] & 0b00000111) == 0b00000111)
+      type = ExHiROM;
+
+  sram_size = 0x400 << current_rom_[24];
+  creator_id =  (current_rom_[26] << 8) | current_rom_[25];
+  version = current_rom_[27];
+  checksum_comp = (current_rom_[29] << 8) | current_rom_[28];
+  checksum = (current_rom_[31] << 8) | current_rom_[30];
+  make_sense = false;
+  if ((checksum ^ checksum_comp) == 0xFFFF)
+      make_sense = true;
 }
 
 int ROM::SnesToPc(int addr) {
@@ -76,14 +319,6 @@ int ROM::ReadLong(int addr) {
           current_rom_[addr]);
 }
 
-Tile16 ROM::ReadTile16(int addr) {
-  ushort t1 = (ushort)((current_rom_[addr + 1] << 8) + current_rom_[addr]);
-  ushort t2 = (ushort)((current_rom_[addr + 3] << 8) + current_rom_[addr + 2]);
-  ushort t3 = (ushort)((current_rom_[addr + 5] << 8) + current_rom_[addr + 4]);
-  ushort t4 = (ushort)((current_rom_[addr + 7] << 8) + current_rom_[addr + 6]);
-  return Tile16((unsigned long)((t1 << 48) + (t2 << 32) + (t3 << 16) + t4));
-}
-
 ushort ROM::ReadShort(int addr) {
   return (ushort)((current_rom_[addr + 1] << 8) + current_rom_[addr]);
 }

src/Application/Utils/ROM.h

@@ -4,6 +4,7 @@
 #include <bits/postypes.h>
 
 #include <cstddef>
+#include <cstring>
 #include <fstream>
 #include <iostream>
 #include <memory>
@@ -20,6 +21,33 @@ namespace Utils {
 using byte = unsigned char;
 using ushort = unsigned short;
 
+extern "C" {
+
+enum rom_type { LoROM, HiROM, ExLoROM, ExHiROM };
+
+extern char* rommapping_error_text;
+
+int rommapping_snes_to_pc(const unsigned int snes_addr, enum rom_type rom_type,
+                          bool header);
+int rommapping_pc_to_snes(const unsigned int pc_addr, enum rom_type rom_type,
+                          bool header);
+
+int rommapping_sram_snes_to_pc(const unsigned int snes_addr,
+                               enum rom_type rom_type, bool header);
+int rommapping_sram_pc_to_snes(const unsigned int pc_addr,
+                               enum rom_type rom_type, bool header);
+
+int lorom_snes_to_pc(const unsigned int snes_addr, char** info);
+int lorom_sram_snes_to_pc(const unsigned int snes_addr);
+int lorom_pc_to_snes(const unsigned int pc_addr);
+int lorom_sram_pc_to_snes(const unsigned int pc_addr);
+
+int hirom_snes_to_pc(const unsigned int snes_addr, char** info);
+int hirom_sram_snes_to_pc(const unsigned int snes_addr);
+int hirom_pc_to_snes(const unsigned int pc_addr);
+int hirom_sram_pc_to_snes(const unsigned int pc_addr);
+}
+
 class ROM {
  public:
   int SnesToPc(int addr);
@@ -31,18 +59,32 @@ class ROM {
   short ReadReverseShort(int addr);
   ushort ReadByte(int addr);
   short ReadRealShort(int addr);
-  Graphics::Tile16 ReadTile16(int addr);
   void WriteShort(int addr, int value);
   int ReadLong(int addr);
   void WriteLong(int addr, int value);
   void LoadFromFile(const std::string& path);
-  inline byte * GetRawData() { return current_rom_; }
+  inline byte* GetRawData() { return current_rom_; }
+
+  const unsigned char* getTitle() const { return title; }
+  unsigned int getSize() const { return size; }
+  char getVersion() const { return version; }
 
  private:
   std::vector<char> original_rom_;
   std::vector<char> working_rom_;
 
   byte* current_rom_;
+
+  enum rom_type type;
+  bool fastrom;
+  bool make_sense;
+  unsigned char title[21];
+  long int size;
+  unsigned int sram_size;
+  uint16_t creator_id;
+  unsigned char version;
+  unsigned char checksum_comp;
+  unsigned char checksum;
 };
 
 }  // namespace Utils