add base snes_color for clib

src/app/gfx/snes_color.h

@@ -1,25 +1,16 @@
 #ifndef YAZE_APP_GFX_SNES_COLOR_H_
 #define YAZE_APP_GFX_SNES_COLOR_H_
 
-#include "imgui/imgui.h"
-
 #include <cstdint>
 #include <vector>
 
+#include "base/snes_color.h"
+#include "imgui/imgui.h"
+
 namespace yaze {
 namespace app {
 namespace gfx {
 
-/**
- * @brief Primitive of 16-bit RGB SNES color.
- */
-struct snes_color {
-  uint16_t red;   /**< Red component of the color. */
-  uint16_t blue;  /**< Blue component of the color. */
-  uint16_t green; /**< Green component of the color. */
-};
-typedef struct snes_color snes_color;
-
 snes_color ConvertSNEStoRGB(uint16_t snes_color);
 uint16_t ConvertRGBtoSNES(const snes_color& color);
 uint16_t ConvertRGBtoSNES(const ImVec4& color);

src/app/gfx/snes_palette.cc

@@ -1,7 +1,6 @@
 #include "snes_palette.h"
 
 #include <SDL.h>
-#include "imgui/imgui.h"
 
 #include <cstdint>
 #include <cstdlib>
@@ -15,6 +14,7 @@
 #include "absl/status/statusor.h"
 #include "app/core/constants.h"
 #include "app/gfx/snes_color.h"
+#include "imgui/imgui.h"
 
 namespace yaze {
 namespace app {
@@ -307,7 +307,7 @@ SnesPalette ReadPaletteFromRom(int offset, int num_colors, const uchar* rom) {
 
   while (color_offset < num_colors) {
     short color = (ushort)((rom[offset + 1]) << 8) | rom[offset];
-    gfx::snes_color new_color;
+    snes_color new_color;
     new_color.red = (color & 0x1F) * 8;
     new_color.green = ((color >> 5) & 0x1F) * 8;
     new_color.blue = ((color >> 10) & 0x1F) * 8;

src/base/snes_color.h

@@ -0,0 +1,24 @@
+#ifndef YAZE_BASE_SNES_COLOR_H_
+#define YAZE_BASE_SNES_COLOR_H_
+
+#include <cstdint>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Primitive of 16-bit RGB SNES color.
+ */
+struct snes_color {
+  uint16_t red;   /**< Red component of the color. */
+  uint16_t blue;  /**< Blue component of the color. */
+  uint16_t green; /**< Green component of the color. */
+};
+typedef struct snes_color snes_color;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // YAZE_BASE_SNES_COLOR_H_