1 files changed, 206 insertions, 0 deletions
diff --git a/shell/other/compatibility_layer.c b/shell/other/compatibility_layer.c
new file mode 100644
index 0000000..2b67e82
--- /dev/null
+++ b/shell/other/compatibility_layer.c
@@ -0,0 +1,206 @@
+#include <SDL/SDL.h>
+#include "main.h"
+#include "snes9x.h"
+#include "soundux.h"
+#include "memmap.h"
+#include "apu.h"
+#include "cheats.h"
+#include "display.h"
+#include "gfx.h"
+#include "cpuexec.h"
+#include "srtc.h"
+#include "sa1.h"
+#include "scaler.h"
+
+static uint32_t width_snes = 256;
+bool8 ROMAPUEnabled = 0;
+
+static FILE *statefile = NULL;
+
+int s_open(const char *fname, const char *mode) {
+  if (statefile) return 0;
+  statefile = fopen(fname, mode);
+
+  if(statefile) {
+    return 1;
+  };
+
+  return 0;
+}
+
+int s_read(void *p, int l) {
+  return fread(p, sizeof(char), l, statefile);
+}
+
+int s_write(void *p, int l) {
+  return fwrite(p, sizeof(char), l, statefile);
+}
+
+void s_close(void) {
+  fclose(statefile);
+  statefile = NULL;
+}
+
+int  (*statef_open)(const char *fname, const char *mode) = s_open;
+int  (*statef_read)(void *p, int l) = s_read;
+int  (*statef_write)(void *p, int l) = s_write;
+void (*statef_close)(void) = s_close;
+
+const char *S9xBasename (const char *filename) { return basename(filename); }
+
+const char* S9xGetFilename(const char* in)
+{
+   static char filename [PATH_MAX + 1];
+   char drive [_MAX_DRIVE + 1];
+   char dir [_MAX_PATH + 1];
+   char fname [_MAX_FNAME + 1];
+   char ext [_MAX_EXT + 1];
+   _splitpath(Memory.ROMFilename, drive, dir, fname, ext);
+   _makepath(filename, drive, dir, fname, in);
+   return filename;
+}
+
+void S9xMessage(int a, int b, const char* msg)
+{
+   //printf("%s\n", msg);
+}
+
+const char* S9xGetDirectory(uint32_t dirtype) { return NULL; }
+
+void S9xDeinitDisplay(void)
+{
+   if (GFX.Screen_buffer)
+      free(GFX.Screen_buffer);
+      
+   if (GFX.ZBuffer_buffer)
+      free(GFX.ZBuffer_buffer);
+   if (GFX.SubZBuffer_buffer)
+      free(GFX.SubZBuffer_buffer);
+
+   GFX.Screen = NULL;
+   GFX.Screen_buffer = NULL;
+   GFX.SubScreen = NULL;
+   GFX.ZBuffer = NULL;
+   GFX.ZBuffer_buffer = NULL;
+   GFX.SubZBuffer = NULL;
+   GFX.SubZBuffer_buffer = NULL;
+}
+
+void S9xInitDisplay(int argc, char** argv)
+{
+   int32_t safety = 128;
+   int32_t h = IMAGE_HEIGHT;
+   
+   width_snes = IMAGE_WIDTH;
+   
+   GFX.Pitch = IMAGE_WIDTH * sizeof(uint16);
+   GFX.Screen_buffer = (uint8_t *) calloc(1, 2048 * 512 * 2 * 2 + safety);
+   GFX.ZBuffer_buffer = (uint8_t *) calloc(1, GFX.Pitch * 512 * sizeof(uint16) + safety);
+   GFX.SubZBuffer_buffer = (uint8_t *) calloc(1, GFX.Pitch * 512 * sizeof(uint16) + safety);
+
+   GFX.Screen = GFX.Screen_buffer + safety;
+   GFX.SubScreen = GFX.Screen + 2048 * 512 * 2;
+   GFX.ZBuffer = GFX.ZBuffer_buffer + safety;
+   GFX.SubZBuffer = GFX.SubZBuffer_buffer + safety;
+   GFX.Delta = 1048576; //(GFX.SubScreen - GFX.Screen) >> 1;
+
+   if (GFX.Delta != ((GFX.SubScreen - GFX.Screen) >> 1))
+      exit(1);
+}
+
+void _splitpath (const char *path, char *drive, char *dir, char *fname, char *ext)
+{
+    char *slash = strrchr ((char *) path, SLASH_CHAR);
+    char *dot   = strrchr ((char *) path, '.');
+
+    *drive = '\0';
+
+    if (dot && slash && dot < slash)
+    {
+        dot = 0;
+    }
+
+    if (!slash)
+    {
+        *dir = '\0';
+        strcpy (fname, path);
+
+        if (dot)
+        {
+            fname[dot - path] = '\0';
+            strcpy (ext, dot + 1);
+        }
+        else
+        {
+            *ext = '\0';
+        }
+    }
+    else
+    {
+        strcpy (dir, path);
+        dir[slash - path] = '\0';
+        strcpy (fname, slash + 1);
+
+        if (dot)
+        {
+            fname[(dot - slash) - 1] = '\0';
+            strcpy (ext, dot + 1);
+        }
+        else
+        {
+            *ext = '\0';
+        }
+    }
+
+    return;
+}
+
+void _makepath (char *path, const char *drive, const char *dir, const char *fname,const char *ext)
+{
+    if (dir && *dir)
+    {
+        strcpy (path, dir);
+        strcat (path, "/");
+    }
+    else
+        *path = '\0';
+
+    strcat (path, fname);
+
+    if (ext && *ext)
+    {
+        strcat (path, ".");
+        strcat (path, ext);
+    }
+
+    return;
+}
+
+void S9xLoadSDD1Data() {}
+
+bool8_32 S9xReadMousePosition(int which1, int* x, int* y, uint32* buttons)
+{
+   (void) which1;
+   (void) x;
+   (void) y;
+   (void) buttons;
+   return false;
+}
+
+bool8_32 S9xReadSuperScopePosition(int* x, int* y, uint32* buttons)
+{
+   (void) x;
+   (void) y;
+   (void) buttons;
+   return true;
+}
+
+bool JustifierOffscreen(void)
+{
+   return false;
+}
+
+void JustifierButtons(uint32_t* justifiers)
+{
+   (void) justifiers;
+}