code review - memory alloc changes

source/ngc/fileop.cpp

@@ -223,7 +223,7 @@ LoadBufferFromFAT (char *filepath, bool silent)
     int boffset = 0;
     int read = 0;
 
-    ClearSaveBuffer ();
+    AllocSaveBuffer ();
 
     handle = fopen (filepath, "rb");
 
@@ -246,6 +246,8 @@ LoadBufferFromFAT (char *filepath, bool silent)
 
     fclose (handle);
 
+    FreeSaveBuffer ();
+
     return boffset;
 }
 
@@ -257,6 +259,8 @@ SaveBufferToFAT (char *filepath, int datasize, bool silent)
 {
 	FILE *handle;
 
+	AllocSaveBuffer ();
+
     if (datasize)
     {
         handle = fopen (filepath, "wb");
@@ -273,6 +277,6 @@ SaveBufferToFAT (char *filepath, int datasize, bool silent)
         fclose (handle);
     }
 
-    ClearSaveBuffer ();
+    FreeSaveBuffer ();
     return datasize;
 }

source/ngc/filesel.cpp

@@ -58,19 +58,30 @@ FILEENTRIES filelist[MAXFILES];
 unsigned char *savebuffer = NULL;
 
 /****************************************************************************
- * ClearSaveBuffer ()
+ * AllocSaveBuffer ()
- * Allocate and clear the savebuffer
+ * Clear and allocate the savebuffer
  ***************************************************************************/
 void
-ClearSaveBuffer ()
+AllocSaveBuffer ()
 {
-	if (savebuffer)
+	if (savebuffer != NULL)
 		free(savebuffer);
 
 	savebuffer = (unsigned char *) memalign(32, SAVEBUFFERSIZE);
 	memset (savebuffer, 0, SAVEBUFFERSIZE);
 }
 
+/****************************************************************************
+ * FreeSaveBuffer ()
+ * Free the savebuffer memory
+ ***************************************************************************/
+void
+FreeSaveBuffer ()
+{
+	if (savebuffer != NULL)
+		free(savebuffer);
+}
+
 /****************************************************************************
 * autoLoadMethod()
 * Auto-determines and sets the load method
@@ -220,7 +231,7 @@ void StripExt(char* returnstring, char * inputstring)
 	strcpy (returnstring, inputstring);
 	loc_dot = strrchr(returnstring,'.');
 	if (loc_dot != NULL)
-		*loc_dot = '\0';	// strip file extension
+		loc_dot = 0; // strip file extension
 }
 
 /****************************************************************************

source/ngc/filesel.h

@@ -37,7 +37,8 @@ extern int selection;
 extern char currentdir[MAXPATHLEN];
 extern int maxfiles;
 
-void ClearSaveBuffer ();
+void AllocSaveBuffer();
+void FreeSaveBuffer();
 int OpenROM (int method);
 int autoLoadMethod();
 int autoSaveMethod();

source/ngc/freeze.cpp

@@ -138,7 +138,7 @@ NGCFreezeGame (int method, bool8 silent)
 	S9xSetSoundMute (TRUE);
 	S9xPrepareSoundForSnapshotSave (FALSE);
 
-	ClearSaveBuffer ();
+	AllocSaveBuffer ();
 	NGCFreezeMemBuffer (); // copy freeze mem into savebuffer
 
 	S9xPrepareSoundForSnapshotSave (TRUE);
@@ -198,6 +198,8 @@ NGCFreezeGame (int method, bool8 silent)
 			offset = SaveBufferToMC ( savebuffer, CARD_SLOTB, filename, woffset, SILENT );
 	}
 
+	FreeSaveBuffer ();
+
 	if(offset > 0) // save successful!
 	{
 		if(!silent)
@@ -260,6 +262,8 @@ NGCUnfreezeGame (int method, bool8 silent)
     if(method == METHOD_AUTO)
 		method = autoSaveMethod(); // we use 'Save' because snapshot needs R/W
 
+    AllocSaveBuffer ();
+
 	if (method == METHOD_SD || method == METHOD_USB) // SD & USB
 	{
 		if(ChangeFATInterface(method, NOTSILENT))
@@ -321,10 +325,12 @@ NGCUnfreezeGame (int method, bool8 silent)
 		}
     }
 
+	int result = 0;
+
 	if(offset > 0)
 	{
 		if (S9xUnfreezeGame ("AGAME") == SUCCESS)
-			return 1;
+			result = 1;
 		else
 			WaitPrompt((char*) "Error thawing");
 	}
@@ -333,5 +339,6 @@ NGCUnfreezeGame (int method, bool8 silent)
 		if(!silent)
 			WaitPrompt((char*) "Freeze file not found");
 	}
-	return 0; // if we reached here, nothing was done!
+	FreeSaveBuffer ();
+	return result;
 }

source/ngc/input.cpp

@@ -45,8 +45,6 @@ extern int ConfigRequested;
 #define ASSIGN_BUTTON_FALSE( keycode, snescmd ) \
 	  S9xMapButton( keycode, cmd = S9xGetCommandT(snescmd), false)
 
-#define MAXJP 12
-
 /*** Gamecube controller Padmap ***/
 unsigned int gcpadmap[] = { PAD_BUTTON_A, PAD_BUTTON_B,
   PAD_BUTTON_X, PAD_BUTTON_Y,

source/ngc/input.h

@@ -18,6 +18,7 @@
 
 #define PI 				3.14159265f
 #define PADCAL			50
+#define MAXJP 			12 // # of mappable controller buttons
 
 extern unsigned int gcpadmap[];
 extern unsigned int wmpadmap[];

source/ngc/preferences.cpp

@@ -14,10 +14,6 @@
 #include <ogcsys.h>
 #include <mxml.h>
 
-#include "snes9x.h"
-#include "memmap.h"
-#include "srtc.h"
-
 #include "snes9xGX.h"
 #include "images/saveicon.h"
 #include "menudraw.h"
@@ -25,15 +21,10 @@
 #include "fileop.h"
 #include "smbop.h"
 #include "filesel.h"
+#include "input.h"
 
 extern int currconfig[4];
 
-// button map configurations
-extern unsigned int gcpadmap[];
-extern unsigned int wmpadmap[];
-extern unsigned int ccpadmap[];
-extern unsigned int ncpadmap[];
-
 #define PREFS_FILE_NAME "SNES9xGX.xml"
 
 char prefscomment[2][32];
@@ -49,7 +40,7 @@ mxml_node_t *section;
 mxml_node_t *item;
 mxml_node_t *elem;
 
-char temp[200];
+char temp[20];
 
 const char * toStr(int i)
 {
@@ -79,7 +70,7 @@ void createXMLController(unsigned int controller[], const char * name, const cha
 	mxmlElementSetAttr(item, "description", description);
 
 	// create buttons
-	for(int i=0; i < 12; i++)
+	for(int i=0; i < MAXJP; i++)
 	{
 		elem = mxmlNewElement(item, "button");
 		mxmlElementSetAttr(elem, "number", toStr(i));
@@ -119,7 +110,6 @@ int
 preparePrefsData (int method)
 {
 	int offset = 0;
-	ClearSaveBuffer ();
 
 	// add save icon and comments for Memory Card saves
 	if(method == METHOD_MC_SLOTA || method == METHOD_MC_SLOTB)
@@ -227,7 +217,7 @@ void loadXMLController(unsigned int controller[], const char * name)
 	if(item)
 	{
 		// populate buttons
-		for(int i=0; i < 12; i++)
+		for(int i=0; i < MAXJP; i++)
 		{
 			elem = mxmlFindElement(item, xml, "button", "number", toStr(i), MXML_DESCEND);
 			if(elem)
@@ -322,6 +312,7 @@ SavePrefs (int method, bool silent)
 	int datasize;
 	int offset = 0;
 
+	AllocSaveBuffer ();
 	datasize = preparePrefsData (method);
 
 	if (!silent)
@@ -349,6 +340,8 @@ SavePrefs (int method, bool silent)
 		offset = SaveBufferToMC (savebuffer, CARD_SLOTB, (char *)PREFS_FILE_NAME, datasize, silent);
 	}
 
+	FreeSaveBuffer ();
+
 	if (offset > 0)
 	{
 		if (!silent)
@@ -368,6 +361,8 @@ LoadPrefsFromMethod (int method)
 	char filepath[1024];
 	int offset = 0;
 
+	AllocSaveBuffer ();
+
 	if(method == METHOD_SD || method == METHOD_USB)
 	{
 		if(ChangeFATInterface(method, NOTSILENT))
@@ -393,6 +388,8 @@ LoadPrefsFromMethod (int method)
 	if (offset > 0)
 		retval = decodePrefsData (method);
 
+	FreeSaveBuffer ();
+
 	return retval;
 }
 

source/ngc/smbop.cpp

@@ -246,6 +246,8 @@ SaveBufferToSMB (char *filepath, int datasize, bool silent)
 	int wrote = 0;
 	int boffset = 0;
 
+	AllocSaveBuffer();
+
 	smbfile =
 	SMB_OpenFile (SMBPath(filepath), SMB_OPEN_WRITING | SMB_DENY_NONE,
 	SMB_OF_CREATE | SMB_OF_TRUNCATE, smbconn);
@@ -273,6 +275,8 @@ SaveBufferToSMB (char *filepath, int datasize, bool silent)
 		WaitPrompt (msg);
 	}
 
+	FreeSaveBuffer();
+
 	return boffset;
 }
 
@@ -284,8 +288,10 @@ SaveBufferToSMB (char *filepath, int datasize, bool silent)
 int
 LoadBufferFromSMB (char *filepath, bool silent)
 {
-	ClearSaveBuffer ();
+	AllocSaveBuffer();
-	return LoadBufferFromSMB((char *)savebuffer, filepath, silent);
+	int result = LoadBufferFromSMB((char *)savebuffer, filepath, silent);
+	FreeSaveBuffer();
+	return result;
 }
 
 int

source/ngc/snes9xGX.cpp

@@ -44,6 +44,7 @@ extern "C" {
 #include "controls.h"
 
 #include "snes9xGX.h"
+#include "aram.h"
 #include "dvd.h"
 #include "smbop.h"
 #include "video.h"
@@ -213,6 +214,10 @@ main ()
 	unsigned int save_flags;
 	int selectedMenu = -1;
 
+	// Initialise video
+	InitGCVideo ();
+
+	// Controllers
 #ifdef HW_RVL
 	WPAD_Init();
 	// read wiimote accelerometer and IR data
@@ -220,8 +225,23 @@ main ()
 	WPAD_SetVRes(WPAD_CHAN_ALL,640,480);
 #endif
 
-	// Initialise video
+	PAD_Init ();
-	InitGCVideo ();
+
+	// Audio
+	AUDIO_Init (NULL);
+
+	// GC Audio RAM (for ROM and backdrop storage)
+	AR_Init (NULL, 0);
+
+	// Before going any further, let's copy any injected ROM image
+	int *romptr = (int *) 0x81000000; // location of injected rom
+
+	if (memcmp ((char *) romptr, "SNESROM0", 8) == 0)
+	{
+		ARAM_ROMSIZE = romptr[2];
+		romptr = (int *) 0x81000020;
+		ARAMPut ((char *) romptr, (char *) AR_SNESROM, ARAM_ROMSIZE);
+	}
 
 	// Initialise freetype font system
 	if (FT_Init ())

source/ngc/sram.cpp

@@ -44,8 +44,6 @@ preparesavedata (int method)
 	int offset = 0;
 	int size;
 
-	ClearSaveBuffer ();
-
 	if(method == METHOD_MC_SLOTA || method == METHOD_MC_SLOTB)
 	{
 		// Copy in save icon
@@ -154,6 +152,8 @@ LoadSRAM (int method, bool silent)
 	char filepath[1024];
 	int offset = 0;
 
+	AllocSaveBuffer ();
+
 	if(method == METHOD_SD || method == METHOD_USB)
 	{
 		ChangeFATInterface(method, NOTSILENT);
@@ -179,15 +179,23 @@ LoadSRAM (int method, bool silent)
 	{
 		decodesavedata (method, offset);
 		S9xSoftReset();
-		return 1;
 	}
 
+	FreeSaveBuffer ();
+
+	if(offset > 0)
+	{
+		return 1;
+	}
+	else
+	{
 		// if we reached here, nothing was done!
 		if(!silent)
 			WaitPrompt ((char*) "SRAM file not found");
 
 		return 0;
 	}
+}
 
 /****************************************************************************
  * Save SRAM
@@ -205,6 +213,8 @@ SaveSRAM (int method, bool silent)
 	int datasize;
 	int offset = 0;
 
+	AllocSaveBuffer ();
+
 	datasize = preparesavedata (method);
 
 	if ( datasize )
@@ -244,5 +254,7 @@ SaveSRAM (int method, bool silent)
 		if(!silent)
 			WaitPrompt((char *)"No SRAM data to save!");
 	}
+
+	FreeSaveBuffer ();
 	return retval;
 }

source/ngc/video.cpp

@@ -446,23 +446,8 @@ UpdatePadsCB ()
 void
 InitGCVideo ()
 {
-    int *romptr = (int *) 0x81000000;	// injected rom
-
 	// init video
     VIDEO_Init ();
-    PAD_Init ();
-
-    AUDIO_Init (NULL);
-    AR_Init (NULL, 0);
-
-    // Before going any further, let's copy any attached ROM image
-    if (memcmp ((char *) romptr, "SNESROM0", 8) == 0)
-    {
-        ARAM_ROMSIZE = romptr[2];
-        romptr = (int *) 0x81000020;
-        ARAMPut ((char *) romptr, (char *) AR_SNESROM, ARAM_ROMSIZE);
-    }
-
 
 	// get default video mode
 	vmode = VIDEO_GetPreferredMode(NULL);