Remove S9xChooseFilename

This is integration of the frontend with the core. Disable
the snapshot button mappings that use it. Any frontend should
implement those port commands its own.

controls.cpp

@@ -2269,11 +2269,9 @@ void S9xApplyCommand (s9xcommand_t cmd, int16 data1, int16 data2)
 						break;
 
 					case LoadFreezeFile:
-						S9xUnfreezeGame(S9xChooseFilename(TRUE));
 						break;
 
 					case SaveFreezeFile:
-						S9xFreezeGame(S9xChooseFilename(FALSE));
 						break;
 
 					case LoadOopsFile:

display.h

@@ -47,7 +47,6 @@ const char * S9xStringInput (const char *);
 const char * S9xGetDirectory (enum s9x_getdirtype);
 const char * S9xGetFilename (const char *, enum s9x_getdirtype);
 const char * S9xGetFilenameInc (const char *, enum s9x_getdirtype);
-const char * S9xChooseFilename (bool8);
 const char * S9xBasename (const char *);
 
 // Routines the port has to implement if it uses command-line

docs/porting.html

@@ -298,10 +298,6 @@ <h3><code>const char *S9xGetDirectory (enum s9x_getdirtype dirtype)</code></h3>
 		<p>
 			Called when Snes9x wants to know the directory <code>dirtype</code>.
 		</p>
-		<h3><code>const char *S9xChooseFilename (bool8 read_only)</code></h3>
-		<p>
-			If your port can match Snes9x's built-in <code>LoadFreezeFile</code>/<code>SaveFreezeFile</code> command (see <code>controls.cpp</code>), you may choose to use this function. Otherwise return <code>NULL</code>.
-		</p>
 		<h3><code>const char *S9xChooseMovieFilename (bool8 read_only)</code></h3>
 		<p>
 			If your port can match Snes9x's built-in <code>BeginRecordingMovie</code>/<code>LoadMovie</code> command (see <code>controls.cpp</code>), you may choose to use this function. Otherwise return <code>NULL</code>.

gtk/src/gtk_file.cpp

@@ -29,11 +29,6 @@ const char *S9xChooseMovieFilename(bool8 read_only)
     return path;
 }
 
-const char *S9xChooseFilename(bool8 read_only)
-{
-    return "";
-}
-
 const char *S9xGetFilenameInc(const char *e, enum s9x_getdirtype dirtype)
 {
     static char filename[PATH_MAX + 1];

libretro/libretro.cpp

@@ -2125,7 +2125,6 @@ const char* S9xGetDirectory(s9x_getdirtype type)
     return "";
 }
 void S9xInitInputDevices() {}
-const char* S9xChooseFilename(unsigned char) { return ""; }
 void S9xHandlePortCommand(s9xcommand_t, short, short) {}
 bool S9xPollButton(unsigned int, bool*) { return false; }
 void S9xToggleSoundChannel(int) {}

macosx/mac-file.mm

@@ -365,11 +365,6 @@ static void AddFolderIcon (NSURL *fref, const char *folderName)
 	return (NULL);
 }
 
-const char * S9xChooseFilename (bool8 read_only)
-{
-	return (NULL);
-}
-
 const char * S9xChooseMovieFilename (bool8 read_only)
 {
 	return (NULL);

unix/unix.cpp

@@ -588,25 +588,6 @@ const char * S9xBasename (const char *f)
 	return (f);
 }
 
-const char * S9xChooseFilename (bool8 read_only)
-{
-	char	s[PATH_MAX + 1];
-	char	drive[_MAX_DRIVE + 1], dir[_MAX_DIR + 1], fname[_MAX_FNAME + 1], ext[_MAX_EXT + 1];
-
-	const char	*filename;
-	char		title[64];
-
-	_splitpath(Memory.ROMFilename, drive, dir, fname, ext);
-	snprintf(s, PATH_MAX + 1, "%s.frz", fname);
-	sprintf(title, "%s snapshot filename", read_only ? "Select load" : "Choose save");
-
-	S9xSetSoundMute(TRUE);
-	filename = S9xSelectFilename(s, S9xGetDirectory(SNAPSHOT_DIR), "frz", title);
-	S9xSetSoundMute(FALSE);
-
-	return (filename);
-}
-
 const char * S9xChooseMovieFilename (bool8 read_only)
 {
 	char	s[PATH_MAX + 1];

win32/wsnes9x.cpp

@@ -10843,12 +10843,6 @@ void S9xHandlePortCommand(s9xcommand_t cmd, int16 data1, int16 data2)
 	return;
 }
 
-//  NYI
-const char *S9xChooseFilename (bool8 read_only)
-{
-	return NULL;
-}
-
 // NYI
 const char *S9xChooseMovieFilename (bool8 read_only)
 {