Option for default scaler and audio filters in INI file.

MiSTer.ini

@@ -144,3 +144,7 @@ shared_folder=
 ;spinner_vid=0x1BCF
 ;spinner_pid=0x0005
 ;spinner_throttle=-50
+
+; Default filters for video scaler and audio. Paths must be relative to scaler/audio filter filders without leading slash.
+;vfilter_default=LCD_Effect/07.txt
+;afilter_default=LPF2000_3tap.txt

audio.cpp

@@ -209,6 +209,11 @@ void load_volume()
 	if (!FileLoadConfig(filter_cfg_path, &filter_cfg, sizeof(filter_cfg) - 1) || filter_cfg[0] > 1)
 	{
 		memset(filter_cfg, 0, sizeof(filter_cfg));
+		if (cfg.afilter_default[0])
+		{
+			strcpy(filter_cfg + 1, cfg.afilter_default);
+			filter_cfg[0] = 1;
+		}
 	}
 
 	FileLoadConfig("Volume.dat", &vol_att, 1);

cfg.cpp

@@ -79,6 +79,8 @@ static const ini_var_t ini_vars[] =
 	{ "SPINNER_VID", (void*)(&(cfg.spinner_vid)), UINT16, 0, 0xFFFF },
 	{ "SPINNER_PID", (void*)(&(cfg.spinner_pid)), UINT16, 0, 0xFFFF },
 	{ "SPINNER_THROTTLE", (void*)(&(cfg.spinner_throttle)), INT32, -10000, 10000 },
+	{ "AFILTER_DEFAULT", (void*)(&(cfg.afilter_default)), STRING, 0, sizeof(cfg.afilter_default) - 1 },
+	{ "VFILTER_DEFAULT", (void*)(&(cfg.vfilter_default)), STRING, 0, sizeof(cfg.vfilter_default) - 1 },
 };
 
 static const int nvars = (int)(sizeof(ini_vars) / sizeof(ini_var_t));

cfg.h

@@ -57,6 +57,8 @@ typedef struct {
 	char font[1024];
 	char shared_folder[1024];
 	char custom_aspect_ratio[2][16];
+	char afilter_default[1023];
+	char vfilter_default[1023];
 } cfg_t;
 
 extern cfg_t cfg;

video.cpp

@@ -319,6 +319,11 @@ static void loadScalerCfg()
 	if (!FileLoadConfig(scaler_cfg, &scaler_flt_cfg, sizeof(scaler_flt_cfg) - 1) || scaler_flt_cfg[0]>4)
 	{
 		memset(scaler_flt_cfg, 0, sizeof(scaler_flt_cfg));
+		if (cfg.vfilter_default[0])
+		{
+			strcpy(scaler_flt_cfg+1, cfg.vfilter_default);
+			scaler_flt_cfg[0] = 1;
+		}
 	}
 }