From 019e4d85245387b8dbffc5c6decad2f27a024c8e Mon Sep 17 00:00:00 2001
From: "fabio.olimpieri" <fabio.olimpieri@tin.it>
Date: Sun, 12 Aug 2012 15:28:08 +0000
Subject: [PATCH] 576p support

---
 src/computer.c |  1 +
 src/computer.h |  1 +
 src/emulator.c | 34 ++++++++++++++++++++++++++++++++++
 src/emulator.h |  1 +
 src/gui_sdl.c  | 24 ++++++++++++++++++------
 5 files changed, 55 insertions(+), 6 deletions(-)

diff --git a/src/computer.c b/src/computer.c
index 3019021..261784a 100644
--- a/src/computer.c
+++ b/src/computer.c
@@ -171,6 +171,7 @@ void computer_init () { //Called only on start-up
 	ordenador.fetch_state =0;
 	ordenador.last_selected_poke_file[0]='\0';
 	ordenador.npixels=4;
+	ordenador.progressive=0;
 }
 
 void computer_set_palete() {
diff --git a/src/computer.h b/src/computer.h
index 5a9e076..cbbd095 100644
--- a/src/computer.h
+++ b/src/computer.h
@@ -38,6 +38,7 @@ struct computer {
 
 	unsigned char precision; //If set 1 emulate with more precision
 	unsigned char npixels; //1, 2 or 4 depending on dblscan and zaurus_mini
+	unsigned char progressive; //interlace or progressive 576
 	unsigned int temporal_io;
 
 	// screen private global variables
diff --git a/src/emulator.c b/src/emulator.c
index e065754..8235794 100644
--- a/src/emulator.c
+++ b/src/emulator.c
@@ -45,6 +45,8 @@
 #include <ogc/usbstorage.h>
 #include <network.h>
 #include <smb.h>
+#include <stdio.h>
+#include <stdlib.h>
 #endif
 
 #ifdef DEBUG
@@ -352,6 +354,38 @@ void load_rom(char type) {
 	size=fread(ordenador.shadowrom,8192,1,fichero);
   	fclose(fichero);
 }
+
+int set_video_mode()
+{
+#ifdef GEKKO
+		GXRModeObj *rmode;
+	
+		rmode = VIDEO_GetPreferredMode(NULL);
+		
+		if ((rmode->viTVMode)!=VI_TVMODE_PAL_INT) return -1; 
+
+		switch(ordenador.progressive)
+		{
+		case 0: //interlace
+		rmode=&TVPal576IntDfScale;
+		break;
+		case 1: //progressive
+		rmode=&TVPal576ProgScale;
+		break;
+		default:
+		rmode=&TVPal576IntDfScale;
+		break;
+		}
+		VIDEO_Configure(rmode);
+		VIDEO_Flush();
+		VIDEO_WaitVSync();
+		
+		return 0;
+	
+
+		#endif 
+}		
+
 void init_sdl()
 {
 int retorno, bucle; 
diff --git a/src/emulator.h b/src/emulator.h
index d363888..39e2346 100644
--- a/src/emulator.h
+++ b/src/emulator.h
@@ -51,5 +51,6 @@ FILE *myfopen(char *filename,char *mode);
 void init_sdl();
 void init_sound();
 void init_screen(int resx,int resy,int depth,int fullscreen,int dblbuffer,int hwsurface);
+int set_video_mode();
 
 #endif
diff --git a/src/gui_sdl.c b/src/gui_sdl.c
index 93184ef..48492cf 100644
--- a/src/gui_sdl.c
+++ b/src/gui_sdl.c
@@ -101,8 +101,11 @@ static const char *screen_messages[] = {
 		/*03*/		"TV mode",
 		/*04*/		"^|Color|B&W",
 		/*05*/		"  ",
-		/*06*/		"Resolution",
-		/*07*/		"^|640X480|320X240",		
+		/*06*/		"Buffer resolution",
+		/*07*/		"^|640X480|320X240",
+		/*08*/		"  ",
+		/*09*/		"576p video mode",
+		/*10*/		"^|on|off",
 		NULL
 };
 
@@ -409,7 +412,6 @@ static void manage_tape(int which)
 	case 5: //Create
 		// Create tape 
 		create_tapfile_sdl();
-		//msgInfo("Not yet implemented",3000,NULL);
 		break;	
 	case 6: //Delete
 		delete_tape();
@@ -541,7 +543,7 @@ static void save_load_general_configurations(int);
 
 static void screen_settings(void)
 {
-	unsigned int submenus[3],submenus_old[3];
+	unsigned int submenus[4],submenus_old[4];
 	int opt, i;
 	
 	memset(submenus, 0, sizeof(submenus));
@@ -549,8 +551,9 @@ static void screen_settings(void)
 	submenus[0] = !ordenador.dblscan;
 	submenus[1] = ordenador.bw;
 	submenus[2] = ordenador.zaurus_mini?1:0;
+	submenus[3] = !ordenador.progressive;
 	
-	for (i=0; i<3; i++) submenus_old[i] = submenus[i];
+	for (i=0; i<4; i++) submenus_old[i] = submenus[i];
 	
 	
 	opt = menu_select_title("Screen settings menu",
@@ -560,6 +563,7 @@ static void screen_settings(void)
 	
 	ordenador.dblscan = !submenus[0];
 	ordenador.bw = submenus[1]; 
+	ordenador.progressive = !submenus[3];
 	
 	if (submenus[0] != submenus_old[0]) update_npixels();
 	
@@ -571,7 +575,15 @@ static void screen_settings(void)
 		else {ordenador.zaurus_mini = 3; ordenador.text_mini=1;}
 		update_npixels();
 	    restart_video();
-	}	
+	}
+	if (submenus[3] != submenus_old[3])
+	{
+		if (set_video_mode()) 
+		{
+		msgInfo("Only avalaible from 576i PAL",3000,NULL);
+		ordenador.progressive = 0;
+		}
+	}
 }
 
 static void setup_joystick(int joy, unsigned int sdl_key, int joy_key)