From 5930552f09758b3ad5ea890e492fa76bb579b992 Mon Sep 17 00:00:00 2001
From: Joshua Wise <joshua@rebirth.joshuawise.com>
Date: Fri, 28 Mar 2008 16:28:41 -0400
Subject: [PATCH] Add readout

---
 readout.c | 138 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 138 insertions(+)
 create mode 100644 readout.c

diff --git a/readout.c b/readout.c
new file mode 100644
index 0000000..9b92953
--- /dev/null
+++ b/readout.c
@@ -0,0 +1,138 @@
+#include <string.h>
+#include <SDL/SDL.h>
+
+#define WIN_X 1500
+#define WIN_Y 768
+
+char *readline()
+{
+	static char s[2048];
+	return gets(s);	/* Insecure, oh well, who cares, this will get replaced later */
+}
+
+struct vars {
+	char *vname, *var, *sub;
+	int val;
+};
+
+int *findvar(char *var, char *sub, struct vars *vars, int n)
+{
+	int i;
+	for (i=0; i<n; i++)
+		if (!strcmp(vars[i].var, var) && ((!sub && !vars[i].sub) || !strcmp(vars[i].sub, sub)))
+			return &vars[i].val;
+	printf("Unknown var: %s %s\n", var, sub);
+}
+
+void main()
+{
+	char *s;
+	struct vars vars[512];
+	int nvars = 0;
+	int readingdata = 0;
+	SDL_Surface *screen;
+	
+	if (SDL_Init(SDL_INIT_VIDEO) < 0)
+	{
+		printf("SDL init failed: %s\n", SDL_GetError());
+		return 1;
+	}
+	atexit(SDL_Quit);
+	screen = SDL_SetVideoMode(WIN_X, WIN_Y, 24, SDL_SWSURFACE);
+	if (!screen)
+	{
+		printf("Video init failed: %s\n", SDL_GetError());
+	}
+	
+	while ((s = readline()))
+	{
+		if (s[0] == '$')
+		{
+			if (!strcmp(s, "$dumpvars"))
+			{
+				readingdata = 1;
+				printf("Var dump begin on %d vars\n", nvars);
+			} else if (!strncmp(s, "$var", 4)) {
+				char *t;
+				char *vname, *var, *sub;\
+				t = strtok(s, " ");
+				t = strtok(NULL, " ");
+				t = strtok(NULL, " ");
+				t = strtok(NULL, " ");
+				vname = t;
+				t = strtok(NULL, " ");
+				var = t;
+				t = strtok(NULL, " ");
+				if (strcmp(t, "$end"))
+					sub = t;
+				else
+					sub = NULL;
+				printf("Found: %s -> %s %s\n", vname, var, sub);
+				
+				vars[nvars].vname = strdup(vname);
+				vars[nvars].var = strdup(var);
+				vars[nvars].sub = sub ? strdup(sub) : NULL;
+				vars[nvars].val = 0;
+				nvars++;
+			}
+		} else if (s[0] == '#')
+			;
+		else
+		{
+			int val = (s[0] == '1');
+			int i;
+			int oldclk = *findvar("gclk", NULL, vars, nvars);
+			static int pixn = 0;
+			for (i=0; i<nvars; i++)
+			{
+				if (!strcmp(vars[i].vname, s+1))
+				{
+					vars[i].val = val;
+					break;
+				}
+			}
+			if (i == nvars)
+				printf("Unknown: %s\n", s);
+			if (*findvar("gclk", NULL, vars, nvars) != oldclk && oldclk == 1 && ((pixn++) % 2))
+			{
+				static int x = 0, y = 0;
+				static int lasths;
+				unsigned char *pixp;
+				static int *r2 = NULL, *r1 = NULL, *r0 = NULL, *g2 = NULL, *g1 = NULL, *g0 = NULL, *b1 = NULL, *b0 = NULL, *vs = NULL, *hs = NULL;
+				r2 = r2 ? r2 : findvar("red", "[2]", vars, nvars);
+				r1 = r1 ? r1 : findvar("red", "[1]", vars, nvars);
+				r0 = r0 ? r0 : findvar("red", "[0]", vars, nvars);
+				g2 = g2 ? g2 : findvar("green", "[2]", vars, nvars);
+				g1 = g1 ? g1 : findvar("green", "[1]", vars, nvars);
+				g0 = g0 ? g0 : findvar("green", "[0]", vars, nvars);
+				b1 = b1 ? b1 : findvar("blue", "[1]", vars, nvars);
+				b0 = b0 ? b0 : findvar("blue", "[0]", vars, nvars);
+				vs = vs ? vs : findvar("vs", NULL, vars, nvars);
+				hs = hs ? hs : findvar("hs", NULL, vars, nvars);
+				
+				
+				int r = *r2 << 7 | *r1 << 6 | *r0 << 5;
+				int g = *g2 << 7 | *g1 << 6 | *g0 << 5;
+				int b = *b1 << 7 | *b0 << 6;
+				if (*vs)
+					y = 0;
+				else {
+					if (*hs)
+					{
+						x = 0;
+						if (!lasths)
+							y++;
+					} else
+						x++;
+				}
+				lasths = *hs;
+				SDL_LockSurface(screen);
+				pixp = screen->pixels + ((WIN_X * y + x) * 3);
+				pixp[0] = b; pixp[1] = g; pixp[2] = r;
+				SDL_UnlockSurface(screen);
+				if ((x % 5) == 4)
+					SDL_UpdateRect(screen, x/5*5, y, 5, 1);
+			}
+		}
+	}
+}
-- 
2.43.0