frontend: add chan display option, for fun mostly

4 files changed, 39 insertions, 1 deletions

diff --git a/frontend/main.c b/frontend/main.c
index 13be9ac..b17df53 100644
--- a/frontend/main.c
+++ b/frontend/main.c
@@ -476,7 +476,9 @@ int emu_save_state(int slot)
 	if (ret != 0)
 		return ret;
 
-	return SaveState(fname);
+	ret = SaveState(fname);
+	printf("* %s \"%s\" [%d]\n", ret == 0 ? "saved" : "failed to save", fname, slot);
+	return ret;
 }
 
 int emu_load_state(int slot)
diff --git a/frontend/menu.c b/frontend/menu.c
index dee0159..2b9c155 100644
--- a/frontend/menu.c
+++ b/frontend/menu.c
@@ -1143,6 +1143,8 @@ static int menu_loop_plugin_options(int id, int keys)
 
 static const char *men_cfg_cdrr[] = { "Auto", "ON", "OFF", NULL };
 static const char h_cfg_cpul[]   = "Shows CPU usage in %";
+static const char h_cfg_spu[]    = "Shows active SPU channels\n"
+				   "(green: normal, red: fmod, blue: noise)";
 static const char h_cfg_fl[]     = "Frame Limiter keeps the game from running too fast";
 static const char h_cfg_xa[]     = "Disables XA sound, which can sometimes improve performance";
 static const char h_cfg_cdda[]   = "Disable CD Audio for a performance boost\n"
@@ -1161,6 +1163,7 @@ static const char h_cfg_nodrc[]  = "Disable dynamic recompiler and use interpret
 static menu_entry e_menu_adv_options[] =
 {
 	mee_onoff_h   ("Show CPU load",          0, g_opts, OPT_SHOWCPU, h_cfg_cpul),
+	mee_onoff_h   ("Show SPU channels",      0, g_opts, OPT_SHOWSPU, h_cfg_spu),
 	mee_onoff_h   ("Disable Frame Limiter",  0, g_opts, OPT_NO_FRAMELIM, h_cfg_fl),
 	mee_onoff_h   ("Disable XA Decoding",    0, Config.Xa, 1, h_cfg_xa),
 	mee_onoff_h   ("Disable CD Audio",       0, Config.Cdda, 1, h_cfg_cdda),
diff --git a/frontend/menu.h b/frontend/menu.h
index d8aa892..7e401a3 100644
--- a/frontend/menu.h
+++ b/frontend/menu.h
@@ -9,6 +9,7 @@ enum opts {
 	OPT_SHOWFPS = 1 << 0,
 	OPT_SHOWCPU = 1 << 1,
 	OPT_NO_FRAMELIM = 1 << 2,
+	OPT_SHOWSPU = 1 << 3,
 };
 
 extern int g_opts;
diff --git a/frontend/plugin_lib.c b/frontend/plugin_lib.c
index 58c67d2..8d5605f 100644
--- a/frontend/plugin_lib.c
+++ b/frontend/plugin_lib.c
@@ -74,6 +74,35 @@ static void print_cpu_usage(void)
 		pl_text_out16(pl_fbdev_w - 28, pl_fbdev_h - 10, "%3d", tick_per_sec);
 }
 
+// draw 192x8 status of 24 sound channels
+static __attribute__((noinline)) void draw_active_chans(void)
+{
+	extern void spu_get_debug_info(int *chans_out, int *fmod_chans_out, int *noise_chans_out); // hack
+	int live_chans, fmod_chans, noise_chans;
+
+	static const unsigned short colors[2] = { 0x1fe3, 0x0700 };
+	unsigned short *dest = (unsigned short *)pl_fbdev_buf +
+		pl_fbdev_w * (pl_fbdev_h - 10) + pl_fbdev_w / 2 - 192/2;
+	unsigned short *d, p;
+	int c, x, y;
+
+	if (pl_fbdev_bpp != 16)
+		return;
+
+	spu_get_debug_info(&live_chans, &fmod_chans, &noise_chans);
+
+	for (c = 0; c < 24; c++) {
+		d = dest + c * 8;
+		p = !(live_chans & (1<<c)) ? 0 :
+		     (fmod_chans & (1<<c)) ? 0xf000 :
+		     (noise_chans & (1<<c)) ? 0x001f :
+		     colors[c & 1];
+		for (y = 0; y < 8; y++, d += pl_fbdev_w)
+			for (x = 0; x < 8; x++)
+				d[x] = p;
+	}
+}
+
 void *pl_fbdev_set_mode(int w, int h, int bpp)
 {
 	void *ret;
@@ -102,6 +131,9 @@ void *pl_fbdev_flip(void)
 	flip_cnt++;
 
 	if (pl_fbdev_buf != NULL) {
+		if (g_opts & OPT_SHOWSPU)
+			draw_active_chans();
+
 		if (hud_msg[0] != 0)
 			print_hud();
 		else if (g_opts & OPT_SHOWFPS)