menu: don't override region, fix P.E.Op.S. frameskip

[pcsx_rearmed.git] / frontend / menu.c

/*
 * (C) Gražvydas "notaz" Ignotas, 2010-2011
 *
 * This work is licensed under the terms of any of these licenses
 * (at your option):
 *  - GNU GPL, version 2 or later.
 *  - GNU LGPL, version 2.1 or later.
 * See the COPYING file in the top-level directory.
 */

#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <dlfcn.h>
#include <zlib.h>

#include "main.h"
#include "menu.h"
#include "config.h"
#include "plugin.h"
#include "plugin_lib.h"
#include "omap.h"
#include "common/plat.h"
#include "../libpcsxcore/misc.h"
#include "../libpcsxcore/new_dynarec/new_dynarec.h"
#include "revision.h"

#define MENU_X2 1
#define array_size(x) (sizeof(x) / sizeof(x[0]))

typedef enum
{
	MA_NONE = 1,
	MA_MAIN_RESUME_GAME,
	MA_MAIN_SAVE_STATE,
	MA_MAIN_LOAD_STATE,
	MA_MAIN_RESET_GAME,
	MA_MAIN_LOAD_ROM,
	MA_MAIN_RUN_BIOS,
	MA_MAIN_CONTROLS,
	MA_MAIN_CREDITS,
	MA_MAIN_EXIT,
	MA_CTRL_PLAYER1,
	MA_CTRL_PLAYER2,
	MA_CTRL_EMU,
	MA_CTRL_DEV_FIRST,
	MA_CTRL_DEV_NEXT,
	MA_CTRL_DONE,
	MA_OPT_SAVECFG,
	MA_OPT_SAVECFG_GAME,
	MA_OPT_CPU_CLOCKS,
	MA_OPT_FILTERING,
} menu_id;

enum {
	SCALE_1_1,
	SCALE_4_3,
	SCALE_FULLSCREEN,
	SCALE_CUSTOM,
};

static int last_psx_w, last_psx_h, last_psx_bpp;
static int scaling, filter, state_slot, cpu_clock, cpu_clock_st;
static char rom_fname_reload[MAXPATHLEN];
static char last_selected_fname[MAXPATHLEN];
static int region;
int g_opts;

// from softgpu plugin
extern int iUseDither;
extern int UseFrameSkip;
extern uint32_t dwActFixes;
extern float fFrameRateHz;
extern int dwFrameRateTicks;

// sound plugin
extern int iUseReverb;
extern int iUseInterpolation;
extern int iXAPitch;
extern int iSPUIRQWait;
extern int iUseTimer;

static const char *bioses[24];
static const char *gpu_plugins[16];
static const char *spu_plugins[16];
static int bios_sel, gpu_plugsel, spu_plugsel;


static int min(int x, int y) { return x < y ? x : y; }
static int max(int x, int y) { return x > y ? x : y; }

void emu_make_path(char *buff, const char *end, int size)
{
	int pos, end_len;

	end_len = strlen(end);
	pos = plat_get_root_dir(buff, size);
	strncpy(buff + pos, end, size - pos);
	buff[size - 1] = 0;
	if (pos + end_len > size - 1)
		printf("Warning: path truncated: %s\n", buff);
}

static int emu_check_save_file(int slot)
{
	char fname[MAXPATHLEN];
	int ret;

	ret = get_state_filename(fname, sizeof(fname), slot);
	if (ret != 0)
		return 0;

	ret = CheckState(fname);
	return ret == 0 ? 1 : 0;
}

static int emu_save_load_game(int load, int sram)
{
	char fname[MAXPATHLEN];
	int ret;

	ret = get_state_filename(fname, sizeof(fname), state_slot);
	if (ret != 0)
		return 0;

	if (load) {
		ret = LoadState(fname);

		// reflect hle/bios mode from savestate
		if (Config.HLE)
			bios_sel = 0;
		else if (bios_sel == 0 && bioses[1] != NULL)
			// XXX: maybe find the right bios instead
			bios_sel = 1;
	}
	else
		ret = SaveState(fname);

	return ret;
}

// propagate menu settings to the emu vars
static void menu_sync_config(void)
{
	Config.PsxAuto = 1;
	if (region > 0) {
		Config.PsxAuto = 0;
		Config.PsxType = region - 1;
	}
	pl_frame_interval = Config.PsxType ? 20000 : 16667;

	// used by P.E.Op.S. frameskip code
	fFrameRateHz = Config.PsxType ? 50.0f : 59.94f;
	dwFrameRateTicks = (100000*100 / (unsigned long)(fFrameRateHz*100));
}

static void menu_set_defconfig(void)
{
	g_opts = 0;
	scaling = SCALE_4_3;

	region = 0;
	Config.Xa = Config.Cdda = Config.Sio =
	Config.SpuIrq = Config.RCntFix = Config.VSyncWA = 0;

	iUseDither = UseFrameSkip = 0;
	dwActFixes = 1<<7;

	iUseReverb = 2;
	iUseInterpolation = 1;
	iXAPitch = iSPUIRQWait = 0;
	iUseTimer = 2;

	menu_sync_config();
}

#define CE_CONFIG_STR(val) \
	{ #val, 0, Config.val }

#define CE_CONFIG_VAL(val) \
	{ #val, sizeof(Config.val), &Config.val }

#define CE_STR(val) \
	{ #val, 0, val }

#define CE_INTVAL(val) \
	{ #val, sizeof(val), &val }

static const struct {
	const char *name;
	size_t len;
	void *val;
} config_data[] = {
	CE_CONFIG_STR(Bios),
	CE_CONFIG_STR(Gpu),
	CE_CONFIG_STR(Spu),
//	CE_CONFIG_STR(Cdr),
	CE_CONFIG_VAL(Xa),
	CE_CONFIG_VAL(Sio),
	CE_CONFIG_VAL(Mdec),
	CE_CONFIG_VAL(Cdda),
	CE_CONFIG_VAL(Debug),
	CE_CONFIG_VAL(PsxOut),
	CE_CONFIG_VAL(SpuIrq),
	CE_CONFIG_VAL(RCntFix),
	CE_CONFIG_VAL(VSyncWA),
	CE_CONFIG_VAL(Cpu),
	CE_INTVAL(region),
	CE_INTVAL(scaling),
	CE_INTVAL(g_layer_x),
	CE_INTVAL(g_layer_y),
	CE_INTVAL(g_layer_w),
	CE_INTVAL(g_layer_h),
	CE_INTVAL(filter),
	CE_INTVAL(state_slot),
	CE_INTVAL(cpu_clock),
	CE_INTVAL(g_opts),
	CE_INTVAL(iUseDither),
	CE_INTVAL(UseFrameSkip),
	CE_INTVAL(dwActFixes),
	CE_INTVAL(iUseReverb),
	CE_INTVAL(iUseInterpolation),
	CE_INTVAL(iXAPitch),
	CE_INTVAL(iSPUIRQWait),
	CE_INTVAL(iUseTimer),
};

static char *get_cd_label(void)
{
	static char trimlabel[33];
	int j;

	strncpy(trimlabel, CdromLabel, 32);
	trimlabel[32] = 0;
	for (j = 31; j >= 0; j--)
		if (trimlabel[j] == ' ')
			trimlabel[j] = 0;

	return trimlabel;
}

static void make_cfg_fname(char *buf, size_t size, int is_game)
{
	if (is_game)
		snprintf(buf, size, "." PCSX_DOT_DIR "cfg/%.32s-%.9s.cfg", get_cd_label(), CdromId);
	else
		snprintf(buf, size, "." PCSX_DOT_DIR "%s", cfgfile_basename);
}

static int menu_write_config(int is_game)
{
	char cfgfile[MAXPATHLEN];
	FILE *f;
	int i;

	make_cfg_fname(cfgfile, sizeof(cfgfile), is_game);
	f = fopen(cfgfile, "w");
	if (f == NULL) {
		printf("menu_write_config: failed to open: %s\n", cfgfile);
		return -1;
	}

	for (i = 0; i < ARRAY_SIZE(config_data); i++) {
		fprintf(f, "%s = ", config_data[i].name);
		switch (config_data[i].len) {
		case 0:
			fprintf(f, "%s\n", (char *)config_data[i].val);
			break;
		case 1:
			fprintf(f, "%x\n", *(u8 *)config_data[i].val);
			break;
		case 2:
			fprintf(f, "%x\n", *(u16 *)config_data[i].val);
			break;
		case 4:
			fprintf(f, "%x\n", *(u32 *)config_data[i].val);
			break;
		default:
			printf("menu_write_config: unhandled len %d for %s\n",
				 config_data[i].len, config_data[i].name);
			break;
		}
	}

	if (!is_game)
		fprintf(f, "lastcdimg = %s\n", last_selected_fname);

	fclose(f);
	return 0;
}

static void parse_str_val(char *cval, const char *src)
{
	char *tmp;
	strncpy(cval, src, MAXPATHLEN);
	cval[MAXPATHLEN - 1] = 0;
	tmp = strchr(cval, '\n');
	if (tmp == NULL)
		tmp = strchr(cval, '\r');
	if (tmp != NULL)
		*tmp = 0;
}

static int menu_load_config(int is_game)
{
	char cfgfile[MAXPATHLEN];
	int i, ret = -1;
	long size;
	char *cfg;
	FILE *f;

	make_cfg_fname(cfgfile, sizeof(cfgfile), is_game);
	f = fopen(cfgfile, "r");
	if (f == NULL) {
		printf("menu_load_config: failed to open: %s\n", cfgfile);
		return -1;
	}

	fseek(f, 0, SEEK_END);
	size = ftell(f);
	if (size <= 0) {
		printf("bad size %ld: %s\n", size, cfgfile);
		goto fail;
	}

	cfg = malloc(size + 1);
	if (cfg == NULL)
		goto fail;

	fseek(f, 0, SEEK_SET);
	if (fread(cfg, 1, size, f) != size) {
		printf("failed to read: %s\n", cfgfile);
		goto fail_read;
	}
	cfg[size] = 0;

	for (i = 0; i < ARRAY_SIZE(config_data); i++) {
		char *tmp, *tmp2;
		u32 val;

		tmp = strstr(cfg, config_data[i].name);
		if (tmp == NULL)
			continue;
		tmp += strlen(config_data[i].name);
		if (strncmp(tmp, " = ", 3) != 0)
			continue;
		tmp += 3;

		if (config_data[i].len == 0) {
			parse_str_val(config_data[i].val, tmp);
			continue;
		}

		tmp2 = NULL;
		val = strtoul(tmp, &tmp2, 16);
		if (tmp2 == NULL || tmp == tmp2)
			continue; // parse failed

		switch (config_data[i].len) {
		case 1:
			*(u8 *)config_data[i].val = val;
			break;
		case 2:
			*(u16 *)config_data[i].val = val;
			break;
		case 4:
			*(u32 *)config_data[i].val = val;
			break;
		default:
			printf("menu_load_config: unhandled len %d for %s\n",
				 config_data[i].len, config_data[i].name);
			break;
		}
	}

	if (!is_game) {
		char *tmp = strstr(cfg, "lastcdimg = ");
		if (tmp != NULL) {
			tmp += 12;
			parse_str_val(last_selected_fname, tmp);
		}
	}

	menu_sync_config();

	// sync plugins
	for (i = bios_sel = 0; bioses[i] != NULL; i++)
		if (strcmp(Config.Bios, bioses[i]) == 0)
			{ bios_sel = i; break; }

	for (i = gpu_plugsel = 0; gpu_plugins[i] != NULL; i++)
		if (strcmp(Config.Gpu, gpu_plugins[i]) == 0)
			{ gpu_plugsel = i; break; }

	for (i = spu_plugsel = 0; spu_plugins[i] != NULL; i++)
		if (strcmp(Config.Spu, spu_plugins[i]) == 0)
			{ spu_plugsel = i; break; }

	ret = 0;
fail_read:
	free(cfg);
fail:
	fclose(f);
	return ret;
}

// rrrr rggg gggb bbbb
static unsigned short fname2color(const char *fname)
{
	static const char *cdimg_exts[] = { ".bin", ".img", ".iso", ".cue", ".z", ".bz", ".znx", ".pbp" };
	static const char *other_exts[] = { ".ccd", ".toc", ".mds", ".sub", ".table", ".index" };
	const char *ext = strrchr(fname, '.');
	int i;

	if (ext == NULL)
		return 0xffff;
	for (i = 0; i < array_size(cdimg_exts); i++)
		if (strcasecmp(ext, cdimg_exts[i]) == 0)
			return 0x7bff;
	for (i = 0; i < array_size(other_exts); i++)
		if (strcasecmp(ext, other_exts[i]) == 0)
			return 0xa514;
	return 0xffff;
}

static void draw_savestate_bg(int slot);

#define MENU_ALIGN_LEFT
#define menu_init menu_init_common
#include "common/menu.c"
#undef menu_init

// a bit of black magic here
static void draw_savestate_bg(int slot)
{
	extern void bgr555_to_rgb565(void *dst, void *src, int bytes);
	static const int psx_widths[8]  = { 256, 368, 320, 384, 512, 512, 640, 640 };
	int x, y, w, h;
	char fname[MAXPATHLEN];
	GPUFreeze_t *gpu;
	u16 *s, *d;
	gzFile f;
	int ret;
	u32 tmp;

	ret = get_state_filename(fname, sizeof(fname), slot);
	if (ret != 0)
		return;

	f = gzopen(fname, "rb");
	if (f == NULL)
		return;

	if (gzseek(f, 0x29933d, SEEK_SET) != 0x29933d) {
		fprintf(stderr, "gzseek failed\n");
		gzclose(f);
		return;
	}

	gpu = malloc(sizeof(*gpu));
	if (gpu == NULL) {
		gzclose(f);
		return;
	}

	ret = gzread(f, gpu, sizeof(*gpu));
	gzclose(f);
	if (ret != sizeof(*gpu)) {
		fprintf(stderr, "gzread failed\n");
		goto out;
	}

	memcpy(g_menubg_ptr, g_menubg_src_ptr, g_menuscreen_w * g_menuscreen_h * 2);

	if ((gpu->ulStatus & 0x800000) || (gpu->ulStatus & 0x200000))
		goto out; // disabled || 24bpp (NYET)

	x = gpu->ulControl[5] & 0x3ff;
	y = (gpu->ulControl[5] >> 10) & 0x1ff;
	s = (u16 *)gpu->psxVRam + y * 1024 + (x & ~3);
	w = psx_widths[(gpu->ulStatus >> 16) & 7];
	tmp = gpu->ulControl[7];
	h = ((tmp >> 10) & 0x3ff) - (tmp & 0x3ff);
	if (gpu->ulStatus & 0x80000) // doubleheight
		h *= 2;

	x = max(0, g_menuscreen_w - w) & ~3;
	y = max(0, g_menuscreen_h / 2 - h / 2);
	w = min(g_menuscreen_w, w);
	h = min(g_menuscreen_h, h);
	d = (u16 *)g_menubg_ptr + g_menuscreen_w * y + x;

	for (; h > 0; h--, d += g_menuscreen_w, s += 1024)
		bgr555_to_rgb565(d, s, w * 2);

out:
	free(gpu);
}

// ---------- pandora specific -----------

static const char pnd_script_base[] = "sudo -n /usr/pandora/scripts";
static char **pnd_filter_list;

static int get_cpu_clock(void)
{
	FILE *f;
	int ret = 0;
	f = fopen("/proc/pandora/cpu_mhz_max", "r");
	if (f) {
		fscanf(f, "%d", &ret);
		fclose(f);
	}
	return ret;
}

static void apply_cpu_clock(void)
{
	char buf[128];

	if (cpu_clock != 0 && cpu_clock != get_cpu_clock()) {
		snprintf(buf, sizeof(buf), "unset DISPLAY; echo y | %s/op_cpuspeed.sh %d",
			 pnd_script_base, cpu_clock);
		system(buf);
	}
}

static void apply_filter(int which)
{
	static int old = -1;
	char buf[128];
	int i;

	if (pnd_filter_list == NULL || which == old)
		return;

	for (i = 0; i < which; i++)
		if (pnd_filter_list[i] == NULL)
			return;

	if (pnd_filter_list[i] == NULL)
		return;

	snprintf(buf, sizeof(buf), "%s/op_videofir.sh %s", pnd_script_base, pnd_filter_list[i]);
	system(buf);
	old = which;
}

static menu_entry e_menu_gfx_options[];

static void pnd_menu_init(void)
{
	struct dirent *ent;
	int i, count = 0;
	char **mfilters;
	char buff[64];
	DIR *dir;

	cpu_clock_st = cpu_clock = get_cpu_clock();

	dir = opendir("/etc/pandora/conf/dss_fir");
	if (dir == NULL) {
		perror("filter opendir");
		return;
	}

	while (1) {
		errno = 0;
		ent = readdir(dir);
		if (ent == NULL) {
			if (errno != 0)
				perror("readdir");
			break;
		}

		if (ent->d_type != DT_REG && ent->d_type != DT_LNK)
			continue;

		count++;
	}

	if (count == 0)
		return;

	mfilters = calloc(count + 1, sizeof(mfilters[0]));
	if (mfilters == NULL)
		return;

	rewinddir(dir);
	for (i = 0; (ent = readdir(dir)); ) {
		size_t len;

		if (ent->d_type != DT_REG && ent->d_type != DT_LNK)
			continue;

		len = strlen(ent->d_name);

		// skip pre-HF5 extra files
		if (len >= 3 && strcmp(ent->d_name + len - 3, "_v3") == 0)
			continue;
		if (len >= 3 && strcmp(ent->d_name + len - 3, "_v5") == 0)
			continue;

		// have to cut "_up_h" for pre-HF5
		if (len > 5 && strcmp(ent->d_name + len - 5, "_up_h") == 0)
			len -= 5;

		if (len > sizeof(buff) - 1)
			continue;

		strncpy(buff, ent->d_name, len);
		buff[len] = 0;
		mfilters[i] = strdup(buff);
		if (mfilters[i] != NULL)
			i++;
	}
	closedir(dir);

	i = me_id2offset(e_menu_gfx_options, MA_OPT_FILTERING);
	e_menu_gfx_options[i].data = (void *)mfilters;
	pnd_filter_list = mfilters;
}

void menu_finish(void)
{
	cpu_clock = cpu_clock_st;
	apply_cpu_clock();
}

// -------------- key config --------------

me_bind_action me_ctrl_actions[] =
{
	{ "UP      ", 1 << DKEY_UP},
	{ "DOWN    ", 1 << DKEY_DOWN },
	{ "LEFT    ", 1 << DKEY_LEFT },
	{ "RIGHT   ", 1 << DKEY_RIGHT },
	{ "TRIANGLE", 1 << DKEY_TRIANGLE },
	{ "CIRCLE  ", 1 << DKEY_CIRCLE },
	{ "CROSS   ", 1 << DKEY_CROSS },
	{ "SQUARE  ", 1 << DKEY_SQUARE },
	{ "L1      ", 1 << DKEY_L1 },
	{ "R1      ", 1 << DKEY_R1 },
	{ "L2      ", 1 << DKEY_L2 },
	{ "R2      ", 1 << DKEY_R2 },
	{ "START   ", 1 << DKEY_START },
	{ "SELECT  ", 1 << DKEY_SELECT },
	{ NULL,       0 }
};

me_bind_action emuctrl_actions[] =
{
/*
	{ "Load State       ", PEV_STATE_LOAD },
	{ "Save State       ", PEV_STATE_SAVE },
	{ "Prev Save Slot   ", PEV_SSLOT_PREV },
	{ "Next Save Slot   ", PEV_SSLOT_NEXT },
*/
	{ "Enter Menu       ", PEV_MENU },
	{ NULL,                0 }
};

static int key_config_loop_wrap(int id, int keys)
{
	switch (id) {
		case MA_CTRL_PLAYER1:
			key_config_loop(me_ctrl_actions, array_size(me_ctrl_actions) - 1, 0);
			break;
		case MA_CTRL_PLAYER2:
			key_config_loop(me_ctrl_actions, array_size(me_ctrl_actions) - 1, 1);
			break;
		case MA_CTRL_EMU:
			key_config_loop(emuctrl_actions, array_size(emuctrl_actions) - 1, -1);
			break;
		default:
			break;
	}
	return 0;
}

static const char *mgn_dev_name(int id, int *offs)
{
	const char *name = NULL;
	static int it = 0;

	if (id == MA_CTRL_DEV_FIRST)
		it = 0;

	for (; it < IN_MAX_DEVS; it++) {
		name = in_get_dev_name(it, 1, 1);
		if (name != NULL)
			break;
	}

	it++;
	return name;
}

static const char *mgn_saveloadcfg(int id, int *offs)
{
	return "";
}

static int mh_savecfg(int id, int keys)
{
	if (menu_write_config(id == MA_OPT_SAVECFG_GAME ? 1 : 0) == 0)
		me_update_msg("config saved");
	else
		me_update_msg("failed to write config");

	return 1;
}

static menu_entry e_menu_keyconfig[] =
{
	mee_handler_id("Player 1",          MA_CTRL_PLAYER1,    key_config_loop_wrap),
	mee_handler_id("Player 2",          MA_CTRL_PLAYER2,    key_config_loop_wrap),
	mee_handler_id("Emulator controls", MA_CTRL_EMU,        key_config_loop_wrap),
//	mee_cust_nosave("Save global config",       MA_OPT_SAVECFG, mh_savecfg, mgn_saveloadcfg),
//	mee_cust_nosave("Save cfg for loaded game", MA_OPT_SAVECFG_GAME, mh_savecfg, mgn_saveloadcfg),
	mee_label     (""),
	mee_label     ("Input devices:"),
	mee_label_mk  (MA_CTRL_DEV_FIRST, mgn_dev_name),
	mee_label_mk  (MA_CTRL_DEV_NEXT,  mgn_dev_name),
	mee_label_mk  (MA_CTRL_DEV_NEXT,  mgn_dev_name),
	mee_label_mk  (MA_CTRL_DEV_NEXT,  mgn_dev_name),
	mee_label_mk  (MA_CTRL_DEV_NEXT,  mgn_dev_name),
	mee_label_mk  (MA_CTRL_DEV_NEXT,  mgn_dev_name),
	mee_label_mk  (MA_CTRL_DEV_NEXT,  mgn_dev_name),
	mee_end,
};

static int menu_loop_keyconfig(int id, int keys)
{
	static int sel = 0;

//	me_enable(e_menu_keyconfig, MA_OPT_SAVECFG_GAME, ready_to_go && CdromId[0]);
	me_loop(e_menu_keyconfig, &sel, NULL);
	return 0;
}

// ------------ gfx options menu ------------

static const char *men_scaler[] = { "1x1", "scaled 4:3", "fullscreen", "custom", NULL };
static const char h_cscaler[]   = "Displays the scaler layer, you can resize it\n"
				  "using d-pad or move it using R+d-pad";
static const char *men_dummy[] = { NULL };

static int menu_loop_cscaler(int id, int keys)
{
	unsigned int inp;

	scaling = SCALE_CUSTOM;

	omap_enable_layer(1);

	for (;;)
	{
		menu_draw_begin(0);
		memset(g_menuscreen_ptr, 4, g_menuscreen_w * g_menuscreen_h * 2);
		text_out16(2, 2, "%d,%d", g_layer_x, g_layer_y);
		text_out16(2, 480 - 18, "%dx%d | d-pad: resize, R+d-pad: move",	g_layer_w, g_layer_h);
		menu_draw_end();

		inp = in_menu_wait(PBTN_UP|PBTN_DOWN|PBTN_LEFT|PBTN_RIGHT|PBTN_R|PBTN_MOK|PBTN_MBACK, 40);
		if (inp & PBTN_UP)    g_layer_y--;
		if (inp & PBTN_DOWN)  g_layer_y++;
		if (inp & PBTN_LEFT)  g_layer_x--;
		if (inp & PBTN_RIGHT) g_layer_x++;
		if (!(inp & PBTN_R)) {
			if (inp & PBTN_UP)    g_layer_h += 2;
			if (inp & PBTN_DOWN)  g_layer_h -= 2;
			if (inp & PBTN_LEFT)  g_layer_w += 2;
			if (inp & PBTN_RIGHT) g_layer_w -= 2;
		}
		if (inp & (PBTN_MOK|PBTN_MBACK))
			break;

		if (inp & (PBTN_UP|PBTN_DOWN|PBTN_LEFT|PBTN_RIGHT)) {
			if (g_layer_x < 0)   g_layer_x = 0;
			if (g_layer_x > 640) g_layer_x = 640;
			if (g_layer_y < 0)   g_layer_y = 0;
			if (g_layer_y > 420) g_layer_y = 420;
			if (g_layer_w < 160) g_layer_w = 160;
			if (g_layer_h < 60)  g_layer_h = 60;
			if (g_layer_x + g_layer_w > 800)
				g_layer_w = 800 - g_layer_x;
			if (g_layer_y + g_layer_h > 480)
				g_layer_h = 480 - g_layer_y;
			omap_enable_layer(1);
		}
	}

	omap_enable_layer(0);

	return 0;
}

static menu_entry e_menu_gfx_options[] =
{
	mee_enum      ("Scaler",                   0, scaling, men_scaler),
	mee_enum      ("Filter",                   MA_OPT_FILTERING, filter, men_dummy),
//	mee_onoff     ("Vsync",                    0, vsync, 1),
	mee_cust_h    ("Setup custom scaler",      0, menu_loop_cscaler, NULL, h_cscaler),
	mee_end,
};

static int menu_loop_gfx_options(int id, int keys)
{
	static int sel = 0;

	me_loop(e_menu_gfx_options, &sel, NULL);

	return 0;
}

// ------------ bios/plugins ------------

static const char *men_gpu_dithering[] = { "None", "Game dependant", "Always", NULL };
static const char h_gpu_0[]            = "Needed for Chrono Cross";
static const char h_gpu_1[]            = "Capcom fighting games";
static const char h_gpu_2[]            = "Black screens in Lunar";
static const char h_gpu_3[]            = "Compatibility mode";
static const char h_gpu_6[]            = "Pandemonium 2";
static const char h_gpu_7[]            = "Skip every second frame";
static const char h_gpu_8[]            = "Needed by Dark Forces";
static const char h_gpu_9[]            = "better g-colors, worse textures";
static const char h_gpu_10[]           = "Toggle busy flags after drawing";

static menu_entry e_menu_plugin_gpu[] =
{
	mee_enum      ("Dithering",                  0, iUseDither, men_gpu_dithering),
	mee_onoff_h   ("Odd/even bit hack",          0, dwActFixes, 1<<0, h_gpu_0),
	mee_onoff_h   ("Expand screen width",        0, dwActFixes, 1<<1, h_gpu_1),
	mee_onoff_h   ("Ignore brightness color",    0, dwActFixes, 1<<2, h_gpu_2),
	mee_onoff_h   ("Disable coordinate check",   0, dwActFixes, 1<<3, h_gpu_3),
	mee_onoff_h   ("Lazy screen update",         0, dwActFixes, 1<<6, h_gpu_6),
	mee_onoff_h   ("Old frame skipping",         0, dwActFixes, 1<<7, h_gpu_7),
	mee_onoff_h   ("Repeated flat tex triangles ",0,dwActFixes, 1<<8, h_gpu_8),
	mee_onoff_h   ("Draw quads with triangles",  0, dwActFixes, 1<<9, h_gpu_9),
	mee_onoff_h   ("Fake 'gpu busy' states",     0, dwActFixes, 1<<10, h_gpu_10),
	mee_end,
};

static int menu_loop_plugin_gpu(int id, int keys)
{
	static int sel = 0;
	me_loop(e_menu_plugin_gpu, &sel, NULL);
	return 0;
}

static const char *men_spu_reverb[] = { "Off", "Fake", "On", NULL };
static const char *men_spu_interp[] = { "None", "Simple", "Gaussian", "Cubic", NULL };
static const char h_spu_irq_wait[]  = "Wait for CPU; only useful for some games, may cause glitches";
static const char h_spu_thread[]    = "Run sound emulation in main thread (recommended)";

static menu_entry e_menu_plugin_spu[] =
{
	mee_enum      ("Reverb",                    0, iUseReverb, men_spu_reverb),
	mee_enum      ("Interpolation",             0, iUseInterpolation, men_spu_interp),
	mee_onoff     ("Adjust XA pitch",           0, iXAPitch, 1),
	mee_onoff_h   ("SPU IRQ Wait",              0, iSPUIRQWait, 1, h_spu_irq_wait),
	mee_onoff_h   ("Sound in main thread",      0, iUseTimer, 2, h_spu_thread),
	mee_end,
};

static int menu_loop_plugin_spu(int id, int keys)
{
	static int sel = 0;
	me_loop(e_menu_plugin_spu, &sel, NULL);
	return 0;
}

static const char h_bios[]       = "HLE is simulated BIOS. BIOS is saved in savestates.\n"
				   "Must save config and reload the game\n"
				   "for change to take effect";
static const char h_plugin_xpu[] = "Must save config and reload the game\n"
				   "for plugin change to take effect";
static const char h_gpu[]        = "Configure built-in P.E.Op.S. SoftGL Driver V1.17";
static const char h_spu[]        = "Configure built-in P.E.Op.S. Sound Driver V1.7";

static menu_entry e_menu_plugin_options[] =
{
	mee_enum_h    ("BIOS",                          0, bios_sel, bioses, h_bios),
	mee_enum_h    ("GPU plugin",                    0, gpu_plugsel, gpu_plugins, h_plugin_xpu),
	mee_enum_h    ("SPU plugin",                    0, spu_plugsel, spu_plugins, h_plugin_xpu),
	mee_handler_h ("Configure built-in GPU plugin", menu_loop_plugin_gpu, h_gpu),
	mee_handler_h ("Configure built-in SPU plugin", menu_loop_plugin_spu, h_spu),
	mee_end,
};

static menu_entry e_menu_main[];

static int menu_loop_plugin_options(int id, int keys)
{
	static int sel = 0;
	me_loop(e_menu_plugin_options, &sel, NULL);

	// sync BIOS/plugins
	snprintf(Config.Bios, sizeof(Config.Bios), "%s", bioses[bios_sel]);
	snprintf(Config.Gpu, sizeof(Config.Gpu), "%s", gpu_plugins[gpu_plugsel]);
	snprintf(Config.Spu, sizeof(Config.Spu), "%s", spu_plugins[spu_plugsel]);
	me_enable(e_menu_main, MA_MAIN_RUN_BIOS, bios_sel != 0);

	return 0;
}

// ------------ adv options menu ------------

static const char h_cfg_cpul[]   = "Shows CPU usage in %%";
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"
				   "(proper .cue/.bin dump is needed otherwise)";
static const char h_cfg_sio[]    = "This should be enabled for certain memcards/gamepads";
static const char h_cfg_spuirq[] = "Compatibility tweak; should probably be left off";
static const char h_cfg_rcnt1[]  = "Parasite Eve 2, Vandal Hearts 1/2 Fix";
static const char h_cfg_rcnt2[]  = "InuYasha Sengoku Battle Fix";
static const char h_cfg_nodrc[]  = "Disable dynamic recompiler and use interpreter\n"
				   "Might be useful to overcome some dynarec bugs";

static menu_entry e_menu_adv_options[] =
{
	mee_onoff_h   ("Show CPU load",          0, g_opts, OPT_SHOWCPU, h_cfg_cpul),
	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),
	mee_onoff_h   ("SIO IRQ Always Enabled", 0, Config.Sio, 1, h_cfg_sio),
	mee_onoff_h   ("SPU IRQ Always Enabled", 0, Config.SpuIrq, 1, h_cfg_spuirq),
	mee_onoff_h   ("Rootcounter hack",       0, Config.RCntFix, 1, h_cfg_rcnt1),
	mee_onoff_h   ("Rootcounter hack 2",     0, Config.VSyncWA, 1, h_cfg_rcnt2),
	mee_onoff_h   ("Disable dynarec (slow!)",0, Config.Cpu, 1, h_cfg_nodrc),
	mee_end,
};

static int menu_loop_adv_options(int id, int keys)
{
	static int sel = 0;
	me_loop(e_menu_adv_options, &sel, NULL);
	return 0;
}

// ------------ options menu ------------

static int mh_restore_defaults(int id, int keys)
{
	menu_set_defconfig();
	me_update_msg("defaults restored");
	return 1;
}

static const char *men_region[]       = { "Auto", "NTSC", "PAL", NULL };
/*
static const char *men_confirm_save[] = { "OFF", "writes", "loads", "both", NULL };
static const char h_confirm_save[]    = "Ask for confirmation when overwriting save,\n"
					"loading state or both";
*/
static const char h_restore_def[]     = "Switches back to default / recommended\n"
					"configuration";

static menu_entry e_menu_options[] =
{
//	mee_range     ("Save slot",                0, state_slot, 0, 9),
//	mee_enum_h    ("Confirm savestate",        0, dummy, men_confirm_save, h_confirm_save),
	mee_onoff     ("Frameskip",                0, UseFrameSkip, 1),
	mee_onoff     ("Show FPS",                 0, g_opts, OPT_SHOWFPS),
	mee_enum      ("Region",                   0, region, men_region),
	mee_range     ("CPU clock",                MA_OPT_CPU_CLOCKS, cpu_clock, 20, 5000),
	mee_handler   ("[Display]",                menu_loop_gfx_options),
	mee_handler   ("[BIOS/Plugins]",           menu_loop_plugin_options),
	mee_handler   ("[Advanced]",               menu_loop_adv_options),
	mee_cust_nosave("Save global config",      MA_OPT_SAVECFG,      mh_savecfg, mgn_saveloadcfg),
	mee_cust_nosave("Save cfg for loaded game",MA_OPT_SAVECFG_GAME, mh_savecfg, mgn_saveloadcfg),
	mee_handler_h ("Restore default config",   mh_restore_defaults, h_restore_def),
	mee_end,
};

static int menu_loop_options(int id, int keys)
{
	static int sel = 0;
	int i;

	i = me_id2offset(e_menu_options, MA_OPT_CPU_CLOCKS);
	e_menu_options[i].enabled = cpu_clock != 0 ? 1 : 0;
	me_enable(e_menu_options, MA_OPT_SAVECFG_GAME, ready_to_go && CdromId[0]);

	me_loop(e_menu_options, &sel, NULL);

	return 0;
}

// ------------ debug menu ------------

static void draw_frame_debug(void)
{
	smalltext_out16(4, 1, "build: "__DATE__ " " __TIME__ " " REV, 0xe7fc);
}

static void debug_menu_loop(void)
{
	int inp;

	while (1)
	{
		menu_draw_begin(1);
		draw_frame_debug();
		menu_draw_end();

		inp = in_menu_wait(PBTN_MOK|PBTN_MBACK|PBTN_MA2|PBTN_MA3|PBTN_L|PBTN_R |
					PBTN_UP|PBTN_DOWN|PBTN_LEFT|PBTN_RIGHT, 70);
		if (inp & PBTN_MBACK)
			return;
	}
}

// ------------ main menu ------------

void OnFile_Exit();

static void draw_frame_main(void)
{
	if (CdromId[0] != 0) {
		char buff[64];
		snprintf(buff, sizeof(buff), "%.32s/%.9s (running as %s)",
			 get_cd_label(), CdromId, Config.PsxType ? "PAL" : "NTSC");
		smalltext_out16(4, 1, buff, 0x105f);
	}
}

static void draw_frame_credits(void)
{
	smalltext_out16(4, 1, "build: "__DATE__ " " __TIME__ " " REV, 0xe7fc);
}

const char *plat_get_credits(void)
{
	return	"PCSX-ReARMed\n\n"
		"(C) 1999-2003 PCSX Team\n"
		"(C) 2005-2009 PCSX-df Team\n"
		"(C) 2009-2010 PCSX-Reloaded Team\n\n"
		"GPU and SPU code by Pete Bernert\n"
		"  and the P.E.Op.S. team\n"
		"ARM recompiler (C) 2009-2010 Ari64\n"
		"PCSX4ALL plugins by PCSX4ALL team\n"
		"  Chui, Franxis, Unai\n\n"
		"integration, optimization and\n"
		"  frontend (C) 2010-2011 notaz\n";
}

static int reset_game(void)
{
	// sanity check
	if (bios_sel == 0 && !Config.HLE)
		return -1;

	ClosePlugins();
	OpenPlugins();
	SysReset();
	if (CheckCdrom() != -1) {
		LoadCdrom();
	}
	return 0;
}

static int run_bios(void)
{
	if (bios_sel == 0)
		return -1;

	ready_to_go = 0;
	pl_fbdev_buf = NULL;

	ClosePlugins();
	set_cd_image(NULL);
	LoadPlugins();
	NetOpened = 0;
	if (OpenPlugins() == -1) {
		me_update_msg("failed to open plugins");
		return -1;
	}
	plugin_call_rearmed_cbs();

	CdromId[0] = '\0';
	CdromLabel[0] = '\0';

	SysReset();

	ready_to_go = 1;
	return 0;
}

static int run_cd_image(const char *fname)
{
	ready_to_go = 0;
	pl_fbdev_buf = NULL;

	ClosePlugins();
	set_cd_image(fname);
	LoadPlugins();
	NetOpened = 0;
	if (OpenPlugins() == -1) {
		me_update_msg("failed to open plugins");
		return -1;
	}
	plugin_call_rearmed_cbs();

	if (CheckCdrom() == -1) {
		// Only check the CD if we are starting the console with a CD
		ClosePlugins();
		me_update_msg("unsupported/invalid CD image");
		return -1;
	}

	SysReset();

	// Read main executable directly from CDRom and start it
	if (LoadCdrom() == -1) {
		ClosePlugins();
		me_update_msg("failed to load CD image");
		return -1;
	}

	ready_to_go = 1;
	return 0;
}

static int romsel_run(void)
{
	int prev_gpu, prev_spu;
	char *fname;

	fname = menu_loop_romsel(last_selected_fname, sizeof(last_selected_fname));
	if (fname == NULL)
		return -1;

	printf("selected file: %s\n", fname);

	if (run_cd_image(fname) != 0)
		return -1;

	prev_gpu = gpu_plugsel;
	prev_spu = spu_plugsel;
	if (menu_load_config(1) != 0)
		menu_load_config(0);

	// check for plugin changes, have to repeat
	// loading if game config changed plugins to reload them
	if (prev_gpu != gpu_plugsel || prev_spu != spu_plugsel) {
		printf("plugin change detected, reloading plugins..\n");
		if (run_cd_image(fname) != 0)
			return -1;
	}

	strcpy(last_selected_fname, rom_fname_reload);
	return 0;
}

static int main_menu_handler(int id, int keys)
{
	switch (id)
	{
	case MA_MAIN_RESUME_GAME:
		if (ready_to_go)
			return 1;
		break;
	case MA_MAIN_SAVE_STATE:
		if (ready_to_go)
			return menu_loop_savestate(0);
		break;
	case MA_MAIN_LOAD_STATE:
		if (ready_to_go)
			return menu_loop_savestate(1);
		break;
	case MA_MAIN_RESET_GAME:
		if (ready_to_go && reset_game() == 0)
			return 1;
		break;
	case MA_MAIN_LOAD_ROM:
		if (romsel_run() == 0)
			return 1;
		break;
	case MA_MAIN_RUN_BIOS:
		if (run_bios() == 0)
			return 1;
		break;
	case MA_MAIN_CREDITS:
		draw_menu_credits(draw_frame_credits);
		in_menu_wait(PBTN_MOK|PBTN_MBACK, 70);
		break;
	case MA_MAIN_EXIT:
		OnFile_Exit();
		break;
	default:
		lprintf("%s: something unknown selected\n", __FUNCTION__);
		break;
	}

	return 0;
}

static menu_entry e_menu_main[] =
{
	mee_label     (""),
	mee_label     (""),
	mee_handler_id("Resume game",        MA_MAIN_RESUME_GAME, main_menu_handler),
	mee_handler_id("Save State",         MA_MAIN_SAVE_STATE,  main_menu_handler),
	mee_handler_id("Load State",         MA_MAIN_LOAD_STATE,  main_menu_handler),
	mee_handler_id("Reset game",         MA_MAIN_RESET_GAME,  main_menu_handler),
	mee_handler_id("Load CD image",      MA_MAIN_LOAD_ROM,    main_menu_handler),
	mee_handler_id("Run BIOS",           MA_MAIN_RUN_BIOS,    main_menu_handler),
	mee_handler   ("Options",            menu_loop_options),
	mee_handler   ("Controls",           menu_loop_keyconfig),
	mee_handler_id("Credits",            MA_MAIN_CREDITS,     main_menu_handler),
	mee_handler_id("Exit",               MA_MAIN_EXIT,        main_menu_handler),
	mee_end,
};

// ----------------------------

static void menu_leave_emu(void);

void menu_loop(void)
{
	static int sel = 0;

	menu_leave_emu();

	me_enable(e_menu_main, MA_MAIN_RESUME_GAME, ready_to_go);
	me_enable(e_menu_main, MA_MAIN_SAVE_STATE,  ready_to_go && CdromId[0]);
	me_enable(e_menu_main, MA_MAIN_LOAD_STATE,  ready_to_go && CdromId[0]);
	me_enable(e_menu_main, MA_MAIN_RESET_GAME,  ready_to_go);
	me_enable(e_menu_main, MA_MAIN_RUN_BIOS, bios_sel != 0);

	in_set_config_int(0, IN_CFG_BLOCKING, 1);

	do {
		me_loop(e_menu_main, &sel, draw_frame_main);
	} while (!ready_to_go);

	/* wait until menu, ok, back is released */
	while (in_menu_wait_any(50) & (PBTN_MENU|PBTN_MOK|PBTN_MBACK))
		;

	in_set_config_int(0, IN_CFG_BLOCKING, 0);

	menu_prepare_emu();
}

static void scan_bios_plugins(void)
{
	char fname[MAXPATHLEN];
	struct dirent *ent;
	int bios_i, gpu_i, spu_i;
	char *p;
	DIR *dir;

	bioses[0] = "HLE";
	gpu_plugins[0] = "builtin_gpu";
	spu_plugins[0] = "builtin_spu";
	bios_i = gpu_i = spu_i = 1;

	snprintf(fname, sizeof(fname), "%s/", Config.BiosDir);
	dir = opendir(fname);
	if (dir == NULL) {
		perror("scan_bios_plugins bios opendir");
		goto do_plugins;
	}

	while (1) {
		struct stat st;

		errno = 0;
		ent = readdir(dir);
		if (ent == NULL) {
			if (errno != 0)
				perror("readdir");
			break;
		}

		if (ent->d_type != DT_REG && ent->d_type != DT_LNK)
			continue;

		snprintf(fname, sizeof(fname), "%s/%s", Config.BiosDir, ent->d_name);
		if (stat(fname, &st) != 0 || st.st_size != 512*1024) {
			printf("bad BIOS file: %s\n", ent->d_name);
			continue;
		}

		if (bios_i < ARRAY_SIZE(bioses) - 1) {
			bioses[bios_i++] = strdup(ent->d_name);
			continue;
		}

		printf("too many BIOSes, dropping \"%s\"\n", ent->d_name);
	}

	closedir(dir);

do_plugins:
	snprintf(fname, sizeof(fname), "%s/", Config.PluginsDir);
	dir = opendir(fname);
	if (dir == NULL) {
		perror("scan_bios_plugins opendir");
		return;
	}

	while (1) {
		void *h, *tmp;

		errno = 0;
		ent = readdir(dir);
		if (ent == NULL) {
			if (errno != 0)
				perror("readdir");
			break;
		}
		p = strstr(ent->d_name, ".so");
		if (p == NULL)
			continue;

		snprintf(fname, sizeof(fname), "%s/%s", Config.PluginsDir, ent->d_name);
		h = dlopen(fname, RTLD_LAZY | RTLD_LOCAL);
		if (h == NULL) {
			fprintf(stderr, "%s\n", dlerror());
			continue;
		}

		// now what do we have here?
		tmp = dlsym(h, "GPUinit");
		if (tmp) {
			dlclose(h);
			if (gpu_i < ARRAY_SIZE(gpu_plugins) - 1)
				gpu_plugins[gpu_i++] = strdup(ent->d_name);
			continue;
		}

		tmp = dlsym(h, "SPUinit");
		if (tmp) {
			dlclose(h);
			if (spu_i < ARRAY_SIZE(spu_plugins) - 1)
				spu_plugins[spu_i++] = strdup(ent->d_name);
			continue;
		}

		fprintf(stderr, "ignoring unidentified plugin: %s\n", fname);
		dlclose(h);
	}

	closedir(dir);
}

void menu_init(void)
{
	char buff[MAXPATHLEN];

	strcpy(last_selected_fname, "/media");

	scan_bios_plugins();
	pnd_menu_init();
	menu_init_common();

	menu_set_defconfig();
	menu_load_config(0);
	last_psx_w = 320;
	last_psx_h = 240;
	last_psx_bpp = 16;

	g_menubg_src_ptr = calloc(g_menuscreen_w * g_menuscreen_h * 2, 1);
	if (g_menubg_src_ptr == NULL)
		exit(1);
	emu_make_path(buff, "skin/background.png", sizeof(buff));
	readpng(g_menubg_src_ptr, buff, READPNG_BG, g_menuscreen_w, g_menuscreen_h);
}

void menu_notify_mode_change(int w, int h, int bpp)
{
	last_psx_w = w;
	last_psx_h = h;
	last_psx_bpp = bpp;

	if (scaling == SCALE_1_1) {
		g_layer_x = 800/2 - w/2;  g_layer_y = 480/2 - h/2;
		g_layer_w = w; g_layer_h = h;
	}
}

static void menu_leave_emu(void)
{
	if (GPU_close != NULL) {
		int ret = GPU_close();
		if (ret)
			fprintf(stderr, "Warning: GPU_close returned %d\n", ret);
	}

	memcpy(g_menubg_ptr, g_menubg_src_ptr, g_menuscreen_w * g_menuscreen_h * 2);
	if (pl_fbdev_buf != NULL && ready_to_go && last_psx_bpp == 16) {
		int x = max(0, g_menuscreen_w - last_psx_w);
		int y = max(0, g_menuscreen_h / 2 - last_psx_h / 2);
		int w = min(g_menuscreen_w, last_psx_w);
		int h = min(g_menuscreen_h, last_psx_h);
		u16 *d = (u16 *)g_menubg_ptr + g_menuscreen_w * y + x;
		u16 *s = pl_fbdev_buf;

		for (; h > 0; h--, d += g_menuscreen_w, s += last_psx_w)
			menu_darken_bg(d, s, w, 0);
	}

	if (ready_to_go)
		cpu_clock = get_cpu_clock();

	plat_video_menu_enter(ready_to_go);
}

void menu_prepare_emu(void)
{
	R3000Acpu *prev_cpu = psxCpu;

	plat_video_menu_leave();

	switch (scaling) {
	case SCALE_1_1:
		menu_notify_mode_change(last_psx_w, last_psx_h, last_psx_bpp);
		break;
	case SCALE_4_3:
		g_layer_x = 80;  g_layer_y = 0;
		g_layer_w = 640; g_layer_h = 480;
		break;
	case SCALE_FULLSCREEN:
		g_layer_x = 0;   g_layer_y = 0;
		g_layer_w = 800; g_layer_h = 480;
		break;
	case SCALE_CUSTOM:
		break;
	}
	apply_filter(filter);
	apply_cpu_clock();
	stop = 0;

	psxCpu = (Config.Cpu == CPU_INTERPRETER) ? &psxInt : &psxRec;
	if (psxCpu != prev_cpu)
		// note that this does not really reset, just clears drc caches
		psxCpu->Reset();

	// core doesn't care about Config.Cdda changes,
	// so handle them manually here
	if (Config.Cdda)
		CDR_stop();

	menu_sync_config();

	if (GPU_open != NULL) {
		int ret = GPU_open(&gpuDisp, "PCSX", NULL);
		if (ret)
			fprintf(stderr, "Warning: GPU_open returned %d\n", ret);
	}
}

void me_update_msg(const char *msg)
{
	strncpy(menu_error_msg, msg, sizeof(menu_error_msg));
	menu_error_msg[sizeof(menu_error_msg) - 1] = 0;

	menu_error_time = plat_get_ticks_ms();
	lprintf("msg: %s\n", menu_error_msg);
}