[picodrive.git] / platform / common / plat_sdl.c

/*
 * PicoDrive
 * (C) notaz, 2013
 *
 * This work is licensed under the terms of MAME license.
 * See COPYING file in the top-level directory.
 */

#include <stdio.h>

#include "../libpicofe/input.h"
#include "../libpicofe/plat_sdl.h"
#include "../libpicofe/in_sdl.h"
#include "../libpicofe/gl.h"
#include "emu.h"
#include "menu_pico.h"
#include "input_pico.h"
#include "version.h"

#include <pico/pico.h>

static void *shadow_fb;

const struct in_default_bind in_sdl_defbinds[] __attribute__((weak)) = {
	{ SDLK_UP,     IN_BINDTYPE_PLAYER12, GBTN_UP },
	{ SDLK_DOWN,   IN_BINDTYPE_PLAYER12, GBTN_DOWN },
	{ SDLK_LEFT,   IN_BINDTYPE_PLAYER12, GBTN_LEFT },
	{ SDLK_RIGHT,  IN_BINDTYPE_PLAYER12, GBTN_RIGHT },
	{ SDLK_z,      IN_BINDTYPE_PLAYER12, GBTN_A },
	{ SDLK_x,      IN_BINDTYPE_PLAYER12, GBTN_B },
	{ SDLK_c,      IN_BINDTYPE_PLAYER12, GBTN_C },
	{ SDLK_a,      IN_BINDTYPE_PLAYER12, GBTN_X },
	{ SDLK_s,      IN_BINDTYPE_PLAYER12, GBTN_Y },
	{ SDLK_d,      IN_BINDTYPE_PLAYER12, GBTN_Z },
	{ SDLK_RETURN, IN_BINDTYPE_PLAYER12, GBTN_START },
	{ SDLK_f,      IN_BINDTYPE_PLAYER12, GBTN_MODE },
	{ SDLK_ESCAPE, IN_BINDTYPE_EMU, PEVB_MENU },
	{ SDLK_F1,     IN_BINDTYPE_EMU, PEVB_STATE_SAVE },
	{ SDLK_F2,     IN_BINDTYPE_EMU, PEVB_STATE_LOAD },
	{ SDLK_F3,     IN_BINDTYPE_EMU, PEVB_SSLOT_PREV },
	{ SDLK_F4,     IN_BINDTYPE_EMU, PEVB_SSLOT_NEXT },
	{ SDLK_F5,     IN_BINDTYPE_EMU, PEVB_SWITCH_RND },
	{ SDLK_F6,     IN_BINDTYPE_EMU, PEVB_PICO_PPREV },
	{ SDLK_F7,     IN_BINDTYPE_EMU, PEVB_PICO_PNEXT },
	{ SDLK_F8,     IN_BINDTYPE_EMU, PEVB_PICO_SWINP },
	{ SDLK_BACKSPACE, IN_BINDTYPE_EMU, PEVB_FF },
	{ 0, 0, 0 }
};

const struct menu_keymap in_sdl_key_map[] __attribute__((weak)) =
{
	{ SDLK_UP,	PBTN_UP },
	{ SDLK_DOWN,	PBTN_DOWN },
	{ SDLK_LEFT,	PBTN_LEFT },
	{ SDLK_RIGHT,	PBTN_RIGHT },
	{ SDLK_RETURN,	PBTN_MOK },
	{ SDLK_ESCAPE,	PBTN_MBACK },
	{ SDLK_SEMICOLON,	PBTN_MA2 },
	{ SDLK_QUOTE,	PBTN_MA3 },
	{ SDLK_LEFTBRACKET,  PBTN_L },
	{ SDLK_RIGHTBRACKET, PBTN_R },
};

const struct menu_keymap in_sdl_joy_map[] __attribute__((weak)) =
{
	{ SDLK_UP,	PBTN_UP },
	{ SDLK_DOWN,	PBTN_DOWN },
	{ SDLK_LEFT,	PBTN_LEFT },
	{ SDLK_RIGHT,	PBTN_RIGHT },
	/* joystick */
	{ SDLK_WORLD_0,	PBTN_MOK },
	{ SDLK_WORLD_1,	PBTN_MBACK },
	{ SDLK_WORLD_2,	PBTN_MA2 },
	{ SDLK_WORLD_3,	PBTN_MA3 },
};

extern const char * const in_sdl_key_names[] __attribute__((weak));

static const struct in_pdata in_sdl_platform_data = {
	.defbinds = in_sdl_defbinds,
	.key_map = in_sdl_key_map,
	.kmap_size = sizeof(in_sdl_key_map) / sizeof(in_sdl_key_map[0]),
	.joy_map = in_sdl_joy_map,
	.jmap_size = sizeof(in_sdl_joy_map) / sizeof(in_sdl_joy_map[0]),
	.key_names = in_sdl_key_names,
};

/* YUV stuff */
static int yuv_ry[32], yuv_gy[32], yuv_by[32];
static unsigned char yuv_u[32 * 2], yuv_v[32 * 2];

void bgr_to_uyvy_init(void)
{
  int i, v;

  /* init yuv converter:
    y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0));
    y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1));
    u = (int)(8 * 0.565f * (b0 - y0)) + 128;
    v = (int)(8 * 0.713f * (r0 - y0)) + 128;
  */
  for (i = 0; i < 32; i++) {
    yuv_ry[i] = (int)(0.299f * i * 65536.0f + 0.5f);
    yuv_gy[i] = (int)(0.587f * i * 65536.0f + 0.5f);
    yuv_by[i] = (int)(0.114f * i * 65536.0f + 0.5f);
  }
  for (i = -32; i < 32; i++) {
    v = (int)(8 * 0.565f * i) + 128;
    if (v < 0)
      v = 0;
    if (v > 255)
      v = 255;
    yuv_u[i + 32] = v;
    v = (int)(8 * 0.713f * i) + 128;
    if (v < 0)
      v = 0;
    if (v > 255)
      v = 255;
    yuv_v[i + 32] = v;
  }
}

void rgb565_to_uyvy(void *d, const void *s, int pixels)
{
  unsigned int *dst = d;
  const unsigned short *src = s;
  const unsigned char *yu = yuv_u + 32;
  const unsigned char *yv = yuv_v + 32;
  int r0, g0, b0, r1, g1, b1;
  int y0, y1, u, v;

  for (; pixels > 0; src += 2, dst++, pixels -= 2)
  {
    r0 = (src[0] >> 11) & 0x1f;
    g0 = (src[0] >> 6) & 0x1f;
    b0 =  src[0] & 0x1f;
    r1 = (src[1] >> 11) & 0x1f;
    g1 = (src[1] >> 6) & 0x1f;
    b1 =  src[1] & 0x1f;
    y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16;
    y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16;
    u = yu[b0 - y0];
    v = yv[r0 - y0];
    // valid Y range seems to be 16..235
    y0 = 16 + 219 * y0 / 31;
    y1 = 16 + 219 * y1 / 31;

    *dst = (y1 << 24) | (v << 16) | (y0 << 8) | u;
  }
}

void plat_video_flip(void)
{
	if (plat_sdl_overlay != NULL) {
		SDL_Rect dstrect =
			{ 0, 0, plat_sdl_screen->w, plat_sdl_screen->h };

		SDL_LockYUVOverlay(plat_sdl_overlay);
		rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb,
				g_screen_width * g_screen_height);
		SDL_UnlockYUVOverlay(plat_sdl_overlay);
		SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect);
	}
	else if (plat_sdl_gl_active) {
		gl_flip(shadow_fb, g_screen_width, g_screen_height);
	}
	else {
		if (SDL_MUSTLOCK(plat_sdl_screen))
			SDL_UnlockSurface(plat_sdl_screen);
		SDL_Flip(plat_sdl_screen);
		g_screen_ptr = plat_sdl_screen->pixels;
		PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
	}
}

void plat_video_wait_vsync(void)
{
}

void plat_video_menu_enter(int is_rom_loaded)
{
	plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h, 0);
	g_screen_ptr = shadow_fb;
}

void plat_video_menu_begin(void)
{
	if (plat_sdl_overlay != NULL || plat_sdl_gl_active) {
		g_menuscreen_ptr = shadow_fb;
	}
	else {
		if (SDL_MUSTLOCK(plat_sdl_screen))
			SDL_LockSurface(plat_sdl_screen);
		g_menuscreen_ptr = plat_sdl_screen->pixels;
	}
}

void plat_video_menu_end(void)
{
	if (plat_sdl_overlay != NULL) {
		SDL_Rect dstrect =
			{ 0, 0, plat_sdl_screen->w, plat_sdl_screen->h };

		SDL_LockYUVOverlay(plat_sdl_overlay);
		rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb,
				g_menuscreen_w * g_menuscreen_h);
		SDL_UnlockYUVOverlay(plat_sdl_overlay);

		SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect);
	}
	else if (plat_sdl_gl_active) {
		gl_flip(g_menuscreen_ptr, g_menuscreen_w, g_menuscreen_h);
	}
	else {
		if (SDL_MUSTLOCK(plat_sdl_screen))
			SDL_UnlockSurface(plat_sdl_screen);
		SDL_Flip(plat_sdl_screen);
	}
	g_menuscreen_ptr = NULL;

}

void plat_video_menu_leave(void)
{
}

void plat_video_loop_prepare(void)
{
	plat_sdl_change_video_mode(g_screen_width, g_screen_height, 0);

	if (plat_sdl_overlay != NULL || plat_sdl_gl_active) {
		g_screen_ptr = shadow_fb;
	}
	else {
		if (SDL_MUSTLOCK(plat_sdl_screen))
			SDL_LockSurface(plat_sdl_screen);
		g_screen_ptr = plat_sdl_screen->pixels;
	}
	PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
}

void plat_early_init(void)
{
}

static void plat_sdl_quit(void)
{
	// for now..
	exit(1);
}

void plat_init(void)
{
	int shadow_size;
	int ret;

	ret = plat_sdl_init();
	if (ret != 0)
		exit(1);

	plat_sdl_quit_cb = plat_sdl_quit;

	SDL_WM_SetCaption("PicoDrive " VERSION, NULL);

	g_menuscreen_w = plat_sdl_screen->w;
	g_menuscreen_h = plat_sdl_screen->h;
	g_menuscreen_ptr = NULL;

	shadow_size = g_menuscreen_w * g_menuscreen_h * 2;
	if (shadow_size < 320 * 480 * 2)
		shadow_size = 320 * 480 * 2;

	shadow_fb = malloc(shadow_size);
	g_menubg_ptr = malloc(shadow_size);
	if (shadow_fb == NULL || g_menubg_ptr == NULL) {
		fprintf(stderr, "OOM\n");
		exit(1);
	}

	g_screen_width = 320;
	g_screen_height = 240;
	g_screen_ptr = shadow_fb;

	in_sdl_init(&in_sdl_platform_data, plat_sdl_event_handler);
	in_probe();

	bgr_to_uyvy_init();
}

void plat_finish(void)
{
	free(shadow_fb);
	shadow_fb = NULL;
	free(g_menubg_ptr);
	g_menubg_ptr = NULL;
	plat_sdl_finish();
}
Commit	Line	Data
636d5f25	1	/*
	2	* PicoDrive
	3	* (C) notaz, 2013
	4	*
	5	* This work is licensed under the terms of MAME license.
	6	* See COPYING file in the top-level directory.
	7	*/
	8
	9	#include <stdio.h>
	10
	11	#include "../libpicofe/input.h"
	12	#include "../libpicofe/plat_sdl.h"
	13	#include "../libpicofe/in_sdl.h"
	14	#include "../libpicofe/gl.h"
	15	#include "emu.h"
	16	#include "menu_pico.h"
	17	#include "input_pico.h"
	18	#include "version.h"
	19
74e770b1	20	#include <pico/pico.h>
74e770b1	21
636d5f25	22	static void *shadow_fb;
636d5f25	23
4e3551a5	24	const struct in_default_bind in_sdl_defbinds[] __attribute__((weak)) = {
636d5f25	25	{ SDLK_UP, IN_BINDTYPE_PLAYER12, GBTN_UP },
	26	{ SDLK_DOWN, IN_BINDTYPE_PLAYER12, GBTN_DOWN },
	27	{ SDLK_LEFT, IN_BINDTYPE_PLAYER12, GBTN_LEFT },
	28	{ SDLK_RIGHT, IN_BINDTYPE_PLAYER12, GBTN_RIGHT },
	29	{ SDLK_z, IN_BINDTYPE_PLAYER12, GBTN_A },
	30	{ SDLK_x, IN_BINDTYPE_PLAYER12, GBTN_B },
	31	{ SDLK_c, IN_BINDTYPE_PLAYER12, GBTN_C },
	32	{ SDLK_a, IN_BINDTYPE_PLAYER12, GBTN_X },
	33	{ SDLK_s, IN_BINDTYPE_PLAYER12, GBTN_Y },
	34	{ SDLK_d, IN_BINDTYPE_PLAYER12, GBTN_Z },
	35	{ SDLK_RETURN, IN_BINDTYPE_PLAYER12, GBTN_START },
	36	{ SDLK_f, IN_BINDTYPE_PLAYER12, GBTN_MODE },
	37	{ SDLK_ESCAPE, IN_BINDTYPE_EMU, PEVB_MENU },
	38	{ SDLK_F1, IN_BINDTYPE_EMU, PEVB_STATE_SAVE },
	39	{ SDLK_F2, IN_BINDTYPE_EMU, PEVB_STATE_LOAD },
	40	{ SDLK_F3, IN_BINDTYPE_EMU, PEVB_SSLOT_PREV },
	41	{ SDLK_F4, IN_BINDTYPE_EMU, PEVB_SSLOT_NEXT },
	42	{ SDLK_F5, IN_BINDTYPE_EMU, PEVB_SWITCH_RND },
	43	{ SDLK_F6, IN_BINDTYPE_EMU, PEVB_PICO_PPREV },
	44	{ SDLK_F7, IN_BINDTYPE_EMU, PEVB_PICO_PNEXT },
	45	{ SDLK_F8, IN_BINDTYPE_EMU, PEVB_PICO_SWINP },
	46	{ SDLK_BACKSPACE, IN_BINDTYPE_EMU, PEVB_FF },
	47	{ 0, 0, 0 }
	48	};
	49
4e3551a5 PC	50	const struct menu_keymap in_sdl_key_map[] __attribute__((weak)) =
	51	{
	52	{ SDLK_UP, PBTN_UP },
	53	{ SDLK_DOWN, PBTN_DOWN },
	54	{ SDLK_LEFT, PBTN_LEFT },
	55	{ SDLK_RIGHT, PBTN_RIGHT },
	56	{ SDLK_RETURN, PBTN_MOK },
	57	{ SDLK_ESCAPE, PBTN_MBACK },
	58	{ SDLK_SEMICOLON, PBTN_MA2 },
	59	{ SDLK_QUOTE, PBTN_MA3 },
	60	{ SDLK_LEFTBRACKET, PBTN_L },
	61	{ SDLK_RIGHTBRACKET, PBTN_R },
	62	};
	63
	64	const struct menu_keymap in_sdl_joy_map[] __attribute__((weak)) =
	65	{
	66	{ SDLK_UP, PBTN_UP },
	67	{ SDLK_DOWN, PBTN_DOWN },
	68	{ SDLK_LEFT, PBTN_LEFT },
	69	{ SDLK_RIGHT, PBTN_RIGHT },
	70	/* joystick */
	71	{ SDLK_WORLD_0, PBTN_MOK },
	72	{ SDLK_WORLD_1, PBTN_MBACK },
	73	{ SDLK_WORLD_2, PBTN_MA2 },
	74	{ SDLK_WORLD_3, PBTN_MA3 },
	75	};
	76
d4bea61c PC	77	extern const char * const in_sdl_key_names[] __attribute__((weak));
d4bea61c PC	78
4e3551a5 PC	79	static const struct in_pdata in_sdl_platform_data = {
	80	.defbinds = in_sdl_defbinds,
	81	.key_map = in_sdl_key_map,
	82	.kmap_size = sizeof(in_sdl_key_map) / sizeof(in_sdl_key_map[0]),
	83	.joy_map = in_sdl_joy_map,
	84	.jmap_size = sizeof(in_sdl_joy_map) / sizeof(in_sdl_joy_map[0]),
d4bea61c	85	.key_names = in_sdl_key_names,
4e3551a5 PC	86	};
4e3551a5 PC	87
636d5f25	88	/* YUV stuff */
	89	static int yuv_ry[32], yuv_gy[32], yuv_by[32];
	90	static unsigned char yuv_u[32 * 2], yuv_v[32 * 2];
	91
	92	void bgr_to_uyvy_init(void)
	93	{
	94	int i, v;
	95
	96	/* init yuv converter:
	97	y0 = (int)((0.299f * r0) + (0.587f * g0) + (0.114f * b0));
	98	y1 = (int)((0.299f * r1) + (0.587f * g1) + (0.114f * b1));
	99	u = (int)(8 * 0.565f * (b0 - y0)) + 128;
	100	v = (int)(8 * 0.713f * (r0 - y0)) + 128;
	101	*/
	102	for (i = 0; i < 32; i++) {
	103	yuv_ry[i] = (int)(0.299f * i * 65536.0f + 0.5f);
	104	yuv_gy[i] = (int)(0.587f * i * 65536.0f + 0.5f);
	105	yuv_by[i] = (int)(0.114f * i * 65536.0f + 0.5f);
	106	}
	107	for (i = -32; i < 32; i++) {
	108	v = (int)(8 * 0.565f * i) + 128;
	109	if (v < 0)
	110	v = 0;
	111	if (v > 255)
	112	v = 255;
	113	yuv_u[i + 32] = v;
	114	v = (int)(8 * 0.713f * i) + 128;
	115	if (v < 0)
	116	v = 0;
	117	if (v > 255)
	118	v = 255;
	119	yuv_v[i + 32] = v;
	120	}
	121	}
	122
	123	void rgb565_to_uyvy(void d, const void s, int pixels)
	124	{
	125	unsigned int *dst = d;
	126	const unsigned short *src = s;
	127	const unsigned char *yu = yuv_u + 32;
	128	const unsigned char *yv = yuv_v + 32;
	129	int r0, g0, b0, r1, g1, b1;
	130	int y0, y1, u, v;
	131
	132	for (; pixels > 0; src += 2, dst++, pixels -= 2)
	133	{
	134	r0 = (src[0] >> 11) & 0x1f;
	135	g0 = (src[0] >> 6) & 0x1f;
	136	b0 = src[0] & 0x1f;
	137	r1 = (src[1] >> 11) & 0x1f;
	138	g1 = (src[1] >> 6) & 0x1f;
	139	b1 = src[1] & 0x1f;
	140	y0 = (yuv_ry[r0] + yuv_gy[g0] + yuv_by[b0]) >> 16;
	141	y1 = (yuv_ry[r1] + yuv_gy[g1] + yuv_by[b1]) >> 16;
	142	u = yu[b0 - y0];
	143	v = yv[r0 - y0];
	144	// valid Y range seems to be 16..235
	145	y0 = 16 + 219 * y0 / 31;
	146	y1 = 16 + 219 * y1 / 31;
	147
	148	*dst = (y1 << 24) \| (v << 16) \| (y0 << 8) \| u;
	149	}
	150	}
	151
152	void plat_video_flip(void)
153	{
154	if (plat_sdl_overlay != NULL) {
155	SDL_Rect dstrect =
156	{ 0, 0, plat_sdl_screen->w, plat_sdl_screen->h };
157
158	SDL_LockYUVOverlay(plat_sdl_overlay);
159	rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb,
160	g_screen_width * g_screen_height);
161	SDL_UnlockYUVOverlay(plat_sdl_overlay);
162	SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect);
163	}
164	else if (plat_sdl_gl_active) {
165	gl_flip(shadow_fb, g_screen_width, g_screen_height);
166	}
167	else {
eb7ce29e PC	168	if (SDL_MUSTLOCK(plat_sdl_screen))
eb7ce29e PC	169	SDL_UnlockSurface(plat_sdl_screen);
636d5f25	170	SDL_Flip(plat_sdl_screen);
636d5f25	171	g_screen_ptr = plat_sdl_screen->pixels;
eb7ce29e	172	PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
636d5f25	173	}
	174	}
	175
	176	void plat_video_wait_vsync(void)
	177	{
	178	}
	179
	180	void plat_video_menu_enter(int is_rom_loaded)
	181	{
	182	plat_sdl_change_video_mode(g_menuscreen_w, g_menuscreen_h, 0);
d438a8dd	183	g_screen_ptr = shadow_fb;
636d5f25	184	}
	185
	186	void plat_video_menu_begin(void)
	187	{
	188	if (plat_sdl_overlay != NULL \|\| plat_sdl_gl_active) {
	189	g_menuscreen_ptr = shadow_fb;
	190	}
	191	else {
eb7ce29e PC	192	if (SDL_MUSTLOCK(plat_sdl_screen))
eb7ce29e PC	193	SDL_LockSurface(plat_sdl_screen);
636d5f25	194	g_menuscreen_ptr = plat_sdl_screen->pixels;
	195	}
	196	}
	197
	198	void plat_video_menu_end(void)
	199	{
	200	if (plat_sdl_overlay != NULL) {
	201	SDL_Rect dstrect =
	202	{ 0, 0, plat_sdl_screen->w, plat_sdl_screen->h };
	203
	204	SDL_LockYUVOverlay(plat_sdl_overlay);
	205	rgb565_to_uyvy(plat_sdl_overlay->pixels[0], shadow_fb,
	206	g_menuscreen_w * g_menuscreen_h);
	207	SDL_UnlockYUVOverlay(plat_sdl_overlay);
	208
	209	SDL_DisplayYUVOverlay(plat_sdl_overlay, &dstrect);
	210	}
	211	else if (plat_sdl_gl_active) {
	212	gl_flip(g_menuscreen_ptr, g_menuscreen_w, g_menuscreen_h);
	213	}
	214	else {
eb7ce29e PC	215	if (SDL_MUSTLOCK(plat_sdl_screen))
eb7ce29e PC	216	SDL_UnlockSurface(plat_sdl_screen);
636d5f25	217	SDL_Flip(plat_sdl_screen);
	218	}
	219	g_menuscreen_ptr = NULL;
	220
	221	}
	222
	223	void plat_video_menu_leave(void)
	224	{
	225	}
	226
	227	void plat_video_loop_prepare(void)
	228	{
	229	plat_sdl_change_video_mode(g_screen_width, g_screen_height, 0);
	230
	231	if (plat_sdl_overlay != NULL \|\| plat_sdl_gl_active) {
	232	g_screen_ptr = shadow_fb;
	233	}
	234	else {
eb7ce29e PC	235	if (SDL_MUSTLOCK(plat_sdl_screen))
eb7ce29e PC	236	SDL_LockSurface(plat_sdl_screen);
636d5f25	237	g_screen_ptr = plat_sdl_screen->pixels;
636d5f25	238	}
eb7ce29e	239	PicoDrawSetOutBuf(g_screen_ptr, g_screen_width * 2);
636d5f25	240	}
	241
	242	void plat_early_init(void)
	243	{
	244	}
	245
bec84f92	246	static void plat_sdl_quit(void)
	247	{
	248	// for now..
	249	exit(1);
	250	}
	251
636d5f25	252	void plat_init(void)
	253	{
	254	int shadow_size;
	255	int ret;
	256
	257	ret = plat_sdl_init();
	258	if (ret != 0)
	259	exit(1);
	260
bec84f92	261	plat_sdl_quit_cb = plat_sdl_quit;
bec84f92	262
fc11dd05	263	SDL_WM_SetCaption("PicoDrive " VERSION, NULL);
636d5f25	264
	265	g_menuscreen_w = plat_sdl_screen->w;
	266	g_menuscreen_h = plat_sdl_screen->h;
	267	g_menuscreen_ptr = NULL;
	268
	269	shadow_size = g_menuscreen_w * g_menuscreen_h * 2;
	270	if (shadow_size < 320 * 480 * 2)
	271	shadow_size = 320 * 480 * 2;
	272
	273	shadow_fb = malloc(shadow_size);
	274	g_menubg_ptr = malloc(shadow_size);
	275	if (shadow_fb == NULL \|\| g_menubg_ptr == NULL) {
	276	fprintf(stderr, "OOM\n");
	277	exit(1);
	278	}
	279
	280	g_screen_width = 320;
	281	g_screen_height = 240;
	282	g_screen_ptr = shadow_fb;
	283
4e3551a5	284	in_sdl_init(&in_sdl_platform_data, plat_sdl_event_handler);
636d5f25	285	in_probe();
	286
	287	bgr_to_uyvy_init();
	288	}
	289
	290	void plat_finish(void)
	291	{
	292	free(shadow_fb);
	293	shadow_fb = NULL;
	294	free(g_menubg_ptr);
	295	g_menubg_ptr = NULL;
	296	plat_sdl_finish();
	297	}