[libpicofe.git] / linux / gp2x.c

/* faking/emulating gp2x by using xlib */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <pthread.h>
#include <semaphore.h>

#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>

#include "../gp2x/version.h"
#include "../common/emu.h"
#include "../common/menu.h"
#include "../common/readpng.h"
#include "sndout_oss.h"

#include "log_io.h"

unsigned long current_keys = 0;
static int current_bpp = 8;
static int current_pal[256];
static const char *verstring = "PicoDrive " VERSION;
static int scr_changed = 0, scr_w = SCREEN_WIDTH, scr_h = SCREEN_HEIGHT;
void *gp2x_screens[4];

// dummies
int mix_32_to_16l_level;
int crashed_940 = 0;
int default_cpu_clock = 123;
void *gp2x_memregs = NULL;

/* ifndef is for qemu build without video out */
#ifndef ARM

/* faking GP2X pad */
enum  { GP2X_UP=0x1,       GP2X_LEFT=0x4,       GP2X_DOWN=0x10,  GP2X_RIGHT=0x40,
        GP2X_START=1<<8,   GP2X_SELECT=1<<9,    GP2X_L=1<<10,    GP2X_R=1<<11,
        GP2X_A=1<<12,      GP2X_B=1<<13,        GP2X_X=1<<14,    GP2X_Y=1<<15,
        GP2X_VOL_UP=1<<23, GP2X_VOL_DOWN=1<<22, GP2X_PUSH=1<<27 };

static void key_press_event(int keycode)
{
	switch (keycode)
	{
		case 111:
		case 0x62: current_keys |= GP2X_UP;    break;
		case 116:
		case 0x68: current_keys |= GP2X_DOWN;  break;
		case 113:
		case 0x64: current_keys |= GP2X_LEFT;  break;
		case 114:
		case 0x66: current_keys |= GP2X_RIGHT; break;
		case 0x24: current_keys |= GP2X_START; break; // enter
		case 0x23: current_keys |= GP2X_SELECT;break; // ]
		case 0x34: current_keys |= GP2X_A;     break; // z
		case 0x35: current_keys |= GP2X_X;     break; // x
		case 0x36: current_keys |= GP2X_B;     break; // c
		case 0x37: current_keys |= GP2X_Y;     break; // v
		case 0x27: current_keys |= GP2X_L;     break; // s
		case 0x28: current_keys |= GP2X_R;     break; // d
		case 0x29: current_keys |= GP2X_PUSH;  break; // f
		case 0x18: current_keys |= GP2X_VOL_DOWN;break; // q
		case 0x19: current_keys |= GP2X_VOL_UP;break; // w
		case 0x2d: log_io_clear(); break; // k
		case 0x2e: log_io_dump();  break; // l
		case 0x17: { // tab
			extern int PicoReset(void);
			PicoReset();
			break;
		}
	}
}

static void key_release_event(int keycode)
{
	switch (keycode)
	{
		case 111:
		case 0x62: current_keys &= ~GP2X_UP;    break;
		case 116:
		case 0x68: current_keys &= ~GP2X_DOWN;  break;
		case 113:
		case 0x64: current_keys &= ~GP2X_LEFT;  break;
		case 114:
		case 0x66: current_keys &= ~GP2X_RIGHT; break;
		case 0x24: current_keys &= ~GP2X_START; break; // enter
		case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
		case 0x34: current_keys &= ~GP2X_A;     break; // z
		case 0x35: current_keys &= ~GP2X_X;     break; // x
		case 0x36: current_keys &= ~GP2X_B;     break; // c
		case 0x37: current_keys &= ~GP2X_Y;     break; // v
		case 0x27: current_keys &= ~GP2X_L;     break; // s
		case 0x28: current_keys &= ~GP2X_R;     break; // d
		case 0x29: current_keys &= ~GP2X_PUSH;  break; // f
		case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
		case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
	}
}

/* --- */

#include <X11/Xlib.h>
#include <X11/Xutil.h>

static Display *xlib_display;
static Window xlib_window;
static XImage *ximage;

static void ximage_realloc(Display *display, Visual *visual)
{
	void *xlib_screen;

	XLockDisplay(xlib_display);

	if (ximage != NULL)
		XDestroyImage(ximage);
	ximage = NULL;

	xlib_screen = calloc(scr_w * scr_h, 4);
	if (xlib_screen != NULL)
		ximage = XCreateImage(display, visual, 24, ZPixmap, 0,
				xlib_screen, scr_w, scr_h, 32, 0);
	if (ximage == NULL)
		fprintf(stderr, "failed to alloc ximage\n");

	XUnlockDisplay(xlib_display);
}

static void xlib_update(void)
{
	Status xstatus;

	XLockDisplay(xlib_display);

	xstatus = XPutImage(xlib_display, xlib_window, DefaultGC(xlib_display, 0), ximage,
		0, 0, 0, 0, g_screen_width, g_screen_height);
	if (xstatus != 0)
		fprintf(stderr, "XPutImage %d\n", xstatus);

	XUnlockDisplay(xlib_display);
}

static void *xlib_threadf(void *targ)
{
	unsigned int width, height, display_width, display_height;
	sem_t *sem = targ;
	XTextProperty windowName;
	Window win;
	XEvent report;
	Display *display;
	Visual *visual;
	int screen;

	XInitThreads();

	xlib_display = display = XOpenDisplay(NULL);
	if (display == NULL)
	{
		fprintf(stderr, "cannot connect to X server %s\n",
				XDisplayName(NULL));
		sem_post(sem);
		return NULL;
	}

	visual = DefaultVisual(display, 0);
	if (visual->class != TrueColor)
	{
		fprintf(stderr, "cannot handle non true color visual\n");
		XCloseDisplay(display);
		sem_post(sem);
		return NULL;
	}

	printf("X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
		VendorRelease(display), DisplayString(display), ProtocolVersion(display),
		ProtocolRevision(display));

	screen = DefaultScreen(display);

	ximage_realloc(display, visual);
	sem_post(sem);

	display_width = DisplayWidth(display, screen);
	display_height = DisplayHeight(display, screen);

	xlib_window = win = XCreateSimpleWindow(display,
			RootWindow(display, screen),
			display_width / 2 - scr_w / 2,
			display_height / 2 - scr_h / 2,
			scr_w + 2, scr_h + 2, 1,
			BlackPixel(display, screen),
			BlackPixel(display, screen));

	XStringListToTextProperty((char **)&verstring, 1, &windowName);
	XSetWMName(display, win, &windowName);

	XSelectInput(display, win, ExposureMask |
			KeyPressMask | KeyReleaseMask |
			StructureNotifyMask);

	XMapWindow(display, win);

	while (1)
	{
		XNextEvent(display, &report);
		switch (report.type)
		{
			case Expose:
				while (XCheckTypedEvent(display, Expose, &report))
					;
				xlib_update();
				break;

			case ConfigureNotify:
				width = report.xconfigure.width;
				height = report.xconfigure.height;
				if (scr_w != width - 2 || scr_h != height - 2) {
					scr_w = width - 2;
					scr_h = height - 2;
					scr_changed = 1;
				}
				break;

			case ButtonPress:
				break;

			case KeyPress:
				key_press_event(report.xkey.keycode);
				break;

			case KeyRelease:
				key_release_event(report.xkey.keycode);
				break;

			default:
				break;
		}
	}
}

static void xlib_init(void)
{
	pthread_t x_thread;
	sem_t xlib_sem;

	sem_init(&xlib_sem, 0, 0);

	pthread_create(&x_thread, NULL, xlib_threadf, &xlib_sem);
	pthread_detach(x_thread);

	sem_wait(&xlib_sem);
	sem_destroy(&xlib_sem);
}
#endif // !ARM

/* --- */

static void realloc_screen(void)
{
	void *old = g_screen_ptr;
	int i;
	g_screen_width = scr_w;
	g_screen_height = scr_h;
	g_screen_ptr = calloc(g_screen_width * g_screen_height * 2, 1);
	free(old);
	scr_changed = 0;

	for (i = 0; i < 4; i++)
		gp2x_screens[i] = g_screen_ptr;
}

/* gp2x/emu.c stuff, most to be rm'd */
static void gp2x_video_flip_(void)
{
#ifndef ARM
	unsigned int *image;
	int pixel_count, i;

	if (ximage == NULL)
		return;

	pixel_count = g_screen_width * g_screen_height;
	image = (void *)ximage->data;

	if (current_bpp == 8)
	{
		unsigned char *pixels = g_screen_ptr;
		int pix;

		for (i = 0; i < pixel_count; i++)
		{
			pix = current_pal[pixels[i]];
			image[i] = pix;
		}
	}
	else
	{
		unsigned short *pixels = g_screen_ptr;

		for (i = 0; i < pixel_count; i++)
		{
			/*  in:           rrrr rggg gggb bbbb */
			/* out: rrrr r000 gggg gg00 bbbb b000 */
			image[i]  = (pixels[i] << 8) & 0xf80000;
			image[i] |= (pixels[i] << 5) & 0x00fc00;
			image[i] |= (pixels[i] << 3) & 0x0000f8;
		}
	}
	xlib_update();

	if (scr_changed) {
		realloc_screen();
		ximage_realloc(xlib_display, DefaultVisual(xlib_display, 0));
	}
#endif
}

static void gp2x_video_changemode_ll_(int bpp)
{
	current_bpp = bpp;
}

static void gp2x_video_setpalette_(int *pal, int len)
{
	memcpy(current_pal, pal, len*4);
}

void gp2x_memcpy_all_buffers(void *data, int offset, int len)
{
}

void gp2x_memset_all_buffers(int offset, int byte, int len)
{
	memset((char *)g_screen_ptr + offset, byte, len);
}

void gp2x_video_changemode(int bpp)
{
	gp2x_video_changemode_ll_(bpp);
}

void gp2x_make_fb_bufferable(int yes)
{
}

int soc_detect(void)
{
	return 0;
}

/* plat */
static char menu_bg_buffer[320*240*2];
char cpu_clk_name[16] = "GP2X CPU clocks";

void plat_video_menu_enter(int is_rom_loaded)
{
	if (is_rom_loaded)
	{
		// darken the active framebuffer
		memset(g_screen_ptr, 0, 320*8*2);
		menu_darken_bg((char *)g_screen_ptr + 320*8*2, 320*224, 1);
		memset((char *)g_screen_ptr + 320*232*2, 0, 320*8*2);
	}
	else
	{
		char buff[256];

		// should really only happen once, on startup..
		emu_make_path(buff, "skin/background.png", sizeof(buff));
		if (readpng(g_screen_ptr, buff, READPNG_BG) < 0)
			memset(g_screen_ptr, 0, 320*240*2);
	}

	memcpy(menu_bg_buffer, g_screen_ptr, 320*240*2);

	// switch to 16bpp
	gp2x_video_changemode_ll_(16);
	gp2x_video_flip_();
}

void plat_video_menu_begin(void)
{
	memcpy(g_screen_ptr, menu_bg_buffer, 320*240*2);
}

void plat_video_menu_end(void)
{
	gp2x_video_flip_();
}

void plat_validate_config(void)
{
	extern int PicoOpt;
//	PicoOpt &= ~POPT_EXT_FM;
	PicoOpt &= ~(1<<17); // POPT_EN_SVP_DRC
}

void plat_early_init(void)
{
}

void plat_init(void)
{
	realloc_screen();
	memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);

	// snd
	sndout_oss_init();

#ifndef ARM
	xlib_init();
#endif
}

void plat_finish(void)
{
	free(g_screen_ptr);
	sndout_oss_exit();
}

/* nasty */
static void do_nothing()
{
}

void *gp2x_video_flip = gp2x_video_flip_;
void *gp2x_video_flip2 = gp2x_video_flip_;
void *gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
void *gp2x_video_setpalette = gp2x_video_setpalette_;

void *gp2x_video_RGB_setscaling = do_nothing;
void *gp2x_video_wait_vsync = do_nothing;
void *gp2x_set_cpuclk = do_nothing;
void *gp2x_read_battery = do_nothing;
void *set_lcd_custom_rate = do_nothing;
void *unset_lcd_custom_rate = do_nothing;
void *set_lcd_gamma = do_nothing;
void *set_ram_timings = do_nothing;
void *unset_ram_timings = do_nothing;

/* joy */
int gp2x_touchpad_read(int *x, int *y)
{
	return -1;
}

/* misc */
void spend_cycles(int c)
{
	usleep(c/200);
}

int mp3_get_bitrate(FILE *f, int size)
{
	return 128;
}

void mp3_start_play(FILE *f, int pos)
{
}

void mp3_update(int *buffer, int length, int stereo)
{
}

void cache_flush_d_inval_i()
{
}

/* lprintf */
void lprintf(const char *fmt, ...)
{
	va_list vl;

	va_start(vl, fmt);
	vprintf(fmt, vl);
	va_end(vl);
}
Commit	Line	Data
	1	/* faking/emulating gp2x by using xlib */
	2	#include <stdio.h>
	3	#include <stdlib.h>
	4	#include <string.h>
	5	#include <stdarg.h>
	6	#include <pthread.h>
	7	#include <semaphore.h>
	8
	9	#include <unistd.h>
	10	#include <sys/types.h>
	11	#include <sys/stat.h>
	12	#include <fcntl.h>
	13	#include <errno.h>
	14
	15	#include "../gp2x/version.h"
	16	#include "../common/emu.h"
	17	#include "../common/menu.h"
	18	#include "../common/readpng.h"
	19	#include "sndout_oss.h"
	20
	21	#include "log_io.h"
	22
	23	unsigned long current_keys = 0;
	24	static int current_bpp = 8;
	25	static int current_pal[256];
	26	static const char *verstring = "PicoDrive " VERSION;
	27	static int scr_changed = 0, scr_w = SCREEN_WIDTH, scr_h = SCREEN_HEIGHT;
	28	void *gp2x_screens[4];
	29
	30	// dummies
	31	int mix_32_to_16l_level;
	32	int crashed_940 = 0;
	33	int default_cpu_clock = 123;
	34	void *gp2x_memregs = NULL;
	35
	36	/* ifndef is for qemu build without video out */
	37	#ifndef ARM
	38
	39	/* faking GP2X pad */
	40	enum { GP2X_UP=0x1, GP2X_LEFT=0x4, GP2X_DOWN=0x10, GP2X_RIGHT=0x40,
	41	GP2X_START=1<<8, GP2X_SELECT=1<<9, GP2X_L=1<<10, GP2X_R=1<<11,
	42	GP2X_A=1<<12, GP2X_B=1<<13, GP2X_X=1<<14, GP2X_Y=1<<15,
	43	GP2X_VOL_UP=1<<23, GP2X_VOL_DOWN=1<<22, GP2X_PUSH=1<<27 };
	44
	45	static void key_press_event(int keycode)
	46	{
	47	switch (keycode)
	48	{
	49	case 111:
	50	case 0x62: current_keys \|= GP2X_UP; break;
	51	case 116:
	52	case 0x68: current_keys \|= GP2X_DOWN; break;
	53	case 113:
	54	case 0x64: current_keys \|= GP2X_LEFT; break;
	55	case 114:
	56	case 0x66: current_keys \|= GP2X_RIGHT; break;
	57	case 0x24: current_keys \|= GP2X_START; break; // enter
	58	case 0x23: current_keys \|= GP2X_SELECT;break; // ]
	59	case 0x34: current_keys \|= GP2X_A; break; // z
	60	case 0x35: current_keys \|= GP2X_X; break; // x
	61	case 0x36: current_keys \|= GP2X_B; break; // c
	62	case 0x37: current_keys \|= GP2X_Y; break; // v
	63	case 0x27: current_keys \|= GP2X_L; break; // s
	64	case 0x28: current_keys \|= GP2X_R; break; // d
	65	case 0x29: current_keys \|= GP2X_PUSH; break; // f
	66	case 0x18: current_keys \|= GP2X_VOL_DOWN;break; // q
	67	case 0x19: current_keys \|= GP2X_VOL_UP;break; // w
	68	case 0x2d: log_io_clear(); break; // k
	69	case 0x2e: log_io_dump(); break; // l
	70	case 0x17: { // tab
	71	extern int PicoReset(void);
	72	PicoReset();
	73	break;
	74	}
	75	}
	76	}
	77
	78	static void key_release_event(int keycode)
	79	{
	80	switch (keycode)
	81	{
	82	case 111:
	83	case 0x62: current_keys &= ~GP2X_UP; break;
	84	case 116:
	85	case 0x68: current_keys &= ~GP2X_DOWN; break;
	86	case 113:
	87	case 0x64: current_keys &= ~GP2X_LEFT; break;
	88	case 114:
	89	case 0x66: current_keys &= ~GP2X_RIGHT; break;
	90	case 0x24: current_keys &= ~GP2X_START; break; // enter
	91	case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
	92	case 0x34: current_keys &= ~GP2X_A; break; // z
	93	case 0x35: current_keys &= ~GP2X_X; break; // x
	94	case 0x36: current_keys &= ~GP2X_B; break; // c
	95	case 0x37: current_keys &= ~GP2X_Y; break; // v
	96	case 0x27: current_keys &= ~GP2X_L; break; // s
	97	case 0x28: current_keys &= ~GP2X_R; break; // d
	98	case 0x29: current_keys &= ~GP2X_PUSH; break; // f
	99	case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
	100	case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
	101	}
	102	}
	103
	104	/* --- */
	105
	106	#include <X11/Xlib.h>
	107	#include <X11/Xutil.h>
	108
	109	static Display *xlib_display;
	110	static Window xlib_window;
	111	static XImage *ximage;
	112
	113	static void ximage_realloc(Display display, Visual visual)
	114	{
	115	void *xlib_screen;
	116
	117	XLockDisplay(xlib_display);
	118
	119	if (ximage != NULL)
	120	XDestroyImage(ximage);
	121	ximage = NULL;
	122
	123	xlib_screen = calloc(scr_w * scr_h, 4);
	124	if (xlib_screen != NULL)
	125	ximage = XCreateImage(display, visual, 24, ZPixmap, 0,
	126	xlib_screen, scr_w, scr_h, 32, 0);
	127	if (ximage == NULL)
	128	fprintf(stderr, "failed to alloc ximage\n");
	129
	130	XUnlockDisplay(xlib_display);
	131	}
	132
	133	static void xlib_update(void)
	134	{
	135	Status xstatus;
	136
	137	XLockDisplay(xlib_display);
	138
	139	xstatus = XPutImage(xlib_display, xlib_window, DefaultGC(xlib_display, 0), ximage,
	140	0, 0, 0, 0, g_screen_width, g_screen_height);
	141	if (xstatus != 0)
	142	fprintf(stderr, "XPutImage %d\n", xstatus);
	143
	144	XUnlockDisplay(xlib_display);
	145	}
	146
	147	static void xlib_threadf(void targ)
	148	{
	149	unsigned int width, height, display_width, display_height;
	150	sem_t *sem = targ;
	151	XTextProperty windowName;
	152	Window win;
	153	XEvent report;
	154	Display *display;
	155	Visual *visual;
	156	int screen;
	157
	158	XInitThreads();
	159
	160	xlib_display = display = XOpenDisplay(NULL);
	161	if (display == NULL)
	162	{
	163	fprintf(stderr, "cannot connect to X server %s\n",
	164	XDisplayName(NULL));
	165	sem_post(sem);
	166	return NULL;
	167	}
	168
	169	visual = DefaultVisual(display, 0);
	170	if (visual->class != TrueColor)
	171	{
	172	fprintf(stderr, "cannot handle non true color visual\n");
	173	XCloseDisplay(display);
	174	sem_post(sem);
	175	return NULL;
	176	}
	177
	178	printf("X vendor: %s, rel: %d, display: %s, protocol ver: %d.%d\n", ServerVendor(display),
	179	VendorRelease(display), DisplayString(display), ProtocolVersion(display),
	180	ProtocolRevision(display));
	181
	182	screen = DefaultScreen(display);
	183
	184	ximage_realloc(display, visual);
	185	sem_post(sem);
	186
	187	display_width = DisplayWidth(display, screen);
	188	display_height = DisplayHeight(display, screen);
	189
	190	xlib_window = win = XCreateSimpleWindow(display,
	191	RootWindow(display, screen),
	192	display_width / 2 - scr_w / 2,
	193	display_height / 2 - scr_h / 2,
	194	scr_w + 2, scr_h + 2, 1,
	195	BlackPixel(display, screen),
	196	BlackPixel(display, screen));
	197
	198	XStringListToTextProperty((char **)&verstring, 1, &windowName);
	199	XSetWMName(display, win, &windowName);
	200
	201	XSelectInput(display, win, ExposureMask \|
	202	KeyPressMask \| KeyReleaseMask \|
	203	StructureNotifyMask);
	204
	205	XMapWindow(display, win);
	206
	207	while (1)
	208	{
	209	XNextEvent(display, &report);
	210	switch (report.type)
	211	{
	212	case Expose:
	213	while (XCheckTypedEvent(display, Expose, &report))
	214	;
	215	xlib_update();
	216	break;
	217
	218	case ConfigureNotify:
	219	width = report.xconfigure.width;
	220	height = report.xconfigure.height;
	221	if (scr_w != width - 2 \|\| scr_h != height - 2) {
	222	scr_w = width - 2;
	223	scr_h = height - 2;
	224	scr_changed = 1;
	225	}
	226	break;
	227
	228	case ButtonPress:
	229	break;
	230
	231	case KeyPress:
	232	key_press_event(report.xkey.keycode);
	233	break;
	234
	235	case KeyRelease:
	236	key_release_event(report.xkey.keycode);
	237	break;
	238
	239	default:
	240	break;
	241	}
	242	}
	243	}
	244
	245	static void xlib_init(void)
	246	{
	247	pthread_t x_thread;
	248	sem_t xlib_sem;
	249
	250	sem_init(&xlib_sem, 0, 0);
	251
	252	pthread_create(&x_thread, NULL, xlib_threadf, &xlib_sem);
	253	pthread_detach(x_thread);
	254
	255	sem_wait(&xlib_sem);
	256	sem_destroy(&xlib_sem);
	257	}
	258	#endif // !ARM
	259
	260	/* --- */
	261
	262	static void realloc_screen(void)
	263	{
	264	void *old = g_screen_ptr;
	265	int i;
	266	g_screen_width = scr_w;
	267	g_screen_height = scr_h;
	268	g_screen_ptr = calloc(g_screen_width * g_screen_height * 2, 1);
	269	free(old);
	270	scr_changed = 0;
	271
	272	for (i = 0; i < 4; i++)
	273	gp2x_screens[i] = g_screen_ptr;
	274	}
	275
	276	/* gp2x/emu.c stuff, most to be rm'd */
	277	static void gp2x_video_flip_(void)
	278	{
	279	#ifndef ARM
	280	unsigned int *image;
	281	int pixel_count, i;
	282
	283	if (ximage == NULL)
	284	return;
	285
	286	pixel_count = g_screen_width * g_screen_height;
	287	image = (void *)ximage->data;
	288
	289	if (current_bpp == 8)
	290	{
	291	unsigned char *pixels = g_screen_ptr;
	292	int pix;
	293
	294	for (i = 0; i < pixel_count; i++)
	295	{
	296	pix = current_pal[pixels[i]];
	297	image[i] = pix;
	298	}
	299	}
	300	else
	301	{
	302	unsigned short *pixels = g_screen_ptr;
	303
	304	for (i = 0; i < pixel_count; i++)
	305	{
	306	/* in: rrrr rggg gggb bbbb */
	307	/* out: rrrr r000 gggg gg00 bbbb b000 */
	308	image[i] = (pixels[i] << 8) & 0xf80000;
	309	image[i] \|= (pixels[i] << 5) & 0x00fc00;
	310	image[i] \|= (pixels[i] << 3) & 0x0000f8;
	311	}
	312	}
	313	xlib_update();
	314
	315	if (scr_changed) {
	316	realloc_screen();
	317	ximage_realloc(xlib_display, DefaultVisual(xlib_display, 0));
	318	}
	319	#endif
	320	}
	321
	322	static void gp2x_video_changemode_ll_(int bpp)
	323	{
	324	current_bpp = bpp;
	325	}
	326
	327	static void gp2x_video_setpalette_(int *pal, int len)
	328	{
	329	memcpy(current_pal, pal, len*4);
	330	}
	331
	332	void gp2x_memcpy_all_buffers(void *data, int offset, int len)
	333	{
	334	}
	335
	336	void gp2x_memset_all_buffers(int offset, int byte, int len)
	337	{
	338	memset((char *)g_screen_ptr + offset, byte, len);
	339	}
	340
	341	void gp2x_video_changemode(int bpp)
	342	{
	343	gp2x_video_changemode_ll_(bpp);
	344	}
	345
	346	void gp2x_make_fb_bufferable(int yes)
	347	{
	348	}
	349
	350	int soc_detect(void)
	351	{
	352	return 0;
	353	}
	354
	355	/* plat */
	356	static char menu_bg_buffer[3202402];
	357	char cpu_clk_name[16] = "GP2X CPU clocks";
	358
	359	void plat_video_menu_enter(int is_rom_loaded)
	360	{
	361	if (is_rom_loaded)
	362	{
	363	// darken the active framebuffer
	364	memset(g_screen_ptr, 0, 32082);
	365	menu_darken_bg((char )g_screen_ptr + 32082, 320224, 1);
	366	memset((char )g_screen_ptr + 3202322, 0, 3208*2);
	367	}
	368	else
	369	{
	370	char buff[256];
	371
	372	// should really only happen once, on startup..
	373	emu_make_path(buff, "skin/background.png", sizeof(buff));
	374	if (readpng(g_screen_ptr, buff, READPNG_BG) < 0)
	375	memset(g_screen_ptr, 0, 3202402);
	376	}
	377
	378	memcpy(menu_bg_buffer, g_screen_ptr, 3202402);
	379
	380	// switch to 16bpp
	381	gp2x_video_changemode_ll_(16);
	382	gp2x_video_flip_();
	383	}
	384
	385	void plat_video_menu_begin(void)
	386	{
	387	memcpy(g_screen_ptr, menu_bg_buffer, 3202402);
	388	}
	389
	390	void plat_video_menu_end(void)
	391	{
	392	gp2x_video_flip_();
	393	}
	394
	395	void plat_validate_config(void)
	396	{
	397	extern int PicoOpt;
	398	// PicoOpt &= ~POPT_EXT_FM;
	399	PicoOpt &= ~(1<<17); // POPT_EN_SVP_DRC
	400	}
	401
	402	void plat_early_init(void)
	403	{
	404	}
	405
	406	void plat_init(void)
	407	{
	408	realloc_screen();
	409	memset(g_screen_ptr, 0, g_screen_width * g_screen_height * 2);
	410
	411	// snd
	412	sndout_oss_init();
	413
	414	#ifndef ARM
	415	xlib_init();
	416	#endif
	417	}
	418
	419	void plat_finish(void)
	420	{
	421	free(g_screen_ptr);
	422	sndout_oss_exit();
	423	}
	424
	425	/* nasty */
	426	static void do_nothing()
	427	{
	428	}
	429
	430	void *gp2x_video_flip = gp2x_video_flip_;
	431	void *gp2x_video_flip2 = gp2x_video_flip_;
	432	void *gp2x_video_changemode_ll = gp2x_video_changemode_ll_;
	433	void *gp2x_video_setpalette = gp2x_video_setpalette_;
	434
	435	void *gp2x_video_RGB_setscaling = do_nothing;
	436	void *gp2x_video_wait_vsync = do_nothing;
	437	void *gp2x_set_cpuclk = do_nothing;
	438	void *gp2x_read_battery = do_nothing;
	439	void *set_lcd_custom_rate = do_nothing;
	440	void *unset_lcd_custom_rate = do_nothing;
	441	void *set_lcd_gamma = do_nothing;
	442	void *set_ram_timings = do_nothing;
	443	void *unset_ram_timings = do_nothing;
	444
	445	/* joy */
	446	int gp2x_touchpad_read(int x, int y)
	447	{
	448	return -1;
	449	}
	450
	451	/* misc */
	452	void spend_cycles(int c)
	453	{
	454	usleep(c/200);
	455	}
	456
	457	int mp3_get_bitrate(FILE *f, int size)
	458	{
	459	return 128;
	460	}
	461
	462	void mp3_start_play(FILE *f, int pos)
	463	{
	464	}
	465
	466	void mp3_update(int *buffer, int length, int stereo)
	467	{
	468	}
	469
	470	void cache_flush_d_inval_i()
	471	{
	472	}
	473
	474	/* lprintf */
	475	void lprintf(const char *fmt, ...)
	476	{
	477	va_list vl;
	478
	479	va_start(vl, fmt);
	480	vprintf(fmt, vl);
	481	va_end(vl);
	482	}
	483