[picodrive.git] / platform / linux / gp2x.c

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

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

#include "../gp2x/emu.h"
#include "../gp2x/gp2x.h"
#include "../gp2x/usbjoy.h"
#include "../gp2x/version.h"

#include "log_io.h"

void *gp2x_screen;
static int current_bpp = 8;
static int current_pal[256];
static unsigned long current_keys = 0;
static int sounddev = 0, mixerdev = 0;
static const char *verstring = "PicoDrive " VERSION;

// dummies
char *ext_menu = 0, *ext_state = 0;
int mix_32_to_16l_level;

/* gtk */
struct gtk_global_struct
{
        GtkWidget *window;
        GtkWidget *pixmap1;
} gtk_items;


static gboolean delete_event (GtkWidget *widget, GdkEvent *event, gpointer data)
{
	return FALSE;
}

static void destroy (GtkWidget *widget, gpointer data)
{
	gtk_main_quit ();
}

static gint key_press_event (GtkWidget *widget, GdkEventKey *event)
{
	switch (event->hardware_keycode)
	{
		case 0x62: current_keys |= GP2X_UP;    break;
		case 0x68: current_keys |= GP2X_DOWN;  break;
		case 0x64: current_keys |= GP2X_LEFT;  break;
		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;
		}
	}

	return 0;
}

static gint key_release_event (GtkWidget *widget, GdkEventKey *event)
{
	switch (event->hardware_keycode)
	{
		case 0x62: current_keys &= ~GP2X_UP;    break;
		case 0x68: current_keys &= ~GP2X_DOWN;  break;
		case 0x64: current_keys &= ~GP2X_LEFT;  break;
		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
	}

	return 0;
}

static void *gtk_threadf(void *targ)
{
	int argc = 0;
	char *argv[] = { "" };
	GtkWidget *box;
	sem_t *sem = targ;

	g_thread_init (NULL);
	gdk_threads_init ();
	gdk_set_locale ();
	gtk_init (&argc, (char ***) &argv);

	/* create new window */
	gtk_items.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	g_signal_connect (G_OBJECT (gtk_items.window), "delete_event",
			G_CALLBACK (delete_event), NULL);

	g_signal_connect (G_OBJECT (gtk_items.window), "destroy",
			G_CALLBACK (destroy), NULL);

	g_signal_connect (G_OBJECT (gtk_items.window), "key_press_event",
			G_CALLBACK (key_press_event), NULL);

	g_signal_connect (G_OBJECT (gtk_items.window), "key_release_event",
			G_CALLBACK (key_release_event), NULL);

	gtk_container_set_border_width (GTK_CONTAINER (gtk_items.window), 2);
	gtk_window_set_title ((GtkWindow *) gtk_items.window, verstring);

	box = gtk_hbox_new(FALSE, 0);
	gtk_widget_show(box);
	gtk_container_add (GTK_CONTAINER (gtk_items.window), box);

	/* live pixmap */
	gtk_items.pixmap1 = gtk_image_new ();
	gtk_container_add (GTK_CONTAINER (box), gtk_items.pixmap1);
	gtk_widget_show (gtk_items.pixmap1);
	gtk_widget_set_size_request (gtk_items.pixmap1, 320, 240);

	gtk_widget_show  (gtk_items.window);

	sem_post(sem);

	gtk_main();

	printf("linux: gtk thread finishing\n");
	exit(1);

	return NULL;
}

static void gtk_initf(void)
{
	pthread_t gtk_thread;
	sem_t sem;
	sem_init(&sem, 0, 0);

	pthread_create(&gtk_thread, NULL, gtk_threadf, &sem);
	pthread_detach(gtk_thread);

	sem_wait(&sem);
	sem_close(&sem);
}

void finalize_image(guchar *pixels, gpointer data)
{
	free(pixels);
}

/* --- */

void gp2x_init(void)
{
	printf("entering init()\n"); fflush(stdout);

	gp2x_screen = malloc(320*240*2 + 320*2);
	memset(gp2x_screen, 0, 320*240*2 + 320*2);

	// snd
  	mixerdev = open("/dev/mixer", O_RDWR);
	if (mixerdev == -1)
		printf("open(\"/dev/mixer\") failed with %i\n", errno);

	gtk_initf();

	gp2x_usbjoy_init();

	printf("exitting init()\n"); fflush(stdout);
}

void gp2x_deinit(void)
{
	free(gp2x_screen);
	if (sounddev > 0) close(sounddev);
	close(mixerdev);
	gp2x_usbjoy_deinit();
}

/* video */
void gp2x_video_flip(void)
{
	GdkPixbuf	*pixbuf;
	unsigned char	*image;
	int		i;

	gdk_threads_enter();

	image = malloc (320*240*3);
	if (image == NULL)
	{
		gdk_threads_leave();
		return;
	}

	if (current_bpp == 8)
	{
		unsigned char *pixels = gp2x_screen;
		int pix;

		for (i = 0; i < 320*240; i++)
		{
			pix = current_pal[pixels[i]];
			image[3 * i + 0] = pix >> 16;
			image[3 * i + 1] = pix >>  8;
			image[3 * i + 2] = pix;
		}
	}
	else
	{
		unsigned short *pixels = gp2x_screen;

		for (i = 0; i < 320*240; i++)
		{
			/*  in:           rrrr rggg gggb bbbb */
			/* out: rrrr r000 gggg gg00 bbbb b000 */
			image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
			image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
			image[3 * i + 2] = (pixels[i] << 3);
		}
	}

	pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
			FALSE, 8, 320, 240, 320*3, finalize_image, NULL);
	gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
	g_object_unref (pixbuf);

	gdk_threads_leave();
}

void gp2x_video_flip2(void)
{
	gp2x_video_flip();
}

void gp2x_video_changemode(int bpp)
{
	current_bpp = bpp;
}

void gp2x_video_changemode2(int bpp)
{
	current_bpp = bpp;
}

void gp2x_video_setpalette(int *pal, int len)
{
	memcpy(current_pal, pal, len*4);
}

void gp2x_video_flush_cache(void)
{
}

void gp2x_video_RGB_setscaling(int v_offs, int W, int H)
{
}

void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
{
	if ((char *)gp2x_screen + offset != data)
		memcpy((char *)gp2x_screen + offset, data, len);
}

void gp2x_memcpy_all_buffers(void *data, int offset, int len)
{
	memcpy((char *)gp2x_screen + offset, data, len);
}


void gp2x_memset_all_buffers(int offset, int byte, int len)
{
	memset((char *)gp2x_screen + offset, byte, len);
}

void gp2x_pd_clone_buffer2(void)
{
	memset(gp2x_screen, 0, 320*240*2);
}

/* sound */
static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;

void gp2x_start_sound(int rate, int bits, int stereo)
{
	int frag = 0, bsize, buffers;

	// if no settings change, we don't need to do anything
	if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;

	if (sounddev > 0) close(sounddev);
	sounddev = open("/dev/dsp", O_WRONLY|O_ASYNC);
	if (sounddev == -1)
		printf("open(\"/dev/dsp\") failed with %i\n", errno);

	ioctl(sounddev, SNDCTL_DSP_SPEED,  &rate);
	ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits);
	ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo);
	// calculate buffer size
	buffers = 16;
	bsize = rate / 32;
	if (rate > 22050) { bsize*=4; buffers*=2; } // 44k mode seems to be very demanding
	while ((bsize>>=1)) frag++;
	frag |= buffers<<16; // 16 buffers
	ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag);
	printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n",
		rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff));

	s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
}

void gp2x_sound_write(void *buff, int len)
{
	write(sounddev, buff, len);
}

void gp2x_sound_sync(void)
{
	ioctl(sounddev, SOUND_PCM_SYNC, 0);
}

void gp2x_sound_volume(int l, int r)
{
 	l=l<0?0:l; l=l>255?255:l; r=r<0?0:r; r=r>255?255:r;
 	l<<=8; l|=r;
 	ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &l); /*SOUND_MIXER_WRITE_VOLUME*/
}

/* joy */
unsigned long gp2x_joystick_read(int allow_usb_joy)
{
	unsigned long value = current_keys;
	int i;

	if (allow_usb_joy && num_of_joys > 0) {
		// check the usb joy as well..
		gp2x_usbjoy_update();
		for (i = 0; i < num_of_joys; i++)
			value |= gp2x_usbjoy_check(i);
	}

	return value;
}

/* 940 */
int crashed_940 = 0;
void Pause940(int yes)
{
}

void Reset940(int yes, int bank)
{
}

/* faking gp2x cpuctrl.c */
void cpuctrl_init(void)
{
}

void cpuctrl_deinit(void)
{
}

void set_FCLK(unsigned MHZ)
{
}

void Disable_940(void)
{
}

void gp2x_video_wait_vsync(void)
{
}

void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
{
}

void set_gamma(int g100, int A_SNs_curve)
{
}

void set_LCD_custom_rate(int rate)
{
}

void unset_LCD_custom_rate(void)
{
}

/* squidgehack.c */
int mmuhack(void)
{
	return 0;
}


int mmuunhack(void)
{
	return 0;
}


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

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

	va_start(vl, fmt);
	vprintf(fmt, vl);
	va_end(vl);
}
Commit	Line	Data
cc68a136	1	/* faking/emulating gp2x.c by using gtk */
	2	#include <stdio.h>
	3	#include <stdlib.h>
	4	#include <string.h>
	5	#include <pthread.h>
69996cb7	6	#include <semaphore.h>
cc68a136	7	#include <gtk/gtk.h>
	8
	9	#include <unistd.h>
	10	#include <sys/types.h>
	11	#include <sys/stat.h>
	12	#include <sys/ioctl.h>
	13	#include <sys/soundcard.h>
	14	#include <fcntl.h>
	15	#include <errno.h>
	16
	17	#include "../gp2x/emu.h"
	18	#include "../gp2x/gp2x.h"
	19	#include "../gp2x/usbjoy.h"
	20	#include "../gp2x/version.h"
	21
4f65685b	22	#include "log_io.h"
4f65685b	23
cc68a136	24	void *gp2x_screen;
	25	static int current_bpp = 8;
	26	static int current_pal[256];
	27	static unsigned long current_keys = 0;
	28	static int sounddev = 0, mixerdev = 0;
	29	static const char *verstring = "PicoDrive " VERSION;
	30
	31	// dummies
	32	char ext_menu = 0, ext_state = 0;
f53f286a	33	int mix_32_to_16l_level;
cc68a136	34
	35	/* gtk */
	36	struct gtk_global_struct
	37	{
	38	GtkWidget *window;
	39	GtkWidget *pixmap1;
	40	} gtk_items;
	41
	42
	43	static gboolean delete_event (GtkWidget widget, GdkEvent event, gpointer data)
	44	{
	45	return FALSE;
	46	}
	47
	48	static void destroy (GtkWidget *widget, gpointer data)
	49	{
	50	gtk_main_quit ();
	51	}
	52
	53	static gint key_press_event (GtkWidget widget, GdkEventKey event)
	54	{
	55	switch (event->hardware_keycode)
	56	{
	57	case 0x62: current_keys \|= GP2X_UP; break;
	58	case 0x68: current_keys \|= GP2X_DOWN; break;
	59	case 0x64: current_keys \|= GP2X_LEFT; break;
	60	case 0x66: current_keys \|= GP2X_RIGHT; break;
	61	case 0x24: current_keys \|= GP2X_START; break; // enter
	62	case 0x23: current_keys \|= GP2X_SELECT;break; // ]
	63	case 0x34: current_keys \|= GP2X_A; break; // z
	64	case 0x35: current_keys \|= GP2X_X; break; // x
	65	case 0x36: current_keys \|= GP2X_B; break; // c
	66	case 0x37: current_keys \|= GP2X_Y; break; // v
	67	case 0x27: current_keys \|= GP2X_L; break; // s
	68	case 0x28: current_keys \|= GP2X_R; break; // d
	69	case 0x29: current_keys \|= GP2X_PUSH; break; // f
	70	case 0x18: current_keys \|= GP2X_VOL_DOWN;break; // q
	71	case 0x19: current_keys \|= GP2X_VOL_UP;break; // w
4f65685b	72	case 0x2d: log_io_clear(); break; // k
4f65685b	73	case 0x2e: log_io_dump(); break; // l
1e6b5e39	74	case 0x17: { // tab
	75	extern int PicoReset(void);
	76	PicoReset();
	77	break;
	78	}
cc68a136	79	}
	80
	81	return 0;
	82	}
	83
	84	static gint key_release_event (GtkWidget widget, GdkEventKey event)
	85	{
	86	switch (event->hardware_keycode)
	87	{
	88	case 0x62: current_keys &= ~GP2X_UP; break;
	89	case 0x68: current_keys &= ~GP2X_DOWN; break;
	90	case 0x64: current_keys &= ~GP2X_LEFT; break;
	91	case 0x66: current_keys &= ~GP2X_RIGHT; break;
	92	case 0x24: current_keys &= ~GP2X_START; break; // enter
	93	case 0x23: current_keys &= ~GP2X_SELECT;break; // ]
	94	case 0x34: current_keys &= ~GP2X_A; break; // z
	95	case 0x35: current_keys &= ~GP2X_X; break; // x
	96	case 0x36: current_keys &= ~GP2X_B; break; // c
	97	case 0x37: current_keys &= ~GP2X_Y; break; // v
	98	case 0x27: current_keys &= ~GP2X_L; break; // s
	99	case 0x28: current_keys &= ~GP2X_R; break; // d
	100	case 0x29: current_keys &= ~GP2X_PUSH; break; // f
	101	case 0x18: current_keys &= ~GP2X_VOL_DOWN;break; // q
	102	case 0x19: current_keys &= ~GP2X_VOL_UP;break; // w
	103	}
	104
	105	return 0;
	106	}
	107
69996cb7	108	static void gtk_threadf(void targ)
cc68a136	109	{
	110	int argc = 0;
	111	char *argv[] = { "" };
	112	GtkWidget *box;
69996cb7	113	sem_t *sem = targ;
cc68a136	114
	115	g_thread_init (NULL);
	116	gdk_threads_init ();
	117	gdk_set_locale ();
	118	gtk_init (&argc, (char ***) &argv);
	119
	120	/* create new window */
	121	gtk_items.window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
	122	g_signal_connect (G_OBJECT (gtk_items.window), "delete_event",
	123	G_CALLBACK (delete_event), NULL);
	124
	125	g_signal_connect (G_OBJECT (gtk_items.window), "destroy",
	126	G_CALLBACK (destroy), NULL);
	127
	128	g_signal_connect (G_OBJECT (gtk_items.window), "key_press_event",
	129	G_CALLBACK (key_press_event), NULL);
	130
	131	g_signal_connect (G_OBJECT (gtk_items.window), "key_release_event",
	132	G_CALLBACK (key_release_event), NULL);
	133
	134	gtk_container_set_border_width (GTK_CONTAINER (gtk_items.window), 2);
	135	gtk_window_set_title ((GtkWindow *) gtk_items.window, verstring);
	136
	137	box = gtk_hbox_new(FALSE, 0);
	138	gtk_widget_show(box);
	139	gtk_container_add (GTK_CONTAINER (gtk_items.window), box);
	140
	141	/* live pixmap */
	142	gtk_items.pixmap1 = gtk_image_new ();
	143	gtk_container_add (GTK_CONTAINER (box), gtk_items.pixmap1);
	144	gtk_widget_show (gtk_items.pixmap1);
	145	gtk_widget_set_size_request (gtk_items.pixmap1, 320, 240);
	146
	147	gtk_widget_show (gtk_items.window);
	148
69996cb7	149	sem_post(sem);
	150
	151	gtk_main();
	152
	153	printf("linux: gtk thread finishing\n");
	154	exit(1);
	155
	156	return NULL;
	157	}
	158
	159	static void gtk_initf(void)
	160	{
	161	pthread_t gtk_thread;
	162	sem_t sem;
	163	sem_init(&sem, 0, 0);
	164
	165	pthread_create(&gtk_thread, NULL, gtk_threadf, &sem);
	166	pthread_detach(gtk_thread);
cc68a136	167
69996cb7	168	sem_wait(&sem);
69996cb7	169	sem_close(&sem);
cc68a136	170	}
	171
	172	void finalize_image(guchar *pixels, gpointer data)
	173	{
	174	free(pixels);
	175	}
	176
	177	/* --- */
	178
	179	void gp2x_init(void)
	180	{
	181	printf("entering init()\n"); fflush(stdout);
	182
	183	gp2x_screen = malloc(3202402 + 320*2);
83bd0b76	184	memset(gp2x_screen, 0, 3202402 + 320*2);
cc68a136	185
	186	// snd
	187	mixerdev = open("/dev/mixer", O_RDWR);
	188	if (mixerdev == -1)
	189	printf("open(\"/dev/mixer\") failed with %i\n", errno);
	190
	191	gtk_initf();
	192
	193	gp2x_usbjoy_init();
	194
	195	printf("exitting init()\n"); fflush(stdout);
	196	}
	197
	198	void gp2x_deinit(void)
	199	{
	200	free(gp2x_screen);
	201	if (sounddev > 0) close(sounddev);
	202	close(mixerdev);
	203	gp2x_usbjoy_deinit();
	204	}
	205
	206	/* video */
	207	void gp2x_video_flip(void)
	208	{
	209	GdkPixbuf *pixbuf;
	210	unsigned char *image;
	211	int i;
	212
	213	gdk_threads_enter();
	214
	215	image = malloc (3202403);
	216	if (image == NULL)
	217	{
	218	gdk_threads_leave();
	219	return;
	220	}
	221
	222	if (current_bpp == 8)
	223	{
	224	unsigned char *pixels = gp2x_screen;
	225	int pix;
	226
	227	for (i = 0; i < 320*240; i++)
	228	{
	229	pix = current_pal[pixels[i]];
	230	image[3 * i + 0] = pix >> 16;
	231	image[3 * i + 1] = pix >> 8;
	232	image[3 * i + 2] = pix;
	233	}
	234	}
	235	else
	236	{
	237	unsigned short *pixels = gp2x_screen;
	238
	239	for (i = 0; i < 320*240; i++)
	240	{
	241	/* in: rrrr rggg gggb bbbb */
	242	/* out: rrrr r000 gggg gg00 bbbb b000 */
	243	image[3 * i + 0] = (pixels[i] >> 8) & 0xf8;
	244	image[3 * i + 1] = (pixels[i] >> 3) & 0xfc;
	245	image[3 * i + 2] = (pixels[i] << 3);
	246	}
	247	}
	248
249	pixbuf = gdk_pixbuf_new_from_data (image, GDK_COLORSPACE_RGB,
250	FALSE, 8, 320, 240, 320*3, finalize_image, NULL);
251	gtk_image_set_from_pixbuf (GTK_IMAGE (gtk_items.pixmap1), pixbuf);
252	g_object_unref (pixbuf);
253
254	gdk_threads_leave();
255	}
256
e11c5548	257	void gp2x_video_flip2(void)
	258	{
	259	gp2x_video_flip();
	260	}
	261
cc68a136	262	void gp2x_video_changemode(int bpp)
	263	{
	264	current_bpp = bpp;
	265	}
	266
e11c5548	267	void gp2x_video_changemode2(int bpp)
	268	{
	269	current_bpp = bpp;
	270	}
	271
cc68a136	272	void gp2x_video_setpalette(int *pal, int len)
	273	{
	274	memcpy(current_pal, pal, len*4);
	275	}
	276
a12e0116	277	void gp2x_video_flush_cache(void)
	278	{
	279	}
	280
2433f409	281	void gp2x_video_RGB_setscaling(int v_offs, int W, int H)
cc68a136	282	{
	283	}
	284
68cba51e	285	void gp2x_memcpy_buffers(int buffers, void *data, int offset, int len)
68cba51e	286	{
a12e0116	287	if ((char *)gp2x_screen + offset != data)
a12e0116	288	memcpy((char *)gp2x_screen + offset, data, len);
68cba51e	289	}
68cba51e	290
cc68a136	291	void gp2x_memcpy_all_buffers(void *data, int offset, int len)
	292	{
	293	memcpy((char *)gp2x_screen + offset, data, len);
	294	}
	295
	296
	297	void gp2x_memset_all_buffers(int offset, int byte, int len)
	298	{
	299	memset((char *)gp2x_screen + offset, byte, len);
	300	}
	301
e11c5548	302	void gp2x_pd_clone_buffer2(void)
e11c5548	303	{
a12e0116	304	memset(gp2x_screen, 0, 3202402);
e11c5548	305	}
cc68a136	306
	307	/* sound */
	308	static int s_oldrate = 0, s_oldbits = 0, s_oldstereo = 0;
	309
	310	void gp2x_start_sound(int rate, int bits, int stereo)
	311	{
	312	int frag = 0, bsize, buffers;
	313
	314	// if no settings change, we don't need to do anything
	315	if (rate == s_oldrate && s_oldbits == bits && s_oldstereo == stereo) return;
	316
	317	if (sounddev > 0) close(sounddev);
	318	sounddev = open("/dev/dsp", O_WRONLY\|O_ASYNC);
	319	if (sounddev == -1)
	320	printf("open(\"/dev/dsp\") failed with %i\n", errno);
	321
	322	ioctl(sounddev, SNDCTL_DSP_SPEED, &rate);
	323	ioctl(sounddev, SNDCTL_DSP_SETFMT, &bits);
	324	ioctl(sounddev, SNDCTL_DSP_STEREO, &stereo);
	325	// calculate buffer size
	326	buffers = 16;
	327	bsize = rate / 32;
	328	if (rate > 22050) { bsize=4; buffers=2; } // 44k mode seems to be very demanding
	329	while ((bsize>>=1)) frag++;
	330	frag \|= buffers<<16; // 16 buffers
	331	ioctl(sounddev, SNDCTL_DSP_SETFRAGMENT, &frag);
	332	printf("gp2x_set_sound: %i/%ibit/%s, %i buffers of %i bytes\n",
	333	rate, bits, stereo?"stereo":"mono", frag>>16, 1<<(frag&0xffff));
	334
	335	s_oldrate = rate; s_oldbits = bits; s_oldstereo = stereo;
	336	}
	337
	338	void gp2x_sound_write(void *buff, int len)
	339	{
	340	write(sounddev, buff, len);
	341	}
	342
cb0316e4	343	void gp2x_sound_sync(void)
	344	{
	345	ioctl(sounddev, SOUND_PCM_SYNC, 0);
	346	}
	347
cc68a136	348	void gp2x_sound_volume(int l, int r)
	349	{
	350	l=l<0?0:l; l=l>255?255:l; r=r<0?0:r; r=r>255?255:r;
	351	l<<=8; l\|=r;
	352	ioctl(mixerdev, SOUND_MIXER_WRITE_PCM, &l); /SOUND_MIXER_WRITE_VOLUME/
	353	}
	354
	355	/* joy */
	356	unsigned long gp2x_joystick_read(int allow_usb_joy)
	357	{
	358	unsigned long value = current_keys;
	359	int i;
	360
	361	if (allow_usb_joy && num_of_joys > 0) {
	362	// check the usb joy as well..
	363	gp2x_usbjoy_update();
	364	for (i = 0; i < num_of_joys; i++)
	365	value \|= gp2x_usbjoy_check(i);
	366	}
	367
	368	return value;
	369	}
	370
	371	/* 940 */
	372	int crashed_940 = 0;
	373	void Pause940(int yes)
	374	{
	375	}
	376
b837b69b	377	void Reset940(int yes, int bank)
cc68a136	378	{
	379	}
	380
	381	/* faking gp2x cpuctrl.c */
	382	void cpuctrl_init(void)
	383	{
	384	}
	385
	386	void cpuctrl_deinit(void)
	387	{
	388	}
	389
	390	void set_FCLK(unsigned MHZ)
	391	{
	392	}
	393
	394	void Disable_940(void)
	395	{
	396	}
	397
	398	void gp2x_video_wait_vsync(void)
	399	{
	400	}
	401
	402	void set_RAM_Timings(int tRC, int tRAS, int tWR, int tMRD, int tRFC, int tRP, int tRCD)
	403	{
	404	}
	405
82bc9cdd	406	void set_gamma(int g100, int A_SNs_curve)
cc68a136	407	{
	408	}
	409
4e8a534c	410	void set_LCD_custom_rate(int rate)
	411	{
	412	}
	413
	414	void unset_LCD_custom_rate(void)
	415	{
	416	}
cc68a136	417
	418	/* squidgehack.c */
	419	int mmuhack(void)
	420	{
	421	return 0;
	422	}
	423
	424
	425	int mmuunhack(void)
	426	{
	427	return 0;
	428	}
	429
	430
	431	/* misc */
	432	void spend_cycles(int c)
	433	{
46969540	434	usleep(c/200);
cc68a136	435	}
cc68a136	436
ca61ee42	437	/* lprintf */
	438	void lprintf(const char *fmt, ...)
	439	{
	440	va_list vl;
cc68a136	441
ca61ee42	442	va_start(vl, fmt);
	443	vprintf(fmt, vl);
	444	va_end(vl);
	445	}
cc68a136	446