[picodrive.git] / platform / pandora / emu.c

// (c) Copyright 2006-2009 notaz, All rights reserved.\r
// Free for non-commercial use.\r
\r
// For commercial use, separate licencing terms must be obtained.\r
\r
#include <stdio.h>\r
#include <unistd.h>\r
\r
#include "../common/emu.h"\r
#include "../common/menu.h"\r
#include "../common/plat.h"\r
#include "../common/arm_utils.h"\r
#include "../linux/sndout_oss.h"\r
#include "../linux/fbdev.h"\r
#include "asm_utils.h"\r
#include "version.h"\r
\r
#include <pico/pico_int.h>\r
\r
//#define USE_320_SCREEN 1\r
\r
\r
static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r
unsigned char *PicoDraw2FB = temp_frame;\r
const char *renderer_names[] = { NULL };\r
const char *renderer_names32x[] = { NULL };\r
char cpu_clk_name[] = "unused";\r
\r
\r
void pemu_prep_defconfig(void)\r
{\r
	// XXX: move elsewhere\r
	g_menubg_ptr = temp_frame;\r
\r
	defaultConfig.EmuOpt |= EOPT_VSYNC;\r
}\r
\r
void pemu_validate_config(void)\r
{\r
}\r
\r
// FIXME: cleanup\r
static void osd_text(int x, int y, const char *text)\r
{\r
	int len = strlen(text)*8;\r
\r
	if (0) {\r
		int *p, i, h;\r
		x &= ~3; // align x\r
		len = (len+3) >> 2;\r
		for (h = 0; h < 8; h++) {\r
			p = (int *) ((unsigned char *) g_screen_ptr+x+g_screen_width*(y+h));\r
			for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
		}\r
		emu_text_out8(x, y, text);\r
	} else {\r
		int *p, i, h;\r
		x &= ~1; // align x\r
		len++;\r
		for (h = 0; h < 16; h++) {\r
			p = (int *) ((unsigned short *) g_screen_ptr+x+g_screen_width*(y+h));\r
			for (i = len; i; i--, p++) *p = 0;//(*p>>2)&0x39e7;\r
		}\r
		text_out16(x, y, text);\r
	}\r
}\r
\r
static void draw_cd_leds(void)\r
{\r
//	static\r
	int old_reg;\r
//	if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
	old_reg = Pico_mcd->s68k_regs[0];\r
\r
	if (0) {\r
		// 8-bit modes\r
		unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
		unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
		*(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+ 4) =\r
		*(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+ 4) =\r
		*(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+ 4) = col_g;\r
		*(unsigned int *)((char *)g_screen_ptr + g_screen_width*2+12) =\r
		*(unsigned int *)((char *)g_screen_ptr + g_screen_width*3+12) =\r
		*(unsigned int *)((char *)g_screen_ptr + g_screen_width*4+12) = col_r;\r
	} else {\r
		// 16-bit modes\r
		unsigned int *p = (unsigned int *)((short *)g_screen_ptr + g_screen_width*2+4);\r
		unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
		unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
		*p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
		*p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += g_screen_width/2 - 12/2;\r
		*p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
	}\r
}\r
\r
#ifdef USE_320_SCREEN\r
\r
static int EmuScanBegin16(unsigned int num)\r
{\r
	DrawLineDest = (unsigned short *)g_screen_ptr + num*800 + 800/2 - 320/2;\r
	//int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
	//DrawLineDest = (unsigned short *)g_screen_ptr + num*w;\r
\r
	return 0;\r
}\r
\r
#else // USE_320_SCREEN\r
\r
static int EmuScanEnd16(unsigned int num)\r
{\r
	unsigned char  *ps=HighCol+8;\r
	unsigned short *pd;\r
	unsigned short *pal=HighPal;\r
	int sh = Pico.video.reg[0xC]&8;\r
	int len, mask = 0xff;\r
\r
	pd=(unsigned short *)g_screen_ptr + num*800*2 + 800/2 - 320*2/2;\r
\r
	if (Pico.m.dirtyPal)\r
		PicoDoHighPal555(sh);\r
\r
	if (Pico.video.reg[12]&1) {\r
		len = 320;\r
	} else {\r
		pd += 32*2;\r
		len = 256;\r
	}\r
\r
	if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
		mask=0x3f; // messed sprites, upper bits are priority stuff\r
\r
#if 1\r
	clut_line(pd, ps, pal, (mask<<16) | len);\r
#else\r
	for (; len > 0; len--)\r
	{\r
		unsigned int p = pal[*ps++ & mask];\r
		p |= p << 16;\r
		*(unsigned int *)pd = p;\r
		*(unsigned int *)(&pd[800]) = p;\r
		pd += 2;\r
	}\r
#endif\r
\r
	return 0;\r
}\r
\r
static int EmuScanEnd16_32x(unsigned int num)\r
{\r
	unsigned int *ps;\r
	unsigned int *pd;\r
	int len;\r
\r
	ps = (unsigned int *)temp_frame;\r
	pd = (unsigned int *)g_screen_ptr + (num*800*2 + 800/2 - 320*2/2) / 2;\r
\r
	for (len = 320/2; len > 0; len--, ps++) {\r
		unsigned int p, p1;\r
		p1 = *ps;\r
		p = p1 << 16;\r
		p |= p >> 16;\r
		*pd = pd[800/2] = p;\r
		pd++;\r
\r
		p = p1 >> 16;\r
		p |= p << 16;\r
		*pd = pd[800/2] = p;\r
		pd++;\r
	}\r
\r
	return 0;\r
}\r
#endif // USE_320_SCREEN\r
\r
void pemu_finalize_frame(const char *fps, const char *notice)\r
{\r
	if (notice || (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r
		if (notice)\r
			osd_text(4, 464, notice);\r
		if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
			osd_text(640, 464, fps);\r
	}\r
	if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
		draw_cd_leds();\r
}\r
\r
void plat_video_toggle_renderer(int change, int is_menu)\r
{\r
	// this will auto-select SMS/32X renderers\r
	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
}\r
\r
void plat_video_menu_enter(int is_rom_loaded)\r
{\r
}\r
\r
void plat_video_menu_begin(void)\r
{\r
	memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r
}\r
\r
void plat_video_menu_end(void)\r
{\r
	plat_video_flip();\r
}\r
\r
void plat_status_msg_clear(void)\r
{\r
	int s = g_screen_width * g_screen_height * 2;\r
	int l = g_screen_width * 16 * 2;\r
	int i;\r
\r
	for (i = 0; i < fbdev_buffer_count; i++)\r
		memset32((int *)((char *)fbdev_buffers[i] + s - l), 0, l / 4);\r
}\r
\r
void plat_status_msg_busy_next(const char *msg)\r
{\r
	plat_status_msg_clear();\r
	pemu_finalize_frame("", msg);\r
	plat_video_flip();\r
	emu_status_msg("");\r
	reset_timing = 1;\r
}\r
\r
void plat_status_msg_busy_first(const char *msg)\r
{\r
//	memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
	plat_status_msg_busy_next(msg);\r
}\r
\r
void plat_update_volume(int has_changed, int is_up)\r
{\r
	static int prev_frame = 0, wait_frames = 0;\r
	int vol = currentConfig.volume;\r
\r
	if (has_changed)\r
	{\r
		if (is_up) {\r
			if (vol < 99) vol++;\r
		} else {\r
			if (vol >  0) vol--;\r
		}\r
		wait_frames = 0;\r
		sndout_oss_setvol(vol, vol);\r
		currentConfig.volume = vol;\r
		emu_status_msg("VOL: %02i", vol);\r
		prev_frame = Pico.m.frame_count;\r
	}\r
}\r
\r
void pemu_forced_frame(int opts)\r
{\r
	int po_old = PicoOpt;\r
\r
	PicoOpt &= ~0x10;\r
	PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
\r
	Pico.m.dirtyPal = 1;\r
	PicoFrameDrawOnly();\r
\r
	PicoOpt = po_old;\r
}\r
\r
static void updateSound(int len)\r
{\r
	unsigned int t;\r
\r
	len <<= 1;\r
	if (PicoOpt & POPT_EN_STEREO)\r
		len <<= 1;\r
\r
	// sndout_oss_can_write() not reliable..\r
	if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r
		return;\r
\r
	/* avoid writing audio when lagging behind to prevent audio lag */\r
	if (PicoSkipFrame == 2)\r
		return;\r
\r
	t = plat_get_ticks_ms();\r
	sndout_oss_write(PsndOut, len);\r
	t = plat_get_ticks_ms() - t;\r
	if (t > 1)\r
		printf("audio lag %u\n", t);\r
}\r
\r
void pemu_sound_start(void)\r
{\r
	int target_fps = Pico.m.pal ? 50 : 60;\r
\r
	PsndOut = NULL;\r
\r
	if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
	{\r
		int snd_excess_add, frame_samples;\r
		int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
\r
		PsndRerate(Pico.m.frame_count ? 1 : 0);\r
\r
		frame_samples = PsndLen;\r
		snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r
		if (snd_excess_add != 0)\r
			frame_samples++;\r
\r
		printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
			PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r
		sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r
		//sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
		PicoWriteSound = updateSound;\r
		plat_update_volume(0, 0);\r
		memset(sndBuffer, 0, sizeof(sndBuffer));\r
		PsndOut = sndBuffer;\r
	}\r
}\r
\r
void pemu_sound_stop(void)\r
{\r
	sndout_oss_stop();\r
}\r
\r
void pemu_sound_wait(void)\r
{\r
	// don't need to do anything, writes will block by themselves\r
}\r
\r
void plat_debug_cat(char *str)\r
{\r
}\r
\r
void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r
{\r
	int i;\r
\r
	// clear whole screen in all buffers\r
	for (i = 0; i < fbdev_buffer_count; i++)\r
		memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r
\r
#ifdef USE_320_SCREEN\r
	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
	PicoScanBegin = EmuScanBegin16;\r
#else\r
	if (PicoAHW & PAHW_32X) {\r
		DrawLineDest = (unsigned short *)temp_frame;\r
		PicoDrawSetOutFormat(PDF_RGB555, 1);\r
		PicoScanBegin = NULL;\r
		PicoScanEnd = EmuScanEnd16_32x;\r
	} else {\r
		PicoDrawSetOutFormat(PDF_NONE, 0);\r
		PicoScanBegin = NULL;\r
		PicoScanEnd = EmuScanEnd16;\r
	}\r
#endif\r
}\r
\r
void pemu_loop_prep(void)\r
{\r
	emu_video_mode_change(0, 0, 0);\r
	pemu_sound_start();\r
}\r
\r
void pemu_loop_end(void)\r
{\r
	int po_old = PicoOpt;\r
	int eo_old = currentConfig.EmuOpt;\r
\r
	pemu_sound_stop();\r
	memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
\r
	/* do one more frame for menu bg */\r
	PicoOpt &= ~POPT_ALT_RENDERER;\r
	PicoOpt |= POPT_EN_SOFTSCALE|POPT_ACC_SPRITES;\r
	currentConfig.EmuOpt |= EOPT_16BPP;\r
\r
	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
	Pico.m.dirtyPal = 1;\r
	PicoFrame();\r
\r
	PicoOpt = po_old;\r
	currentConfig.EmuOpt = eo_old;\r
}\r
\r
void plat_wait_till_us(unsigned int us_to)\r
{\r
	unsigned int now;\r
	signed int diff;\r
\r
	now = plat_get_ticks_us();\r
\r
	// XXX: need to check NOHZ and djw kernel\r
	diff = (signed int)(us_to - now);\r
	if (diff > 10000) {\r
		//printf("sleep %d\n", us_to - now);\r
		usleep(diff * 15 / 16);\r
		now = plat_get_ticks_us();\r
		//printf(" wake %d\n", (signed)(us_to - now));\r
	}\r
/*\r
	while ((signed int)(us_to - now) > 512) {\r
		spend_cycles(1024);\r
		now = plat_get_ticks_us();\r
	}\r
*/\r
}\r
\r
const char *plat_get_credits(void)\r
{\r
	return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"\r
		"Credits:\n"\r
		"fDave: Cyclone 68000 core,\n"\r
		"      base code of PicoDrive\n"\r
		"Reesy & FluBBa: DrZ80 core\n"\r
		"MAME devs: YM2612 and SN76496 cores\n"\r
		"rlyeh and others: minimal SDK\n"\r
		"Squidge: mmuhack\n"\r
		"Dzz: ARM940 sample\n"\r
		"GnoStiC / Puck2099: USB joy code\n"\r
		"craigix: GP2X hardware\n"\r
		"ketchupgun: skin design\n"\r
		"\n"\r
		"special thanks (for docs, ideas):\n"\r
		" Charles MacDonald, Haze,\n"\r
		" Stephane Dallongeville,\n"\r
		" Lordus, Exophase, Rokas,\n"\r
		" Nemesis, Tasco Deluxe";\r
}\r
Commit	Line	Data
f2cf8472	1	// (c) Copyright 2006-2009 notaz, All rights reserved.\r
e55f0cbb	2	// Free for non-commercial use.\r
	3	\r
	4	// For commercial use, separate licencing terms must be obtained.\r
	5	\r
	6	#include <stdio.h>\r
d08e7326	7	#include <unistd.h>\r
e55f0cbb	8	\r
e55f0cbb	9	#include "../common/emu.h"\r
74f5e726	10	#include "../common/menu.h"\r
697746df	11	#include "../common/plat.h"\r
697746df	12	#include "../common/arm_utils.h"\r
e5ab6faf	13	#include "../linux/sndout_oss.h"\r
d08e7326	14	#include "../linux/fbdev.h"\r
3bb7bd19	15	#include "asm_utils.h"\r
697746df	16	#include "version.h"\r
e55f0cbb	17	\r
efcba75f	18	#include <pico/pico_int.h>\r
e55f0cbb	19	\r
d08e7326	20	//#define USE_320_SCREEN 1\r
e55f0cbb	21	\r
e55f0cbb	22	\r
e55f0cbb	23	static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
697746df	24	static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r
697746df	25	unsigned char *PicoDraw2FB = temp_frame;\r
fcdefcf6	26	const char *renderer_names[] = { NULL };\r
fcdefcf6	27	const char *renderer_names32x[] = { NULL };\r
697746df	28	char cpu_clk_name[] = "unused";\r
e55f0cbb	29	\r
e55f0cbb	30	\r
f2cf8472	31	void pemu_prep_defconfig(void)\r
e55f0cbb	32	{\r
697746df	33	// XXX: move elsewhere\r
697746df	34	g_menubg_ptr = temp_frame;\r
d08e7326	35	\r
d08e7326	36	defaultConfig.EmuOpt \|= EOPT_VSYNC;\r
e55f0cbb	37	}\r
e55f0cbb	38	\r
697746df	39	void pemu_validate_config(void)\r
e55f0cbb	40	{\r
e55f0cbb	41	}\r
e55f0cbb	42	\r
697746df	43	// FIXME: cleanup\r
bcd94522	44	static void osd_text(int x, int y, const char *text)\r
e55f0cbb	45	{\r
	46	int len = strlen(text)*8;\r
	47	\r
5a681086	48	if (0) {\r
e55f0cbb	49	int *p, i, h;\r
	50	x &= ~3; // align x\r
	51	len = (len+3) >> 2;\r
	52	for (h = 0; h < 8; h++) {\r
74f5e726	53	p = (int ) ((unsigned char ) g_screen_ptr+x+g_screen_width*(y+h));\r
e55f0cbb	54	for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
e55f0cbb	55	}\r
cc41eb4f	56	emu_text_out8(x, y, text);\r
e55f0cbb	57	} else {\r
	58	int *p, i, h;\r
	59	x &= ~1; // align x\r
	60	len++;\r
	61	for (h = 0; h < 16; h++) {\r
74f5e726	62	p = (int ) ((unsigned short ) g_screen_ptr+x+g_screen_width*(y+h));\r
3bb7bd19	63	for (i = len; i; i--, p++) p = 0;//(p>>2)&0x39e7;\r
e55f0cbb	64	}\r
cc41eb4f	65	text_out16(x, y, text);\r
e55f0cbb	66	}\r
	67	}\r
	68	\r
	69	static void draw_cd_leds(void)\r
	70	{\r
	71	// static\r
	72	int old_reg;\r
	73	// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
	74	old_reg = Pico_mcd->s68k_regs[0];\r
	75	\r
5a681086	76	if (0) {\r
e55f0cbb	77	// 8-bit modes\r
	78	unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
	79	unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
74f5e726	80	(unsigned int )((char )g_screen_ptr + g_screen_width2+ 4) =\r
	81	(unsigned int )((char )g_screen_ptr + g_screen_width3+ 4) =\r
	82	(unsigned int )((char )g_screen_ptr + g_screen_width4+ 4) = col_g;\r
	83	(unsigned int )((char )g_screen_ptr + g_screen_width2+12) =\r
	84	(unsigned int )((char )g_screen_ptr + g_screen_width3+12) =\r
	85	(unsigned int )((char )g_screen_ptr + g_screen_width4+12) = col_r;\r
e55f0cbb	86	} else {\r
e55f0cbb	87	// 16-bit modes\r
74f5e726	88	unsigned int p = (unsigned int )((short )g_screen_ptr + g_screen_width2+4);\r
e55f0cbb	89	unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
e55f0cbb	90	unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
e2de9939	91	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r; p += g_screen_width/2 - 12/2;\r
e2de9939	92	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r; p += g_screen_width/2 - 12/2;\r
e55f0cbb	93	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r;\r
	94	}\r
	95	}\r
	96	\r
3bb7bd19	97	#ifdef USE_320_SCREEN\r
	98	\r
	99	static int EmuScanBegin16(unsigned int num)\r
	100	{\r
74f5e726	101	DrawLineDest = (unsigned short )g_screen_ptr + num800 + 800/2 - 320/2;\r
3bb7bd19	102	//int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
74f5e726	103	//DrawLineDest = (unsigned short )g_screen_ptr + numw;\r
3bb7bd19	104	\r
	105	return 0;\r
	106	}\r
	107	\r
	108	#else // USE_320_SCREEN\r
	109	\r
e55f0cbb	110	static int EmuScanEnd16(unsigned int num)\r
	111	{\r
	112	unsigned char *ps=HighCol+8;\r
	113	unsigned short *pd;\r
	114	unsigned short *pal=HighPal;\r
	115	int sh = Pico.video.reg[0xC]&8;\r
	116	int len, mask = 0xff;\r
	117	\r
74f5e726	118	pd=(unsigned short )g_screen_ptr + num8002 + 800/2 - 3202/2;\r
e55f0cbb	119	\r
	120	if (Pico.m.dirtyPal)\r
	121	PicoDoHighPal555(sh);\r
	122	\r
	123	if (Pico.video.reg[12]&1) {\r
	124	len = 320;\r
	125	} else {\r
3bb7bd19	126	pd += 32*2;\r
e55f0cbb	127	len = 256;\r
	128	}\r
	129	\r
efcba75f	130	if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
efcba75f	131	mask=0x3f; // messed sprites, upper bits are priority stuff\r
e55f0cbb	132	\r
3bb7bd19	133	#if 1\r
	134	clut_line(pd, ps, pal, (mask<<16) \| len);\r
	135	#else\r
e55f0cbb	136	for (; len > 0; len--)\r
	137	{\r
	138	unsigned int p = pal[*ps++ & mask];\r
	139	p \|= p << 16;\r
	140	(unsigned int )pd = p;\r
	141	(unsigned int )(&pd[800]) = p;\r
	142	pd += 2;\r
	143	}\r
3bb7bd19	144	#endif\r
e55f0cbb	145	\r
	146	return 0;\r
	147	}\r
	148	\r
d08e7326	149	static int EmuScanEnd16_32x(unsigned int num)\r
	150	{\r
	151	unsigned int *ps;\r
	152	unsigned int *pd;\r
	153	int len;\r
	154	\r
	155	ps = (unsigned int *)temp_frame;\r
	156	pd = (unsigned int )g_screen_ptr + (num8002 + 800/2 - 3202/2) / 2;\r
	157	\r
	158	for (len = 320/2; len > 0; len--, ps++) {\r
	159	unsigned int p, p1;\r
	160	p1 = *ps;\r
	161	p = p1 << 16;\r
	162	p \|= p >> 16;\r
	163	*pd = pd[800/2] = p;\r
	164	pd++;\r
	165	\r
	166	p = p1 >> 16;\r
	167	p \|= p << 16;\r
	168	*pd = pd[800/2] = p;\r
	169	pd++;\r
	170	}\r
	171	\r
	172	return 0;\r
	173	}\r
3bb7bd19	174	#endif // USE_320_SCREEN\r
3bb7bd19	175	\r
d08e7326	176	void pemu_finalize_frame(const char fps, const char notice)\r
e55f0cbb	177	{\r
697746df	178	if (notice \|\| (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r
697746df	179	if (notice)\r
d08e7326	180	osd_text(4, 464, notice);\r
697746df	181	if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
d08e7326	182	osd_text(640, 464, fps);\r
e55f0cbb	183	}\r
697746df	184	if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
e55f0cbb	185	draw_cd_leds();\r
697746df	186	}\r
e55f0cbb	187	\r
5a681086	188	void plat_video_toggle_renderer(int change, int is_menu)\r
697746df	189	{\r
697746df	190	// this will auto-select SMS/32X renderers\r
5a681086	191	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
e55f0cbb	192	}\r
e55f0cbb	193	\r
697746df	194	void plat_video_menu_enter(int is_rom_loaded)\r
	195	{\r
	196	}\r
e55f0cbb	197	\r
697746df	198	void plat_video_menu_begin(void)\r
e55f0cbb	199	{\r
697746df	200	memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r
e55f0cbb	201	}\r
e55f0cbb	202	\r
697746df	203	void plat_video_menu_end(void)\r
697746df	204	{\r
d08e7326	205	plat_video_flip();\r
697746df	206	}\r
e55f0cbb	207	\r
697746df	208	void plat_status_msg_clear(void)\r
e55f0cbb	209	{\r
d08e7326	210	int s = g_screen_width * g_screen_height * 2;\r
	211	int l = g_screen_width * 16 * 2;\r
	212	int i;\r
	213	\r
	214	for (i = 0; i < fbdev_buffer_count; i++)\r
	215	memset32((int )((char )fbdev_buffers[i] + s - l), 0, l / 4);\r
e55f0cbb	216	}\r
e55f0cbb	217	\r
697746df	218	void plat_status_msg_busy_next(const char *msg)\r
	219	{\r
	220	plat_status_msg_clear();\r
d08e7326	221	pemu_finalize_frame("", msg);\r
d08e7326	222	plat_video_flip();\r
697746df	223	emu_status_msg("");\r
	224	reset_timing = 1;\r
	225	}\r
e55f0cbb	226	\r
697746df	227	void plat_status_msg_busy_first(const char *msg)\r
	228	{\r
	229	// memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
	230	plat_status_msg_busy_next(msg);\r
	231	}\r
	232	\r
	233	void plat_update_volume(int has_changed, int is_up)\r
e55f0cbb	234	{\r
	235	static int prev_frame = 0, wait_frames = 0;\r
	236	int vol = currentConfig.volume;\r
	237	\r
	238	if (has_changed)\r
	239	{\r
697746df	240	if (is_up) {\r
	241	if (vol < 99) vol++;\r
	242	} else {\r
	243	if (vol > 0) vol--;\r
e55f0cbb	244	}\r
697746df	245	wait_frames = 0;\r
	246	sndout_oss_setvol(vol, vol);\r
	247	currentConfig.volume = vol;\r
	248	emu_status_msg("VOL: %02i", vol);\r
e55f0cbb	249	prev_frame = Pico.m.frame_count;\r
e55f0cbb	250	}\r
e55f0cbb	251	}\r
e55f0cbb	252	\r
f2cf8472	253	void pemu_forced_frame(int opts)\r
e55f0cbb	254	{\r
e55f0cbb	255	int po_old = PicoOpt;\r
e55f0cbb	256	\r
	257	PicoOpt &= ~0x10;\r
	258	PicoOpt \|= opts\|POPT_ACC_SPRITES; // acc_sprites\r
e55f0cbb	259	\r
e55f0cbb	260	Pico.m.dirtyPal = 1;\r
	261	PicoFrameDrawOnly();\r
	262	\r
e55f0cbb	263	PicoOpt = po_old;\r
e55f0cbb	264	}\r
e55f0cbb	265	\r
697746df	266	static void updateSound(int len)\r
e55f0cbb	267	{\r
d08e7326	268	unsigned int t;\r
d08e7326	269	\r
697746df	270	len <<= 1;\r
	271	if (PicoOpt & POPT_EN_STEREO)\r
	272	len <<= 1;\r
e55f0cbb	273	\r
d08e7326	274	// sndout_oss_can_write() not reliable..\r
697746df	275	if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r
697746df	276	return;\r
e55f0cbb	277	\r
697746df	278	/* avoid writing audio when lagging behind to prevent audio lag */\r
d08e7326	279	if (PicoSkipFrame == 2)\r
	280	return;\r
	281	\r
	282	t = plat_get_ticks_ms();\r
	283	sndout_oss_write(PsndOut, len);\r
	284	t = plat_get_ticks_ms() - t;\r
	285	if (t > 1)\r
	286	printf("audio lag %u\n", t);\r
e55f0cbb	287	}\r
e55f0cbb	288	\r
f2cf8472	289	void pemu_sound_start(void)\r
b6820926	290	{\r
b6820926	291	int target_fps = Pico.m.pal ? 50 : 60;\r
	292	\r
	293	PsndOut = NULL;\r
	294	\r
d08e7326	295	if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
b6820926	296	{\r
d08e7326	297	int snd_excess_add, frame_samples;\r
	298	int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
	299	\r
	300	PsndRerate(Pico.m.frame_count ? 1 : 0);\r
	301	\r
	302	frame_samples = PsndLen;\r
	303	snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r
	304	if (snd_excess_add != 0)\r
	305	frame_samples++;\r
b6820926	306	\r
b6820926	307	printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
d08e7326	308	PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r
	309	sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r
	310	//sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
b6820926	311	PicoWriteSound = updateSound;\r
697746df	312	plat_update_volume(0, 0);\r
b6820926	313	memset(sndBuffer, 0, sizeof(sndBuffer));\r
b6820926	314	PsndOut = sndBuffer;\r
b6820926	315	}\r
	316	}\r
	317	\r
f2cf8472	318	void pemu_sound_stop(void)\r
b6820926	319	{\r
d08e7326	320	sndout_oss_stop();\r
b6820926	321	}\r
b6820926	322	\r
f2cf8472	323	void pemu_sound_wait(void)\r
b6820926	324	{\r
	325	// don't need to do anything, writes will block by themselves\r
	326	}\r
e55f0cbb	327	\r
697746df	328	void plat_debug_cat(char *str)\r
e55f0cbb	329	{\r
697746df	330	}\r
e55f0cbb	331	\r
697746df	332	void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r
697746df	333	{\r
d08e7326	334	int i;\r
e55f0cbb	335	\r
697746df	336	// clear whole screen in all buffers\r
d08e7326	337	for (i = 0; i < fbdev_buffer_count; i++)\r
d08e7326	338	memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r
e55f0cbb	339	\r
697746df	340	#ifdef USE_320_SCREEN\r
5a681086	341	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
697746df	342	PicoScanBegin = EmuScanBegin16;\r
e55f0cbb	343	#else\r
d08e7326	344	if (PicoAHW & PAHW_32X) {\r
d08e7326	345	DrawLineDest = (unsigned short *)temp_frame;\r
5a681086	346	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
d08e7326	347	PicoScanBegin = NULL;\r
	348	PicoScanEnd = EmuScanEnd16_32x;\r
	349	} else {\r
5a681086	350	PicoDrawSetOutFormat(PDF_NONE, 0);\r
d08e7326	351	PicoScanBegin = NULL;\r
	352	PicoScanEnd = EmuScanEnd16;\r
	353	}\r
e55f0cbb	354	#endif\r
d08e7326	355	}\r
e55f0cbb	356	\r
d08e7326	357	void pemu_loop_prep(void)\r
	358	{\r
	359	emu_video_mode_change(0, 0, 0);\r
697746df	360	pemu_sound_start();\r
697746df	361	}\r
e55f0cbb	362	\r
697746df	363	void pemu_loop_end(void)\r
	364	{\r
	365	int po_old = PicoOpt;\r
	366	int eo_old = currentConfig.EmuOpt;\r
e55f0cbb	367	\r
697746df	368	pemu_sound_stop();\r
697746df	369	memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
e55f0cbb	370	\r
697746df	371	/* do one more frame for menu bg */\r
	372	PicoOpt &= ~POPT_ALT_RENDERER;\r
	373	PicoOpt \|= POPT_EN_SOFTSCALE\|POPT_ACC_SPRITES;\r
	374	currentConfig.EmuOpt \|= EOPT_16BPP;\r
e55f0cbb	375	\r
5a681086	376	PicoDrawSetOutFormat(PDF_RGB555, 1);\r
697746df	377	Pico.m.dirtyPal = 1;\r
697746df	378	PicoFrame();\r
e55f0cbb	379	\r
697746df	380	PicoOpt = po_old;\r
	381	currentConfig.EmuOpt = eo_old;\r
	382	}\r
e55f0cbb	383	\r
697746df	384	void plat_wait_till_us(unsigned int us_to)\r
	385	{\r
	386	unsigned int now;\r
d08e7326	387	signed int diff;\r
e55f0cbb	388	\r
697746df	389	now = plat_get_ticks_us();\r
e55f0cbb	390	\r
d08e7326	391	// XXX: need to check NOHZ and djw kernel\r
	392	diff = (signed int)(us_to - now);\r
	393	if (diff > 10000) {\r
	394	//printf("sleep %d\n", us_to - now);\r
	395	usleep(diff * 15 / 16);\r
	396	now = plat_get_ticks_us();\r
	397	//printf(" wake %d\n", (signed)(us_to - now));\r
	398	}\r
	399	/*\r
	400	while ((signed int)(us_to - now) > 512) {\r
697746df	401	spend_cycles(1024);\r
697746df	402	now = plat_get_ticks_us();\r
e55f0cbb	403	}\r
d08e7326	404	*/\r
e55f0cbb	405	}\r
e55f0cbb	406	\r
697746df	407	const char *plat_get_credits(void)\r
697746df	408	{\r
fcdefcf6	409	return "PicoDrive v" VERSION " (c) notaz, 2006-2010\n\n\n"\r
697746df	410	"Credits:\n"\r
	411	"fDave: Cyclone 68000 core,\n"\r
	412	" base code of PicoDrive\n"\r
	413	"Reesy & FluBBa: DrZ80 core\n"\r
	414	"MAME devs: YM2612 and SN76496 cores\n"\r
	415	"rlyeh and others: minimal SDK\n"\r
	416	"Squidge: mmuhack\n"\r
	417	"Dzz: ARM940 sample\n"\r
	418	"GnoStiC / Puck2099: USB joy code\n"\r
	419	"craigix: GP2X hardware\n"\r
	420	"ketchupgun: skin design\n"\r
	421	"\n"\r
	422	"special thanks (for docs, ideas):\n"\r
	423	" Charles MacDonald, Haze,\n"\r
	424	" Stephane Dallongeville,\n"\r
	425	" Lordus, Exophase, Rokas,\n"\r
	426	" Nemesis, Tasco Deluxe";\r
	427	}\r