[libpicofe.git] / 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
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 ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\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 ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\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 is_next, int force_16bpp, int is_menu)\r
{\r
	// this will auto-select SMS/32X renderers\r
	PicoDrawSetColorFormat(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
	int eo_old = currentConfig.EmuOpt;\r
\r
	PicoOpt &= ~0x10;\r
	PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
	currentConfig.EmuOpt |= 0x80;\r
\r
	Pico.m.dirtyPal = 1;\r
	PicoFrameDrawOnly();\r
\r
	PicoOpt = po_old;\r
	currentConfig.EmuOpt = eo_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
	PicoDrawSetColorFormat(1);\r
	PicoScanBegin = EmuScanBegin16;\r
#else\r
	if (PicoAHW & PAHW_32X) {\r
		DrawLineDest = (unsigned short *)temp_frame;\r
		PicoDrawSetColorFormat(1);\r
		PicoScanBegin = NULL;\r
		PicoScanEnd = EmuScanEnd16_32x;\r
	} else {\r
		PicoDrawSetColorFormat(-1);\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
	PicoDrawSetColorFormat(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, 2006-2009\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
93c18cb4	1	// (c) Copyright 2006-2009 notaz, All rights reserved.\r
492d353a	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
b188c2b6	7	#include <unistd.h>\r
492d353a	8	\r
492d353a	9	#include "../common/emu.h"\r
7fd581f4	10	#include "../common/menu.h"\r
d2f29611	11	#include "../common/plat.h"\r
d2f29611	12	#include "../common/arm_utils.h"\r
b3972d82	13	#include "../linux/sndout_oss.h"\r
b188c2b6	14	#include "../linux/fbdev.h"\r
de9b1274	15	#include "asm_utils.h"\r
d2f29611	16	#include "version.h"\r
492d353a	17	\r
f11bad75	18	#include <pico/pico_int.h>\r
492d353a	19	\r
b188c2b6	20	//#define USE_320_SCREEN 1\r
492d353a	21	\r
492d353a	22	\r
492d353a	23	static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
d2f29611	24	static unsigned char temp_frame[g_screen_width * g_screen_height * 2];\r
d2f29611	25	unsigned char *PicoDraw2FB = temp_frame;\r
d2f29611	26	char cpu_clk_name[] = "unused";\r
492d353a	27	\r
492d353a	28	\r
93c18cb4	29	void pemu_prep_defconfig(void)\r
492d353a	30	{\r
d2f29611	31	// XXX: move elsewhere\r
d2f29611	32	g_menubg_ptr = temp_frame;\r
b188c2b6	33	\r
b188c2b6	34	defaultConfig.EmuOpt \|= EOPT_VSYNC;\r
492d353a	35	}\r
492d353a	36	\r
d2f29611	37	void pemu_validate_config(void)\r
492d353a	38	{\r
492d353a	39	}\r
492d353a	40	\r
d2f29611	41	// FIXME: cleanup\r
046c4540	42	static void osd_text(int x, int y, const char *text)\r
492d353a	43	{\r
	44	int len = strlen(text)*8;\r
	45	\r
	46	if ((PicoOpt&0x10)\|\|!(currentConfig.EmuOpt&0x80)) {\r
	47	int *p, i, h;\r
	48	x &= ~3; // align x\r
	49	len = (len+3) >> 2;\r
	50	for (h = 0; h < 8; h++) {\r
7fd581f4	51	p = (int ) ((unsigned char ) g_screen_ptr+x+g_screen_width*(y+h));\r
492d353a	52	for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
492d353a	53	}\r
b7911801	54	emu_text_out8(x, y, text);\r
492d353a	55	} else {\r
	56	int *p, i, h;\r
	57	x &= ~1; // align x\r
	58	len++;\r
	59	for (h = 0; h < 16; h++) {\r
7fd581f4	60	p = (int ) ((unsigned short ) g_screen_ptr+x+g_screen_width*(y+h));\r
de9b1274	61	for (i = len; i; i--, p++) p = 0;//(p>>2)&0x39e7;\r
492d353a	62	}\r
b7911801	63	text_out16(x, y, text);\r
492d353a	64	}\r
	65	}\r
	66	\r
	67	static void draw_cd_leds(void)\r
	68	{\r
	69	// static\r
	70	int old_reg;\r
	71	// if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
	72	old_reg = Pico_mcd->s68k_regs[0];\r
	73	\r
	74	if ((PicoOpt&0x10)\|\|!(currentConfig.EmuOpt&0x80)) {\r
	75	// 8-bit modes\r
	76	unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
	77	unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
7fd581f4	78	(unsigned int )((char )g_screen_ptr + g_screen_width2+ 4) =\r
	79	(unsigned int )((char )g_screen_ptr + g_screen_width3+ 4) =\r
	80	(unsigned int )((char )g_screen_ptr + g_screen_width4+ 4) = col_g;\r
	81	(unsigned int )((char )g_screen_ptr + g_screen_width2+12) =\r
	82	(unsigned int )((char )g_screen_ptr + g_screen_width3+12) =\r
	83	(unsigned int )((char )g_screen_ptr + g_screen_width4+12) = col_r;\r
492d353a	84	} else {\r
492d353a	85	// 16-bit modes\r
7fd581f4	86	unsigned int p = (unsigned int )((short )g_screen_ptr + g_screen_width2+4);\r
492d353a	87	unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
492d353a	88	unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
e31266dd	89	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r; p += g_screen_width/2 - 12/2;\r
e31266dd	90	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r; p += g_screen_width/2 - 12/2;\r
492d353a	91	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r;\r
	92	}\r
	93	}\r
	94	\r
de9b1274	95	#ifdef USE_320_SCREEN\r
	96	\r
	97	static int EmuScanBegin16(unsigned int num)\r
	98	{\r
7fd581f4	99	DrawLineDest = (unsigned short )g_screen_ptr + num800 + 800/2 - 320/2;\r
de9b1274	100	//int w = (Pico.video.reg[12]&1) ? 320 : 256;\r
7fd581f4	101	//DrawLineDest = (unsigned short )g_screen_ptr + numw;\r
de9b1274	102	\r
	103	return 0;\r
	104	}\r
	105	\r
	106	#else // USE_320_SCREEN\r
	107	\r
492d353a	108	static int EmuScanEnd16(unsigned int num)\r
	109	{\r
	110	unsigned char *ps=HighCol+8;\r
	111	unsigned short *pd;\r
	112	unsigned short *pal=HighPal;\r
	113	int sh = Pico.video.reg[0xC]&8;\r
	114	int len, mask = 0xff;\r
	115	\r
7fd581f4	116	pd=(unsigned short )g_screen_ptr + num8002 + 800/2 - 3202/2;\r
492d353a	117	\r
	118	if (Pico.m.dirtyPal)\r
	119	PicoDoHighPal555(sh);\r
	120	\r
	121	if (Pico.video.reg[12]&1) {\r
	122	len = 320;\r
	123	} else {\r
de9b1274	124	pd += 32*2;\r
492d353a	125	len = 256;\r
	126	}\r
	127	\r
f11bad75	128	if (!sh && (rendstatus & PDRAW_SPR_LO_ON_HI))\r
f11bad75	129	mask=0x3f; // messed sprites, upper bits are priority stuff\r
492d353a	130	\r
de9b1274	131	#if 1\r
	132	clut_line(pd, ps, pal, (mask<<16) \| len);\r
	133	#else\r
492d353a	134	for (; len > 0; len--)\r
	135	{\r
	136	unsigned int p = pal[*ps++ & mask];\r
	137	p \|= p << 16;\r
	138	(unsigned int )pd = p;\r
	139	(unsigned int )(&pd[800]) = p;\r
	140	pd += 2;\r
	141	}\r
de9b1274	142	#endif\r
492d353a	143	\r
	144	return 0;\r
	145	}\r
	146	\r
b188c2b6	147	static int EmuScanEnd16_32x(unsigned int num)\r
	148	{\r
	149	unsigned int *ps;\r
	150	unsigned int *pd;\r
	151	int len;\r
	152	\r
	153	ps = (unsigned int *)temp_frame;\r
	154	pd = (unsigned int )g_screen_ptr + (num8002 + 800/2 - 3202/2) / 2;\r
	155	\r
	156	for (len = 320/2; len > 0; len--, ps++) {\r
	157	unsigned int p, p1;\r
	158	p1 = *ps;\r
	159	p = p1 << 16;\r
	160	p \|= p >> 16;\r
	161	*pd = pd[800/2] = p;\r
	162	pd++;\r
	163	\r
	164	p = p1 >> 16;\r
	165	p \|= p << 16;\r
	166	*pd = pd[800/2] = p;\r
	167	pd++;\r
	168	}\r
	169	\r
	170	return 0;\r
	171	}\r
de9b1274	172	#endif // USE_320_SCREEN\r
de9b1274	173	\r
b188c2b6	174	void pemu_finalize_frame(const char fps, const char notice)\r
492d353a	175	{\r
d2f29611	176	if (notice \|\| (currentConfig.EmuOpt & EOPT_SHOW_FPS)) {\r
d2f29611	177	if (notice)\r
b188c2b6	178	osd_text(4, 464, notice);\r
d2f29611	179	if (currentConfig.EmuOpt & EOPT_SHOW_FPS)\r
b188c2b6	180	osd_text(640, 464, fps);\r
492d353a	181	}\r
d2f29611	182	if ((PicoAHW & PAHW_MCD) && (currentConfig.EmuOpt & EOPT_EN_CD_LEDS))\r
492d353a	183	draw_cd_leds();\r
d2f29611	184	}\r
492d353a	185	\r
d2f29611	186	void plat_video_toggle_renderer(int is_next, int force_16bpp, int is_menu)\r
	187	{\r
	188	// this will auto-select SMS/32X renderers\r
	189	PicoDrawSetColorFormat(1);\r
492d353a	190	}\r
492d353a	191	\r
d2f29611	192	void plat_video_menu_enter(int is_rom_loaded)\r
	193	{\r
	194	}\r
492d353a	195	\r
d2f29611	196	void plat_video_menu_begin(void)\r
492d353a	197	{\r
d2f29611	198	memcpy32(g_screen_ptr, g_menubg_ptr, g_screen_width * g_screen_height * 2 / 4);\r
492d353a	199	}\r
492d353a	200	\r
d2f29611	201	void plat_video_menu_end(void)\r
d2f29611	202	{\r
b188c2b6	203	plat_video_flip();\r
d2f29611	204	}\r
492d353a	205	\r
d2f29611	206	void plat_status_msg_clear(void)\r
492d353a	207	{\r
b188c2b6	208	int s = g_screen_width * g_screen_height * 2;\r
	209	int l = g_screen_width * 16 * 2;\r
	210	int i;\r
	211	\r
	212	for (i = 0; i < fbdev_buffer_count; i++)\r
	213	memset32((int )((char )fbdev_buffers[i] + s - l), 0, l / 4);\r
492d353a	214	}\r
492d353a	215	\r
d2f29611	216	void plat_status_msg_busy_next(const char *msg)\r
	217	{\r
	218	plat_status_msg_clear();\r
b188c2b6	219	pemu_finalize_frame("", msg);\r
b188c2b6	220	plat_video_flip();\r
d2f29611	221	emu_status_msg("");\r
	222	reset_timing = 1;\r
	223	}\r
492d353a	224	\r
d2f29611	225	void plat_status_msg_busy_first(const char *msg)\r
	226	{\r
	227	// memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
	228	plat_status_msg_busy_next(msg);\r
	229	}\r
	230	\r
	231	void plat_update_volume(int has_changed, int is_up)\r
492d353a	232	{\r
	233	static int prev_frame = 0, wait_frames = 0;\r
	234	int vol = currentConfig.volume;\r
	235	\r
	236	if (has_changed)\r
	237	{\r
d2f29611	238	if (is_up) {\r
	239	if (vol < 99) vol++;\r
	240	} else {\r
	241	if (vol > 0) vol--;\r
492d353a	242	}\r
d2f29611	243	wait_frames = 0;\r
	244	sndout_oss_setvol(vol, vol);\r
	245	currentConfig.volume = vol;\r
	246	emu_status_msg("VOL: %02i", vol);\r
492d353a	247	prev_frame = Pico.m.frame_count;\r
492d353a	248	}\r
492d353a	249	}\r
492d353a	250	\r
93c18cb4	251	void pemu_forced_frame(int opts)\r
492d353a	252	{\r
	253	int po_old = PicoOpt;\r
	254	int eo_old = currentConfig.EmuOpt;\r
	255	\r
	256	PicoOpt &= ~0x10;\r
	257	PicoOpt \|= opts\|POPT_ACC_SPRITES; // acc_sprites\r
	258	currentConfig.EmuOpt \|= 0x80;\r
	259	\r
492d353a	260	Pico.m.dirtyPal = 1;\r
	261	PicoFrameDrawOnly();\r
	262	\r
492d353a	263	PicoOpt = po_old;\r
	264	currentConfig.EmuOpt = eo_old;\r
	265	}\r
	266	\r
d2f29611	267	static void updateSound(int len)\r
492d353a	268	{\r
b188c2b6	269	unsigned int t;\r
b188c2b6	270	\r
d2f29611	271	len <<= 1;\r
	272	if (PicoOpt & POPT_EN_STEREO)\r
	273	len <<= 1;\r
492d353a	274	\r
b188c2b6	275	// sndout_oss_can_write() not reliable..\r
d2f29611	276	if ((currentConfig.EmuOpt & EOPT_NO_FRMLIMIT) && !sndout_oss_can_write(len))\r
d2f29611	277	return;\r
492d353a	278	\r
d2f29611	279	/* avoid writing audio when lagging behind to prevent audio lag */\r
b188c2b6	280	if (PicoSkipFrame == 2)\r
	281	return;\r
	282	\r
	283	t = plat_get_ticks_ms();\r
	284	sndout_oss_write(PsndOut, len);\r
	285	t = plat_get_ticks_ms() - t;\r
	286	if (t > 1)\r
	287	printf("audio lag %u\n", t);\r
492d353a	288	}\r
492d353a	289	\r
93c18cb4	290	void pemu_sound_start(void)\r
fce20e73	291	{\r
fce20e73	292	int target_fps = Pico.m.pal ? 50 : 60;\r
	293	\r
	294	PsndOut = NULL;\r
	295	\r
b188c2b6	296	if (currentConfig.EmuOpt & EOPT_EN_SOUND)\r
fce20e73	297	{\r
b188c2b6	298	int snd_excess_add, frame_samples;\r
	299	int is_stereo = (PicoOpt & POPT_EN_STEREO) ? 1 : 0;\r
	300	\r
	301	PsndRerate(Pico.m.frame_count ? 1 : 0);\r
	302	\r
	303	frame_samples = PsndLen;\r
	304	snd_excess_add = ((PsndRate - PsndLen * target_fps)<<16) / target_fps;\r
	305	if (snd_excess_add != 0)\r
	306	frame_samples++;\r
fce20e73	307	\r
fce20e73	308	printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
b188c2b6	309	PsndRate, PsndLen, snd_excess_add, is_stereo, Pico.m.pal);\r
	310	sndout_oss_start(PsndRate, frame_samples * 2, is_stereo);\r
	311	//sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
fce20e73	312	PicoWriteSound = updateSound;\r
d2f29611	313	plat_update_volume(0, 0);\r
fce20e73	314	memset(sndBuffer, 0, sizeof(sndBuffer));\r
fce20e73	315	PsndOut = sndBuffer;\r
fce20e73	316	}\r
	317	}\r
	318	\r
93c18cb4	319	void pemu_sound_stop(void)\r
fce20e73	320	{\r
b188c2b6	321	sndout_oss_stop();\r
fce20e73	322	}\r
fce20e73	323	\r
93c18cb4	324	void pemu_sound_wait(void)\r
fce20e73	325	{\r
	326	// don't need to do anything, writes will block by themselves\r
	327	}\r
492d353a	328	\r
d2f29611	329	void plat_debug_cat(char *str)\r
492d353a	330	{\r
d2f29611	331	}\r
492d353a	332	\r
d2f29611	333	void emu_video_mode_change(int start_line, int line_count, int is_32cols)\r
d2f29611	334	{\r
b188c2b6	335	int i;\r
492d353a	336	\r
d2f29611	337	// clear whole screen in all buffers\r
b188c2b6	338	for (i = 0; i < fbdev_buffer_count; i++)\r
b188c2b6	339	memset32(fbdev_buffers[i], 0, g_screen_width * g_screen_height * 2 / 4);\r
492d353a	340	\r
d2f29611	341	#ifdef USE_320_SCREEN\r
	342	PicoDrawSetColorFormat(1);\r
	343	PicoScanBegin = EmuScanBegin16;\r
492d353a	344	#else\r
b188c2b6	345	if (PicoAHW & PAHW_32X) {\r
	346	DrawLineDest = (unsigned short *)temp_frame;\r
	347	PicoDrawSetColorFormat(1);\r
	348	PicoScanBegin = NULL;\r
	349	PicoScanEnd = EmuScanEnd16_32x;\r
	350	} else {\r
	351	PicoDrawSetColorFormat(-1);\r
	352	PicoScanBegin = NULL;\r
	353	PicoScanEnd = EmuScanEnd16;\r
	354	}\r
492d353a	355	#endif\r
b188c2b6	356	}\r
492d353a	357	\r
b188c2b6	358	void pemu_loop_prep(void)\r
	359	{\r
	360	emu_video_mode_change(0, 0, 0);\r
d2f29611	361	pemu_sound_start();\r
d2f29611	362	}\r
492d353a	363	\r
d2f29611	364	void pemu_loop_end(void)\r
	365	{\r
	366	int po_old = PicoOpt;\r
	367	int eo_old = currentConfig.EmuOpt;\r
492d353a	368	\r
d2f29611	369	pemu_sound_stop();\r
d2f29611	370	memset32(g_screen_ptr, 0, g_screen_width * g_screen_height * 2 / 4);\r
492d353a	371	\r
d2f29611	372	/* do one more frame for menu bg */\r
	373	PicoOpt &= ~POPT_ALT_RENDERER;\r
	374	PicoOpt \|= POPT_EN_SOFTSCALE\|POPT_ACC_SPRITES;\r
	375	currentConfig.EmuOpt \|= EOPT_16BPP;\r
492d353a	376	\r
d2f29611	377	PicoDrawSetColorFormat(1);\r
	378	Pico.m.dirtyPal = 1;\r
	379	PicoFrame();\r
492d353a	380	\r
d2f29611	381	PicoOpt = po_old;\r
	382	currentConfig.EmuOpt = eo_old;\r
	383	}\r
492d353a	384	\r
d2f29611	385	void plat_wait_till_us(unsigned int us_to)\r
	386	{\r
	387	unsigned int now;\r
b188c2b6	388	signed int diff;\r
492d353a	389	\r
d2f29611	390	now = plat_get_ticks_us();\r
492d353a	391	\r
b188c2b6	392	// XXX: need to check NOHZ and djw kernel\r
	393	diff = (signed int)(us_to - now);\r
	394	if (diff > 10000) {\r
	395	//printf("sleep %d\n", us_to - now);\r
	396	usleep(diff * 15 / 16);\r
	397	now = plat_get_ticks_us();\r
	398	//printf(" wake %d\n", (signed)(us_to - now));\r
	399	}\r
	400	/*\r
	401	while ((signed int)(us_to - now) > 512) {\r
d2f29611	402	spend_cycles(1024);\r
d2f29611	403	now = plat_get_ticks_us();\r
492d353a	404	}\r
b188c2b6	405	*/\r
492d353a	406	}\r
492d353a	407	\r
d2f29611	408	const char *plat_get_credits(void)\r
	409	{\r
	410	return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"\r
	411	"Credits:\n"\r
	412	"fDave: Cyclone 68000 core,\n"\r
	413	" base code of PicoDrive\n"\r
	414	"Reesy & FluBBa: DrZ80 core\n"\r
	415	"MAME devs: YM2612 and SN76496 cores\n"\r
	416	"rlyeh and others: minimal SDK\n"\r
	417	"Squidge: mmuhack\n"\r
	418	"Dzz: ARM940 sample\n"\r
	419	"GnoStiC / Puck2099: USB joy code\n"\r
	420	"craigix: GP2X hardware\n"\r
	421	"ketchupgun: skin design\n"\r
	422	"\n"\r
	423	"special thanks (for docs, ideas):\n"\r
	424	" Charles MacDonald, Haze,\n"\r
	425	" Stephane Dallongeville,\n"\r
	426	" Lordus, Exophase, Rokas,\n"\r
	427	" Nemesis, Tasco Deluxe";\r
	428	}\r