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

#include <windows.h>
#include <string.h>

#include <sys/stat.h>  // mkdir
#include <sys/types.h>

#include "kgsdk/Framework.h"
#include "kgsdk/Framework2D.h"
#include "kgsdk/FrameworkAudio.h"
#include "../common/emu.h"
#include "../common/lprintf.h"
#include "../common/arm_utils.h"
#include "emu.h"
#include "menu.h"
#include "giz.h"
#include "asm_utils.h"

#include <Pico/PicoInt.h>

#ifdef BENCHMARK
#define OSD_FPS_X 220
#else
#define OSD_FPS_X 260
#endif

// main 300K gfx-related buffer. Used by menu and renderers.
unsigned char gfx_buffer[321*240*2*2];
char romFileName[MAX_PATH];
int engineState;

unsigned char *PicoDraw2FB = gfx_buffer;  // temporary buffer for alt renderer ( (8+320)*(8+240+8) )
int reset_timing = 0;

static DWORD noticeMsgTime = 0;


static void blit(const char *fps, const char *notice);
static void clearArea(int full);

void emu_noticeMsgUpdated(void)
{
	noticeMsgTime = GetTickCount();
}

void emu_getMainDir(char *dst, int len)
{
	if (len > 0) *dst = 0;
}

static void emu_msg_cb(const char *msg)
{
	if (giz_screen == NULL)
		giz_screen = Framework2D_LockBuffer();

	memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
	emu_textOut16(4, 232, msg);
	noticeMsgTime = GetTickCount() - 2000;

	/* assumption: emu_msg_cb gets called only when something slow is about to happen */
	reset_timing = 1;
}

static void emu_state_cb(const char *str)
{
	if (giz_screen == NULL)
		giz_screen = Framework2D_LockBuffer();

	clearArea(0);
	blit("", str);

	Framework2D_UnlockBuffer();
	giz_screen = NULL;
}

static void emu_msg_tray_open(void)
{
	strcpy(noticeMsg, "CD tray opened");
	noticeMsgTime = GetTickCount();
}


void emu_Init(void)
{
	// make dirs for saves, cfgs, etc.
	mkdir("mds", 0777);
	mkdir("srm", 0777);
	mkdir("brm", 0777);
	mkdir("cfg", 0777);

	PicoInit();
	PicoMessage = emu_msg_cb;
	PicoMCDopenTray = emu_msg_tray_open;
	PicoMCDcloseTray = menu_loop_tray;
}

void emu_Deinit(void)
{
	// save SRAM
	if((currentConfig.EmuOpt & 1) && SRam.changed) {
		emu_SaveLoadGame(0, 1);
		SRam.changed = 0;
	}

	if (!(currentConfig.EmuOpt & 0x20)) {
		FILE *f = fopen(PicoConfigFile, "r+b");
		if (!f) emu_WriteConfig(0);
		else {
			// if we already have config, reload it, except last ROM
			fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
			fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
			fseek(f, 0, SEEK_SET);
			fwrite(&currentConfig, 1, sizeof(currentConfig), f);
			fflush(f);
			fclose(f);
		}
	}

	PicoExit();
}

void emu_setDefaultConfig(void)
{
	memset(&currentConfig, 0, sizeof(currentConfig));
	currentConfig.lastRomFile[0] = 0;
	currentConfig.EmuOpt  = 0x1f | 0x680; // | confirm_save, cd_leds, 16bit rend
	currentConfig.PicoOpt = 0x0f | 0xc00; // | cd_pcm, cd_cdda
	currentConfig.PsndRate = 22050;
	currentConfig.PicoRegion = 0; // auto
	currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
	currentConfig.Frameskip = 0;//-1; // auto
	currentConfig.volume = 50;
	currentConfig.KeyBinds[ 2] = 1<<0; // SACB RLDU
	currentConfig.KeyBinds[ 3] = 1<<1;
	currentConfig.KeyBinds[ 0] = 1<<2;
	currentConfig.KeyBinds[ 1] = 1<<3;
	currentConfig.KeyBinds[ 5] = 1<<4;
	currentConfig.KeyBinds[ 6] = 1<<5;
	currentConfig.KeyBinds[ 7] = 1<<6;
	currentConfig.KeyBinds[ 4] = 1<<7;
	currentConfig.KeyBinds[13] = 1<<26; // switch rend
	currentConfig.KeyBinds[ 8] = 1<<27; // save state
	currentConfig.KeyBinds[ 9] = 1<<28; // load state
	currentConfig.KeyBinds[12] = 1<<29; // vol up
	currentConfig.KeyBinds[11] = 1<<30; // vol down
	currentConfig.PicoCDBuffers = 64;
	currentConfig.scaling = 0;
}


static int EmuScan16(unsigned int num, void *sdata)
{
	if (!(Pico.video.reg[1]&8)) num += 8;
	DrawLineDest = (unsigned short *) giz_screen + 321*(num+1);

	return 0;
}

static int EmuScan8(unsigned int num, void *sdata)
{
	// draw like the fast renderer
	if (!(Pico.video.reg[1]&8)) num += 8;
	HighCol = gfx_buffer + 328*(num+1);

	return 0;
}

static void osd_text(int x, int y, const char *text)
{
	int len = strlen(text) * 8 / 2;
	int *p, h;
	for (h = 0; h < 8; h++) {
		p = (int *) ((unsigned short *) giz_screen+x+321*(y+h));
		p = (int *) ((int)p & ~3); // align
		memset32(p, 0, len);
	}
	emu_textOut16(x, y, text);
}

/*
void log1(void *p1, void *p2)
{
	lprintf("%p %p %p\n", p1, p2, DrawLineDest);
}
*/

static void cd_leds(void)
{
	static int old_reg = 0;
	unsigned int col_g, col_r, *p;

	if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
	old_reg = Pico_mcd->s68k_regs[0];

	p = (unsigned int *)((short *)giz_screen + 321*2+4+2);
	col_g = (old_reg & 2) ? 0x06000600 : 0;
	col_r = (old_reg & 1) ? 0xc000c000 : 0;
	*p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 321/2 - 12/2 + 1;
	*p++ = col_g; p+=3; *p++ = col_r; p += 321/2 - 10/2;
	*p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
}


static short localPal[0x100];

static void blit(const char *fps, const char *notice)
{
	int emu_opt = currentConfig.EmuOpt;

	if (PicoOpt&0x10)
	{
		int lines_flags = 224;
		// 8bit fast renderer
		if (Pico.m.dirtyPal) {
			Pico.m.dirtyPal = 0;
			vidConvCpyRGB565(localPal, Pico.cram, 0x40);
		}
		if (!(Pico.video.reg[12]&1)) lines_flags|=0x100;
		vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
	}
	else if (!(emu_opt&0x80))
	{
		int lines_flags;
		// 8bit accurate renderer
		if (Pico.m.dirtyPal) {
			Pico.m.dirtyPal = 0;
			vidConvCpyRGB565(localPal, Pico.cram, 0x40);
			if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
				//vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
				//vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO?
				blockcpy(localPal+0xc0, localPal+0x40, 0x40*2);
				localPal[0xc0] = 0x0600;
				localPal[0xd0] = 0xc000;
				localPal[0xe0] = 0x0000; // reserved pixels for OSD
				localPal[0xf0] = 0xffff;
			}
			/* no support
			else if (rendstatus & 0x20) { // mid-frame palette changes
				vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
				vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
			} */
		}
		lines_flags = (Pico.video.reg[1]&8) ? 240 : 224;
		if (!(Pico.video.reg[12]&1)) lines_flags|=0x100;
		vidCpy8to16((unsigned short *)giz_screen+321*8, PicoDraw2FB+328*8, localPal, lines_flags);
	}

	if (notice || (emu_opt & 2)) {
		int h = 232;
		if (notice)      osd_text(4, h, notice);
		if (emu_opt & 2) osd_text(OSD_FPS_X, h, fps);
	}

	if ((emu_opt & 0x400) && (PicoMCD & 1))
		cd_leds();
}

// clears whole screen or just the notice area (in all buffers)
static void clearArea(int full)
{
	if (giz_screen == NULL)
		giz_screen = Framework2D_LockBuffer();
	if (full) memset32(giz_screen, 0, 320*240*2/4);
	else      memset32((int *)((char *)giz_screen + 321*232*2), 0, 321*8*2/4);
}

static void vidResetMode(void)
{
	giz_screen = Framework2D_LockBuffer();

	if (PicoOpt&0x10) {
	} else if (currentConfig.EmuOpt&0x80) {
		PicoDrawSetColorFormat(1);
		PicoScan = EmuScan16;
	} else {
		PicoDrawSetColorFormat(-1);
		PicoScan = EmuScan8;
	}
	if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) {
		// setup pal for 8-bit modes
		localPal[0xc0] = 0x0600;
		localPal[0xd0] = 0xc000;
		localPal[0xe0] = 0x0000; // reserved pixels for OSD
		localPal[0xf0] = 0xffff;
	}
	Pico.m.dirtyPal = 1;

	memset32(giz_screen, 0, 321*240*2/4);
	Framework2D_UnlockBuffer();
	giz_screen = NULL;
}


static void SkipFrame(int do_audio)
{
	PicoSkipFrame=do_audio ? 1 : 2;
	PicoFrame();
	PicoSkipFrame=0;
}

void emu_forcedFrame(void)
{
	// TODO
}

static void RunEvents(unsigned int which)
{
	if (which & 0x1800) { // save or load (but not both)
		int do_it = 1;
		if ( emu_checkSaveFile(state_slot) &&
				(( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load
				 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save
			int keys;
			blit("", (which & 0x1000) ? "LOAD STATE? (PLAY=yes, STOP=no)" : "OVERWRITE SAVE? (PLAY=yes, STOP=no)");
			while( !((keys = Framework_PollGetButtons()) & (BTN_PLAY|BTN_STOP)) )
				Sleep(50);
			if (keys & BTN_STOP) do_it = 0;
			clearArea(0);
		}
		if (do_it) {
			osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");
			PicoStateProgressCB = emu_state_cb;
			emu_SaveLoadGame((which & 0x1000) >> 12, 0);
			PicoStateProgressCB = NULL;
		}

		reset_timing = 1;
	}
	if (which & 0x0400) { // switch renderer
		if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
		else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;
		else   currentConfig.EmuOpt &= ~0x80;

		vidResetMode();

		if (PicoOpt&0x10) {
			strcpy(noticeMsg, " 8bit fast renderer");
		} else if (currentConfig.EmuOpt&0x80) {
			strcpy(noticeMsg, "16bit accurate renderer");
		} else {
			strcpy(noticeMsg, " 8bit accurate renderer");
		}

		noticeMsgTime = GetTickCount();
	}
	if (which & 0x0300) {
		if(which&0x0200) {
			state_slot -= 1;
			if(state_slot < 0) state_slot = 9;
		} else {
			state_slot += 1;
			if(state_slot > 9) state_slot = 0;
		}
		sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
		noticeMsgTime = GetTickCount();
	}
}

static void updateKeys(void)
{
	unsigned int keys, allActions[2] = { 0, 0 }, events;
	static unsigned int prevEvents = 0;
	int i;

	keys = Framework_PollGetButtons();
	if (keys & BTN_HOME) {
		engineState = PGS_Menu;
		// wait until select is released, so menu would not resume game
		while (Framework_PollGetButtons() & BTN_HOME) Sleep(50);
	}

	keys &= CONFIGURABLE_KEYS;

	for (i = 0; i < 32; i++)
	{
		if (keys & (1 << i)) {
			int pl, acts = currentConfig.KeyBinds[i];
			if (!acts) continue;
			pl = (acts >> 16) & 1;
			/* TODO if (combo_keys & (1 << i)) {
				int u = i+1, acts_c = acts & combo_acts;
				// let's try to find the other one
				if (acts_c)
					for (; u < 32; u++)
						if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
							allActions[pl] |= acts_c;
							keys &= ~((1 << i) | (1 << u));
							break;
						}
				// add non-combo actions if combo ones were not found
				if (!acts_c || u == 32)
					allActions[pl] |= acts & ~combo_acts;
			} else */ {
				allActions[pl] |= acts;
			}
		}
	}

	PicoPad[0] = (unsigned short) allActions[0];
	PicoPad[1] = (unsigned short) allActions[1];

	events = (allActions[0] | allActions[1]) >> 16;

	// volume is treated in special way and triggered every frame
	if (events & 0x6000) {
		int vol = currentConfig.volume;
		if (events & 0x2000) {
			if (vol < 100) vol++;
		} else {
			if (vol >   0) vol--;
		}
		//gp2x_sound_volume(vol, vol);
		sprintf(noticeMsg, "VOL: %02i", vol);
		noticeMsgTime = GetTickCount();
		currentConfig.volume = vol;
	}

	events &= ~prevEvents;
	if (events) RunEvents(events);
	if (movie_data) emu_updateMovie();

	prevEvents = (allActions[0] | allActions[1]) >> 16;
}

static void simpleWait(DWORD until)
{
	DWORD tval;
	int diff;

	tval = GetTickCount();
	diff = (int)until - (int)tval;
	if (diff >= 2)
		Sleep(diff - 1);

	while ((tval = GetTickCount()) < until && until - tval < 512) // some simple overflow detection
		spend_cycles(1024*2);
}

void emu_Loop(void)
{
	//static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;
	char fpsbuff[24]; // fps count c string
	DWORD tval, tval_prev = 0, tval_thissec = 0; // timing
	int frames_done = 0, frames_shown = 0, oldmodes = 0;
	int target_fps, target_frametime, lim_time, tval_diff, i;
	char *notice = NULL;

	lprintf("entered emu_Loop()\n");

	fpsbuff[0] = 0;

	// make sure we are in correct mode
	vidResetMode();
	if (currentConfig.scaling) PicoOpt|=0x4000;
	else PicoOpt&=~0x4000;
	Pico.m.dirtyPal = 1;
	oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
	//find_combos(); // TODO

	// pal/ntsc might have changed, reset related stuff
	target_fps = Pico.m.pal ? 50 : 60;
	target_frametime = (1000<<8)/target_fps;
	reset_timing = 1;

	// prepare sound stuff
/*	if (currentConfig.EmuOpt & 4) {
		int snd_excess_add;
		if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
			sound_rerate(Pico.m.frame_count ? 1 : 0);
		}
		snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
		lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
			PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
		gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);
		gp2x_sound_volume(currentConfig.volume, currentConfig.volume);
		PicoWriteSound = updateSound;
		memset(sndBuffer, 0, sizeof(sndBuffer));
		PsndOut = sndBuffer;
		PsndRate_old = PsndRate;
		PsndLen_real = PsndLen;
		PicoOpt_old  = PicoOpt;
		pal_old = Pico.m.pal;
	} else*/ {
		PsndOut = 0;
	}

	// prepare CD buffer
	if (PicoMCD & 1) PicoCDBufferInit();

	// loop?
	while (engineState == PGS_Running)
	{
		int modes;

		tval = GetTickCount();
		if (reset_timing || tval < tval_prev) {
			reset_timing = 0;
			tval_thissec = tval;
			frames_shown = frames_done = 0;
		}

		// show notice message?
		if (noticeMsgTime) {
			static int noticeMsgSum;
			if (tval - noticeMsgTime > 2000) { // > 2.0 sec
				noticeMsgTime = 0;
				clearArea(0);
				notice = 0;
			} else {
				int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
				if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
				notice = noticeMsg;
			}
		}

		// check for mode changes
		modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
		if (modes != oldmodes) {
			oldmodes = modes;
			clearArea(1);
		}

		// second passed?
		if (tval - tval_thissec >= 1000)
		{
#ifdef BENCHMARK
			static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
			if(++bench == 10) {
				bench = 0;
				bench_fps_s = bench_fps;
				bf[bfp++ & 3] = bench_fps;
				bench_fps = 0;
			}
			bench_fps += frames_shown;
			sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
#else
			if(currentConfig.EmuOpt & 2)
				sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
#endif
			tval_thissec = tval;

			if (PsndOut == 0 && currentConfig.Frameskip >= 0) {
				frames_done = frames_shown = 0;
			} else {
				// it is quite common for this implementation to leave 1 fame unfinished
				// when second changes, but we don't want buffer to starve.
				if (PsndOut && frames_done < target_fps && frames_done > target_fps-5) {
					updateKeys();
					SkipFrame(1); frames_done++;
				}

				frames_done  -= target_fps; if (frames_done  < 0) frames_done  = 0;
				frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
				if (frames_shown > frames_done) frames_shown = frames_done;
			}
		}
#ifdef PFRAMES
		sprintf(fpsbuff, "%i", Pico.m.frame_count);
#endif

		tval_prev = tval;
		lim_time = (frames_done+1) * target_frametime;
		if (currentConfig.Frameskip >= 0) // frameskip enabled
		{
			for (i = 0; i < currentConfig.Frameskip; i++) {
				updateKeys();
				SkipFrame(1); frames_done++;
				if (PsndOut) { // do framelimitting if sound is enabled
					int tval_diff;
					tval = GetTickCount();
					tval_diff = (int)(tval - tval_thissec) << 8;
					if (tval_diff < lim_time) // we are too fast
						simpleWait(tval + ((lim_time - tval_diff)>>8));
				}
				lim_time += target_frametime;
			}
		}
		else // auto frameskip
		{
			int tval_diff;
			tval = GetTickCount();
			tval_diff = (int)(tval - tval_thissec) << 8;
			if (tval_diff > lim_time)
			{
				// no time left for this frame - skip
				if (tval_diff - lim_time >= (300<<8)) {
					/* something caused a slowdown for us (disk access? cache flush?)
					 * try to recover by resetting timing... */
					reset_timing = 1;
					continue;
				}
				updateKeys();
				SkipFrame(tval_diff < lim_time+target_frametime*2); frames_done++;
				continue;
			}
		}

		updateKeys();

		if (giz_screen == NULL && (currentConfig.EmuOpt&0x80))
			giz_screen = Framework2D_LockBuffer();
		if (!(PicoOpt&0x10))
			PicoScan((unsigned) -1, NULL);

		PicoFrame();

		if (giz_screen == NULL)
			giz_screen = Framework2D_LockBuffer();

		blit(fpsbuff, notice);

		if (giz_screen != NULL) {
			Framework2D_UnlockBuffer();
			giz_screen = NULL;
		}

		// check time
		tval = GetTickCount();
		tval_diff = (int)(tval - tval_thissec) << 8;

		if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300<<8)) // slowdown detection
			reset_timing = 1;
		else if (PsndOut != NULL || currentConfig.Frameskip < 0)
		{
			// sleep if we are still too fast
			if (tval_diff < lim_time)
			{
				// we are too fast
				simpleWait(tval + ((lim_time - tval_diff) >> 8));
			}
		}

		frames_done++; frames_shown++;
	}


	if (PicoMCD & 1) PicoCDBufferFree();

	// save SRAM
	if ((currentConfig.EmuOpt & 1) && SRam.changed) {
		emu_state_cb("Writing SRAM/BRAM..");
		emu_SaveLoadGame(0, 1);
		SRam.changed = 0;
	}
}


void emu_ResetGame(void)
{
	PicoReset(0);
	reset_timing = 1;
}
Commit	Line	Data
e5f426aa	1	#include <windows.h>
ea8c405f	2	#include <string.h>
e5f426aa	3
2ec14aec	4	#include <sys/stat.h> // mkdir
	5	#include <sys/types.h>
	6
	7	#include "kgsdk/Framework.h"
ea8c405f	8	#include "kgsdk/Framework2D.h"
	9	#include "kgsdk/FrameworkAudio.h"
	10	#include "../common/emu.h"
	11	#include "../common/lprintf.h"
	12	#include "../common/arm_utils.h"
e5f426aa	13	#include "emu.h"
ea8c405f	14	#include "menu.h"
	15	#include "giz.h"
	16	#include "asm_utils.h"
e5f426aa	17
ea8c405f	18	#include <Pico/PicoInt.h>
	19
	20	#ifdef BENCHMARK
	21	#define OSD_FPS_X 220
	22	#else
	23	#define OSD_FPS_X 260
	24	#endif
	25
	26	// main 300K gfx-related buffer. Used by menu and renderers.
	27	unsigned char gfx_buffer[3212402*2];
e5f426aa	28	char romFileName[MAX_PATH];
e5f426aa	29	int engineState;
e5f426aa	30
ea8c405f	31	unsigned char PicoDraw2FB = gfx_buffer; // temporary buffer for alt renderer ( (8+320)(8+240+8) )
e5f426aa	32	int reset_timing = 0;
ea8c405f	33
ea8c405f	34	static DWORD noticeMsgTime = 0;
ea8c405f	35
	36
	37	static void blit(const char fps, const char notice);
	38	static void clearArea(int full);
	39
	40	void emu_noticeMsgUpdated(void)
	41	{
	42	noticeMsgTime = GetTickCount();
	43	}
	44
	45	void emu_getMainDir(char *dst, int len)
	46	{
	47	if (len > 0) *dst = 0;
	48	}
	49
	50	static void emu_msg_cb(const char *msg)
	51	{
	52	if (giz_screen == NULL)
	53	giz_screen = Framework2D_LockBuffer();
	54
	55	memset32((int )((char )giz_screen + 3212322), 0, 32182/4);
	56	emu_textOut16(4, 232, msg);
	57	noticeMsgTime = GetTickCount() - 2000;
	58
	59	/* assumption: emu_msg_cb gets called only when something slow is about to happen */
	60	reset_timing = 1;
	61	}
	62
	63	static void emu_state_cb(const char *str)
	64	{
9839d126	65	if (giz_screen == NULL)
	66	giz_screen = Framework2D_LockBuffer();
	67
ea8c405f	68	clearArea(0);
ea8c405f	69	blit("", str);
9839d126	70
	71	Framework2D_UnlockBuffer();
	72	giz_screen = NULL;
ea8c405f	73	}
	74
	75	static void emu_msg_tray_open(void)
	76	{
	77	strcpy(noticeMsg, "CD tray opened");
	78	noticeMsgTime = GetTickCount();
	79	}
	80
	81
	82	void emu_Init(void)
	83	{
	84	// make dirs for saves, cfgs, etc.
2ec14aec	85	mkdir("mds", 0777);
	86	mkdir("srm", 0777);
	87	mkdir("brm", 0777);
	88	mkdir("cfg", 0777);
ea8c405f	89
	90	PicoInit();
	91	PicoMessage = emu_msg_cb;
	92	PicoMCDopenTray = emu_msg_tray_open;
	93	PicoMCDcloseTray = menu_loop_tray;
	94	}
	95
	96	void emu_Deinit(void)
	97	{
	98	// save SRAM
	99	if((currentConfig.EmuOpt & 1) && SRam.changed) {
	100	emu_SaveLoadGame(0, 1);
	101	SRam.changed = 0;
	102	}
	103
	104	if (!(currentConfig.EmuOpt & 0x20)) {
	105	FILE *f = fopen(PicoConfigFile, "r+b");
	106	if (!f) emu_WriteConfig(0);
	107	else {
	108	// if we already have config, reload it, except last ROM
	109	fseek(f, sizeof(currentConfig.lastRomFile), SEEK_SET);
	110	fread(&currentConfig.EmuOpt, 1, sizeof(currentConfig) - sizeof(currentConfig.lastRomFile), f);
	111	fseek(f, 0, SEEK_SET);
	112	fwrite(&currentConfig, 1, sizeof(currentConfig), f);
	113	fflush(f);
	114	fclose(f);
	115	}
	116	}
	117
	118	PicoExit();
	119	}
	120
	121	void emu_setDefaultConfig(void)
	122	{
	123	memset(&currentConfig, 0, sizeof(currentConfig));
	124	currentConfig.lastRomFile[0] = 0;
9839d126	125	currentConfig.EmuOpt = 0x1f \| 0x680; // \| confirm_save, cd_leds, 16bit rend
ea8c405f	126	currentConfig.PicoOpt = 0x0f \| 0xc00; // \| cd_pcm, cd_cdda
	127	currentConfig.PsndRate = 22050;
	128	currentConfig.PicoRegion = 0; // auto
	129	currentConfig.PicoAutoRgnOrder = 0x184; // US, EU, JP
fd34fdd0	130	currentConfig.Frameskip = 0;//-1; // auto
ea8c405f	131	currentConfig.volume = 50;
	132	currentConfig.KeyBinds[ 2] = 1<<0; // SACB RLDU
	133	currentConfig.KeyBinds[ 3] = 1<<1;
	134	currentConfig.KeyBinds[ 0] = 1<<2;
	135	currentConfig.KeyBinds[ 1] = 1<<3;
	136	currentConfig.KeyBinds[ 5] = 1<<4;
	137	currentConfig.KeyBinds[ 6] = 1<<5;
	138	currentConfig.KeyBinds[ 7] = 1<<6;
2ec14aec	139	currentConfig.KeyBinds[ 4] = 1<<7;
9839d126	140	currentConfig.KeyBinds[13] = 1<<26; // switch rend
ea8c405f	141	currentConfig.KeyBinds[ 8] = 1<<27; // save state
	142	currentConfig.KeyBinds[ 9] = 1<<28; // load state
	143	currentConfig.KeyBinds[12] = 1<<29; // vol up
	144	currentConfig.KeyBinds[11] = 1<<30; // vol down
	145	currentConfig.PicoCDBuffers = 64;
	146	currentConfig.scaling = 0;
	147	}
	148
	149
	150	static int EmuScan16(unsigned int num, void *sdata)
	151	{
	152	if (!(Pico.video.reg[1]&8)) num += 8;
	153	DrawLineDest = (unsigned short ) giz_screen + 321(num+1);
	154
	155	return 0;
	156	}
	157
	158	static int EmuScan8(unsigned int num, void *sdata)
	159	{
	160	// draw like the fast renderer
	161	if (!(Pico.video.reg[1]&8)) num += 8;
2ec14aec	162	HighCol = gfx_buffer + 328*(num+1);
ea8c405f	163
	164	return 0;
	165	}
	166
	167	static void osd_text(int x, int y, const char *text)
	168	{
499a0be3	169	int len = strlen(text) * 8 / 2;
499a0be3	170	int *p, h;
ea8c405f	171	for (h = 0; h < 8; h++) {
	172	p = (int ) ((unsigned short ) giz_screen+x+321*(y+h));
	173	p = (int *) ((int)p & ~3); // align
499a0be3	174	memset32(p, 0, len);
ea8c405f	175	}
	176	emu_textOut16(x, y, text);
	177	}
	178
499a0be3	179	/*
	180	void log1(void p1, void p2)
	181	{
	182	lprintf("%p %p %p\n", p1, p2, DrawLineDest);
	183	}
	184	*/
ea8c405f	185
9839d126	186	static void cd_leds(void)
	187	{
	188	static int old_reg = 0;
	189	unsigned int col_g, col_r, *p;
	190
	191	if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change
	192	old_reg = Pico_mcd->s68k_regs[0];
	193
	194	p = (unsigned int )((short )giz_screen + 321*2+4+2);
	195	col_g = (old_reg & 2) ? 0x06000600 : 0;
	196	col_r = (old_reg & 1) ? 0xc000c000 : 0;
	197	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r; p += 321/2 - 12/2 + 1;
	198	p++ = col_g; p+=3; p++ = col_r; p += 321/2 - 10/2;
	199	p++ = col_g; p++ = col_g; p+=2; p++ = col_r; p++ = col_r;
	200	}
	201
	202
	203	static short localPal[0x100];
ea8c405f	204
	205	static void blit(const char fps, const char notice)
	206	{
	207	int emu_opt = currentConfig.EmuOpt;
	208
9839d126	209	if (PicoOpt&0x10)
	210	{
	211	int lines_flags = 224;
ea8c405f	212	// 8bit fast renderer
	213	if (Pico.m.dirtyPal) {
	214	Pico.m.dirtyPal = 0;
	215	vidConvCpyRGB565(localPal, Pico.cram, 0x40);
	216	}
9839d126	217	if (!(Pico.video.reg[12]&1)) lines_flags\|=0x100;
	218	vidCpy8to16((unsigned short )giz_screen+3218, PicoDraw2FB+328*8, localPal, lines_flags);
	219	}
	220	else if (!(emu_opt&0x80))
	221	{
	222	int lines_flags;
ea8c405f	223	// 8bit accurate renderer
	224	if (Pico.m.dirtyPal) {
	225	Pico.m.dirtyPal = 0;
	226	vidConvCpyRGB565(localPal, Pico.cram, 0x40);
2ec14aec	227	if (Pico.video.reg[0xC]&8) { // shadow/hilight mode
ea8c405f	228	//vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);
9839d126	229	//vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40); // TODO?
2ec14aec	230	blockcpy(localPal+0xc0, localPal+0x40, 0x40*2);
ea8c405f	231	localPal[0xc0] = 0x0600;
	232	localPal[0xd0] = 0xc000;
	233	localPal[0xe0] = 0x0000; // reserved pixels for OSD
	234	localPal[0xf0] = 0xffff;
	235	}
	236	/* no support
	237	else if (rendstatus & 0x20) { // mid-frame palette changes
	238	vidConvCpyRGB565(localPal+0x40, HighPal, 0x40);
	239	vidConvCpyRGB565(localPal+0x80, HighPal+0x40, 0x40);
	240	} */
	241	}
9839d126	242	lines_flags = (Pico.video.reg[1]&8) ? 240 : 224;
	243	if (!(Pico.video.reg[12]&1)) lines_flags\|=0x100;
	244	vidCpy8to16((unsigned short )giz_screen+3218, PicoDraw2FB+328*8, localPal, lines_flags);
ea8c405f	245	}
	246
	247	if (notice \|\| (emu_opt & 2)) {
	248	int h = 232;
	249	if (notice) osd_text(4, h, notice);
9839d126	250	if (emu_opt & 2) osd_text(OSD_FPS_X, h, fps);
ea8c405f	251	}
ea8c405f	252
9839d126	253	if ((emu_opt & 0x400) && (PicoMCD & 1))
9839d126	254	cd_leds();
ea8c405f	255	}
	256
	257	// clears whole screen or just the notice area (in all buffers)
	258	static void clearArea(int full)
	259	{
	260	if (giz_screen == NULL)
	261	giz_screen = Framework2D_LockBuffer();
	262	if (full) memset32(giz_screen, 0, 3202402/4);
499a0be3	263	else memset32((int )((char )giz_screen + 3212322), 0, 32182/4);
ea8c405f	264	}
	265
	266	static void vidResetMode(void)
	267	{
499a0be3	268	giz_screen = Framework2D_LockBuffer();
499a0be3	269
ea8c405f	270	if (PicoOpt&0x10) {
	271	} else if (currentConfig.EmuOpt&0x80) {
	272	PicoDrawSetColorFormat(1);
	273	PicoScan = EmuScan16;
	274	} else {
499a0be3	275	PicoDrawSetColorFormat(-1);
ea8c405f	276	PicoScan = EmuScan8;
ea8c405f	277	}
499a0be3	278	if ((PicoOpt&0x10) \|\| !(currentConfig.EmuOpt&0x80)) {
ea8c405f	279	// setup pal for 8-bit modes
	280	localPal[0xc0] = 0x0600;
	281	localPal[0xd0] = 0xc000;
	282	localPal[0xe0] = 0x0000; // reserved pixels for OSD
	283	localPal[0xf0] = 0xffff;
	284	}
	285	Pico.m.dirtyPal = 1;
499a0be3	286
499a0be3	287	memset32(giz_screen, 0, 3212402/4);
ea8c405f	288	Framework2D_UnlockBuffer();
	289	giz_screen = NULL;
	290	}
	291
	292
	293	static void SkipFrame(int do_audio)
	294	{
	295	PicoSkipFrame=do_audio ? 1 : 2;
	296	PicoFrame();
	297	PicoSkipFrame=0;
	298	}
	299
	300	void emu_forcedFrame(void)
	301	{
	302	// TODO
	303	}
	304
9839d126	305	static void RunEvents(unsigned int which)
	306	{
	307	if (which & 0x1800) { // save or load (but not both)
	308	int do_it = 1;
	309	if ( emu_checkSaveFile(state_slot) &&
	310	(( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) \|\| // load
	311	(!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save
	312	int keys;
	313	blit("", (which & 0x1000) ? "LOAD STATE? (PLAY=yes, STOP=no)" : "OVERWRITE SAVE? (PLAY=yes, STOP=no)");
	314	while( !((keys = Framework_PollGetButtons()) & (BTN_PLAY\|BTN_STOP)) )
	315	Sleep(50);
	316	if (keys & BTN_STOP) do_it = 0;
	317	clearArea(0);
	318	}
	319	if (do_it) {
	320	osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");
	321	PicoStateProgressCB = emu_state_cb;
	322	emu_SaveLoadGame((which & 0x1000) >> 12, 0);
	323	PicoStateProgressCB = NULL;
	324	}
	325
	326	reset_timing = 1;
	327	}
	328	if (which & 0x0400) { // switch renderer
	329	if ( PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt \|= 0x80; }
	330	else if (!(currentConfig.EmuOpt&0x80)) PicoOpt\|= 0x10;
	331	else currentConfig.EmuOpt &= ~0x80;
	332
	333	vidResetMode();
	334
	335	if (PicoOpt&0x10) {
	336	strcpy(noticeMsg, " 8bit fast renderer");
	337	} else if (currentConfig.EmuOpt&0x80) {
	338	strcpy(noticeMsg, "16bit accurate renderer");
	339	} else {
	340	strcpy(noticeMsg, " 8bit accurate renderer");
	341	}
	342
	343	noticeMsgTime = GetTickCount();
	344	}
	345	if (which & 0x0300) {
	346	if(which&0x0200) {
	347	state_slot -= 1;
	348	if(state_slot < 0) state_slot = 9;
	349	} else {
	350	state_slot += 1;
	351	if(state_slot > 9) state_slot = 0;
	352	}
	353	sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
	354	noticeMsgTime = GetTickCount();
	355	}
	356	}
	357
ea8c405f	358	static void updateKeys(void)
ea8c405f	359	{
2ec14aec	360	unsigned int keys, allActions[2] = { 0, 0 }, events;
	361	static unsigned int prevEvents = 0;
	362	int i;
	363
	364	keys = Framework_PollGetButtons();
	365	if (keys & BTN_HOME) {
	366	engineState = PGS_Menu;
	367	// wait until select is released, so menu would not resume game
	368	while (Framework_PollGetButtons() & BTN_HOME) Sleep(50);
	369	}
	370
	371	keys &= CONFIGURABLE_KEYS;
	372
	373	for (i = 0; i < 32; i++)
	374	{
	375	if (keys & (1 << i)) {
	376	int pl, acts = currentConfig.KeyBinds[i];
	377	if (!acts) continue;
	378	pl = (acts >> 16) & 1;
	379	/* TODO if (combo_keys & (1 << i)) {
	380	int u = i+1, acts_c = acts & combo_acts;
	381	// let's try to find the other one
	382	if (acts_c)
	383	for (; u < 32; u++)
	384	if ( (currentConfig.KeyBinds[u] & acts_c) && (keys & (1 << u)) ) {
	385	allActions[pl] \|= acts_c;
	386	keys &= ~((1 << i) \| (1 << u));
	387	break;
	388	}
	389	// add non-combo actions if combo ones were not found
	390	if (!acts_c \|\| u == 32)
	391	allActions[pl] \|= acts & ~combo_acts;
	392	} else */ {
	393	allActions[pl] \|= acts;
	394	}
	395	}
	396	}
	397
	398	PicoPad[0] = (unsigned short) allActions[0];
	399	PicoPad[1] = (unsigned short) allActions[1];
	400
	401	events = (allActions[0] \| allActions[1]) >> 16;
	402
	403	// volume is treated in special way and triggered every frame
	404	if (events & 0x6000) {
	405	int vol = currentConfig.volume;
	406	if (events & 0x2000) {
	407	if (vol < 100) vol++;
	408	} else {
	409	if (vol > 0) vol--;
	410	}
	411	//gp2x_sound_volume(vol, vol);
	412	sprintf(noticeMsg, "VOL: %02i", vol);
	413	noticeMsgTime = GetTickCount();
	414	currentConfig.volume = vol;
	415	}
	416
	417	events &= ~prevEvents;
9839d126	418	if (events) RunEvents(events);
2ec14aec	419	if (movie_data) emu_updateMovie();
	420
	421	prevEvents = (allActions[0] \| allActions[1]) >> 16;
ea8c405f	422	}
	423
	424	static void simpleWait(DWORD until)
	425	{
9839d126	426	DWORD tval;
	427	int diff;
	428
	429	tval = GetTickCount();
	430	diff = (int)until - (int)tval;
	431	if (diff >= 2)
	432	Sleep(diff - 1);
	433
	434	while ((tval = GetTickCount()) < until && until - tval < 512) // some simple overflow detection
	435	spend_cycles(1024*2);
ea8c405f	436	}
	437
	438	void emu_Loop(void)
	439	{
	440	//static int PsndRate_old = 0, PicoOpt_old = 0, PsndLen_real = 0, pal_old = 0;
	441	char fpsbuff[24]; // fps count c string
	442	DWORD tval, tval_prev = 0, tval_thissec = 0; // timing
	443	int frames_done = 0, frames_shown = 0, oldmodes = 0;
	444	int target_fps, target_frametime, lim_time, tval_diff, i;
	445	char *notice = NULL;
	446
	447	lprintf("entered emu_Loop()\n");
	448
	449	fpsbuff[0] = 0;
	450
	451	// make sure we are in correct mode
	452	vidResetMode();
	453	if (currentConfig.scaling) PicoOpt\|=0x4000;
	454	else PicoOpt&=~0x4000;
	455	Pico.m.dirtyPal = 1;
	456	oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
	457	//find_combos(); // TODO
	458
	459	// pal/ntsc might have changed, reset related stuff
	460	target_fps = Pico.m.pal ? 50 : 60;
	461	target_frametime = (1000<<8)/target_fps;
	462	reset_timing = 1;
	463
	464	// prepare sound stuff
	465	/* if (currentConfig.EmuOpt & 4) {
	466	int snd_excess_add;
	467	if (PsndRate != PsndRate_old \|\| (PicoOpt&0x0b) != (PicoOpt_old&0x0b) \|\| Pico.m.pal != pal_old) {
	468	sound_rerate(Pico.m.frame_count ? 1 : 0);
	469	}
	470	snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;
	471	lprintf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",
	472	PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);
	473	gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);
	474	gp2x_sound_volume(currentConfig.volume, currentConfig.volume);
	475	PicoWriteSound = updateSound;
	476	memset(sndBuffer, 0, sizeof(sndBuffer));
	477	PsndOut = sndBuffer;
	478	PsndRate_old = PsndRate;
	479	PsndLen_real = PsndLen;
	480	PicoOpt_old = PicoOpt;
	481	pal_old = Pico.m.pal;
	482	} else*/ {
	483	PsndOut = 0;
	484	}
	485
	486	// prepare CD buffer
	487	if (PicoMCD & 1) PicoCDBufferInit();
	488
	489	// loop?
	490	while (engineState == PGS_Running)
	491	{
	492	int modes;
	493
	494	tval = GetTickCount();
	495	if (reset_timing \|\| tval < tval_prev) {
	496	reset_timing = 0;
	497	tval_thissec = tval;
	498	frames_shown = frames_done = 0;
	499	}
500
501	// show notice message?
502	if (noticeMsgTime) {
503	static int noticeMsgSum;
504	if (tval - noticeMsgTime > 2000) { // > 2.0 sec
505	noticeMsgTime = 0;
506	clearArea(0);
507	notice = 0;
508	} else {
509	int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
510	if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
511	notice = noticeMsg;
512	}
513	}
514
515	// check for mode changes
516	modes = ((Pico.video.reg[12]&1)<<2)\|(Pico.video.reg[1]&8);
517	if (modes != oldmodes) {
ea8c405f	518	oldmodes = modes;
	519	clearArea(1);
	520	}
	521
	522	// second passed?
	523	if (tval - tval_thissec >= 1000)
	524	{
	525	#ifdef BENCHMARK
	526	static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];
	527	if(++bench == 10) {
	528	bench = 0;
	529	bench_fps_s = bench_fps;
	530	bf[bfp++ & 3] = bench_fps;
	531	bench_fps = 0;
	532	}
	533	bench_fps += frames_shown;
	534	sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);
	535	#else
	536	if(currentConfig.EmuOpt & 2)
	537	sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);
	538	#endif
	539	tval_thissec = tval;
	540
	541	if (PsndOut == 0 && currentConfig.Frameskip >= 0) {
	542	frames_done = frames_shown = 0;
	543	} else {
	544	// it is quite common for this implementation to leave 1 fame unfinished
	545	// when second changes, but we don't want buffer to starve.
	546	if (PsndOut && frames_done < target_fps && frames_done > target_fps-5) {
	547	updateKeys();
	548	SkipFrame(1); frames_done++;
	549	}
	550
	551	frames_done -= target_fps; if (frames_done < 0) frames_done = 0;
	552	frames_shown -= target_fps; if (frames_shown < 0) frames_shown = 0;
	553	if (frames_shown > frames_done) frames_shown = frames_done;
	554	}
	555	}
	556	#ifdef PFRAMES
	557	sprintf(fpsbuff, "%i", Pico.m.frame_count);
	558	#endif
	559
	560	tval_prev = tval;
	561	lim_time = (frames_done+1) * target_frametime;
	562	if (currentConfig.Frameskip >= 0) // frameskip enabled
	563	{
	564	for (i = 0; i < currentConfig.Frameskip; i++) {
	565	updateKeys();
	566	SkipFrame(1); frames_done++;
	567	if (PsndOut) { // do framelimitting if sound is enabled
	568	int tval_diff;
	569	tval = GetTickCount();
	570	tval_diff = (int)(tval - tval_thissec) << 8;
	571	if (tval_diff < lim_time) // we are too fast
	572	simpleWait(tval + ((lim_time - tval_diff)>>8));
	573	}
	574	lim_time += target_frametime;
	575	}
	576	}
	577	else // auto frameskip
	578	{
	579	int tval_diff;
	580	tval = GetTickCount();
	581	tval_diff = (int)(tval - tval_thissec) << 8;
582	if (tval_diff > lim_time)
583	{
584	// no time left for this frame - skip
585	if (tval_diff - lim_time >= (300<<8)) {
586	/* something caused a slowdown for us (disk access? cache flush?)
587	* try to recover by resetting timing... */
588	reset_timing = 1;
589	continue;
590	}
591	updateKeys();
592	SkipFrame(tval_diff < lim_time+target_frametime*2); frames_done++;
593	continue;
594	}
595	}
596
597	updateKeys();
598
499a0be3	599	if (giz_screen == NULL && (currentConfig.EmuOpt&0x80))
ea8c405f	600	giz_screen = Framework2D_LockBuffer();
499a0be3	601	if (!(PicoOpt&0x10))
499a0be3	602	PicoScan((unsigned) -1, NULL);
ea8c405f	603
ea8c405f	604	PicoFrame();
499a0be3	605
	606	if (giz_screen == NULL)
	607	giz_screen = Framework2D_LockBuffer();
	608
ea8c405f	609	blit(fpsbuff, notice);
	610
	611	if (giz_screen != NULL) {
	612	Framework2D_UnlockBuffer();
	613	giz_screen = NULL;
	614	}
	615
	616	// check time
	617	tval = GetTickCount();
	618	tval_diff = (int)(tval - tval_thissec) << 8;
	619
	620	if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300<<8)) // slowdown detection
	621	reset_timing = 1;
	622	else if (PsndOut != NULL \|\| currentConfig.Frameskip < 0)
	623	{
	624	// sleep if we are still too fast
	625	if (tval_diff < lim_time)
	626	{
	627	// we are too fast
	628	simpleWait(tval + ((lim_time - tval_diff) >> 8));
	629	}
	630	}
	631
	632	frames_done++; frames_shown++;
	633	}
	634
	635
	636	if (PicoMCD & 1) PicoCDBufferFree();
	637
	638	// save SRAM
	639	if ((currentConfig.EmuOpt & 1) && SRam.changed) {
	640	emu_state_cb("Writing SRAM/BRAM..");
	641	emu_SaveLoadGame(0, 1);
	642	SRam.changed = 0;
	643	}
	644	}
	645
	646
	647	void emu_ResetGame(void)
	648	{
	649	PicoReset(0);
	650	reset_timing = 1;
	651	}
e5f426aa	652