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1// (c) Copyright 2007 notaz, All rights reserved.
2// Free for non-commercial use.
3
4// For commercial use, separate licencing terms must be obtained.
5
6#include <sys/stat.h>
7#include <sys/types.h>
8#include <sys/syslimits.h> // PATH_MAX
9
10#include <pspthreadman.h>
11#include <pspdisplay.h>
12#include <psputils.h>
13#include <pspgu.h>
14#include <pspaudio.h>
15
16#include "psp.h"
17#include "menu.h"
18#include "emu.h"
19#include "mp3.h"
20#include "asm_utils.h"
21#include "../common/emu.h"
22#include "../common/config.h"
23#include "../common/lprintf.h"
24#include "../../Pico/PicoInt.h"
25#include "../../Pico/cd/cue.h"
26
27#define OSD_FPS_X 432
28
29// additional pspaudio imports, credits to crazyc
30int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown); // play with conversion?
31int sceAudio_5C37C0AE(void); // end play?
32int sceAudio_E0727056(int volume, void *buffer); // blocking output
33int sceAudioOutput2GetRestSample();
34
35
36char romFileName[PATH_MAX];
37unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
38int engineState = PGS_Menu, engineStateSuspend;
39
40static unsigned int noticeMsgTime = 0;
41int reset_timing = 0; // do we need this?
42
43#define PICO_PEN_ADJUST_X 4
44#define PICO_PEN_ADJUST_Y 2
45static int pico_pen_x = 320/2, pico_pen_y = 240/2;
46
47static void sound_init(void);
48static void sound_deinit(void);
49static void blit2(const char *fps, const char *notice, int lagging_behind);
50static void clearArea(int full);
51
52void emu_noticeMsgUpdated(void)
53{
54 noticeMsgTime = sceKernelGetSystemTimeLow();
55}
56
57void emu_getMainDir(char *dst, int len)
58{
59 if (len > 0) *dst = 0;
60}
61
62static void osd_text(int x, const char *text, int is_active, int clear_all)
63{
64 unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
65 int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
66 int *p, h;
67 void *tmp;
68 for (h = 0; h < 8; h++) {
69 p = (int *) (screen+x+512*(264+h));
70 p = (int *) ((int)p & ~3); // align
71 memset32_uncached(p, 0, len);
72 }
73 if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
74 emu_textOut16(x, 264, text);
75 if (is_active) psp_screen = tmp;
76}
77
78void emu_msg_cb(const char *msg)
79{
80 osd_text(4, msg, 1, 1);
81 noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
82
83 /* assumption: emu_msg_cb gets called only when something slow is about to happen */
84 reset_timing = 1;
85}
86
87static void emu_msg_tray_open(void)
88{
89 strcpy(noticeMsg, "CD tray opened");
90 noticeMsgTime = sceKernelGetSystemTimeLow();
91}
92
93
94void emu_Init(void)
95{
96 // make dirs for saves, cfgs, etc.
97 mkdir("mds", 0777);
98 mkdir("srm", 0777);
99 mkdir("brm", 0777);
100 mkdir("cfg", 0777);
101
102 sound_init();
103
104 PicoInit();
105 PicoMessage = emu_msg_cb;
106 PicoMCDopenTray = emu_msg_tray_open;
107 PicoMCDcloseTray = menu_loop_tray;
108}
109
110void emu_Deinit(void)
111{
112 // save SRAM
113 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
114 emu_SaveLoadGame(0, 1);
115 SRam.changed = 0;
116 }
117
118 if (!(currentConfig.EmuOpt & 0x20))
119 config_writelrom(PicoConfigFile);
120
121 PicoExit();
122 sound_deinit();
123}
124
125void emu_prepareDefaultConfig(void)
126{
127 memset(&defaultConfig, 0, sizeof(defaultConfig));
128 defaultConfig.EmuOpt = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
129 defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX|POPT_ACC_SPRITES;
130 defaultConfig.s_PsndRate = 22050;
131 defaultConfig.s_PicoRegion = 0; // auto
132 defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
133 defaultConfig.s_PicoCDBuffers = 64;
134 defaultConfig.Frameskip = -1; // auto
135 defaultConfig.CPUclock = 333;
136 defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
137 defaultConfig.KeyBinds[ 6] = 1<<1;
138 defaultConfig.KeyBinds[ 7] = 1<<2;
139 defaultConfig.KeyBinds[ 5] = 1<<3;
140 defaultConfig.KeyBinds[14] = 1<<4;
141 defaultConfig.KeyBinds[13] = 1<<5;
142 defaultConfig.KeyBinds[15] = 1<<6;
143 defaultConfig.KeyBinds[ 3] = 1<<7;
144 defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
145 defaultConfig.KeyBinds[ 8] = 1<<27; // save state
146 defaultConfig.KeyBinds[ 9] = 1<<28; // load state
147 defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
148 defaultConfig.KeyBinds[30] = 1<<1;
149 defaultConfig.KeyBinds[31] = 1<<2;
150 defaultConfig.KeyBinds[29] = 1<<3;
151 defaultConfig.scaling = 1; // bilinear filtering for psp
152 defaultConfig.scale = 1.20; // fullscreen
153 defaultConfig.hscale40 = 1.25;
154 defaultConfig.hscale32 = 1.56;
155 defaultConfig.turbo_rate = 15;
156}
157
158void emu_setDefaultConfig(void)
159{
160 memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));
161 PicoOpt = currentConfig.s_PicoOpt;
162 PsndRate = currentConfig.s_PsndRate;
163 PicoRegionOverride = currentConfig.s_PicoRegion;
164 PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;
165 PicoCDBuffers = currentConfig.s_PicoCDBuffers;
166}
167
168
169extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
170extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
171
172static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
173
174struct Vertex
175{
176 short u,v;
177 short x,y,z;
178};
179
180static struct Vertex __attribute__((aligned(4))) g_vertices[2];
181static unsigned short __attribute__((aligned(16))) localPal[0x100];
182static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
183static int fbimg_offs = 0;
184
185static void set_scaling_params(void)
186{
187 int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
188 g_vertices[0].x = g_vertices[0].y =
189 g_vertices[0].z = g_vertices[1].z = 0;
190
191 fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
192 if (Pico.video.reg[12] & 1) {
193 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
194 src_width = 320;
195 } else {
196 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
197 src_width = 256;
198 }
199
200 if (fbimg_width & 1) fbimg_width++; // make even
201 if (fbimg_height & 1) fbimg_height++;
202
203 if (fbimg_width >= 480) {
204 g_vertices[0].u = (fbimg_width-480)/2;
205 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
206 fbimg_width = 480;
207 fbimg_xoffs = 0;
208 } else {
209 g_vertices[0].u = 0;
210 g_vertices[1].u = src_width;
211 fbimg_xoffs = 240 - fbimg_width/2;
212 }
213 if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
214
215 if (fbimg_height >= 272) {
216 g_vertices[0].v = (fbimg_height-272)/2;
217 g_vertices[1].v = 240 - (fbimg_height-272)/2;
218 fbimg_height = 272;
219 fbimg_yoffs = 0;
220 } else {
221 g_vertices[0].v = 0;
222 g_vertices[1].v = 240;
223 fbimg_yoffs = 136 - fbimg_height/2;
224 }
225
226 g_vertices[1].x = fbimg_width;
227 g_vertices[1].y = fbimg_height;
228 if (fbimg_xoffs < 0) fbimg_xoffs = 0;
229 if (fbimg_yoffs < 0) fbimg_yoffs = 0;
230 if (border_hack) {
231 g_vertices[0].u++;
232 g_vertices[0].x++;
233 g_vertices[1].u--;
234 g_vertices[1].x--;
235 }
236 fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
237
238 /*
239 lprintf("set_scaling_params:\n");
240 lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
241 lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
242 lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
243 */
244}
245
246static void do_pal_update(int allow_sh, int allow_as)
247{
248 unsigned int *dpal=(void *)localPal;
249 int i;
250
251 //for (i = 0x3f/2; i >= 0; i--)
252 // dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
253 do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
254
255 Pico.m.dirtyPal = 0;
256 need_pal_upload = 1;
257
258 if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
259 {
260 // shadowed pixels
261 for (i = 0x3f/2; i >= 0; i--)
262 dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
263 // hilighted pixels
264 for (i = 0x3f; i >= 0; i--) {
265 int t=localPal[i]&0xf79e;t+=0x4208;
266 if (t&0x20) t|=0x1e;
267 if (t&0x800) t|=0x780;
268 if (t&0x10000) t|=0xf000;
269 t&=0xf79e;
270 localPal[0x80|i]=(unsigned short)t;
271 }
272 localPal[0xe0] = 0;
273 localPal[0xf0] = 0x001f;
274 }
275 else if (allow_as && (rendstatus & PDRAW_ACC_SPRITES))
276 {
277 memcpy32((int *)(void *)(localPal+0x80), (void *)localPal, 0x40/2);
278 }
279}
280
281static void do_slowmode_lines(int line_to)
282{
283 int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
284 unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
285 unsigned char *src = (unsigned char *)VRAM_CACHED_STUFF + 16;
286 if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
287
288 for (; line < line_to; line++, dst+=512, src+=512)
289 amips_clut_f(dst, src, localPal, line_len);
290}
291
292static void EmuScanPrepare(void)
293{
294 HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
295 if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
296
297 if (dynamic_palette > 0)
298 dynamic_palette--;
299 if (Pico.m.dirtyPal)
300 do_pal_update(1, 1);
301 if ((rendstatus & PDRAW_ACC_SPRITES) && !(Pico.video.reg[0xC]&8))
302 amips_clut_f = amips_clut_6bit;
303 else amips_clut_f = amips_clut;
304}
305
306static int EmuScanSlowBegin(unsigned int num)
307{
308 if (!(Pico.video.reg[1]&8)) num += 8;
309
310 if (!dynamic_palette)
311 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
312
313 return 0;
314}
315
316static int EmuScanSlowEnd(unsigned int num)
317{
318 if (!(Pico.video.reg[1]&8)) num += 8;
319
320 if (Pico.m.dirtyPal) {
321 if (!dynamic_palette) {
322 do_slowmode_lines(num);
323 dynamic_palette = 3; // last for 2 more frames
324 }
325 do_pal_update(1, 0);
326 }
327
328 if (dynamic_palette) {
329 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
330 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
331 amips_clut_f(dst, HighCol + 8, localPal, line_len);
332 }
333
334 return 0;
335}
336
337static void blitscreen_clut(void)
338{
339 int offs = fbimg_offs;
340 offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
341
342 sceGuSync(0,0); // sync with prev
343 sceGuStart(GU_DIRECT, guCmdList);
344 sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
345
346 if (dynamic_palette)
347 {
348 if (!blit_16bit_mode) { // the current mode is not 16bit
349 sceGuTexMode(GU_PSM_5650, 0, 0, 0);
350 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
351
352 blit_16bit_mode = 1;
353 }
354 }
355 else
356 {
357 if (blit_16bit_mode) {
358 sceGuClutMode(GU_PSM_5650,0,0xff,0);
359 sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
360 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
361 blit_16bit_mode = 0;
362 }
363
364 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
365 do_pal_update(0, 0);
366
367 sceKernelDcacheWritebackAll();
368
369 if (need_pal_upload) {
370 need_pal_upload = 0;
371 sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
372 }
373 }
374
375#if 1
376 if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
377 {
378 struct Vertex* vertices;
379 int x;
380
381 #define SLICE_WIDTH 32
382 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
383 {
384 // render sprite
385 vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
386 memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
387 vertices[0].u = vertices[0].x = x;
388 vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
389 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
390 }
391 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
392 }
393 else
394#endif
395 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
396
397 sceGuFinish();
398}
399
400
401static void cd_leds(void)
402{
403 unsigned int reg, col_g, col_r, *p;
404
405 reg = Pico_mcd->s68k_regs[0];
406
407 p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
408 col_g = (reg & 2) ? 0x06000600 : 0;
409 col_r = (reg & 1) ? 0x00180018 : 0;
410 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
411 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
412 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
413}
414
415static void draw_pico_ptr(void)
416{
417 unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
418
419 // only if pen enabled and for 8bit mode
420 if (pico_inp_mode == 0 || blit_16bit_mode) return;
421
422 p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
423 p += pico_pen_x + PICO_PEN_ADJUST_X;
424 p[ -1] = 0xe0; p[ 0] = 0xf0; p[ 1] = 0xe0;
425 p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
426 p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
427}
428
429
430#if 0
431static void dbg_text(void)
432{
433 int *p, h, len;
434 char text[128];
435
436 sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
437 len = strlen(text) * 8 / 2;
438 for (h = 0; h < 8; h++) {
439 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
440 p = (int *) ((int)p & ~3); // align
441 memset32_uncached(p, 0, len);
442 }
443 emu_textOut16(2, 256, text);
444}
445#endif
446
447/* called after rendering is done, but frame emulation is not finished */
448void blit1(void)
449{
450 if (PicoOpt&0x10)
451 {
452 int i;
453 unsigned char *pd;
454 // clear top and bottom trash
455 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
456 memset32((int *)pd, 0xe0e0e0e0, 320/4);
457 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
458 memset32((int *)pd, 0xe0e0e0e0, 320/4);
459 }
460
461 if (PicoAHW & PAHW_PICO)
462 draw_pico_ptr();
463
464 blitscreen_clut();
465}
466
467
468static void blit2(const char *fps, const char *notice, int lagging_behind)
469{
470 int vsync = 0, emu_opt = currentConfig.EmuOpt;
471
472 if (notice || (emu_opt & 2)) {
473 if (notice) osd_text(4, notice, 0, 0);
474 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
475 }
476
477 //dbg_text();
478
479 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
480 cd_leds();
481
482 if (currentConfig.EmuOpt & 0x2000) { // want vsync
483 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
484 }
485
486 psp_video_flip(vsync);
487}
488
489// clears whole screen or just the notice area (in all buffers)
490static void clearArea(int full)
491{
492 if (full) {
493 memset32_uncached(psp_screen, 0, 512*272*2/4);
494 psp_video_flip(0);
495 memset32_uncached(psp_screen, 0, 512*272*2/4);
496 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
497 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
498 } else {
499 void *fb = psp_video_get_active_fb();
500 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
501 memset32_uncached((int *)((char *)fb + 512*264*2), 0, 512*8*2/4);
502 }
503}
504
505static void vidResetMode(void)
506{
507 // setup GU
508 sceGuSync(0,0); // sync with prev
509 sceGuStart(GU_DIRECT, guCmdList);
510
511 sceGuClutMode(GU_PSM_5650,0,0xff,0);
512 sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
513 sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
514 if (currentConfig.scaling)
515 sceGuTexFilter(GU_LINEAR, GU_LINEAR);
516 else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
517 sceGuTexScale(1.0f,1.0f);
518 sceGuTexOffset(0.0f,0.0f);
519
520 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
521
522 // slow rend.
523 PicoDrawSetColorFormat(-1);
524 PicoScanBegin = EmuScanSlowBegin;
525 PicoScanEnd = EmuScanSlowEnd;
526
527 localPal[0xe0] = 0;
528 localPal[0xf0] = 0x001f;
529 Pico.m.dirtyPal = 1;
530 blit_16bit_mode = dynamic_palette = 0;
531
532 sceGuFinish();
533 set_scaling_params();
534 sceGuSync(0,0);
535}
536
537
538/* sound stuff */
539#define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
540#define SOUND_BLOCK_SIZE_PAL (1764*2)
541#define SOUND_BLOCK_COUNT 8
542
543static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
544static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
545static int samples_made = 0, samples_done = 0, samples_block = 0;
546static int sound_thread_exit = 0;
547static SceUID sound_sem = -1;
548
549static void writeSound(int len);
550
551static int sound_thread(SceSize args, void *argp)
552{
553 int ret = 0;
554
555 lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
556
557 while (!sound_thread_exit)
558 {
559 if (samples_made - samples_done < samples_block) {
560 // wait for data (use at least 2 blocks)
561 //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
562 while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
563 ret = sceKernelWaitSema(sound_sem, 1, 0);
564 if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
565 continue;
566 }
567
568 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
569
570 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
571
572 samples_done += samples_block;
573 snd_playptr += samples_block;
574 if (snd_playptr >= sndBuffer_endptr)
575 snd_playptr = sndBuffer;
576 // 1.5 kernel returns 0, newer ones return # of samples queued
577 if (ret < 0)
578 lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
579
580 // shouln't happen, but just in case
581 if (samples_made - samples_done >= samples_block*3) {
582 //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
583 samples_done += samples_block; // skip
584 snd_playptr += samples_block;
585 }
586
587 }
588
589 lprintf("sthr: exit\n");
590 sceKernelExitDeleteThread(0);
591 return 0;
592}
593
594static void sound_init(void)
595{
596 SceUID thid;
597 int ret;
598
599 sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
600 if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
601
602 samples_made = samples_done = 0;
603 samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
604 sound_thread_exit = 0;
605 thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
606 if (thid >= 0)
607 {
608 ret = sceKernelStartThread(thid, 0, 0);
609 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
610 }
611 else
612 lprintf("sceKernelCreateThread failed: %i\n", thid);
613}
614
615static void sound_prepare(void)
616{
617 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
618 int ret, stereo;
619
620 samples_made = samples_done = 0;
621
622 if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
623 PsndRerate(Pico.m.frame_count ? 1 : 0);
624 }
625 stereo=(PicoOpt&8)>>3;
626
627 samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
628 if (PsndRate <= 22050) samples_block /= 2;
629 sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
630
631 lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
632 PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
633
634 // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
635 // sceAudio_5C37C0AE();
636 ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
637 if (ret < 0) {
638 lprintf("sceAudio_38553111() failed: %i\n", ret);
639 sprintf(noticeMsg, "sound init failed (%i), snd disabled", ret);
640 noticeMsgTime = sceKernelGetSystemTimeLow();
641 currentConfig.EmuOpt &= ~4;
642 } else {
643 PicoWriteSound = writeSound;
644 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
645 snd_playptr = sndBuffer_endptr - samples_block;
646 samples_made = samples_block; // send 1 empty block first..
647 PsndOut = sndBuffer;
648 PsndRate_old = PsndRate;
649 PicoOpt_old = PicoOpt;
650 pal_old = Pico.m.pal;
651 }
652}
653
654static void sound_end(void)
655{
656 int i;
657 if (samples_done == 0)
658 {
659 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
660 // we get a deadlock on next sceAudio_38553111 call
661 // so this is yet another workaround:
662 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
663 samples_made = samples_block * 3;
664 sceKernelSignalSema(sound_sem, 1);
665 }
666 sceKernelDelayThread(100*1000);
667 samples_made = samples_done = 0;
668 for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
669 psp_msleep(100);
670 sceAudio_5C37C0AE();
671}
672
673static void sound_deinit(void)
674{
675 sound_thread_exit = 1;
676 sceKernelSignalSema(sound_sem, 1);
677 sceKernelDeleteSema(sound_sem);
678 sound_sem = -1;
679}
680
681static void writeSound(int len)
682{
683 int ret;
684 if (PicoOpt&8) len<<=1;
685
686 PsndOut += len;
687 /*if (PsndOut > sndBuffer_endptr) {
688 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
689 PsndOut = &sndBuffer[PsndOut - endptr];
690 lprintf("mov\n");
691 }
692 else*/
693 if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
694 if (PsndOut >= sndBuffer_endptr)
695 PsndOut = sndBuffer;
696
697 // signal the snd thread
698 samples_made += len;
699 if (samples_made - samples_done > samples_block*2) {
700 // lprintf("signal, %i/%i\n", samples_done, samples_made);
701 ret = sceKernelSignalSema(sound_sem, 1);
702 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
703 }
704}
705
706
707static void SkipFrame(void)
708{
709 PicoSkipFrame=1;
710 PicoFrame();
711 PicoSkipFrame=0;
712}
713
714void emu_forcedFrame(int opts)
715{
716 int po_old = PicoOpt;
717 int eo_old = currentConfig.EmuOpt;
718
719 PicoOpt &= ~0x10;
720 PicoOpt |= opts|POPT_ACC_SPRITES;
721 currentConfig.EmuOpt |= 0x80;
722
723 vidResetMode();
724 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
725 memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
726 memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
727
728 PicoDrawSetColorFormat(-1);
729 PicoScanBegin = EmuScanSlowBegin;
730 PicoScanEnd = EmuScanSlowEnd;
731 EmuScanPrepare();
732 PicoFrameDrawOnly();
733 blit1();
734 sceGuSync(0,0);
735
736 PicoOpt = po_old;
737 currentConfig.EmuOpt = eo_old;
738}
739
740
741static void RunEventsPico(unsigned int events, unsigned int keys)
742{
743 emu_RunEventsPico(events);
744
745 if (pico_inp_mode != 0)
746 {
747 PicoPad[0] &= ~0x0f; // release UDLR
748 if (keys & BTN_UP) { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
749 if (keys & BTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
750 if (keys & BTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
751 if (keys & BTN_RIGHT) {
752 int lim = (Pico.video.reg[12]&1) ? 319 : 255;
753 pico_pen_x++;
754 if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
755 pico_pen_x = lim-PICO_PEN_ADJUST_X;
756 }
757 PicoPicohw.pen_pos[0] = pico_pen_x;
758 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
759 PicoPicohw.pen_pos[0] += 0x3c;
760 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
761 }
762}
763
764static void RunEvents(unsigned int which)
765{
766 if (which & 0x1800) // save or load (but not both)
767 {
768 int do_it = 1;
769
770 if ( emu_checkSaveFile(state_slot) &&
771 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
772 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
773 {
774 int keys;
775 sceGuSync(0,0);
776 blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
777 while( !((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) )
778 psp_msleep(50);
779 if (keys & BTN_CIRCLE) do_it = 0;
780 while( ((keys = psp_pad_read(1)) & (BTN_X|BTN_CIRCLE)) ) // wait for release
781 psp_msleep(50);
782 clearArea(0);
783 }
784
785 if (do_it)
786 {
787 osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
788 PicoStateProgressCB = emu_msg_cb;
789 emu_SaveLoadGame((which & 0x1000) >> 12, 0);
790 PicoStateProgressCB = NULL;
791 psp_msleep(0);
792 }
793
794 reset_timing = 1;
795 }
796 if (which & 0x0400) // switch renderer
797 {
798 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
799 else { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
800
801 vidResetMode();
802
803 if (PicoOpt&0x10)
804 strcpy(noticeMsg, "fast renderer");
805 else if (currentConfig.EmuOpt&0x80)
806 strcpy(noticeMsg, "accurate renderer");
807
808 noticeMsgTime = sceKernelGetSystemTimeLow();
809 }
810 if (which & 0x0300)
811 {
812 if(which&0x0200) {
813 state_slot -= 1;
814 if(state_slot < 0) state_slot = 9;
815 } else {
816 state_slot += 1;
817 if(state_slot > 9) state_slot = 0;
818 }
819 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");
820 noticeMsgTime = sceKernelGetSystemTimeLow();
821 }
822}
823
824static void updateKeys(void)
825{
826 unsigned int keys, allActions[2] = { 0, 0 }, events;
827 static unsigned int prevEvents = 0;
828 int i;
829
830 keys = psp_pad_read(0);
831 if (keys & PSP_CTRL_HOME)
832 sceDisplayWaitVblankStart();
833
834 if (keys & BTN_SELECT)
835 engineState = PGS_Menu;
836
837 keys &= CONFIGURABLE_KEYS;
838
839 for (i = 0; i < 32; i++)
840 {
841 if (keys & (1 << i))
842 {
843 int pl, acts = currentConfig.KeyBinds[i];
844 if (!acts) continue;
845 pl = (acts >> 16) & 1;
846 if (kb_combo_keys & (1 << i))
847 {
848 int u = i+1, acts_c = acts & kb_combo_acts;
849 // let's try to find the other one
850 if (acts_c) {
851 for (; u < 32; u++)
852 if ( (keys & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {
853 allActions[pl] |= acts_c & currentConfig.KeyBinds[u];
854 keys &= ~((1 << i) | (1 << u));
855 break;
856 }
857 }
858 // add non-combo actions if combo ones were not found
859 if (!acts_c || u == 32)
860 allActions[pl] |= acts & ~kb_combo_acts;
861 } else {
862 allActions[pl] |= acts;
863 }
864 }
865 }
866
867 PicoPad[0] = allActions[0] & 0xfff;
868 PicoPad[1] = allActions[1] & 0xfff;
869
870 if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
871 if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
872
873 events = (allActions[0] | allActions[1]) >> 16;
874
875 if ((events ^ prevEvents) & 0x40) {
876 emu_changeFastForward(events & 0x40);
877 reset_timing = 1;
878 }
879
880 events &= ~prevEvents;
881
882 if (PicoAHW == PAHW_PICO)
883 RunEventsPico(events, keys);
884 if (events) RunEvents(events);
885 if (movie_data) emu_updateMovie();
886
887 prevEvents = (allActions[0] | allActions[1]) >> 16;
888}
889
890
891static void simpleWait(unsigned int until)
892{
893 unsigned int tval;
894 int diff;
895
896 tval = sceKernelGetSystemTimeLow();
897 diff = (int)until - (int)tval;
898 if (diff >= 512 && diff < 100*1024)
899 sceKernelDelayThread(diff);
900}
901
902void emu_Loop(void)
903{
904 static int mp3_init_done = 0;
905 char fpsbuff[24]; // fps count c string
906 unsigned int tval, tval_thissec = 0; // timing
907 int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
908 int pframes_done, pframes_shown; // "period" frames, used for sync
909 int frames_done, frames_shown, tval_fpsc = 0; // actual frames
910 char *notice = NULL;
911
912 lprintf("entered emu_Loop()\n");
913
914 fpsbuff[0] = 0;
915
916 if (currentConfig.CPUclock != psp_get_cpu_clock()) {
917 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
918 i = psp_set_cpu_clock(currentConfig.CPUclock);
919 lprintf(i ? "failed\n" : "done\n");
920 currentConfig.CPUclock = psp_get_cpu_clock();
921 }
922
923 // make sure we are in correct mode
924 vidResetMode();
925 clearArea(1);
926 Pico.m.dirtyPal = 1;
927 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
928 emu_findKeyBindCombos();
929
930 // pal/ntsc might have changed, reset related stuff
931 target_fps = Pico.m.pal ? 50 : 60;
932 target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
933 reset_timing = 1;
934
935 if (PicoAHW & PAHW_MCD) {
936 // prepare CD buffer
937 PicoCDBufferInit();
938 // mp3...
939 if (!mp3_init_done) {
940 i = mp3_init();
941 mp3_init_done = 1;
942 if (i) { engineState = PGS_Menu; return; }
943 }
944 }
945
946 // prepare sound stuff
947 PsndOut = NULL;
948 if (currentConfig.EmuOpt & 4)
949 {
950 sound_prepare();
951 }
952
953 sceDisplayWaitVblankStart();
954 pframes_shown = pframes_done =
955 frames_shown = frames_done = 0;
956
957 tval_fpsc = sceKernelGetSystemTimeLow();
958
959 // loop?
960 while (engineState == PGS_Running)
961 {
962 int modes;
963
964 tval = sceKernelGetSystemTimeLow();
965 if (reset_timing || tval < tval_fpsc) {
966 //stdbg("timing reset");
967 reset_timing = 0;
968 tval_thissec = tval;
969 pframes_shown = pframes_done = 0;
970 }
971
972 // show notice message?
973 if (noticeMsgTime) {
974 static int noticeMsgSum;
975 if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
976 noticeMsgTime = 0;
977 clearArea(0);
978 notice = 0;
979 } else {
980 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
981 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
982 notice = noticeMsg;
983 }
984 }
985
986 // check for mode changes
987 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
988 if (modes != oldmodes) {
989 oldmodes = modes;
990 clearArea(1);
991 set_scaling_params();
992 }
993
994 // second passed?
995 if (tval - tval_fpsc >= 1000000)
996 {
997 if (currentConfig.EmuOpt & 2)
998 sprintf(fpsbuff, "%02i/%02i ", frames_shown, frames_done);
999 frames_done = frames_shown = 0;
1000 tval_fpsc += 1000000;
1001 }
1002
1003 if (tval - tval_thissec >= 1000000)
1004 {
1005 // missing 1 frame?
1006 if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
1007 SkipFrame(); pframes_done++; frames_done++;
1008 }
1009
1010 tval_thissec += 1000000;
1011
1012 if (currentConfig.Frameskip < 0) {
1013 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;
1014 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
1015 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
1016 } else {
1017 pframes_done = pframes_shown = 0;
1018 }
1019 }
1020#ifdef PFRAMES
1021 sprintf(fpsbuff, "%i", Pico.m.frame_count);
1022#endif
1023
1024 lim_time = (pframes_done+1) * target_frametime;
1025 if (currentConfig.Frameskip >= 0) // frameskip enabled
1026 {
1027 for (i = 0; i < currentConfig.Frameskip; i++) {
1028 updateKeys();
1029 SkipFrame(); pframes_done++; frames_done++;
1030 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
1031 int tval_diff;
1032 tval = sceKernelGetSystemTimeLow();
1033 tval_diff = (int)(tval - tval_thissec) << 8;
1034 if (tval_diff < lim_time) // we are too fast
1035 simpleWait(tval + ((lim_time - tval_diff)>>8));
1036 }
1037 lim_time += target_frametime;
1038 }
1039 }
1040 else // auto frameskip
1041 {
1042 int tval_diff;
1043 tval = sceKernelGetSystemTimeLow();
1044 tval_diff = (int)(tval - tval_thissec) << 8;
1045 if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
1046 {
1047 // no time left for this frame - skip
1048 if (tval_diff - lim_time >= (300000<<8)) {
1049 reset_timing = 1;
1050 continue;
1051 }
1052 updateKeys();
1053 SkipFrame(); pframes_done++; frames_done++;
1054 continue;
1055 }
1056 }
1057
1058 updateKeys();
1059
1060 if (!(PicoOpt&0x10))
1061 EmuScanPrepare();
1062
1063 PicoFrame();
1064
1065 sceGuSync(0,0);
1066
1067 // check time
1068 tval = sceKernelGetSystemTimeLow();
1069 tval_diff = (int)(tval - tval_thissec) << 8;
1070
1071 blit2(fpsbuff, notice, tval_diff > lim_time);
1072
1073 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1074 reset_timing = 1;
1075 }
1076 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1077 {
1078 // sleep if we are still too fast
1079 if (tval_diff < lim_time)
1080 {
1081 // we are too fast
1082 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1083 }
1084 }
1085
1086 pframes_done++; pframes_shown++;
1087 frames_done++; frames_shown++;
1088 }
1089
1090
1091 emu_changeFastForward(0);
1092
1093 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1094
1095 if (PsndOut != NULL) {
1096 PsndOut = NULL;
1097 sound_end();
1098 }
1099
1100 // save SRAM
1101 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1102 emu_msg_cb("Writing SRAM/BRAM..");
1103 emu_SaveLoadGame(0, 1);
1104 SRam.changed = 0;
1105 }
1106
1107 // clear fps counters and stuff
1108 memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1109}
1110
1111
1112void emu_ResetGame(void)
1113{
1114 PicoReset();
1115 reset_timing = 1;
1116}
1117
1118void emu_HandleResume(void)
1119{
1120 if (!(PicoAHW & PAHW_MCD)) return;
1121
1122 // reopen first CD track
1123 if (Pico_mcd->TOC.Tracks[0].F != NULL)
1124 {
1125 char *fname = romFileName;
1126 int len = strlen(romFileName);
1127 cue_data_t *cue_data = NULL;
1128
1129 if (len > 4 && strcasecmp(fname + len - 4, ".cue") == 0)
1130 {
1131 cue_data = cue_parse(romFileName);
1132 if (cue_data != NULL)
1133 fname = cue_data->tracks[1].fname;
1134 }
1135
1136 lprintf("emu_HandleResume: reopen %s\n", fname);
1137 pm_close(Pico_mcd->TOC.Tracks[0].F);
1138 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1139 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1140
1141 if (cue_data != NULL) cue_destroy(cue_data);
1142 }
1143
1144 mp3_reopen_file();
1145
1146 if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1147 cdda_start_play();
1148}
1149
fast MegaDrive/MegaCD/32X emulator