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some pandora tweaks
[libpicofe.git] / psp / emu.c
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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/pico_int.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
36unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
37int engineStateSuspend;
38
39#define PICO_PEN_ADJUST_X 4
40#define PICO_PEN_ADJUST_Y 2
41static int pico_pen_x = 320/2, pico_pen_y = 240/2;
42
43static void sound_init(void);
44static void sound_deinit(void);
45static void blit2(const char *fps, const char *notice, int lagging_behind);
46static void clearArea(int full);
47
48int plat_get_root_dir(char *dst, int len)
49{
50 if (len > 0) *dst = 0;
51 return 0;
52}
53
54static void osd_text(int x, const char *text, int is_active, int clear_all)
55{
56 unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
57 int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
58 int *p, h;
59 void *tmp;
60 for (h = 0; h < 8; h++) {
61 p = (int *) (screen+x+512*(264+h));
62 p = (int *) ((int)p & ~3); // align
63 memset32_uncached(p, 0, len);
64 }
65 if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
66 emu_text_out16(x, 264, text);
67 if (is_active) psp_screen = tmp;
68}
69
70void emu_msg_cb(const char *msg)
71{
72 osd_text(4, msg, 1, 1);
73 noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
74
75 /* assumption: emu_msg_cb gets called only when something slow is about to happen */
76 reset_timing = 1;
77}
78
79/* FIXME: move to plat */
80void emu_Init(void)
81{
82 sound_init();
83}
84
85void emu_Deinit(void)
86{
87 sound_deinit();
88}
89
90void pemu_prep_defconfig(void)
91{
92 defaultConfig.s_PsndRate = 22050;
93 defaultConfig.s_PicoCDBuffers = 64;
94 defaultConfig.CPUclock = 333;
95 defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
96 defaultConfig.KeyBinds[ 6] = 1<<1;
97 defaultConfig.KeyBinds[ 7] = 1<<2;
98 defaultConfig.KeyBinds[ 5] = 1<<3;
99 defaultConfig.KeyBinds[14] = 1<<4;
100 defaultConfig.KeyBinds[13] = 1<<5;
101 defaultConfig.KeyBinds[15] = 1<<6;
102 defaultConfig.KeyBinds[ 3] = 1<<7;
103 defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
104 defaultConfig.KeyBinds[ 8] = 1<<27; // save state
105 defaultConfig.KeyBinds[ 9] = 1<<28; // load state
106 defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
107 defaultConfig.KeyBinds[30] = 1<<1;
108 defaultConfig.KeyBinds[31] = 1<<2;
109 defaultConfig.KeyBinds[29] = 1<<3;
110 defaultConfig.scaling = 1; // bilinear filtering for psp
111 defaultConfig.scale = 1.20; // fullscreen
112 defaultConfig.hscale40 = 1.25;
113 defaultConfig.hscale32 = 1.56;
114}
115
116
117extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
118extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
119
120static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
121
122struct Vertex
123{
124 short u,v;
125 short x,y,z;
126};
127
128static struct Vertex __attribute__((aligned(4))) g_vertices[2];
129static unsigned short __attribute__((aligned(16))) localPal[0x100];
130static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
131static int fbimg_offs = 0;
132
133static void set_scaling_params(void)
134{
135 int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
136 g_vertices[0].x = g_vertices[0].y =
137 g_vertices[0].z = g_vertices[1].z = 0;
138
139 fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
140 if (Pico.video.reg[12] & 1) {
141 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
142 src_width = 320;
143 } else {
144 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
145 src_width = 256;
146 }
147
148 if (fbimg_width & 1) fbimg_width++; // make even
149 if (fbimg_height & 1) fbimg_height++;
150
151 if (fbimg_width >= 480) {
152 g_vertices[0].u = (fbimg_width-480)/2;
153 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
154 fbimg_width = 480;
155 fbimg_xoffs = 0;
156 } else {
157 g_vertices[0].u = 0;
158 g_vertices[1].u = src_width;
159 fbimg_xoffs = 240 - fbimg_width/2;
160 }
161 if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
162
163 if (fbimg_height >= 272) {
164 g_vertices[0].v = (fbimg_height-272)/2;
165 g_vertices[1].v = 240 - (fbimg_height-272)/2;
166 fbimg_height = 272;
167 fbimg_yoffs = 0;
168 } else {
169 g_vertices[0].v = 0;
170 g_vertices[1].v = 240;
171 fbimg_yoffs = 136 - fbimg_height/2;
172 }
173
174 g_vertices[1].x = fbimg_width;
175 g_vertices[1].y = fbimg_height;
176 if (fbimg_xoffs < 0) fbimg_xoffs = 0;
177 if (fbimg_yoffs < 0) fbimg_yoffs = 0;
178 if (border_hack) {
179 g_vertices[0].u++;
180 g_vertices[0].x++;
181 g_vertices[1].u--;
182 g_vertices[1].x--;
183 }
184 fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
185
186 /*
187 lprintf("set_scaling_params:\n");
188 lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
189 lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
190 lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
191 */
192}
193
194static void do_pal_update(int allow_sh, int allow_as)
195{
196 unsigned int *dpal=(void *)localPal;
197 int i;
198
199 //for (i = 0x3f/2; i >= 0; i--)
200 // dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
201 do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
202
203 Pico.m.dirtyPal = 0;
204 need_pal_upload = 1;
205
206 if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
207 {
208 // shadowed pixels
209 for (i = 0x3f/2; i >= 0; i--)
210 dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
211 // hilighted pixels
212 for (i = 0x3f; i >= 0; i--) {
213 int t=localPal[i]&0xf79e;t+=0x4208;
214 if (t&0x20) t|=0x1e;
215 if (t&0x800) t|=0x780;
216 if (t&0x10000) t|=0xf000;
217 t&=0xf79e;
218 localPal[0x80|i]=(unsigned short)t;
219 }
220 localPal[0xe0] = 0;
221 localPal[0xf0] = 0x001f;
222 }
223 else if (allow_as && (rendstatus & PDRAW_SPR_LO_ON_HI))
224 {
225 memcpy32((int *)dpal+0x80/2, (void *)localPal, 0x40*2/4);
226 }
227}
228
229static void do_slowmode_lines(int line_to)
230{
231 int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
232 unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
233 unsigned char *src = (unsigned char *)VRAM_CACHED_STUFF + 16;
234 if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
235
236 for (; line < line_to; line++, dst+=512, src+=512)
237 amips_clut_f(dst, src, localPal, line_len);
238}
239
240static void EmuScanPrepare(void)
241{
242 HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
243 if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
244
245 if (dynamic_palette > 0)
246 dynamic_palette--;
247
248 if (Pico.m.dirtyPal)
249 do_pal_update(1, 1);
250 if ((rendstatus & PDRAW_SPR_LO_ON_HI) && !(Pico.video.reg[0xC]&8))
251 amips_clut_f = amips_clut_6bit;
252 else amips_clut_f = amips_clut;
253}
254
255static int EmuScanSlowBegin(unsigned int num)
256{
257 if (!dynamic_palette)
258 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
259
260 return 0;
261}
262
263static int EmuScanSlowEnd(unsigned int num)
264{
265 if (Pico.m.dirtyPal) {
266 if (!dynamic_palette) {
267 do_slowmode_lines(num);
268 dynamic_palette = 3; // last for 2 more frames
269 }
270 do_pal_update(1, 1);
271 }
272
273 if (dynamic_palette) {
274 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
275 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
276 amips_clut_f(dst, HighCol + 8, localPal, line_len);
277 }
278
279 return 0;
280}
281
282static void blitscreen_clut(void)
283{
284 int offs = fbimg_offs;
285 offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
286
287 sceGuSync(0,0); // sync with prev
288 sceGuStart(GU_DIRECT, guCmdList);
289 sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
290
291 if (dynamic_palette)
292 {
293 if (!blit_16bit_mode) { // the current mode is not 16bit
294 sceGuTexMode(GU_PSM_5650, 0, 0, 0);
295 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
296
297 blit_16bit_mode = 1;
298 }
299 }
300 else
301 {
302 if (blit_16bit_mode) {
303 sceGuClutMode(GU_PSM_5650,0,0xff,0);
304 sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
305 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
306 blit_16bit_mode = 0;
307 }
308
309 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
310 do_pal_update(0, 0);
311
312 sceKernelDcacheWritebackAll();
313
314 if (need_pal_upload) {
315 need_pal_upload = 0;
316 sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
317 }
318 }
319
320#if 1
321 if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
322 {
323 struct Vertex* vertices;
324 int x;
325
326 #define SLICE_WIDTH 32
327 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
328 {
329 // render sprite
330 vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
331 memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
332 vertices[0].u = vertices[0].x = x;
333 vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
334 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
335 }
336 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
337 }
338 else
339#endif
340 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
341
342 sceGuFinish();
343}
344
345
346static void cd_leds(void)
347{
348 unsigned int reg, col_g, col_r, *p;
349
350 reg = Pico_mcd->s68k_regs[0];
351
352 p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
353 col_g = (reg & 2) ? 0x06000600 : 0;
354 col_r = (reg & 1) ? 0x00180018 : 0;
355 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
356 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
357 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
358}
359
360static void draw_pico_ptr(void)
361{
362 unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
363
364 // only if pen enabled and for 8bit mode
365 if (pico_inp_mode == 0 || blit_16bit_mode) return;
366
367 p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
368 p += pico_pen_x + PICO_PEN_ADJUST_X;
369 p[ -1] = 0xe0; p[ 0] = 0xf0; p[ 1] = 0xe0;
370 p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
371 p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
372}
373
374
375#if 0
376static void dbg_text(void)
377{
378 int *p, h, len;
379 char text[128];
380
381 sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
382 len = strlen(text) * 8 / 2;
383 for (h = 0; h < 8; h++) {
384 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
385 p = (int *) ((int)p & ~3); // align
386 memset32_uncached(p, 0, len);
387 }
388 emu_text_out16(2, 256, text);
389}
390#endif
391
392/* called after rendering is done, but frame emulation is not finished */
393void blit1(void)
394{
395 if (PicoOpt&0x10)
396 {
397 int i;
398 unsigned char *pd;
399 // clear top and bottom trash
400 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
401 memset32((int *)pd, 0xe0e0e0e0, 320/4);
402 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
403 memset32((int *)pd, 0xe0e0e0e0, 320/4);
404 }
405
406 if (PicoAHW & PAHW_PICO)
407 draw_pico_ptr();
408
409 blitscreen_clut();
410}
411
412
413static void blit2(const char *fps, const char *notice, int lagging_behind)
414{
415 int vsync = 0, emu_opt = currentConfig.EmuOpt;
416
417 if (notice || (emu_opt & 2)) {
418 if (notice) osd_text(4, notice, 0, 0);
419 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
420 }
421
422 //dbg_text();
423
424 if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
425 cd_leds();
426
427 if (currentConfig.EmuOpt & 0x2000) { // want vsync
428 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
429 }
430
431 psp_video_flip(vsync);
432}
433
434// clears whole screen or just the notice area (in all buffers)
435static void clearArea(int full)
436{
437 if (full) {
438 memset32_uncached(psp_screen, 0, 512*272*2/4);
439 psp_video_flip(0);
440 memset32_uncached(psp_screen, 0, 512*272*2/4);
441 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
442 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
443 } else {
444 void *fb = psp_video_get_active_fb();
445 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
446 memset32_uncached((int *)((char *)fb + 512*264*2), 0, 512*8*2/4);
447 }
448}
449
450static void vidResetMode(void)
451{
452 // setup GU
453 sceGuSync(0,0); // sync with prev
454 sceGuStart(GU_DIRECT, guCmdList);
455
456 sceGuClutMode(GU_PSM_5650,0,0xff,0);
457 sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
458 sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
459 if (currentConfig.scaling)
460 sceGuTexFilter(GU_LINEAR, GU_LINEAR);
461 else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
462 sceGuTexScale(1.0f,1.0f);
463 sceGuTexOffset(0.0f,0.0f);
464
465 sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
466
467 // slow rend.
468 PicoDrawSetOutFormat(PDF_NONE, 0);
469 PicoScanBegin = EmuScanSlowBegin;
470 PicoScanEnd = EmuScanSlowEnd;
471
472 localPal[0xe0] = 0;
473 localPal[0xf0] = 0x001f;
474 Pico.m.dirtyPal = 1;
475 blit_16bit_mode = dynamic_palette = 0;
476
477 sceGuFinish();
478 set_scaling_params();
479 sceGuSync(0,0);
480}
481
482void plat_debug_cat(char *str)
483{
484 strcat(str, blit_16bit_mode ? "soft clut\n" : "hard clut\n");
485}
486
487
488/* sound stuff */
489#define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
490#define SOUND_BLOCK_SIZE_PAL (1764*2)
491#define SOUND_BLOCK_COUNT 8
492
493static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
494static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
495static int samples_made = 0, samples_done = 0, samples_block = 0;
496static int sound_thread_exit = 0;
497static SceUID sound_sem = -1;
498
499static void writeSound(int len);
500
501static int sound_thread(SceSize args, void *argp)
502{
503 int ret = 0;
504
505 lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
506
507 while (!sound_thread_exit)
508 {
509 if (samples_made - samples_done < samples_block) {
510 // wait for data (use at least 2 blocks)
511 //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
512 while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
513 ret = sceKernelWaitSema(sound_sem, 1, 0);
514 if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
515 continue;
516 }
517
518 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
519
520 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
521
522 samples_done += samples_block;
523 snd_playptr += samples_block;
524 if (snd_playptr >= sndBuffer_endptr)
525 snd_playptr = sndBuffer;
526 // 1.5 kernel returns 0, newer ones return # of samples queued
527 if (ret < 0)
528 lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
529
530 // shouln't happen, but just in case
531 if (samples_made - samples_done >= samples_block*3) {
532 //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
533 samples_done += samples_block; // skip
534 snd_playptr += samples_block;
535 }
536
537 }
538
539 lprintf("sthr: exit\n");
540 sceKernelExitDeleteThread(0);
541 return 0;
542}
543
544static void sound_init(void)
545{
546 SceUID thid;
547 int ret;
548
549 sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
550 if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
551
552 samples_made = samples_done = 0;
553 samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
554 sound_thread_exit = 0;
555 thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
556 if (thid >= 0)
557 {
558 ret = sceKernelStartThread(thid, 0, 0);
559 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
560 }
561 else
562 lprintf("sceKernelCreateThread failed: %i\n", thid);
563}
564
565void pemu_sound_start(void)
566{
567 static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
568 int ret, stereo;
569
570 samples_made = samples_done = 0;
571
572 if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
573 PsndRerate(Pico.m.frame_count ? 1 : 0);
574 }
575 stereo=(PicoOpt&8)>>3;
576
577 samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
578 if (PsndRate <= 22050) samples_block /= 2;
579 sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
580
581 lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
582 PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
583
584 // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
585 // sceAudio_5C37C0AE();
586 ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
587 if (ret < 0) {
588 lprintf("sceAudio_38553111() failed: %i\n", ret);
589 emu_status_msg("sound init failed (%i), snd disabled", ret);
590 currentConfig.EmuOpt &= ~EOPT_EN_SOUND;
591 } else {
592 PicoWriteSound = writeSound;
593 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
594 snd_playptr = sndBuffer_endptr - samples_block;
595 samples_made = samples_block; // send 1 empty block first..
596 PsndOut = sndBuffer;
597 PsndRate_old = PsndRate;
598 PicoOpt_old = PicoOpt;
599 pal_old = Pico.m.pal;
600 }
601}
602
603void pemu_sound_stop(void)
604{
605 int i;
606 if (samples_done == 0)
607 {
608 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
609 // we get a deadlock on next sceAudio_38553111 call
610 // so this is yet another workaround:
611 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
612 samples_made = samples_block * 3;
613 sceKernelSignalSema(sound_sem, 1);
614 }
615 sceKernelDelayThread(100*1000);
616 samples_made = samples_done = 0;
617 for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
618 psp_msleep(100);
619 sceAudio_5C37C0AE();
620}
621
622/* wait until we can write more sound */
623void pemu_sound_wait(void)
624{
625 // TODO: test this
626 while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
627 psp_msleep(10);
628}
629
630static void sound_deinit(void)
631{
632 sound_thread_exit = 1;
633 sceKernelSignalSema(sound_sem, 1);
634 sceKernelDeleteSema(sound_sem);
635 sound_sem = -1;
636}
637
638static void writeSound(int len)
639{
640 int ret;
641 if (PicoOpt&8) len<<=1;
642
643 PsndOut += len;
644 /*if (PsndOut > sndBuffer_endptr) {
645 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
646 PsndOut = &sndBuffer[PsndOut - endptr];
647 lprintf("mov\n");
648 }
649 else*/
650 if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
651 if (PsndOut >= sndBuffer_endptr)
652 PsndOut = sndBuffer;
653
654 // signal the snd thread
655 samples_made += len;
656 if (samples_made - samples_done > samples_block*2) {
657 // lprintf("signal, %i/%i\n", samples_done, samples_made);
658 ret = sceKernelSignalSema(sound_sem, 1);
659 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
660 }
661}
662
663
664static void SkipFrame(void)
665{
666 PicoSkipFrame=1;
667 PicoFrame();
668 PicoSkipFrame=0;
669}
670
671void pemu_forced_frame(int opts, int no_scale)
672{
673 int po_old = PicoOpt;
674 int eo_old = currentConfig.EmuOpt;
675
676 PicoOpt &= ~0x10;
677 PicoOpt |= opts|POPT_ACC_SPRITES;
678 currentConfig.EmuOpt |= 0x80;
679
680 vidResetMode();
681 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
682 memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
683 memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
684
685 PicoDrawSetOutFormat(PDF_NONE, 0);
686 PicoScanBegin = EmuScanSlowBegin;
687 PicoScanEnd = EmuScanSlowEnd;
688 EmuScanPrepare();
689 PicoFrameDrawOnly();
690 blit1();
691 sceGuSync(0,0);
692
693 PicoOpt = po_old;
694 currentConfig.EmuOpt = eo_old;
695}
696
697
698static void RunEventsPico(unsigned int events, unsigned int keys)
699{
700 emu_RunEventsPico(events);
701
702 if (pico_inp_mode != 0)
703 {
704 PicoPad[0] &= ~0x0f; // release UDLR
705 if (keys & PBTN_UP) { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
706 if (keys & PBTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
707 if (keys & PBTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
708 if (keys & PBTN_RIGHT) {
709 int lim = (Pico.video.reg[12]&1) ? 319 : 255;
710 pico_pen_x++;
711 if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
712 pico_pen_x = lim-PICO_PEN_ADJUST_X;
713 }
714 PicoPicohw.pen_pos[0] = pico_pen_x;
715 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
716 PicoPicohw.pen_pos[0] += 0x3c;
717 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
718 }
719}
720
721static void RunEvents(unsigned int which)
722{
723 if (which & 0x1800) // save or load (but not both)
724 {
725 int do_it = 1;
726
727 if ( emu_check_save_file(state_slot) &&
728 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
729 (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
730 {
731 int keys;
732 sceGuSync(0,0);
733 blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
734 while( !((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) )
735 psp_msleep(50);
736 if (keys & PBTN_CIRCLE) do_it = 0;
737 while( ((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) ) // wait for release
738 psp_msleep(50);
739 clearArea(0);
740 }
741
742 if (do_it)
743 {
744 osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
745 PicoStateProgressCB = emu_msg_cb;
746 emu_save_load_game((which & 0x1000) >> 12, 0);
747 PicoStateProgressCB = NULL;
748 psp_msleep(0);
749 }
750
751 reset_timing = 1;
752 }
753 if (which & 0x0400) // switch renderer
754 {
755 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }
756 else { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
757
758 vidResetMode();
759
760 if (PicoOpt & POPT_ALT_RENDERER)
761 emu_status_msg("fast renderer");
762 else if (currentConfig.EmuOpt&0x80)
763 emu_status_msg("accurate renderer");
764 }
765 if (which & 0x0300)
766 {
767 if(which&0x0200) {
768 state_slot -= 1;
769 if(state_slot < 0) state_slot = 9;
770 } else {
771 state_slot += 1;
772 if(state_slot > 9) state_slot = 0;
773 }
774 emu_status_msg("SAVE SLOT %i [%s]", state_slot,
775 emu_check_save_file(state_slot) ? "USED" : "FREE");
776 }
777}
778
779static void updateKeys(void)
780{
781 unsigned int keys, allActions[2] = { 0, 0 }, events;
782 static unsigned int prevEvents = 0;
783 int i;
784
785 /* FIXME: port to input fw, merge with emu.c:emu_update_input() */
786 keys = psp_pad_read(0);
787 if (keys & PSP_CTRL_HOME)
788 sceDisplayWaitVblankStart();
789
790 if (keys & PBTN_SELECT)
791 engineState = PGS_Menu;
792
793 keys &= CONFIGURABLE_KEYS;
794
795 PicoPad[0] = allActions[0] & 0xfff;
796 PicoPad[1] = allActions[1] & 0xfff;
797
798 if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
799 if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
800
801 events = (allActions[0] | allActions[1]) >> 16;
802
803 if ((events ^ prevEvents) & 0x40) {
804 emu_set_fastforward(events & 0x40);
805 reset_timing = 1;
806 }
807
808 events &= ~prevEvents;
809
810 if (PicoAHW == PAHW_PICO)
811 RunEventsPico(events, keys);
812 if (events) RunEvents(events);
813 if (movie_data) emu_updateMovie();
814
815 prevEvents = (allActions[0] | allActions[1]) >> 16;
816}
817
818
819static void simpleWait(unsigned int until)
820{
821 unsigned int tval;
822 int diff;
823
824 tval = sceKernelGetSystemTimeLow();
825 diff = (int)until - (int)tval;
826 if (diff >= 512 && diff < 100*1024)
827 sceKernelDelayThread(diff);
828}
829
830void pemu_loop(void)
831{
832 static int mp3_init_done = 0;
833 char fpsbuff[24]; // fps count c string
834 unsigned int tval, tval_thissec = 0; // timing
835 int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
836 int pframes_done, pframes_shown; // "period" frames, used for sync
837 int frames_done, frames_shown, tval_fpsc = 0; // actual frames
838 char *notice = NULL;
839
840 lprintf("entered emu_Loop()\n");
841
842 fpsbuff[0] = 0;
843
844 if (currentConfig.CPUclock != psp_get_cpu_clock()) {
845 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
846 i = psp_set_cpu_clock(currentConfig.CPUclock);
847 lprintf(i ? "failed\n" : "done\n");
848 currentConfig.CPUclock = psp_get_cpu_clock();
849 }
850
851 // make sure we are in correct mode
852 vidResetMode();
853 clearArea(1);
854 Pico.m.dirtyPal = 1;
855 oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
856
857 // pal/ntsc might have changed, reset related stuff
858 target_fps = Pico.m.pal ? 50 : 60;
859 target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
860 reset_timing = 1;
861
862 if (PicoAHW & PAHW_MCD) {
863 // prepare CD buffer
864 PicoCDBufferInit();
865 // mp3...
866 if (!mp3_init_done) {
867 i = mp3_init();
868 mp3_init_done = 1;
869 if (i) { engineState = PGS_Menu; return; }
870 }
871 }
872
873 // prepare sound stuff
874 PsndOut = NULL;
875 if (currentConfig.EmuOpt & EOPT_EN_SOUND)
876 {
877 pemu_sound_start();
878 }
879
880 sceDisplayWaitVblankStart();
881 pframes_shown = pframes_done =
882 frames_shown = frames_done = 0;
883
884 tval_fpsc = sceKernelGetSystemTimeLow();
885
886 // loop?
887 while (engineState == PGS_Running)
888 {
889 int modes;
890
891 tval = sceKernelGetSystemTimeLow();
892 if (reset_timing || tval < tval_fpsc) {
893 //stdbg("timing reset");
894 reset_timing = 0;
895 tval_thissec = tval;
896 pframes_shown = pframes_done = 0;
897 }
898
899 // show notice message?
900 if (noticeMsgTime) {
901 static int noticeMsgSum;
902 if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
903 noticeMsgTime = 0;
904 clearArea(0);
905 notice = 0;
906 } else {
907 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
908 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
909 notice = noticeMsg;
910 }
911 }
912
913 // check for mode changes
914 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
915 if (modes != oldmodes) {
916 oldmodes = modes;
917 clearArea(1);
918 set_scaling_params();
919 }
920
921 // second passed?
922 if (tval - tval_fpsc >= 1000000)
923 {
924 if (currentConfig.EmuOpt & 2)
925 sprintf(fpsbuff, "%02i/%02i ", frames_shown, frames_done);
926 frames_done = frames_shown = 0;
927 tval_fpsc += 1000000;
928 }
929
930 if (tval - tval_thissec >= 1000000)
931 {
932 // missing 1 frame?
933 if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
934 SkipFrame(); pframes_done++; frames_done++;
935 }
936
937 tval_thissec += 1000000;
938
939 if (currentConfig.Frameskip < 0) {
940 pframes_done -= target_fps; if (pframes_done < 0) pframes_done = 0;
941 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
942 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
943 } else {
944 pframes_done = pframes_shown = 0;
945 }
946 }
947#ifdef PFRAMES
948 sprintf(fpsbuff, "%i", Pico.m.frame_count);
949#endif
950
951 lim_time = (pframes_done+1) * target_frametime;
952 if (currentConfig.Frameskip >= 0) // frameskip enabled
953 {
954 for (i = 0; i < currentConfig.Frameskip; i++) {
955 updateKeys();
956 SkipFrame(); pframes_done++; frames_done++;
957 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
958 int tval_diff;
959 tval = sceKernelGetSystemTimeLow();
960 tval_diff = (int)(tval - tval_thissec) << 8;
961 if (tval_diff < lim_time) // we are too fast
962 simpleWait(tval + ((lim_time - tval_diff)>>8));
963 }
964 lim_time += target_frametime;
965 }
966 }
967 else // auto frameskip
968 {
969 int tval_diff;
970 tval = sceKernelGetSystemTimeLow();
971 tval_diff = (int)(tval - tval_thissec) << 8;
972 if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
973 {
974 // no time left for this frame - skip
975 if (tval_diff - lim_time >= (300000<<8)) {
976 reset_timing = 1;
977 continue;
978 }
979 updateKeys();
980 SkipFrame(); pframes_done++; frames_done++;
981 continue;
982 }
983 }
984
985 updateKeys();
986
987 if (!(PicoOpt&0x10))
988 EmuScanPrepare();
989
990 PicoFrame();
991
992 sceGuSync(0,0);
993
994 // check time
995 tval = sceKernelGetSystemTimeLow();
996 tval_diff = (int)(tval - tval_thissec) << 8;
997
998 blit2(fpsbuff, notice, tval_diff > lim_time);
999
1000 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1001 reset_timing = 1;
1002 }
1003 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1004 {
1005 // sleep if we are still too fast
1006 if (tval_diff < lim_time)
1007 {
1008 // we are too fast
1009 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1010 }
1011 }
1012
1013 pframes_done++; pframes_shown++;
1014 frames_done++; frames_shown++;
1015 }
1016
1017
1018 emu_set_fastforward(0);
1019
1020 if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1021
1022 if (PsndOut != NULL) {
1023 pemu_sound_stop();
1024 PsndOut = NULL;
1025 }
1026
1027 // save SRAM
1028 if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1029 emu_msg_cb("Writing SRAM/BRAM..");
1030 emu_save_load_game(0, 1);
1031 SRam.changed = 0;
1032 }
1033
1034 // clear fps counters and stuff
1035 memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1036}
1037
1038void emu_HandleResume(void)
1039{
1040 if (!(PicoAHW & PAHW_MCD)) return;
1041
1042 // reopen first CD track
1043 if (Pico_mcd->TOC.Tracks[0].F != NULL)
1044 {
1045 char *fname = rom_fname_reload;
1046 int len = strlen(rom_fname_reload);
1047 cue_data_t *cue_data = NULL;
1048
1049 if (len > 4 && strcasecmp(fname + len - 4, ".cue") == 0)
1050 {
1051 cue_data = cue_parse(rom_fname_reload);
1052 if (cue_data != NULL)
1053 fname = cue_data->tracks[1].fname;
1054 }
1055
1056 lprintf("emu_HandleResume: reopen %s\n", fname);
1057 pm_close(Pico_mcd->TOC.Tracks[0].F);
1058 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1059 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1060
1061 if (cue_data != NULL) cue_destroy(cue_data);
1062 }
1063
1064 mp3_reopen_file();
1065
1066 if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1067 cdda_start_play();
1068}
1069
PicoDrive's frontend in a lib