update for recent /gp2x changes
[picodrive.git] / platform / psp / emu.c
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
30 int sceAudio_38553111(unsigned short samples, unsigned short freq, char unknown);  // play with conversion?
31 int sceAudio_5C37C0AE(void);                            // end play?
32 int sceAudio_E0727056(int volume, void *buffer);        // blocking output
33 int sceAudioOutput2GetRestSample();
34
35
36 unsigned char *PicoDraw2FB = (unsigned char *)VRAM_CACHED_STUFF + 8; // +8 to be able to skip border with 1 quadword..
37 int engineStateSuspend;
38
39 static unsigned int noticeMsgTime = 0;
40
41 #define PICO_PEN_ADJUST_X 4
42 #define PICO_PEN_ADJUST_Y 2
43 static int pico_pen_x = 320/2, pico_pen_y = 240/2;
44
45 static void sound_init(void);
46 static void sound_deinit(void);
47 static void blit2(const char *fps, const char *notice, int lagging_behind);
48 static void clearArea(int full);
49
50 void plat_status_msg(const char *format, ...)
51 {
52         va_list vl;
53
54         va_start(vl, format);
55         vsnprintf(noticeMsg, sizeof(noticeMsg), fmt, vl);
56         va_end(vl);
57
58         noticeMsgTime = sceKernelGetSystemTimeLow();
59 }
60
61 int plat_get_root_dir(char *dst, int len)
62 {
63         if (len > 0) *dst = 0;
64         return 0;
65 }
66
67 static void osd_text(int x, const char *text, int is_active, int clear_all)
68 {
69         unsigned short *screen = is_active ? psp_video_get_active_fb() : psp_screen;
70         int len = clear_all ? (480 / 2) : (strlen(text) * 8 / 2);
71         int *p, h;
72         void *tmp;
73         for (h = 0; h < 8; h++) {
74                 p = (int *) (screen+x+512*(264+h));
75                 p = (int *) ((int)p & ~3); // align
76                 memset32_uncached(p, 0, len);
77         }
78         if (is_active) { tmp = psp_screen; psp_screen = screen; } // nasty pointer tricks
79         emu_text_out16(x, 264, text);
80         if (is_active) psp_screen = tmp;
81 }
82
83 void emu_msg_cb(const char *msg)
84 {
85         osd_text(4, msg, 1, 1);
86         noticeMsgTime = sceKernelGetSystemTimeLow() - 2000000;
87
88         /* assumption: emu_msg_cb gets called only when something slow is about to happen */
89         reset_timing = 1;
90 }
91
92 /* FIXME: move to plat */
93 void emu_Init(void)
94 {
95         sound_init();
96 }
97
98 void emu_Deinit(void)
99 {
100         sound_deinit();
101 }
102
103 void pemu_prep_defconfig(void)
104 {
105         memset(&defaultConfig, 0, sizeof(defaultConfig));
106         defaultConfig.EmuOpt    = 0x1d | 0x680; // | <- confirm_save, cd_leds, acc rend
107         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_MCD_GFX|POPT_ACC_SPRITES;
108         defaultConfig.s_PsndRate = 22050;
109         defaultConfig.s_PicoRegion = 0; // auto
110         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP
111         defaultConfig.s_PicoCDBuffers = 64;
112         defaultConfig.Frameskip = -1; // auto
113         defaultConfig.CPUclock = 333;
114         defaultConfig.KeyBinds[ 4] = 1<<0; // SACB RLDU
115         defaultConfig.KeyBinds[ 6] = 1<<1;
116         defaultConfig.KeyBinds[ 7] = 1<<2;
117         defaultConfig.KeyBinds[ 5] = 1<<3;
118         defaultConfig.KeyBinds[14] = 1<<4;
119         defaultConfig.KeyBinds[13] = 1<<5;
120         defaultConfig.KeyBinds[15] = 1<<6;
121         defaultConfig.KeyBinds[ 3] = 1<<7;
122         defaultConfig.KeyBinds[12] = 1<<26; // switch rnd
123         defaultConfig.KeyBinds[ 8] = 1<<27; // save state
124         defaultConfig.KeyBinds[ 9] = 1<<28; // load state
125         defaultConfig.KeyBinds[28] = 1<<0; // num "buttons"
126         defaultConfig.KeyBinds[30] = 1<<1;
127         defaultConfig.KeyBinds[31] = 1<<2;
128         defaultConfig.KeyBinds[29] = 1<<3;
129         defaultConfig.scaling = 1;     // bilinear filtering for psp
130         defaultConfig.scale = 1.20;    // fullscreen
131         defaultConfig.hscale40 = 1.25;
132         defaultConfig.hscale32 = 1.56;
133         defaultConfig.turbo_rate = 15;
134 }
135
136
137 extern void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
138 extern void amips_clut_6bit(unsigned short *dst, unsigned char *src, unsigned short *pal, int count);
139
140 static void (*amips_clut_f)(unsigned short *dst, unsigned char *src, unsigned short *pal, int count) = NULL;
141
142 struct Vertex
143 {
144         short u,v;
145         short x,y,z;
146 };
147
148 static struct Vertex __attribute__((aligned(4))) g_vertices[2];
149 static unsigned short __attribute__((aligned(16))) localPal[0x100];
150 static int dynamic_palette = 0, need_pal_upload = 0, blit_16bit_mode = 0;
151 static int fbimg_offs = 0;
152
153 static void set_scaling_params(void)
154 {
155         int src_width, fbimg_width, fbimg_height, fbimg_xoffs, fbimg_yoffs, border_hack = 0;
156         g_vertices[0].x = g_vertices[0].y =
157         g_vertices[0].z = g_vertices[1].z = 0;
158
159         fbimg_height = (int)(240.0 * currentConfig.scale + 0.5);
160         if (Pico.video.reg[12] & 1) {
161                 fbimg_width = (int)(320.0 * currentConfig.scale * currentConfig.hscale40 + 0.5);
162                 src_width = 320;
163         } else {
164                 fbimg_width = (int)(256.0 * currentConfig.scale * currentConfig.hscale32 + 0.5);
165                 src_width = 256;
166         }
167
168         if (fbimg_width  & 1) fbimg_width++;  // make even
169         if (fbimg_height & 1) fbimg_height++;
170
171         if (fbimg_width >= 480) {
172                 g_vertices[0].u = (fbimg_width-480)/2;
173                 g_vertices[1].u = src_width - (fbimg_width-480)/2 - 1;
174                 fbimg_width = 480;
175                 fbimg_xoffs = 0;
176         } else {
177                 g_vertices[0].u = 0;
178                 g_vertices[1].u = src_width;
179                 fbimg_xoffs = 240 - fbimg_width/2;
180         }
181         if (fbimg_width > 320 && fbimg_width <= 480) border_hack = 1;
182
183         if (fbimg_height >= 272) {
184                 g_vertices[0].v = (fbimg_height-272)/2;
185                 g_vertices[1].v = 240 - (fbimg_height-272)/2;
186                 fbimg_height = 272;
187                 fbimg_yoffs = 0;
188         } else {
189                 g_vertices[0].v = 0;
190                 g_vertices[1].v = 240;
191                 fbimg_yoffs = 136 - fbimg_height/2;
192         }
193
194         g_vertices[1].x = fbimg_width;
195         g_vertices[1].y = fbimg_height;
196         if (fbimg_xoffs < 0) fbimg_xoffs = 0;
197         if (fbimg_yoffs < 0) fbimg_yoffs = 0;
198         if (border_hack) {
199                 g_vertices[0].u++;
200                 g_vertices[0].x++;
201                 g_vertices[1].u--;
202                 g_vertices[1].x--;
203         }
204         fbimg_offs = (fbimg_yoffs*512 + fbimg_xoffs) * 2; // dst is always 16bit
205
206         /*
207         lprintf("set_scaling_params:\n");
208         lprintf("offs: %i, %i\n", fbimg_xoffs, fbimg_yoffs);
209         lprintf("xy0, xy1: %i, %i; %i, %i\n", g_vertices[0].x, g_vertices[0].y, g_vertices[1].x, g_vertices[1].y);
210         lprintf("uv0, uv1: %i, %i; %i, %i\n", g_vertices[0].u, g_vertices[0].v, g_vertices[1].u, g_vertices[1].v);
211         */
212 }
213
214 static void do_pal_update(int allow_sh, int allow_as)
215 {
216         unsigned int *dpal=(void *)localPal;
217         int i;
218
219         //for (i = 0x3f/2; i >= 0; i--)
220         //      dpal[i] = ((spal[i]&0x000f000f)<< 1)|((spal[i]&0x00f000f0)<<3)|((spal[i]&0x0f000f00)<<4);
221         do_pal_convert(localPal, Pico.cram, currentConfig.gamma, currentConfig.gamma2);
222
223         Pico.m.dirtyPal = 0;
224         need_pal_upload = 1;
225
226         if (allow_sh && (Pico.video.reg[0xC]&8)) // shadow/hilight?
227         {
228                 // shadowed pixels
229                 for (i = 0x3f/2; i >= 0; i--)
230                         dpal[0x20|i] = dpal[0x60|i] = (dpal[i]>>1)&0x7bcf7bcf;
231                 // hilighted pixels
232                 for (i = 0x3f; i >= 0; i--) {
233                         int t=localPal[i]&0xf79e;t+=0x4208;
234                         if (t&0x20) t|=0x1e;
235                         if (t&0x800) t|=0x780;
236                         if (t&0x10000) t|=0xf000;
237                         t&=0xf79e;
238                         localPal[0x80|i]=(unsigned short)t;
239                 }
240                 localPal[0xe0] = 0;
241                 localPal[0xf0] = 0x001f;
242         }
243         else if (allow_as && (rendstatus & PDRAW_SPR_LO_ON_HI))
244         {
245                 memcpy32((int *)dpal+0x80/2, (void *)localPal, 0x40*2/4);
246         }
247 }
248
249 static void do_slowmode_lines(int line_to)
250 {
251         int line = 0, line_len = (Pico.video.reg[12]&1) ? 320 : 256;
252         unsigned short *dst = (unsigned short *)VRAM_STUFF + 512*240/2;
253         unsigned char  *src = (unsigned char  *)VRAM_CACHED_STUFF + 16;
254         if (!(Pico.video.reg[1]&8)) { line = 8; dst += 512*8; src += 512*8; }
255
256         for (; line < line_to; line++, dst+=512, src+=512)
257                 amips_clut_f(dst, src, localPal, line_len);
258 }
259
260 static void EmuScanPrepare(void)
261 {
262         HighCol = (unsigned char *)VRAM_CACHED_STUFF + 8;
263         if (!(Pico.video.reg[1]&8)) HighCol += 8*512;
264
265         if (dynamic_palette > 0)
266                 dynamic_palette--;
267
268         if (Pico.m.dirtyPal)
269                 do_pal_update(1, 1);
270         if ((rendstatus & PDRAW_SPR_LO_ON_HI) && !(Pico.video.reg[0xC]&8))
271              amips_clut_f = amips_clut_6bit;
272         else amips_clut_f = amips_clut;
273 }
274
275 static int EmuScanSlowBegin(unsigned int num)
276 {
277         if (!(Pico.video.reg[1]&8)) num += 8;
278
279         if (!dynamic_palette)
280                 HighCol = (unsigned char *)VRAM_CACHED_STUFF + num * 512 + 8;
281
282         return 0;
283 }
284
285 static int EmuScanSlowEnd(unsigned int num)
286 {
287         if (!(Pico.video.reg[1]&8)) num += 8;
288
289         if (Pico.m.dirtyPal) {
290                 if (!dynamic_palette) {
291                         do_slowmode_lines(num);
292                         dynamic_palette = 3; // last for 2 more frames
293                 }
294                 do_pal_update(1, 1);
295         }
296
297         if (dynamic_palette) {
298                 int line_len = (Pico.video.reg[12]&1) ? 320 : 256;
299                 void *dst = (char *)VRAM_STUFF + 512*240 + 512*2*num;
300                 amips_clut_f(dst, HighCol + 8, localPal, line_len);
301         }
302
303         return 0;
304 }
305
306 static void blitscreen_clut(void)
307 {
308         int offs = fbimg_offs;
309         offs += (psp_screen == VRAM_FB0) ? VRAMOFFS_FB0 : VRAMOFFS_FB1;
310
311         sceGuSync(0,0); // sync with prev
312         sceGuStart(GU_DIRECT, guCmdList);
313         sceGuDrawBuffer(GU_PSM_5650, (void *)offs, 512); // point to back buffer
314
315         if (dynamic_palette)
316         {
317                 if (!blit_16bit_mode) { // the current mode is not 16bit
318                         sceGuTexMode(GU_PSM_5650, 0, 0, 0);
319                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 512*240);
320
321                         blit_16bit_mode = 1;
322                 }
323         }
324         else
325         {
326                 if (blit_16bit_mode) {
327                         sceGuClutMode(GU_PSM_5650,0,0xff,0);
328                         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
329                         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
330                         blit_16bit_mode = 0;
331                 }
332
333                 if ((PicoOpt&0x10) && Pico.m.dirtyPal)
334                         do_pal_update(0, 0);
335
336                 sceKernelDcacheWritebackAll();
337
338                 if (need_pal_upload) {
339                         need_pal_upload = 0;
340                         sceGuClutLoad((256/8), localPal); // upload 32*8 entries (256)
341                 }
342         }
343
344 #if 1
345         if (g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x)
346         {
347                 struct Vertex* vertices;
348                 int x;
349
350                 #define SLICE_WIDTH 32
351                 for (x = 0; x < g_vertices[1].x; x += SLICE_WIDTH)
352                 {
353                         // render sprite
354                         vertices = (struct Vertex*)sceGuGetMemory(2 * sizeof(struct Vertex));
355                         memcpy(vertices, g_vertices, 2 * sizeof(struct Vertex));
356                         vertices[0].u = vertices[0].x = x;
357                         vertices[1].u = vertices[1].x = x + SLICE_WIDTH;
358                         sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,vertices);
359                 }
360                 // lprintf("listlen: %iB\n", sceGuCheckList()); // ~480 only
361         }
362         else
363 #endif
364                 sceGuDrawArray(GU_SPRITES,GU_TEXTURE_16BIT|GU_VERTEX_16BIT|GU_TRANSFORM_2D,2,0,g_vertices);
365
366         sceGuFinish();
367 }
368
369
370 static void cd_leds(void)
371 {
372         unsigned int reg, col_g, col_r, *p;
373
374         reg = Pico_mcd->s68k_regs[0];
375
376         p = (unsigned int *)((short *)psp_screen + 512*2+4+2);
377         col_g = (reg & 2) ? 0x06000600 : 0;
378         col_r = (reg & 1) ? 0x00180018 : 0;
379         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
380         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 512/2 - 12/2;
381         *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;
382 }
383
384 static void draw_pico_ptr(void)
385 {
386         unsigned char *p = (unsigned char *)VRAM_STUFF + 16;
387
388         // only if pen enabled and for 8bit mode
389         if (pico_inp_mode == 0 || blit_16bit_mode) return;
390
391         p += 512 * (pico_pen_y + PICO_PEN_ADJUST_Y);
392         p += pico_pen_x + PICO_PEN_ADJUST_X;
393         p[  -1] = 0xe0; p[   0] = 0xf0; p[   1] = 0xe0;
394         p[ 511] = 0xf0; p[ 512] = 0xf0; p[ 513] = 0xf0;
395         p[1023] = 0xe0; p[1024] = 0xf0; p[1025] = 0xe0;
396 }
397
398
399 #if 0
400 static void dbg_text(void)
401 {
402         int *p, h, len;
403         char text[128];
404
405         sprintf(text, "sl: %i, 16b: %i", g_vertices[0].u == 0 && g_vertices[1].u == g_vertices[1].x, blit_16bit_mode);
406         len = strlen(text) * 8 / 2;
407         for (h = 0; h < 8; h++) {
408                 p = (int *) ((unsigned short *) psp_screen+2+512*(256+h));
409                 p = (int *) ((int)p & ~3); // align
410                 memset32_uncached(p, 0, len);
411         }
412         emu_text_out16(2, 256, text);
413 }
414 #endif
415
416 /* called after rendering is done, but frame emulation is not finished */
417 void blit1(void)
418 {
419         if (PicoOpt&0x10)
420         {
421                 int i;
422                 unsigned char *pd;
423                 // clear top and bottom trash
424                 for (pd = PicoDraw2FB+8, i = 8; i > 0; i--, pd += 512)
425                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
426                 for (pd = PicoDraw2FB+512*232+8, i = 8; i > 0; i--, pd += 512)
427                         memset32((int *)pd, 0xe0e0e0e0, 320/4);
428         }
429
430         if (PicoAHW & PAHW_PICO)
431                 draw_pico_ptr();
432
433         blitscreen_clut();
434 }
435
436
437 static void blit2(const char *fps, const char *notice, int lagging_behind)
438 {
439         int vsync = 0, emu_opt = currentConfig.EmuOpt;
440
441         if (notice || (emu_opt & 2)) {
442                 if (notice)      osd_text(4, notice, 0, 0);
443                 if (emu_opt & 2) osd_text(OSD_FPS_X, fps, 0, 0);
444         }
445
446         //dbg_text();
447
448         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))
449                 cd_leds();
450
451         if (currentConfig.EmuOpt & 0x2000) { // want vsync
452                 if (!(currentConfig.EmuOpt & 0x10000) || !lagging_behind) vsync = 1;
453         }
454
455         psp_video_flip(vsync);
456 }
457
458 // clears whole screen or just the notice area (in all buffers)
459 static void clearArea(int full)
460 {
461         if (full) {
462                 memset32_uncached(psp_screen, 0, 512*272*2/4);
463                 psp_video_flip(0);
464                 memset32_uncached(psp_screen, 0, 512*272*2/4);
465                 memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*240/4);
466                 memset32((int *)VRAM_CACHED_STUFF+512*240/4, 0, 512*240*2/4);
467         } else {
468                 void *fb = psp_video_get_active_fb();
469                 memset32_uncached((int *)((char *)psp_screen + 512*264*2), 0, 512*8*2/4);
470                 memset32_uncached((int *)((char *)fb         + 512*264*2), 0, 512*8*2/4);
471         }
472 }
473
474 static void vidResetMode(void)
475 {
476         // setup GU
477         sceGuSync(0,0); // sync with prev
478         sceGuStart(GU_DIRECT, guCmdList);
479
480         sceGuClutMode(GU_PSM_5650,0,0xff,0);
481         sceGuTexMode(GU_PSM_T8,0,0,0); // 8-bit image
482         sceGuTexFunc(GU_TFX_REPLACE,GU_TCC_RGB);
483         if (currentConfig.scaling)
484              sceGuTexFilter(GU_LINEAR, GU_LINEAR);
485         else sceGuTexFilter(GU_NEAREST, GU_NEAREST);
486         sceGuTexScale(1.0f,1.0f);
487         sceGuTexOffset(0.0f,0.0f);
488
489         sceGuTexImage(0,512,512,512,(char *)VRAM_STUFF + 16);
490
491         // slow rend.
492         PicoDrawSetColorFormat(-1);
493         PicoScanBegin = EmuScanSlowBegin;
494         PicoScanEnd = EmuScanSlowEnd;
495
496         localPal[0xe0] = 0;
497         localPal[0xf0] = 0x001f;
498         Pico.m.dirtyPal = 1;
499         blit_16bit_mode = dynamic_palette = 0;
500
501         sceGuFinish();
502         set_scaling_params();
503         sceGuSync(0,0);
504 }
505
506 void plat_debug_cat(char *str)
507 {
508         strcat(str, blit_16bit_mode ? "soft clut\n" : "hard clut\n");
509 }
510
511
512 /* sound stuff */
513 #define SOUND_BLOCK_SIZE_NTSC (1470*2) // 1024 // 1152
514 #define SOUND_BLOCK_SIZE_PAL  (1764*2)
515 #define SOUND_BLOCK_COUNT    8
516
517 static short __attribute__((aligned(4))) sndBuffer[SOUND_BLOCK_SIZE_PAL*SOUND_BLOCK_COUNT + 44100/50*2];
518 static short *snd_playptr = NULL, *sndBuffer_endptr = NULL;
519 static int samples_made = 0, samples_done = 0, samples_block = 0;
520 static int sound_thread_exit = 0;
521 static SceUID sound_sem = -1;
522
523 static void writeSound(int len);
524
525 static int sound_thread(SceSize args, void *argp)
526 {
527         int ret = 0;
528
529         lprintf("sthr: started, priority %i\n", sceKernelGetThreadCurrentPriority());
530
531         while (!sound_thread_exit)
532         {
533                 if (samples_made - samples_done < samples_block) {
534                         // wait for data (use at least 2 blocks)
535                         //lprintf("sthr: wait... (%i)\n", samples_made - samples_done);
536                         while (samples_made - samples_done <= samples_block*2 && !sound_thread_exit)
537                                 ret = sceKernelWaitSema(sound_sem, 1, 0);
538                         if (ret < 0) lprintf("sthr: sceKernelWaitSema: %i\n", ret);
539                         continue;
540                 }
541
542                 // lprintf("sthr: got data: %i\n", samples_made - samples_done);
543
544                 ret = sceAudio_E0727056(PSP_AUDIO_VOLUME_MAX, snd_playptr);
545
546                 samples_done += samples_block;
547                 snd_playptr  += samples_block;
548                 if (snd_playptr >= sndBuffer_endptr)
549                         snd_playptr = sndBuffer;
550                 // 1.5 kernel returns 0, newer ones return # of samples queued
551                 if (ret < 0)
552                         lprintf("sthr: sceAudio_E0727056: %08x; pos %i/%i\n", ret, samples_done, samples_made);
553
554                 // shouln't happen, but just in case
555                 if (samples_made - samples_done >= samples_block*3) {
556                         //lprintf("sthr: block skip (%i)\n", samples_made - samples_done);
557                         samples_done += samples_block; // skip
558                         snd_playptr  += samples_block;
559                 }
560
561         }
562
563         lprintf("sthr: exit\n");
564         sceKernelExitDeleteThread(0);
565         return 0;
566 }
567
568 static void sound_init(void)
569 {
570         SceUID thid;
571         int ret;
572
573         sound_sem = sceKernelCreateSema("sndsem", 0, 0, 1, NULL);
574         if (sound_sem < 0) lprintf("sceKernelCreateSema() failed: %i\n", sound_sem);
575
576         samples_made = samples_done = 0;
577         samples_block = SOUND_BLOCK_SIZE_NTSC; // make sure it goes to sema
578         sound_thread_exit = 0;
579         thid = sceKernelCreateThread("sndthread", sound_thread, 0x12, 0x10000, 0, NULL);
580         if (thid >= 0)
581         {
582                 ret = sceKernelStartThread(thid, 0, 0);
583                 if (ret < 0) lprintf("sound_init: sceKernelStartThread returned %08x\n", ret);
584         }
585         else
586                 lprintf("sceKernelCreateThread failed: %i\n", thid);
587 }
588
589 void pemu_sound_start(void)
590 {
591         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;
592         int ret, stereo;
593
594         samples_made = samples_done = 0;
595
596         if (PsndRate != PsndRate_old || (PicoOpt&0x0b) != (PicoOpt_old&0x0b) || Pico.m.pal != pal_old) {
597                 PsndRerate(Pico.m.frame_count ? 1 : 0);
598         }
599         stereo=(PicoOpt&8)>>3;
600
601         samples_block = Pico.m.pal ? SOUND_BLOCK_SIZE_PAL : SOUND_BLOCK_SIZE_NTSC;
602         if (PsndRate <= 22050) samples_block /= 2;
603         sndBuffer_endptr = &sndBuffer[samples_block*SOUND_BLOCK_COUNT];
604
605         lprintf("starting audio: %i, len: %i, stereo: %i, pal: %i, block samples: %i\n",
606                         PsndRate, PsndLen, stereo, Pico.m.pal, samples_block);
607
608         // while (sceAudioOutput2GetRestSample() > 0) psp_msleep(100);
609         // sceAudio_5C37C0AE();
610         ret = sceAudio_38553111(samples_block/2, PsndRate, 2); // seems to not need that stupid 64byte alignment
611         if (ret < 0) {
612                 lprintf("sceAudio_38553111() failed: %i\n", ret);
613                 plat_status_msg("sound init failed (%i), snd disabled", ret);
614                 currentConfig.EmuOpt &= ~EOPT_EN_SOUND;
615         } else {
616                 PicoWriteSound = writeSound;
617                 memset32((int *)(void *)sndBuffer, 0, sizeof(sndBuffer)/4);
618                 snd_playptr = sndBuffer_endptr - samples_block;
619                 samples_made = samples_block; // send 1 empty block first..
620                 PsndOut = sndBuffer;
621                 PsndRate_old = PsndRate;
622                 PicoOpt_old  = PicoOpt;
623                 pal_old = Pico.m.pal;
624         }
625 }
626
627 void pemu_sound_stop(void)
628 {
629         int i;
630         if (samples_done == 0)
631         {
632                 // if no data is written between sceAudio_38553111 and sceAudio_5C37C0AE calls,
633                 // we get a deadlock on next sceAudio_38553111 call
634                 // so this is yet another workaround:
635                 memset32((int *)(void *)sndBuffer, 0, samples_block*4/4);
636                 samples_made = samples_block * 3;
637                 sceKernelSignalSema(sound_sem, 1);
638         }
639         sceKernelDelayThread(100*1000);
640         samples_made = samples_done = 0;
641         for (i = 0; sceAudioOutput2GetRestSample() > 0 && i < 16; i++)
642                 psp_msleep(100);
643         sceAudio_5C37C0AE();
644 }
645
646 /* wait until we can write more sound */
647 void pemu_sound_wait(void)
648 {
649         // TODO: test this
650         while (!sound_thread_exit && samples_made - samples_done > samples_block * 4)
651                 psp_msleep(10);
652 }
653
654 static void sound_deinit(void)
655 {
656         sound_thread_exit = 1;
657         sceKernelSignalSema(sound_sem, 1);
658         sceKernelDeleteSema(sound_sem);
659         sound_sem = -1;
660 }
661
662 static void writeSound(int len)
663 {
664         int ret;
665         if (PicoOpt&8) len<<=1;
666
667         PsndOut += len;
668         /*if (PsndOut > sndBuffer_endptr) {
669                 memcpy32((int *)(void *)sndBuffer, (int *)endptr, (PsndOut - endptr + 1) / 2);
670                 PsndOut = &sndBuffer[PsndOut - endptr];
671                 lprintf("mov\n");
672         }
673         else*/
674         if (PsndOut > sndBuffer_endptr) lprintf("snd oflow %i!\n", PsndOut - sndBuffer_endptr);
675         if (PsndOut >= sndBuffer_endptr)
676                 PsndOut = sndBuffer;
677
678         // signal the snd thread
679         samples_made += len;
680         if (samples_made - samples_done > samples_block*2) {
681                 // lprintf("signal, %i/%i\n", samples_done, samples_made);
682                 ret = sceKernelSignalSema(sound_sem, 1);
683                 //if (ret < 0) lprintf("snd signal ret %08x\n", ret);
684         }
685 }
686
687
688 static void SkipFrame(void)
689 {
690         PicoSkipFrame=1;
691         PicoFrame();
692         PicoSkipFrame=0;
693 }
694
695 void pemu_forced_frame(int opts)
696 {
697         int po_old = PicoOpt;
698         int eo_old = currentConfig.EmuOpt;
699
700         PicoOpt &= ~0x10;
701         PicoOpt |= opts|POPT_ACC_SPRITES;
702         currentConfig.EmuOpt |= 0x80;
703
704         vidResetMode();
705         memset32(VRAM_CACHED_STUFF, 0xe0e0e0e0, 512*8/4); // borders
706         memset32((int *)VRAM_CACHED_STUFF + 512*232/4, 0xe0e0e0e0, 512*8/4);
707         memset32_uncached((int *)psp_screen + 512*264*2/4, 0, 512*8*2/4);
708
709         PicoDrawSetColorFormat(-1);
710         PicoScanBegin = EmuScanSlowBegin;
711         PicoScanEnd = EmuScanSlowEnd;
712         EmuScanPrepare();
713         PicoFrameDrawOnly();
714         blit1();
715         sceGuSync(0,0);
716
717         PicoOpt = po_old;
718         currentConfig.EmuOpt = eo_old;
719 }
720
721
722 static void RunEventsPico(unsigned int events, unsigned int keys)
723 {
724         emu_RunEventsPico(events);
725
726         if (pico_inp_mode != 0)
727         {
728                 PicoPad[0] &= ~0x0f; // release UDLR
729                 if (keys & PBTN_UP)   { pico_pen_y--; if (pico_pen_y < 8) pico_pen_y = 8; }
730                 if (keys & PBTN_DOWN) { pico_pen_y++; if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y; }
731                 if (keys & PBTN_LEFT) { pico_pen_x--; if (pico_pen_x < 0) pico_pen_x = 0; }
732                 if (keys & PBTN_RIGHT) {
733                         int lim = (Pico.video.reg[12]&1) ? 319 : 255;
734                         pico_pen_x++;
735                         if (pico_pen_x > lim-PICO_PEN_ADJUST_X)
736                                 pico_pen_x = lim-PICO_PEN_ADJUST_X;
737                 }
738                 PicoPicohw.pen_pos[0] = pico_pen_x;
739                 if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;
740                 PicoPicohw.pen_pos[0] += 0x3c;
741                 PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);
742         }
743 }
744
745 static void RunEvents(unsigned int which)
746 {
747         if (which & 0x1800) // save or load (but not both)
748         {
749                 int do_it = 1;
750
751                 if ( emu_check_save_file(state_slot) &&
752                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load
753                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save
754                 {
755                         int keys;
756                         sceGuSync(0,0);
757                         blit2("", (which & 0x1000) ? "LOAD STATE? (X=yes, O=no)" : "OVERWRITE SAVE? (X=yes, O=no)", 0);
758                         while( !((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) )
759                                 psp_msleep(50);
760                         if (keys & PBTN_CIRCLE) do_it = 0;
761                         while(  ((keys = psp_pad_read(1)) & (PBTN_X|PBTN_CIRCLE)) ) // wait for release
762                                 psp_msleep(50);
763                         clearArea(0);
764                 }
765
766                 if (do_it)
767                 {
768                         osd_text(4, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME", 1, 0);
769                         PicoStateProgressCB = emu_msg_cb;
770                         emu_save_load_game((which & 0x1000) >> 12, 0);
771                         PicoStateProgressCB = NULL;
772                         psp_msleep(0);
773                 }
774
775                 reset_timing = 1;
776         }
777         if (which & 0x0400) // switch renderer
778         {
779                 if (PicoOpt&0x10) { PicoOpt&=~0x10; currentConfig.EmuOpt |=  0x80; }
780                 else              { PicoOpt|= 0x10; currentConfig.EmuOpt &= ~0x80; }
781
782                 vidResetMode();
783
784                 if (PicoOpt & POPT_ALT_RENDERER)
785                         plat_status_msg("fast renderer");
786                 else if (currentConfig.EmuOpt&0x80)
787                         plat_status_msg("accurate renderer");
788         }
789         if (which & 0x0300)
790         {
791                 if(which&0x0200) {
792                         state_slot -= 1;
793                         if(state_slot < 0) state_slot = 9;
794                 } else {
795                         state_slot += 1;
796                         if(state_slot > 9) state_slot = 0;
797                 }
798                 plat_status_msg("SAVE SLOT %i [%s]", state_slot,
799                         emu_check_save_file(state_slot) ? "USED" : "FREE");
800         }
801 }
802
803 static void updateKeys(void)
804 {
805         unsigned int keys, allActions[2] = { 0, 0 }, events;
806         static unsigned int prevEvents = 0;
807         int i;
808
809         /* FIXME: port to input fw, merge with emu.c:emu_update_input() */
810         keys = psp_pad_read(0);
811         if (keys & PSP_CTRL_HOME)
812                 sceDisplayWaitVblankStart();
813
814         if (keys & PBTN_SELECT)
815                 engineState = PGS_Menu;
816
817         keys &= CONFIGURABLE_KEYS;
818
819         PicoPad[0] = allActions[0] & 0xfff;
820         PicoPad[1] = allActions[1] & 0xfff;
821
822         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);
823         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);
824
825         events = (allActions[0] | allActions[1]) >> 16;
826
827         if ((events ^ prevEvents) & 0x40) {
828                 emu_set_fastforward(events & 0x40);
829                 reset_timing = 1;
830         }
831
832         events &= ~prevEvents;
833
834         if (PicoAHW == PAHW_PICO)
835                 RunEventsPico(events, keys);
836         if (events) RunEvents(events);
837         if (movie_data) emu_updateMovie();
838
839         prevEvents = (allActions[0] | allActions[1]) >> 16;
840 }
841
842
843 static void simpleWait(unsigned int until)
844 {
845         unsigned int tval;
846         int diff;
847
848         tval = sceKernelGetSystemTimeLow();
849         diff = (int)until - (int)tval;
850         if (diff >= 512 && diff < 100*1024)
851                 sceKernelDelayThread(diff);
852 }
853
854 void pemu_loop(void)
855 {
856         static int mp3_init_done = 0;
857         char fpsbuff[24]; // fps count c string
858         unsigned int tval, tval_thissec = 0; // timing
859         int target_fps, target_frametime, lim_time, tval_diff, i, oldmodes = 0;
860         int pframes_done, pframes_shown; // "period" frames, used for sync
861         int  frames_done,  frames_shown, tval_fpsc = 0; // actual frames
862         char *notice = NULL;
863
864         lprintf("entered emu_Loop()\n");
865
866         fpsbuff[0] = 0;
867
868         if (currentConfig.CPUclock != psp_get_cpu_clock()) {
869                 lprintf("setting cpu clock to %iMHz... ", currentConfig.CPUclock);
870                 i = psp_set_cpu_clock(currentConfig.CPUclock);
871                 lprintf(i ? "failed\n" : "done\n");
872                 currentConfig.CPUclock = psp_get_cpu_clock();
873         }
874
875         // make sure we are in correct mode
876         vidResetMode();
877         clearArea(1);
878         Pico.m.dirtyPal = 1;
879         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;
880
881         // pal/ntsc might have changed, reset related stuff
882         target_fps = Pico.m.pal ? 50 : 60;
883         target_frametime = Pico.m.pal ? (1000000<<8)/50 : (1000000<<8)/60+1;
884         reset_timing = 1;
885
886         if (PicoAHW & PAHW_MCD) {
887                 // prepare CD buffer
888                 PicoCDBufferInit();
889                 // mp3...
890                 if (!mp3_init_done) {
891                         i = mp3_init();
892                         mp3_init_done = 1;
893                         if (i) { engineState = PGS_Menu; return; }
894                 }
895         }
896
897         // prepare sound stuff
898         PsndOut = NULL;
899         if (currentConfig.EmuOpt & EOPT_EN_SOUND)
900         {
901                 pemu_sound_start();
902         }
903
904         sceDisplayWaitVblankStart();
905         pframes_shown = pframes_done =
906          frames_shown =  frames_done = 0;
907
908         tval_fpsc = sceKernelGetSystemTimeLow();
909
910         // loop?
911         while (engineState == PGS_Running)
912         {
913                 int modes;
914
915                 tval = sceKernelGetSystemTimeLow();
916                 if (reset_timing || tval < tval_fpsc) {
917                         //stdbg("timing reset");
918                         reset_timing = 0;
919                         tval_thissec = tval;
920                         pframes_shown = pframes_done = 0;
921                 }
922
923                 // show notice message?
924                 if (noticeMsgTime) {
925                         static int noticeMsgSum;
926                         if (tval - noticeMsgTime > 2000000) { // > 2.0 sec
927                                 noticeMsgTime = 0;
928                                 clearArea(0);
929                                 notice = 0;
930                         } else {
931                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];
932                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }
933                                 notice = noticeMsg;
934                         }
935                 }
936
937                 // check for mode changes
938                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);
939                 if (modes != oldmodes) {
940                         oldmodes = modes;
941                         clearArea(1);
942                         set_scaling_params();
943                 }
944
945                 // second passed?
946                 if (tval - tval_fpsc >= 1000000)
947                 {
948                         if (currentConfig.EmuOpt & 2)
949                                 sprintf(fpsbuff, "%02i/%02i  ", frames_shown, frames_done);
950                         frames_done = frames_shown = 0;
951                         tval_fpsc += 1000000;
952                 }
953
954                 if (tval - tval_thissec >= 1000000)
955                 {
956                         // missing 1 frame?
957                         if (currentConfig.Frameskip < 0 && pframes_done < target_fps) {
958                                 SkipFrame(); pframes_done++; frames_done++;
959                         }
960
961                         tval_thissec += 1000000;
962
963                         if (currentConfig.Frameskip < 0) {
964                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;
965                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;
966                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;
967                         } else {
968                                 pframes_done = pframes_shown = 0;
969                         }
970                 }
971 #ifdef PFRAMES
972                 sprintf(fpsbuff, "%i", Pico.m.frame_count);
973 #endif
974
975                 lim_time = (pframes_done+1) * target_frametime;
976                 if (currentConfig.Frameskip >= 0) // frameskip enabled
977                 {
978                         for (i = 0; i < currentConfig.Frameskip; i++) {
979                                 updateKeys();
980                                 SkipFrame(); pframes_done++; frames_done++;
981                                 if (!(currentConfig.EmuOpt&0x40000)) { // do framelimitting if needed
982                                         int tval_diff;
983                                         tval = sceKernelGetSystemTimeLow();
984                                         tval_diff = (int)(tval - tval_thissec) << 8;
985                                         if (tval_diff < lim_time) // we are too fast
986                                                 simpleWait(tval + ((lim_time - tval_diff)>>8));
987                                 }
988                                 lim_time += target_frametime;
989                         }
990                 }
991                 else // auto frameskip
992                 {
993                         int tval_diff;
994                         tval = sceKernelGetSystemTimeLow();
995                         tval_diff = (int)(tval - tval_thissec) << 8;
996                         if (tval_diff > lim_time && (pframes_done/16 < pframes_shown))
997                         {
998                                 // no time left for this frame - skip
999                                 if (tval_diff - lim_time >= (300000<<8)) {
1000                                         reset_timing = 1;
1001                                         continue;
1002                                 }
1003                                 updateKeys();
1004                                 SkipFrame(); pframes_done++; frames_done++;
1005                                 continue;
1006                         }
1007                 }
1008
1009                 updateKeys();
1010
1011                 if (!(PicoOpt&0x10))
1012                         EmuScanPrepare();
1013
1014                 PicoFrame();
1015
1016                 sceGuSync(0,0);
1017
1018                 // check time
1019                 tval = sceKernelGetSystemTimeLow();
1020                 tval_diff = (int)(tval - tval_thissec) << 8;
1021
1022                 blit2(fpsbuff, notice, tval_diff > lim_time);
1023
1024                 if (currentConfig.Frameskip < 0 && tval_diff - lim_time >= (300000<<8)) { // slowdown detection
1025                         reset_timing = 1;
1026                 }
1027                 else if (!(currentConfig.EmuOpt&0x40000) || currentConfig.Frameskip < 0)
1028                 {
1029                         // sleep if we are still too fast
1030                         if (tval_diff < lim_time)
1031                         {
1032                                 // we are too fast
1033                                 simpleWait(tval + ((lim_time - tval_diff) >> 8));
1034                         }
1035                 }
1036
1037                 pframes_done++; pframes_shown++;
1038                  frames_done++;  frames_shown++;
1039         }
1040
1041
1042         emu_set_fastforward(0);
1043
1044         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();
1045
1046         if (PsndOut != NULL) {
1047                 pemu_sound_stop();
1048                 PsndOut = NULL;
1049         }
1050
1051         // save SRAM
1052         if ((currentConfig.EmuOpt & 1) && SRam.changed) {
1053                 emu_msg_cb("Writing SRAM/BRAM..");
1054                 emu_save_load_game(0, 1);
1055                 SRam.changed = 0;
1056         }
1057
1058         // clear fps counters and stuff
1059         memset32_uncached((int *)psp_video_get_active_fb() + 512*264*2/4, 0, 512*8*2/4);
1060 }
1061
1062 void emu_HandleResume(void)
1063 {
1064         if (!(PicoAHW & PAHW_MCD)) return;
1065
1066         // reopen first CD track
1067         if (Pico_mcd->TOC.Tracks[0].F != NULL)
1068         {
1069                 char *fname = rom_fname_reload;
1070                 int len = strlen(rom_fname_reload);
1071                 cue_data_t *cue_data = NULL;
1072
1073                 if (len > 4 && strcasecmp(fname + len - 4,  ".cue") == 0)
1074                 {
1075                         cue_data = cue_parse(rom_fname_reload);
1076                         if (cue_data != NULL)
1077                                 fname = cue_data->tracks[1].fname;
1078                 }
1079
1080                 lprintf("emu_HandleResume: reopen %s\n", fname);
1081                 pm_close(Pico_mcd->TOC.Tracks[0].F);
1082                 Pico_mcd->TOC.Tracks[0].F = pm_open(fname);
1083                 lprintf("reopen %s\n", Pico_mcd->TOC.Tracks[0].F != NULL ? "ok" : "failed");
1084
1085                 if (cue_data != NULL) cue_destroy(cue_data);
1086         }
1087
1088         mp3_reopen_file();
1089
1090         if (!(Pico_mcd->s68k_regs[0x36] & 1) && (Pico_mcd->scd.Status_CDC & 1))
1091                 cdda_start_play();
1092 }
1093