X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?p=fceu.git;a=blobdiff_plain;f=drivers%2Fpc%2Fminimal.c;fp=drivers%2Fpc%2Fminimal.c;h=0000000000000000000000000000000000000000;hp=193fa9e2f32625511b0b6cbbcde2430697c07bfa;hb=9a079c3760813dd9715edab1c7ebc5d43b385bef;hpb=35868d35201adb0e4066584d1145c920f5be9b03 diff --git a/drivers/pc/minimal.c b/drivers/pc/minimal.c deleted file mode 100644 index 193fa9e..0000000 --- a/drivers/pc/minimal.c +++ /dev/null @@ -1,476 +0,0 @@ -/* - GP2X minimal library v0.A by rlyeh, 2005. emulnation.info@rlyeh (swap it!) - - + GP2X 920t/940t CPUs library with a FIFO message system. - + GP2X video library with double buffering. - + GP2X sound library with double buffering. - + GP2X blitter library. - + GP2X timer library. - + GP2X joystick library. - - Thanks to Squidge, Robster, snaff, Reesy and NK, for the help & previous work! :-) - - - License - ======= - - Free for non-commercial projects (it would be nice receiving a mail from you). - Other cases, ask me first. - - GamePark Holdings is not allowed to use this library and/or use parts from it. - - - Known projects using the library or parts from it - ================================================= - - REminiscence-0.1.8 (rlyeh) - Atari800 GP2X pre-release 3 (foft) - XUMP (kedo) - MAME2X (Franxis) - DrMD for GP2X (Reesy) - - - What's new - ========== - - 0.A: 940t disabled all time unless required - sound is paused by default now, use gp2x_sound_pause() to unlock it - - fixed functions: - - gp2x_sound_play() ; increased the number of sampling buffers - - gp2x_timer_read() ; it should work again. broken at some point before - - gp2x_dualcore_launch_program_from_disk() ; it missed the code uploading call - - added functions: - - gp2x_sound_pause() - - gp2x_timer_delay() - - gp2x_dualcore_pause() - - 0.9: initial FIFO message system for dual cpu cores. - initial 48 Mb support. - initial quadruple buffering in 8bbp mode. - - added functions: - - gp2x_dualcore_exec() ; initial FIFO message system for dual cpu cores. - - gp2x_dualcore_sync() ; initial FIFO message system for dual cpu cores. - - improved functions: - - gp2x_video_flip() ; initial quadruple buffering in 8bbp mode. - - 0.8: initial dual cores cpu support. - very basic blit functions by popular demand ;-) - vsync & hsync waiting code (thanks Reesy) - - added functions: - - gp2x_launch_program() ; initial dual cores cpu support. - - gp2x_launch_program_from_disk() ; initial dual cores cpu support. - - gp2x_launch_subprogram() ; initial dual cores cpu support. - - gp2x_blitter_rect15() ; very basic blit function by popular demand ;-) - - gp2x_blitter_rect8() ; very basic blit function by popular demand ;-) - - gp2x_video_hsync() ; hsync waiting code (thanks Reesy) - - gp2x_video_vsync() ; vsync waiting code (thanks Reesy) - - fixed functions: - - gp2x_video_color8() ; bugfixed a stupid typo (thanks Franxis for the bug report) - - 0.7: added functions: - - gp2x_sound_volume() - - fixed functions: - - gp2x_deinit() ; fixed menu launch code when exiting. - - improved functions: - - gp2x_timer_read() ; rewritten timer. it should be more accurate now. - - gp2x_init() ; faster init code. - - 0.6: added functions: - - gp2x_timer_read() - - gp2x_sound_pause() - - fixed functions: - - gp2x_video_setpalette() ; palette handling was incorrect. fixed. - - 0.5: improved functions: - - gp2x_init() ; better and cleaner initalizing code. - - gp2x_init() ; sound patched for real stereo output (by using NK's solution) - - 0.4: lots of cleanups. - sound is threaded and double buffered now. - 8 bpp video support. - - fixed functions: - - gp2x_deinit() ; better and cleaner exiting code. - - 0.3: shorter library. - - fixed functions: - - gp2x_joystick_read() ; improved joystick diagonal detection. - - 0.2: better code layout. - public release. - - 0.1: beta release. -*/ - -#include "minimal.h" - - unsigned char *gp2x_screen8 ,*gp2x_upperRAM; - unsigned long gp2x_dev[8]={0,0,0,0,0,0,0,0}, gp2x_physvram[8], *gp2x_memregl, gp2x_volume, gp2x_ticks_per_second; -volatile unsigned long gp2x_sound_pausei=1, gp2x_ticks=0, gp2x_sound=0, *gp2x_dualcore_ram; - unsigned short *gp2x_memregs, *gp2x_screen15, *gp2x_logvram15[4], gp2x_sound_buffer[4+((44100/25)*2)*8]; //25 Hz gives our biggest supported sampling buffer -volatile unsigned short gp2x_palette[512]; - pthread_t gp2x_sound_thread=0; - -extern void gp2x_sound_frame(void *blah, void *buff, int samples); - - -void gp2x_video_flip(void) -{ - unsigned long address=gp2x_physvram[gp2x_physvram[7]]; - - if(++gp2x_physvram[7]==4) gp2x_physvram[7]=0; - gp2x_screen15=gp2x_logvram15[gp2x_physvram[7]]; - gp2x_screen8=(unsigned char *)gp2x_screen15; - - gp2x_memregs[0x290E>>1]=(unsigned short)(address & 0xFFFF); - gp2x_memregs[0x2910>>1]=(unsigned short)(address >> 16); - gp2x_memregs[0x2912>>1]=(unsigned short)(address & 0xFFFF); - gp2x_memregs[0x2914>>1]=(unsigned short)(address >> 16); -} - -void gp2x_video_flip_single(void) -{ - unsigned long address=gp2x_physvram[0]; - - gp2x_screen15=gp2x_logvram15[0]; - gp2x_screen8=(unsigned char *)gp2x_screen15; - - gp2x_memregs[0x290E>>1]=(unsigned short)(address & 0xFFFF); - gp2x_memregs[0x2910>>1]=(unsigned short)(address >> 16); - gp2x_memregs[0x2912>>1]=(unsigned short)(address & 0xFFFF); - gp2x_memregs[0x2914>>1]=(unsigned short)(address >> 16); -} - - -void gp2x_video_setgamma(unsigned short gamma) /*0..255*/ -{ - int i=256*3; - gp2x_memregs[0x295C>>1]=0; - while(i--) gp2x_memregs[0x295E>>1]=gamma; -} - -void gp2x_video_setpalette(void) -{ - unsigned short *g=(unsigned short *)gp2x_palette; int i=512; - gp2x_memregs[0x2958>>1]=0; - while(i--) gp2x_memregs[0x295A>>1]=*g++; -} - -void gp2x_blitter_rect15(gp2x_rect *r) -{ - int x, y; unsigned short *data=r->data15, *offset=&gp2x_screen15[r->x+r->y*320]; - - y=r->h; if(r->solid) - while(y--) { x=r->w; while(x--) *offset++=*data++; offset+=320-x; } - else - while(y--) { x=r->w; while(x--) { if(*data) *offset=*data; offset++, data++; } - offset+=320-x; } -} - -void gp2x_blitter_rect8(gp2x_rect *r) -{ - int x, y; unsigned char *data=r->data8, *offset=&gp2x_screen8[r->x+r->y*320]; - - y=r->h; if(r->solid) - while(y--) { x=r->w; while(x--) *offset++=*data++; offset+=320-x; } - else - while(y--) { x=r->w; while(x--) { if(*data) *offset=*data; offset++, data++; } - offset+=320-x; } -} - -unsigned long gp2x_joystick_read(void) -{ - unsigned long value=(gp2x_memregs[0x1198>>1] & 0x00FF); - - if(value==0xFD) value=0xFA; - if(value==0xF7) value=0xEB; - if(value==0xDF) value=0xAF; - if(value==0x7F) value=0xBE; - - return ~((gp2x_memregs[0x1184>>1] & 0xFF00) | value | (gp2x_memregs[0x1186>>1] << 16)); -} - -void gp2x_sound_volume(int l, int r) -{ - l=(((l*0x50)/100)<<8)|((r*0x50)/100); //0x5A, 0x60 - ioctl(gp2x_dev[4], SOUND_MIXER_WRITE_PCM, &l); //SOUND_MIXER_WRITE_VOLUME -} - -void gp2x_timer_delay(unsigned long ticks) -{ - unsigned long target=gp2x_memregl[0x0A00>>2]+ticks*gp2x_ticks_per_second; - while(gp2x_memregl[0x0A00>>2]>2]/gp2x_ticks_per_second; -} - -unsigned long gp2x_timer_read_ms(void) -{ - return gp2x_memregl[0x0A00>>2]; -} - - -void gp2x_sound_pause(int yes) { gp2x_sound_pausei=yes; } - - -static void *gp2x_sound_play(void *blah) -{ - int flip=0, flyp=gp2x_sound_buffer[1]; - struct timespec ts; ts.tv_sec=0, ts.tv_nsec=gp2x_sound_buffer[2]; - - while(!gp2x_sound) - { - nanosleep(&ts, NULL); - - - if(!gp2x_sound_pausei) - { - // [1] is sound buffer size at 22050, 16, stereo, it is 1468 (367*4) - // [0] number of bytes?, at 22050,16,stereo, it is 367 - // first half of buffer - - // first one is 368 - - - gp2x_sound_frame(blah, (void *)(&gp2x_sound_buffer[4+flip]), gp2x_sound_buffer[0]); - // write out to second half of buffer - write(gp2x_dev[3], (void *)(&gp2x_sound_buffer[4+flyp]), gp2x_sound_buffer[1]); - - flip+=gp2x_sound_buffer[1]; - if(flip==gp2x_sound_buffer[1]*8) flip=0; - flyp+=gp2x_sound_buffer[1]; - if(flyp==gp2x_sound_buffer[1]*8) flyp=0; - } - } - return NULL; -} - -static void gp2x_initqueue(gp2x_queue *q, unsigned long queue_items, unsigned long *position920t, unsigned long *position940t) -{ - q->head = q->tail = q->items = 0; - q->max_items = queue_items; - if(position920t) q->place920t=position920t; else q->place920t=(unsigned long *)malloc(sizeof(unsigned long) * queue_items); - if(position940t) q->place940t=position940t; - memset(q->place920t, 0, sizeof(unsigned long) * queue_items); -} - -static void gp2x_enqueue(gp2x_queue *q, unsigned long data) -{ - while(q->items==q->max_items); /*waiting for tail to decrease...*/ - q->place920t[q->head = (q->head < q->max_items ? q->head+1 : 0)] = data; - q->items++; -} - -/* UNUSED - static unsigned long gp2x_dequeue(gp2x_queue *q) -{ - while(!q->items); //waiting for head to increase... - q->items--; - return q->place920t[q->tail = (q->tail < q->max_items ? q->tail+1 : 0)]; -} */ - - - - void gp2x_dualcore_pause(int yes) { if(yes) gp2x_memregs[0x0904>>1] &= 0xFFFE; else gp2x_memregs[0x0904>>1] |= 1; } -static void gp2x_940t_reset(int yes) { gp2x_memregs[0x3B48>>1] = ((yes&1) << 7) | (0x03); } -static void gp2x_940t_pause(int yes) { gp2x_dualcore_pause(yes); } - -static void gp2x_dualcore_registers(int save) -{ - static unsigned short regs[8]; - - if(save) - { - regs[0]=gp2x_memregs[0x0904>>1]; regs[1]=gp2x_memregs[0x0912>>1]; - regs[2]=gp2x_memregs[0x091c>>1]; regs[3]=gp2x_memregs[0x3b40>>1]; - regs[4]=gp2x_memregs[0x3b42>>1]; regs[5]=gp2x_memregs[0x3b48>>1]; - regs[6]=gp2x_memregs[0x3b44>>1]; regs[7]=gp2x_memregs[0x3b46>>1]; - - gp2x_940t_reset(1); - gp2x_940t_pause(1); - } - else - { - gp2x_memregs[0x0904>>1]=regs[0]; gp2x_memregs[0x0912>>1]=regs[1]; - gp2x_memregs[0x091c>>1]=regs[2]; gp2x_memregs[0x3b40>>1]=regs[3]; - gp2x_memregs[0x3b42>>1]=regs[4]; gp2x_memregs[0x3b48>>1]=regs[5]; - gp2x_memregs[0x3b44>>1]=regs[6]; gp2x_memregs[0x3b46>>1]=regs[7]; - } -} - -void gp2x_dualcore_sync(void) -{ - gp2x_queue *q=(gp2x_queue *)gp2x_1stcore_data_ptr(GP2X_QUEUE_ARRAY_PTR); - while(q->items); -} - -void gp2x_dualcore_exec(unsigned long command) { gp2x_enqueue((gp2x_queue *)gp2x_1stcore_data_ptr(GP2X_QUEUE_ARRAY_PTR),command); } - -void gp2x_dualcore_launch_program(unsigned long *area, unsigned long size) -{ - unsigned long i=0, *arm940t_ram=(unsigned long *)gp2x_dualcore_ram; - - gp2x_940t_reset(1); - - gp2x_memregs[0x3B40>>1] = 0; //disable interrupts - gp2x_memregs[0x3B42>>1] = 0; - gp2x_memregs[0x3B44>>1] = 0xffff; - gp2x_memregs[0x3B46>>1] = 0xffff; - - gp2x_940t_pause(0); - - while(i < size) *arm940t_ram++=area[i++]; - - gp2x_initqueue((gp2x_queue *)gp2x_1stcore_data_ptr(GP2X_QUEUE_ARRAY_PTR), GP2X_QUEUE_MAX_ITEMS, (unsigned long *)gp2x_1stcore_data_ptr(GP2X_QUEUE_DATA_PTR), (unsigned long *)gp2x_2ndcore_data_ptr(GP2X_QUEUE_DATA_PTR)); - - gp2x_940t_reset(0); -} - -void gp2x_dualcore_launch_program_from_disk(const char *file, unsigned long offset, unsigned long size) -{ - FILE *in; void *data; - - if((in=fopen(file, "rb"))==NULL) return; - if((data=malloc(size))==NULL) { fclose(in); return; } - fseek(in, 0L, offset); - fread(data, 1, size, in); - gp2x_dualcore_launch_program((unsigned long *)data, size); - free(data); - fclose(in); -} - -void gp2x_init(int ticks_per_second, int bpp, int rate, int bits, int stereo, int Hz) -{ - struct fb_fix_screeninfo fixed_info; - static int first=1; - - // GP2X_DO_SOUND - int gp2x_do_sound=1; - int frag=0; - int channels=1; - int stereoLocal=0; - - gp2x_ticks_per_second=7372800/ticks_per_second; - - if(!gp2x_dev[0]) gp2x_dev[0] = open("/dev/fb0", O_RDWR); - if(!gp2x_dev[1]) gp2x_dev[1] = open("/dev/fb1", O_RDWR); - if(!gp2x_dev[2]) gp2x_dev[2] = open("/dev/mem", O_RDWR); - - // don't run sound right now - if ( gp2x_do_sound) - { - if(!gp2x_dev[3]) gp2x_dev[3] = open("/dev/dsp", O_WRONLY); - if(!gp2x_dev[4]) gp2x_dev[4] = open("/dev/mixer", O_RDWR); - } - - gp2x_dualcore_ram=(unsigned long *)mmap(0, 0x1000000, PROT_READ|PROT_WRITE, MAP_SHARED, gp2x_dev[2], 0x03000000); -/*gp2x_dualcore_ram=(unsigned long *)mmap(0, 0x2000000, PROT_READ|PROT_WRITE, MAP_SHARED, gp2x_dev[2], 0x02000000);*/ - gp2x_memregl=(unsigned long *)mmap(0, 0x10000, PROT_READ|PROT_WRITE, MAP_SHARED, gp2x_dev[2], 0xc0000000); - gp2x_memregs=(unsigned short *)gp2x_memregl; - - if(first) { printf(MINILIB_VERSION "\n"); - gp2x_dualcore_registers(1); - gp2x_sound_volume(100,100); - gp2x_memregs[0x0F16>>1] = 0x830a; usleep(100000); - gp2x_memregs[0x0F58>>1] = 0x100c; usleep(100000); } - - ioctl(gp2x_dev[gp2x_physvram[7]=0], FBIOGET_FSCREENINFO, &fixed_info); - gp2x_screen15=gp2x_logvram15[2]=gp2x_logvram15[0]=(unsigned short *)mmap(0, 320*240*2, PROT_WRITE, MAP_SHARED, gp2x_dev[0], 0); - gp2x_screen8=(unsigned char *)gp2x_screen15; - gp2x_physvram[2]=gp2x_physvram[0]=fixed_info.smem_start; - - ioctl(gp2x_dev[1], FBIOGET_FSCREENINFO, &fixed_info); - gp2x_logvram15[3]=gp2x_logvram15[1]=(unsigned short *)mmap(0, 320*240*2, PROT_WRITE, MAP_SHARED, gp2x_dev[1], 0); - gp2x_physvram[3]=gp2x_physvram[1]=fixed_info.smem_start; - - gp2x_memregs[0x28DA>>1]=(((bpp+1)/8)<<9)|0xAB; /*8/15/16/24bpp...*/ - gp2x_memregs[0x290C>>1]=320*((bpp+1)/8); /*line width in bytes*/ - - memset(gp2x_screen15, 0, 320*240*2); gp2x_video_flip(); - memset(gp2x_screen15, 0, 320*240*2); gp2x_video_flip(); - - if(bpp==8) gp2x_physvram[2]+=320*240, gp2x_physvram[3]+=320*240, - gp2x_logvram15[2]+=320*240/2, gp2x_logvram15[3]+=320*240/2; - - - if ( gp2x_do_sound) - { - - ioctl(gp2x_dev[3], SNDCTL_DSP_SPEED, &rate); - ioctl(gp2x_dev[3], SNDCTL_DSP_SETFMT, &bits); - - ioctl(gp2x_dev[3], SNDCTL_DSP_CHANNELS, &channels); - ioctl(gp2x_dev[3], SNDCTL_DSP_STEREO, &stereoLocal); - - frag = 0x40000|13; - ioctl(gp2x_dev[3], SNDCTL_DSP_SETFRAGMENT, &frag); - - - printf("minimal() do sound, rate %d, bits %d, stereo %d, frag %d\n", rate, bits, stereo, frag); - - if(first) - { - first=0; - } - } - -} - - -extern int fcloseall(void); -void gp2x_deinit(void) -{ - while((gp2x_sound++)<1000000); //wait arm920t threads to finish - - gp2x_dualcore_registers(0); - - gp2x_memregs[0x28DA>>1]=0x4AB; //set video mode - gp2x_memregs[0x290C>>1]=640; - - { int i; for(i=0;i<8;i++) if(gp2x_dev[i]) close(gp2x_dev[i]); } //close all devices - - fcloseall(); //close all files - -} - - -void SetVideoScaling(int pixels,int width,int height) -{ - float x, y; - float xscale,yscale; - - int bpp=(gp2x_memregs[0x28DA>>1]>>9)&0x3; /* bytes per pixel */ - - if(gp2x_memregs[0x2800>>1]&0x100) /* TV-Out ON? */ - { - xscale=489.0; /* X-Scale with TV-Out (PAL or NTSC) */ - if (gp2x_memregs[0x2818>>1] == 287) /* PAL? */ - yscale=(pixels*274.0)/320.0; /* Y-Scale with PAL */ - else if (gp2x_memregs[0x2818>>1] == 239) /* NTSC? */ - yscale=(pixels*331.0)/320.0; /* Y-Scale with NTSC */ - } - else /* TV-Out OFF? */ - { - xscale=1024.0; /* X-Scale for LCD */ - yscale=pixels; /* Y-Scale for LCD */ - } - - x=(xscale*width)/320.0; - y=(yscale*bpp*height)/240.0; - gp2x_memregs[0x2906>>1]=(unsigned short)x; /* scale horizontal */ - gp2x_memregl[0x2908>>2]=(unsigned long)y; /* scale vertical */ - gp2x_memregs[0x290C>>1]=pixels*bpp; /* Set Video Width */ -}