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main.c
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#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h> /* for getcwd() */
/* posix includes for mkdir */
#include <sys/types.h>
#include <sys/stat.h>
#ifdef WIZ
#include <fcntl.h>
#include <sys/mman.h>
#endif
#include <SDL/SDL.h>
#ifdef OHBOY_USE_SDL_IMAGE
#include "SDL/SDL_image.h"
#endif /* OHBOY_USE_SDL_IMAGE */
#include "SFont.h"
#include "font8px.h" /* built in FPS font */
/*
#include "font14px.h"
*/
#include "font_pressstart8x.h"
#include "gnuboy.h"
#include "fb.h"
#include "input.h"
#include "rc.h"
#include "pcm.h"
#include "ubytegui/gui.h"
#include "hw.h"
#include "loader.h"
#include "gui_sdl.h"
#include "menu.h"
#ifdef __GNUC__
# define unlikely(x) __builtin_expect((x),0)
# define prefetch(x, y) __builtin_prefetch((x),(y))
#else
# define unlikely(x) (x)
# define prefetch(x, y)
#endif
void ohb_loadrom(char *rom);
/* fps */
/*static int sdl_showfps 0 = OFF, 1 = Text Only, 2 = Text in a box (white text on black background) */
static int fps_current_count = 0;
static int fps_last_count = 0;
static int fps_last_time = 0;
static int fps_current_time = 0;
static char fps_str[20] = {0};
static SDL_Surface *fps_font_bitmap_surface=NULL;
static SDL_Surface *menu_font_bitmap_surface=NULL;
static SDL_Surface *bgimage_bitmap_surface=NULL;
SFont_Font* fps_font=NULL;
SFont_Font* menu_font=NULL;
SDL_Surface *bordersf = NULL;
SDL_Rect myrect;
/* fps */
#define FONT_NAME "pressstart.ttf"
#define FONT_SIZE 8
#define SFONT_NAME "pressstart_font"
static font_t *font;
struct fb fb;
static int upscaler=0, frameskip=0, sdl_showfps=0, cpu_speed=0, bmpenabled=0, statesram=1, analog_input=1, systemmode=0, blendframes=0;
static char* romdir=0, pal=0;
char *border;
char *gbcborder;
static int osd_persist=0;
static int dvolume=0;
#ifdef DINGOO_BUILD
static int button_a=1, button_b=2, button_x=0, button_y=0, button_l=0, button_r=0;
#else
static int button_a=2, button_b=1, button_x=0, button_y=0, button_l=0, button_r=0;
#endif /* DINGOO_BUILD */
#ifdef GNUBOY_HARDWARE_VOLUME
static int sndlvl=10;
#endif /* GNBOY_HARDWARE_VOLUME */
#ifdef GCWZERO
static int alt_menu_combo=0;
#endif /* GCWZERO */
rcvar_t vid_exports[] =
{
RCV_INT("frameskip", &frameskip),
RCV_INT("showfps", &sdl_showfps),
RCV_INT("cpuspeed",&cpu_speed),
RCV_STRING("romdir",&romdir),
RCV_INT("statesram", &statesram),
RCV_INT("systemmode", &systemmode),
#ifdef GNUBOY_HARDWARE_VOLUME
RCV_INT("sndlvl", &sndlvl),
#endif /* GNBOY_HARDWARE_VOLUME */
RCV_STRING("palette",&pal),
RCV_INT("upscaler", &upscaler),
RCV_INT("bmpenabled", &bmpenabled),
RCV_STRING("border",&border),
RCV_STRING("gbcborder",&gbcborder),
RCV_INT("blendframes",&blendframes),
RCV_INT("button_a", &button_a),
RCV_INT("button_b", &button_b),
RCV_INT("button_x", &button_x),
RCV_INT("button_y", &button_y),
RCV_INT("button_l", &button_l),
RCV_INT("button_r", &button_r),
RCV_INT("analog_input", &analog_input),
#ifdef GCWZERO
RCV_INT("alt_menu_combo", &alt_menu_combo),
#endif /* GCWZERO */
RCV_END
};
struct fb currframe_fb;
struct fb lastframe_fb;
static un16 vid_currframe[160*144];
static un16 vid_lastframe[160*144];
struct fb vid_fb;
static un16 vid_frame[160*144];
SDL_Surface *screen;
int framecounter = 0;
#ifndef GNUBOY_DISABLE_SDL_SOUND
#ifndef OHBOY_DISABLE_SDL_SOUND
struct pcm pcm;
rcvar_t pcm_exports[] =
{
RCV_END
};
#endif /* OHBOY_DISABLE_SDL_SOUND */
#endif /* GNUBOY_DISABLE_SDL_SOUND */
#define PCM_SAMPLERATE 44100
#ifdef GCWZERO
#define PCM_BUFFER 2048
#define PCM_FRAME 1024
#define VOL_MULTIPLIER 3
#else
#define PCM_BUFFER 3072
#define PCM_FRAME 1024
#define VOL_MULTIPLIER 1
#endif /* GCWZERO */
#define UP_MASK 0x83
#define DOWN_MASK 0x38
#define LEFT_MASK 0x0E
#define RIGHT_MASK 0xE0
n16 *buf;
n16 pcm_buffer[PCM_BUFFER << 1];
byte pcm_frame[PCM_FRAME << 1];
volatile int pcm_buffered = 0;
n16 *pcm_head, *pcm_tail;
int pcm_soft_volume=0x80, pcm_bufferlen;
SDL_Joystick * sdl_joy;
static const int joy_commit_range = 3276;
static char Xstatus, Ystatus;
static int use_joy=0;
#ifdef CAANOO
enum
{
BTN_A = 0, // A / 1
BTN_X = 1, // X / 2
BTN_B = 2, // B / 3
BTN_Y = 3, // Y / 4
BTN_L = 4, // L / 5, L1
BTN_R = 5, // R / 6, L2
BTN_HOME = 6, // Home / 7, R1
BTN_HOLD = 7, // Hold / 8, R2
BTN_HELP1 = 8, // Help I / Select
BTN_HELP2 = 9, // Help II / Start
BTN_TACT = 10, // Tact / L Thumb Stick
BTN_UP = 11,
BTN_DOWN = 12,
BTN_LEFT = 13,
BTN_RIGHT = 14,
};
void Caanoo_PushAnalogEvent(int btn, int pressed){
SDL_Event event;
event.type = (pressed)?SDL_JOYBUTTONDOWN:SDL_JOYBUTTONUP;
event.jbutton.button = btn;
event.jbutton.state = (pressed)?SDL_PRESSED:SDL_RELEASED;
event.jbutton.which = 0;
SDL_PushEvent(&event);
}
void Caanoo_UpdateAnalog(void){
static int buttonsPrevLeft = 0;
static int buttonsPrevRight = 0;
static int buttonsPrevUp = 0;
static int buttonsPrevDown = 0;
int buttonsNowLeft = 0;
int buttonsNowRight = 0;
int buttonsNowUp = 0;
int buttonsNowDown = 0;
SDL_JoystickUpdate();
if (SDL_JoystickGetAxis( sdl_joy, 0 ) < -24000) buttonsNowLeft |= (1 << BTN_LEFT);
else if (SDL_JoystickGetAxis( sdl_joy, 0 ) > 24000) buttonsNowRight |= (1 << BTN_RIGHT);
else if (SDL_JoystickGetAxis( sdl_joy, 1 ) < -24000) buttonsNowUp |= (1 << BTN_UP);
else if (SDL_JoystickGetAxis( sdl_joy, 1 ) > 24000) buttonsNowDown |= (1 << BTN_DOWN);
if (buttonsNowLeft != buttonsPrevLeft)
{
if ((buttonsNowLeft & (1 << BTN_LEFT)) != (buttonsPrevLeft & (1 << BTN_LEFT)))
{
Caanoo_PushAnalogEvent(BTN_LEFT, (buttonsNowLeft & (1 << BTN_LEFT)));
}
}
buttonsPrevLeft = buttonsNowLeft;
if (buttonsNowRight != buttonsPrevRight)
{
if ((buttonsNowRight & (1 << BTN_RIGHT)) != (buttonsPrevRight & (1 << BTN_RIGHT)))
{
Caanoo_PushAnalogEvent(BTN_RIGHT, (buttonsNowRight & (1 << BTN_RIGHT)));
}
}
buttonsPrevRight = buttonsNowRight;
if (buttonsNowUp != buttonsPrevUp)
{
if ((buttonsNowUp & (1 << BTN_UP)) != (buttonsPrevUp & (1 << BTN_UP)))
{
Caanoo_PushAnalogEvent(BTN_UP, (buttonsNowUp & (1 << BTN_UP)));
}
}
buttonsPrevUp = buttonsNowUp;
if (buttonsNowDown != buttonsPrevDown)
{
if ((buttonsNowDown & (1 << BTN_DOWN)) != (buttonsPrevDown & (1 << BTN_DOWN)))
{
Caanoo_PushAnalogEvent(BTN_DOWN, (buttonsNowDown & (1 << BTN_DOWN)));
}
}
buttonsPrevDown = buttonsNowDown;
}
#endif
rcvar_t joy_exports[] =
{
RCV_BOOL("joy", &use_joy),
RCV_END
};
/* keymap - mappings of the form { scancode, localcode } - from sdl/keymap.c */
extern int keymap[][2];
void vid_init() {
SDL_LockSurface(screen);
vid_fb.w = screen->w;
vid_fb.h = screen->h;
vid_fb.pelsize = screen->format->BytesPerPixel;
vid_fb.pitch = screen->pitch;
vid_fb.indexed = fb.pelsize == 1;
vid_fb.ptr = screen->pixels;
vid_fb.cc[0].r = screen->format->Rloss;
vid_fb.cc[0].l = screen->format->Rshift;
vid_fb.cc[1].r = screen->format->Gloss;
vid_fb.cc[1].l = screen->format->Gshift;
vid_fb.cc[2].r = screen->format->Bloss;
vid_fb.cc[2].l = screen->format->Bshift;
SDL_UnlockSurface(screen);
fb.w = 160; /* Gameboy native res - width */
fb.h = 144; /* Gameboy native res - height */
fb.pelsize = 2;
fb.pitch = 320;
fb.indexed = 0;
fb.cc[0].r = screen->format->Rloss;
fb.cc[0].l = screen->format->Rshift;
fb.cc[1].r = screen->format->Gloss;
fb.cc[1].l = screen->format->Gshift;
fb.cc[2].r = screen->format->Bloss;
fb.cc[2].l = screen->format->Bshift;
fb.ptr = vid_frame;
fb.enabled = 1;
fb.dirty = 0;
lastframe_fb.w = 160; /* Gameboy native res - width */
lastframe_fb.h = 144; /* Gameboy native res - height */
lastframe_fb.pelsize = 2;
lastframe_fb.pitch = 320;
lastframe_fb.indexed = 0;
lastframe_fb.cc[0].r = screen->format->Rloss;
lastframe_fb.cc[0].l = screen->format->Rshift;
lastframe_fb.cc[1].r = screen->format->Gloss;
lastframe_fb.cc[1].l = screen->format->Gshift;
lastframe_fb.cc[2].r = screen->format->Bloss;
lastframe_fb.cc[2].l = screen->format->Bshift;
lastframe_fb.ptr = vid_lastframe;
lastframe_fb.enabled = 1;
lastframe_fb.dirty = 0;
currframe_fb.w = 160; /* Gameboy native res - width */
currframe_fb.h = 144; /* Gameboy native res - height */
currframe_fb.pelsize = 2;
currframe_fb.pitch = 320;
currframe_fb.indexed = 0;
currframe_fb.cc[0].r = screen->format->Rloss;
currframe_fb.cc[0].l = screen->format->Rshift;
currframe_fb.cc[1].r = screen->format->Gloss;
currframe_fb.cc[1].l = screen->format->Gshift;
currframe_fb.cc[2].r = screen->format->Bloss;
currframe_fb.cc[2].l = screen->format->Bshift;
currframe_fb.ptr = vid_currframe;
currframe_fb.enabled = 1;
currframe_fb.dirty = 0;
SDL_FreeSurface (bordersf);
vid_fb.first_paint = 1;
if (bmpenabled == 0){
#ifdef OHBOY_USE_SDL_IMAGE
bordersf = IMG_Load("etc"DIRSEP"black.png");}
#else
bordersf = SDL_LoadBMP("etc"DIRSEP"black.bmp");}
#endif /*OHBOY_USE_SDL_IMAGE*/
else if (bmpenabled == 1)
{
#ifdef OHBOY_USE_SDL_IMAGE
if (hw.cgb){bordersf = IMG_Load(gbcborder);}
if (!hw.cgb){bordersf = IMG_Load(border);}
#else
if (hw.cgb){bordersf = SDL_LoadBMP(gbcborder);}
if (!hw.cgb){bordersf = SDL_LoadBMP(border);}
#endif /*OHBOY_USE_SDL_IMAGE*/
if ((upscaler == 3) || (upscaler == 4) || (upscaler == 7)) {
#ifdef OHBOY_USE_SDL_IMAGE
bordersf = IMG_Load("etc"DIRSEP"black.png");}
#else
bordersf = SDL_LoadBMP("etc"DIRSEP"black.bmp");}
#endif /*OHBOY_USE_SDL_IMAGE*/
#if defined(DINGOO_OPENDINGUX)
if (bordersf == NULL){ /*Fix for flickering screen when borders are set to On but no border is loaded, and double buffer is used*/
#ifdef OHBOY_USE_SDL_IMAGE
bordersf = IMG_Load("etc"DIRSEP"black.png");}
#else
bordersf = SDL_LoadBMP("etc"DIRSEP"black.bmp");}
#endif /*OHBOY_USE_SDL_IMAGE*/
#endif /*DINGOO_OPENDINGUX*/
}
}
void paint_menu_bg() {
int x, y;
pixmap_t *pix;
#ifdef UBYTE_USE_LIBPNG
#ifdef DINGOO_SIM
/* do nothing */
#else
pix = pixmap_loadpng("etc"DIRSEP"launch.png");
if(pix){
SDL_LockSurface(screen);
x = (screen->w - pix->width)/2;
y = (screen->h - pix->height)/2;
osd_drawpixmap(pix,x,y,0);
pixmap_free(pix);
SDL_UnlockSurface(screen);
}
#endif /* DINGOO_SIM */
#else
/*
** Use SDL_LoadBMP() from base SDL
** TODO use IMG_Load() from SDL_image
*/
SDL_Surface *tmp_surface=NULL;
#ifdef DINGOO_SIM
/* do nothing */
#else
#ifdef OHBOY_USE_SDL_IMAGE
tmp_surface = IMG_Load("etc"DIRSEP"launch.png");
#else
tmp_surface = SDL_LoadBMP("etc"DIRSEP"launch.bmp");
#endif /*OHBOY_USE_SDL_IMAGE*/
if (tmp_surface)
{
bgimage_bitmap_surface = SDL_DisplayFormat(tmp_surface);
SDL_FreeSurface(tmp_surface);
if (bgimage_bitmap_surface)
{
/*
SDL_Rect src, dest;
src.x = 0;
src.y = 0;
src.w = bgimage_bitmap_surface->w;
src.h = bgimage_bitmap_surface->h;
dest.x = 0;
dest.y = 0;
dest.w = bgimage_bitmap_surface->w;
dest.h = bgimage_bitmap_surface->h;
*/
SDL_UnlockSurface(screen);
SDL_BlitSurface(bgimage_bitmap_surface, NULL, screen, NULL);
/*
SDL_BlitSurface(bgimage_bitmap_surface, &src, screen, &dest);
*/
SDL_Flip(screen); /*Fix for launch BMP not showing when using double buffer*/
SDL_BlitSurface(bgimage_bitmap_surface, NULL, screen, NULL); /*Paints the launch BMP two times*/
SDL_FreeSurface(bgimage_bitmap_surface);
SDL_Flip(screen);
/*
SDL_LockSurface(screen); // for some reason this prevents SFont from displaying.....
*/
}
}
#endif /* DINGOO_SIM */
#endif /* UBYTE_USE_LIBPNG */
}
void vid_setpal(int i, int r, int g, int b){
/*
** complete NOOP
** internal gameboy framebuffer fb.ptr/vid_frame[] is used instead
** and then used to blit to screen at vid_end()
*/
}
/*
** This appears to be the GPL algorithm described at http://scale2x.sourceforge.net/algorithm.html
*/
#define SCALE3X(l,r,t,b,E0,E1,E2,E3,E4,E5,E6,E7,E8)\
A = src[t+l], B = src[t], C = src[t+r];\
D = src[ l ], E = src[0], F = src[ r ];\
G = src[b+l], H = src[b], I = src[b+r];\
if (B != H && D != F) {\
E0 += D == B ? D : E;\
E1 += (D == B && E != C) || (B == F && E != A) ? B : E;\
E2 += B == F ? F : E;\
E3 += (D == B && E != G) || (D == H && E != A) ? D : E;\
E4 += E;\
E5 += (B == F && E != I) || (H == F && E != C) ? F : E;\
E6 += D == H ? D : E;\
E7 += (D == H && E != I) || (H == F && E != G) ? H : E;\
E8 += H == F ? F : E;\
} else {\
E0 += E;\
E1 += E;\
E2 += E;\
E3 += E;\
E4 += E;\
E5 += E;\
E6 += E;\
E7 += E;\
E8 += E;\
}
#ifdef WIZ
static un16 buffer[3][216];
void ohb_scale3x(){
un16 *dst = buffer[0];
un16 *src = (un16*)fb.ptr+159;
un16 *base = (un16*)vid_fb.ptr + 9612;
int x,y;
un16 A,B,C,D,E,F,G,H,I;
memset(buffer,0,432*3);
// Top-right
SCALE3X(-1,0,0,160,dst[216],dst[0],dst[0],dst[216],dst[0],dst[0],dst[217],dst[1],dst[1]);
dst++, src+=160;
// right
for(y=1; y<143; y+=2){
SCALE3X(-1,0,-160,160,dst[216],dst[0],dst[0],dst[217],dst[1],dst[1],dst[217],dst[1],dst[1]);
dst+=2, src+=160;
SCALE3X(-1,0,-160,160,dst[216],dst[0],dst[0],dst[216],dst[0],dst[0],dst[217],dst[1],dst[1]);
dst++, src+=160;
}
// bottom-Right
SCALE3X(-1,0,-160,0,dst[216],dst[0],dst[0],dst[217],dst[1],dst[1],dst[217],dst[1],dst[1]);
dst+=2, src+=160;
for(x=158; x>1; x-=2){
src = (un16*)fb.ptr + x;
// top
SCALE3X(-1,1,0,160,dst[216],dst[216],dst[0],dst[216],dst[216],dst[0],dst[217],dst[217],dst[1]);
dst++, src+=160;
// middle
for(y=1; y<143; y+=2){
SCALE3X(-1,1,-160,160,dst[216],dst[216],dst[0],dst[217],dst[217],dst[1],dst[217],dst[217],dst[1]);
dst+=2, src+=160;
SCALE3X(-1,1,-160,160,dst[216],dst[216],dst[0],dst[216],dst[216],dst[0],dst[217],dst[217],dst[1]);
dst++, src+=160;
}
// bottom
SCALE3X(-1,1,-160,0,dst[216],dst[216],dst[0],dst[217],dst[217],dst[1],dst[217],dst[217],dst[1]);
dst+=2, src+=160;
memcpy(base,buffer[0],432);
memcpy(base+240,buffer[1],432);
memcpy(base+480,buffer[2],432);
dst=buffer[0];
base += 720;
memset(buffer,0,432*3);
src = (un16*)fb.ptr + x-1;
// top
SCALE3X(-1,1,0,160,dst[216],dst[0],dst[0],dst[216],dst[0],dst[0],dst[217],dst[1],dst[1]);
dst++, src+=160;
// middle
for(y=1; y<143; y+=2){
SCALE3X(-1,1,-160,160,dst[216],dst[0],dst[0],dst[217],dst[1],dst[1],dst[217],dst[1],dst[1]);
dst+=2, src+=160;
SCALE3X(-1,1,-160,160,dst[216],dst[0],dst[0],dst[216],dst[0],dst[0],dst[217],dst[1],dst[1]);
dst++, src+=160;
}
// bottom
SCALE3X(-1,1,-160,0,dst[216],dst[0],dst[0],dst[217],dst[1],dst[1],dst[217],dst[1],dst[1]);
dst+=2, src+=160;
}
src = fb.ptr;
// top-left
SCALE3X(0,1,0,160,dst[216],dst[216],dst[0],dst[216],dst[216],dst[0],dst[217],dst[217],dst[1]);
dst++, src+=160;
// left
for(y=1; y<143; y+=2){
SCALE3X(0,1,-160,160,dst[216],dst[216],dst[0],dst[217],dst[217],dst[1],dst[217],dst[217],dst[1]);
dst+=2, src+=160;
SCALE3X(0,1,-160,160,dst[216],dst[216],dst[0],dst[216],dst[216],dst[0],dst[217],dst[217],dst[1]);
dst++, src+=160;
}
// bottom-right
SCALE3X(0,1,-160,0,dst[216],dst[216],dst[0],dst[217],dst[217],dst[1],dst[217],dst[217],dst[1]);
dst+=2, src+=160;
memcpy(base,buffer[0],432);
memcpy(base+240,buffer[1],432);
memcpy(base+480,buffer[2],432);
}
#else
static un16 buffer[3][240];
/*
** Appears to expect source/dest framebuffer pixels to be 16bpp
** But expects source to be in RGB343 format. Looks like it may expect dest to be RGB565.
** 1.5 scaler with "smoothing", i.e. 160x144 -> 239x215 BUT centered/centred in a 320x240 screen.
** It looks like it does a 2 pass conversion:
** 1) increase 3x
** 2) decrease by 2x
*/
void ohb_scale3x(){
un16 *dst = buffer[0];
un16 *src = (un16*)fb.ptr;
un16 *base = (un16*)vid_fb.ptr + 3880;
int x,y;
un16 A,B,C,D,E,F,G,H,I;
memset(buffer,0,480*3);
// Top-left
SCALE3X(0,1,0,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
// Top
for(x=1; x<159; x+=2){
SCALE3X(-1,1,0,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,0,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
}
// Top-Right
SCALE3X(-1,0,0,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
for(y=1; y<142; y+=2){
// left
SCALE3X(0,1,-160,160,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
// middle
for(x=1; x<159; x+=2){
SCALE3X(-1,1,-160,160,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,-160,160,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
}
// right
SCALE3X(-1,0,-160,160,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
memcpy(base,buffer[0],480);
memcpy(base+320,buffer[1],480);
memcpy(base+640,buffer[2],480);
dst=(un16*)buffer;
base += 960;
memset(buffer,0,480*3);
// left
SCALE3X(0,1,-160,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
// middle
for(x=1; x<159; x+=2){
SCALE3X(-1,1,-160,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,-160,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
}
// right
SCALE3X(-1,0,-160,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
}
// left
SCALE3X(0,1,-160,0,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
// middle
for(x=1; x<159; x+=2){
SCALE3X(-1,1,-160,0,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,-160,0,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
}
// right
SCALE3X(-1,0,-160,0,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
memcpy(base,buffer[0],480);
memcpy(base+320,buffer[1],480);
memcpy(base+640,buffer[2],480);
}
void blend_scale3x(){
un16 *dst = buffer[0];
un16 *src = (un16*)currframe_fb.ptr;
un16 *base = (un16*)vid_fb.ptr + 3880;
int x,y;
un16 A,B,C,D,E,F,G,H,I;
memset(buffer,0,480*3);
// Top-left
SCALE3X(0,1,0,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
// Top
for(x=1; x<159; x+=2){
SCALE3X(-1,1,0,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,0,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
}
// Top-Right
SCALE3X(-1,0,0,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
for(y=1; y<142; y+=2){
// left
SCALE3X(0,1,-160,160,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
// middle
for(x=1; x<159; x+=2){
SCALE3X(-1,1,-160,160,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,-160,160,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
}
// right
SCALE3X(-1,0,-160,160,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
memcpy(base,buffer[0],480);
memcpy(base+320,buffer[1],480);
memcpy(base+640,buffer[2],480);
dst=(un16*)buffer;
base += 960;
memset(buffer,0,480*3);
// left
SCALE3X(0,1,-160,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
// middle
for(x=1; x<159; x+=2){
SCALE3X(-1,1,-160,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,-160,160,dst[0],dst[0],dst[1],dst[0],dst[0],dst[1],dst[240],dst[240],dst[241]);
dst++, src++;
}
// right
SCALE3X(-1,0,-160,160,dst[0],dst[1],dst[1],dst[0],dst[1],dst[1],dst[240],dst[241],dst[241]);
dst+=2, src++;
}
// left
SCALE3X(0,1,-160,0,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
// middle
for(x=1; x<159; x+=2){
SCALE3X(-1,1,-160,0,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
SCALE3X(-1,1,-160,0,dst[0],dst[0],dst[1],dst[240],dst[240],dst[241],dst[240],dst[240],dst[241]);
dst++, src++;
}
// right
SCALE3X(-1,0,-160,0,dst[0],dst[1],dst[1],dst[240],dst[241],dst[241],dst[240],dst[241],dst[241]);
dst+=2, src++;
memcpy(base,buffer[0],480);
memcpy(base+320,buffer[1],480);
memcpy(base+640,buffer[2],480);
}
#endif
/****************************************************************/
/* Upscale from 160x144 to 320x240 */
void gb_upscale(uint32_t *to, uint32_t *from)
{
uint32_t reg1, reg2, reg3, reg4;
unsigned int x,y;
/* Before:
* a b
* c d
* e f
*
* After (parenthesis = average):
* a a b b
* (a,c) (a,c) (b,d) (b,d)
* c c d d
* (c,e) (c,e) (d,f) (d,f)
* e e f f
*/
for (y=0; y < 240/5; y++) {
for(x=0; x < 320/4; x++) {
prefetch(to+4, 1);
/* Read b-a */
reg2 = *from;
reg1 = reg2 & 0xffff0000;
reg1 |= reg1 >> 16;
/* Write b-b */
*(to+1) = reg1;
reg2 = reg2 & 0xffff;
reg2 |= reg2 << 16;
/* Write a-a */
*to = reg2;
/* Read d-c */
reg4 = *(from + 160/2);
reg3 = reg4 & 0xffff0000;
reg3 |= reg3 >> 16;
/* Write d-d */
*(to + 2*320/2 +1) = reg3;
reg4 = reg4 & 0xffff;
reg4 |= reg4 << 16;
/* Write c-c */
*(to + 2*320/2) = reg4;
/* Write (b,d)-(b,d) */
if (unlikely(reg1 != reg3))
reg1 = ((reg1 & 0xf7def7de) >> 1) + ((reg3 & 0xf7def7de) >> 1);
*(to + 320/2 +1) = reg1;
/* Write (a,c)-(a,c) */
if (unlikely(reg2 != reg4))
reg2 = ((reg2 & 0xf7def7de) >> 1) + ((reg4 & 0xf7def7de) >> 1);
*(to + 320/2) = reg2;
/* Read f-e */
reg2 = *(from++ + 2*160/2);
reg1 = reg2 & 0xffff0000;
reg1 |= reg1 >> 16;
/* Write f-f */
*(to + 4*320/2 +1) = reg1;
reg2 = reg2 & 0xffff;
reg2 |= reg2 << 16;
/* Write e-e */
*(to + 4*320/2) = reg2;
/* Write (d,f)-(d,f) */
if (unlikely(reg2 != reg4))
reg2 = ((reg2 & 0xf7def7de) >> 1) + ((reg4 & 0xf7def7de) >> 1);
*(to++ + 3*320/2) = reg2;
/* Write (c,e)-(c,e) */
if (unlikely(reg1 != reg3))
reg1 = ((reg1 & 0xf7def7de) >> 1) + ((reg3 & 0xf7def7de) >> 1);
*(to++ + 3*320/2) = reg1;
}
to += 4*320/2;
from += 2*160/2;
}
}
/* Upscale from 160x144 to 240x216 */
void ayla_scale15x(uint32_t *to, uint32_t *from)
{
/* Before:
* a b c d
* e f g h
*
* After (parenthesis = average):
* a (a,b) b c (c,d) d
* (a,e) (a,b,e,f) (b,f) (c,g) (c,d,g,h) (d,h)
* e (e,f) f g (g,h) h
*/
uint32_t reg1, reg2, reg3, reg4, reg5;
size_t x, y;
for (y=0; y<216/3; y++) {
for (x=0; x<240/6; x++) {
prefetch(to+4, 1);
/* Read b-a */
reg1 = *from;
reg5 = reg1 >> 16;
if (unlikely((reg1 & 0xffff) != reg5)) {
reg2 = (reg1 & 0xf7de0000) >> 1;
reg1 = (reg1 & 0xffff) + reg2 + ((reg1 & 0xf7de) << 15);
}
/* Write (a,b)-a */
*to = reg1;
/* Read f-e */
reg3 = *(from++ + 160/2);
reg2 = reg3 >> 16;
if (unlikely((reg3 & 0xffff) != reg2)) {
reg4 = (reg3 & 0xf7de0000) >> 1;
reg3 = (reg3 & 0xffff) + reg4 + ((reg3 & 0xf7de) << 15);
}
/* Write (e,f)-e */
*(to + 2*320/2) = reg3;
/* Write (a,b,e,f)-(a,e) */
if (unlikely(reg1 != reg3))
reg1 = ((reg1 & 0xf7def7de) >> 1) + ((reg3 & 0xf7def7de) >> 1);
*(to++ + 320/2) = reg1;
/* Read d-c */
reg1 = *from;
reg4 = reg1 << 16;
/* Write c-b */
reg5 |= reg4;
*to = reg5;
/* Read h-g */
reg3 = *(from++ + 160/2);
/* Write g-f */
reg2 |= (reg3 << 16);
*(to + 2*320/2) = reg2;
/* Write (c,g)-(b,f) */
if (unlikely(reg2 != reg5))
reg2 = ((reg5 & 0xf7def7de) >> 1) + ((reg2 & 0xf7def7de) >> 1);
*(to++ + 320/2) = reg2;
/* Write d-(c,d) */
if (unlikely((reg1 & 0xffff0000) != reg4)) {
reg2 = (reg1 & 0xf7def7de) >> 1;
reg1 = (reg1 & 0xffff0000) | ((reg2 + (reg2 >> 16)) & 0xffff);
}
*to = reg1;
/* Write h-(g,h) */
if (unlikely((reg3 & 0xffff) != reg3 >> 16)) {
reg2 = (reg3 & 0xf7def7de) >> 1;
reg3 = (reg3 & 0xffff0000) | ((reg2 + (reg2 >> 16)) & 0xffff);
}
*(to + 2*320/2) = reg3;
/* Write (d,h)-(c,d,g,h) */
if (unlikely(reg1 != reg3))
reg1 = ((reg1 & 0xf7def7de) >> 1) + ((reg3 & 0xf7def7de) >> 1);
*(to++ + 320/2) = reg1;
}
to += 2*360/2;
from += 160/2;
}
}
/*
* Approximately bilinear scaler, 160x144 to 280x240
*
* Copyright (C) 2014 hi-ban, Nebuleon <[email protected]>
*
* This function and all auxiliary functions are free software; you can
* redistribute them and/or modify them under the terms of the GNU Lesser
* General Public License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* These functions are distributed in the hope that they will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
// Support math
#define Half(A) (((A) >> 1) & 0x7BEF)
// Error correction expressions to piece back the lower bits together
#define RestHalf(A) ((A) & 0x0821)
// Error correction expressions for halves
#define Corr1_1(A, B) ((A) & (B) & 0x0821)
// Halves
#define Weight1_1(A, B) (Half(A) + Half(B) + Corr1_1(A, B))
/* Upscales a 160x144 image to 280x240 using an approximate bilinear
* resampling algorithm that only uses integer math.
*
* Input:
* src: A packed 160x144 pixel image. The pixel format of this image is
* RGB 565.
* Output:
* dst: A packed 280x240 pixel image. The pixel format of this image is
* RGB 565.
*/
void upscale_160x144_to_280x240_bilinearish(uint32_t* dst, uint32_t* src)
{
uint16_t* Src16 = (uint16_t*) src;
uint16_t* Dst16 = (uint16_t*) dst;
// There are 40 blocks of 4 pixels horizontally, and 48 of 3 vertically.
// Each block of 4x3 becomes 7x5.
uint32_t BlockX, BlockY;
uint16_t* BlockSrc;
uint16_t* BlockDst;
for (BlockY = 0; BlockY < 48; BlockY++)
{
BlockSrc = Src16 + BlockY * 160 * 3;
BlockDst = Dst16 + BlockY * 320 * 5;
for (BlockX = 0; BlockX < 40; BlockX++)
{
/* Horizontally:
* Before(4):
* (a)(b)(c)(d)
* After(7):
* (a)(ab)(b)(bc)(c)(cd)(d)
*
* Vertically:
* Before(3): After(5):
* (a) (a)
* (b) (ab)
* (c) (b)
* (bc)