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snes9xgx/source/ngc/ftfont.cpp

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/****************************************************************************
* Snes9x 1.50
*
* Nintendo Gamecube Screen Font Driver
*
* Uses libfreetype 2.2.1 compiled for GC with TTF support only.
* TTF only reduces the library by some 900k bytes!
*
* Visit - http://www.freetype.org !
*
* **WARNING***
*
* ONLY USE GUARANTEED PATENT FREE FONTS.
* THOSE IN YOUR WINDOWS\FONTS DIRECTORY ARE COPYRIGHT
* AND MAY NOT BE DISTRIBUTED!
*
* softdev July 2006
* crunchy2 June 2007
****************************************************************************/
#include <gccore.h>
#include <ogcsys.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <ft2build.h>
#include FT_FREETYPE_H
#include "video.h"
#include "ftfont.h"
#include "dkpro.h"
#include "tempgfx.h"
#include "aram.h"
#include <zlib.h>
/*** Globals ***/
FT_Library ftlibrary;
FT_Face face;
FT_GlyphSlot slot;
FT_UInt glyph_index;
static unsigned int fonthi, fontlo;
extern char fontface[]; /*** From fontface.s ***/
extern int fontsize; /*** From fontface.s ***/
extern int screenheight;
extern unsigned int *xfb[2];
extern int whichfb;
/**
* Unpack the devkit pro logo
*/
static u32 *dkproraw;
static u32 *backdrop; /*** Permanent backdrop ***/
static void unpackbackdrop ();
unsigned int getcolour (u8 r1, u8 g1, u8 b1);
void DrawLineFast( int startx, int endx, int y, u8 r, u8 g, u8 b );
u32 getrgb( u32 ycbr, u32 low );
/**
* Initialisation of libfreetype
*/
int
FT_Init ()
{
int err;
err = FT_Init_FreeType (&ftlibrary);
if (err)
return 1;
err =
FT_New_Memory_Face (ftlibrary, (FT_Byte *) fontface, fontsize, 0, &face);
if (err)
return 1;
setfontsize (16);
slot = face->glyph;
return 0;
}
/**
* setfontsize
*
* Set the screen font size in pixels
*/
void
setfontsize (int pixelsize)
{
int err;
err = FT_Set_Pixel_Sizes (face, 0, pixelsize);
if (err)
printf ("Error setting pixel sizes!");
}
static void
DrawCharacter (FT_Bitmap * bmp, FT_Int x, FT_Int y)
{
FT_Int i, j, p, q;
FT_Int x_max = x + bmp->width;
FT_Int y_max = y + bmp->rows;
int spos;
unsigned int pixel;
int c;
for (i = x, p = 0; i < x_max; i++, p++)
{
for (j = y, q = 0; j < y_max; j++, q++)
{
if (i < 0 || j < 0 || i >= 640 || j >= screenheight)
continue;
/*** Convert pixel position to GC int sizes ***/
spos = (j * 320) + (i >> 1);
pixel = xfb[whichfb][spos];
c = bmp->buffer[q * bmp->width + p];
/*** Cool Anti-Aliasing doesn't work too well at hires on GC ***/
if (c > 128)
{
if (i & 1)
pixel = (pixel & 0xffff0000) | fontlo;
else
pixel = ((pixel & 0xffff) | fonthi);
xfb[whichfb][spos] = pixel;
}
}
}
}
/**
* DrawText
*
* Place the font bitmap on the screen
*/
void
DrawText (int x, int y, char *text)
{
int px, n;
int i;
int err;
int value, count;
n = strlen (text);
if (n == 0)
return;
/*** x == -1, auto centre ***/
if (x == -1)
{
value = 0;
px = 0;
}
else
{
value = 1;
px = x;
}
for (count = value; count < 2; count++)
{
/*** Draw the string ***/
for (i = 0; i < n; i++)
{
err = FT_Load_Char (face, text[i], FT_LOAD_RENDER);
if (err)
{
printf ("Error %c %d\n", text[i], err);
continue; /*** Skip unprintable characters ***/
}
if (count)
DrawCharacter (&slot->bitmap, px + slot->bitmap_left,
y - slot->bitmap_top);
px += slot->advance.x >> 6;
}
px = (640 - px) >> 1;
}
}
/**
* setfontcolour
*
* Uses RGB triple values.
*/
void
setfontcolour (u8 r, u8 g, u8 b)
{
u32 fontcolour;
fontcolour = getcolour (r, g, b);
fonthi = fontcolour & 0xffff0000;
fontlo = fontcolour & 0xffff;
}
/**
* Licence Information
*
* THIS MUST NOT BE REMOVED IN ANY DERIVATIVE WORK.
*/
void
licence ()
{
int ypos = ((screenheight - (282 + dkpro_HEIGHT)) >> 1);
if (screenheight == 480)
ypos += 42;
else
ypos += 24;
setfontcolour (0x00, 0x00, 0x00);
DrawText (-1, ypos += 40, "Snes9x - Copyright (c) Snes9x Team 1996 - 2006");
DrawText (-1, ypos += 40, "This is free software, and you are welcome to");
DrawText (-1, ypos += 20, "redistribute it under the conditions of the");
DrawText (-1, ypos += 20, "GNU GENERAL PUBLIC LICENSE Version 2");
DrawText (-1, ypos +=
20, "Additionally, the developers of this port disclaims");
DrawText (-1, ypos +=
20, "all copyright interests in the Nintendo GameCube");
DrawText (-1, ypos +=
20, "porting code. You are free to use it as you wish");
DrawText (-1, ypos += 40, "Developed with DevkitPPC and libOGC");
DrawText (-1, ypos += 20, "http://www.devkitpro.org");
}
/**
* dkunpack
*
* Support function to expand the DevkitPro logo
*/
int
dkunpack ()
{
unsigned long res, inbytes, outbytes;
inbytes = dkpro_COMPRESSED;
outbytes = dkpro_RAW;
dkproraw = (u32 *) malloc (dkpro_RAW + 16);
res = uncompress ((Bytef *) dkproraw, &outbytes, (Bytef *) dkpro, inbytes);
if (res == Z_OK)
return 1;
return 0;
}
/**
* showdklogo
*
* Display the DevkitPro logo
*/
void
showdklogo ()
{
int w, h, p, dispoffset;
p = 0;
dispoffset =
((screenheight != 480 ? 360 : 350) * 320) + ((640 - dkpro_WIDTH) >> 2);
dkunpack ();
for (h = 0; h < dkpro_HEIGHT; h++)
{
for (w = 0; w < dkpro_WIDTH >> 1; w++)
{
if (dkproraw[p] != 0x00800080)
xfb[whichfb][dispoffset + w] = dkproraw[p++];
else
p++;
}
dispoffset += 320;
}
free (dkproraw);
}
/**
* getcolour
*
* Simply converts RGB to Y1CbY2Cr format
*
* I got this from a pastebin, so thanks to whoever originally wrote it!
*/
unsigned int
getcolour (u8 r1, u8 g1, u8 b1)
{
int y1, cb1, cr1, y2, cb2, cr2, cb, cr;
u8 r2, g2, b2;
r2 = r1;
g2 = g1;
b2 = b1;
y1 = (299 * r1 + 587 * g1 + 114 * b1) / 1000;
cb1 = (-16874 * r1 - 33126 * g1 + 50000 * b1 + 12800000) / 100000;
cr1 = (50000 * r1 - 41869 * g1 - 8131 * b1 + 12800000) / 100000;
y2 = (299 * r2 + 587 * g2 + 114 * b2) / 1000;
cb2 = (-16874 * r2 - 33126 * g2 + 50000 * b2 + 12800000) / 100000;
cr2 = (50000 * r2 - 41869 * g2 - 8131 * b2 + 12800000) / 100000;
cb = (cb1 + cb2) >> 1;
cr = (cr1 + cr2) >> 1;
return ((y1 << 24) | (cb << 16) | (y2 << 8) | cr);
}
/**
* Unpackbackdrop
*/
void
unpackbackdrop ()
{
unsigned long res, inbytes, outbytes;
unsigned int colour;
int offset;
int i;
backdrop = (unsigned int *) malloc (screenheight * 1280);
colour = getcolour (0x00, 0x00, 0x00);
/*** Fill with black for now ***/
for (i = 0; i < (320 * screenheight); i++)
backdrop[i] = colour;
/*** If it's PAL50, need to move down a few lines ***/
offset = ((screenheight - 480) >> 1) * 320;
inbytes = tempgfx_COMPRESSED;
outbytes = tempgfx_RAW;
res =
uncompress ((Bytef *) backdrop + offset, &outbytes, (Bytef *) tempgfx,
inbytes);
/*** Now store the backdrop in ARAM ***/
ARAMPut ((char *) backdrop, (char *) AR_BACKDROP, 640 * screenheight * 2);
free (backdrop);
}
/**
* Display legal copyright and licence
*/
void
legal ()
{
unpackbackdrop ();
clearscreen ();
licence ();
showdklogo ();
showscreen ();
}
/**
* Wait for user to press A
*/
void
WaitButtonA ()
{
while (PAD_ButtonsDown (0) & PAD_BUTTON_A);
while (!(PAD_ButtonsDown (0) & PAD_BUTTON_A));
}
/**
* Wait for user to press A or B. Returns 0 = B; 1 = A
*/
int
WaitButtonAB ()
{
int btns;
while ( (PAD_ButtonsDown (0) & (PAD_BUTTON_A | PAD_BUTTON_B)) );
while ( TRUE )
{
btns = PAD_ButtonsDown (0);
if ( btns & PAD_BUTTON_A )
return 1;
else if ( btns & PAD_BUTTON_B )
return 0;
}
}
/**
* Show a prompt
*/
void
WaitPrompt (char *msg)
{
int ypos = (screenheight - 64) >> 1;
if (screenheight == 480)
ypos += 52;
else
ypos += 32;
clearscreen ();
DrawText (-1, ypos, msg);
ypos += 30;
DrawText (-1, ypos, "Press A to continue");
showscreen ();
WaitButtonA ();
}
/**
* Show a prompt with choice of two options. Returns 1 if A button was pressed
and 0 if B button was pressed.
*/
int
WaitPromptChoice (char *msg, char *bmsg, char *amsg)
{
int ypos = (screenheight - 64) >> 1;
if (screenheight == 480)
ypos += 37;
else
ypos += 17;
clearscreen ();
DrawText (-1, ypos, msg);
ypos += 60;
char txt[80];
sprintf (txt, "B = %s : A = %s", bmsg, amsg);
DrawText (-1, ypos, txt);
showscreen ();
return WaitButtonAB ();
}
/**
* Show an action in progress
*/
void
ShowAction (char *msg)
{
int ypos = (screenheight - 30) >> 1;
if (screenheight == 480)
ypos += 52;
else
ypos += 32;
clearscreen ();
DrawText (-1, ypos, msg);
showscreen ();
}
/****************************************************************************
* Generic Menu Routines
****************************************************************************/
void
DrawMenu (char items[][20], char *title, int maxitems, int selected)
{
int i, w;
int ypos;
#if 0
int bounding[] = { 80, 40, 600, 40, 560, 94, 40, 94 };
int base[] = { 80, screenheight - 90, 600, screenheight - 90,
560, screenheight - 40, 40, screenheight - 40
};
#endif
ypos = (screenheight - (maxitems * 32)) >> 1;
if (screenheight == 480)
ypos += 52;
else
ypos += 32;
clearscreen ();
#if 0
DrawPolygon (4, bounding, 0x00, 0x00, 0xc0);
DrawPolygon (4, base, 0x00, 0x00, 0xc0);
setfontsize (32);
DrawText (-1, 80, title);
DrawText (-1, screenheight - 50, "Snes9x - GX 2.0");
#endif
setfontsize (24);
setfontcolour (0, 0, 0);
for (i = 0; i < maxitems; i++)
{
if (i == selected)
{
for( w = 0; w < 32; w++ )
DrawLineFast( 30, 610, (i << 5) + (ypos-26) + w, 0x80, 0x80, 0x80 );
setfontcolour (0xff, 0xff, 0xff);
DrawText (-1, (i << 5) + ypos, items[i]);
setfontcolour (0x00, 0x00, 0x00);
}
else
DrawText (-1, i * 32 + ypos, items[i]);
}
showscreen ();
}
/****************************************************************************
* RunMenu
*
* Call this with the menu array defined in menu.cpp
* It's here to keep all the font / interface stuff together.
****************************************************************************/
int menu = 0;
int
RunMenu (char items[][20], int maxitems, char *title)
{
int redraw = 1;
int quit = 0;
short p;
int ret = 0;
signed char a;
//while (!(PAD_ButtonsDown (0) & PAD_BUTTON_B) && (quit == 0))
while (quit == 0)
{
if (redraw)
{
DrawMenu (&items[0], title, maxitems, menu);
redraw = 0;
}
p = PAD_ButtonsDown (0);
a = PAD_StickY (0);
/*** Look for up ***/
if ((p & PAD_BUTTON_UP) || (a > 70))
{
redraw = 1;
menu--;
}
/*** Look for down ***/
if ((p & PAD_BUTTON_DOWN) || (a < -70))
{
redraw = 1;
menu++;
}
if (p & PAD_BUTTON_A)
{
quit = 1;
ret = menu;
}
if (p & PAD_BUTTON_B)
{
quit = -1;
ret = -1;
}
if (menu == maxitems)
menu = 0;
if (menu < 0)
menu = maxitems - 1;
}
if (PAD_ButtonsDown (0) & PAD_BUTTON_B)
{
/*** Wait for B button to be released before proceeding ***/
while (PAD_ButtonsDown (0) & PAD_BUTTON_B)
VIDEO_WaitVSync();
return -1;
}
return ret;
}
/****************************************************************************
* DrawLine
*
* Quick'n'Dirty Bresenham line drawing routine.
****************************************************************************/
#define SIGN(x) ((x<0)?-1:((x>0)?1:0))
void
DrawLine (int x1, int y1, int x2, int y2, u8 r, u8 g, u8 b)
{
u32 colour, pixel;
u32 colourhi, colourlo;
int i, dx, dy, sdx, sdy, dxabs, dyabs, x, y, px, py;
int sp;
colour = getcolour (r, g, b);
colourhi = colour & 0xffff0000;
colourlo = colour & 0xffff;
dx = x2 - x1; /*** Horizontal distance ***/
dy = y2 - y1; /*** Vertical distance ***/
dxabs = abs (dx);
dyabs = abs (dy);
sdx = SIGN (dx);
sdy = SIGN (dy);
x = dyabs >> 1;
y = dxabs >> 1;
px = x1;
py = y1;
sp = (py * 320) + (px >> 1);
pixel = xfb[whichfb][sp];
/*** Plot this pixel ***/
if (px & 1)
xfb[whichfb][sp] = (pixel & 0xffff0000) | colourlo;
else
xfb[whichfb][sp] = (pixel & 0xffff) | colourhi;
if (dxabs >= dyabs) /*** Mostly horizontal ***/
{
for (i = 0; i < dxabs; i++)
{
y += dyabs;
if (y >= dxabs)
{
y -= dxabs;
py += sdy;
}
px += sdx;
sp = (py * 320) + (px >> 1);
pixel = xfb[whichfb][sp];
if (px & 1)
xfb[whichfb][sp] = (pixel & 0xffff0000) | colourlo;
else
xfb[whichfb][sp] = (pixel & 0xffff) | colourhi;
}
}
else
{
for (i = 0; i < dyabs; i++)
{
x += dxabs;
if (x >= dyabs)
{
x -= dyabs;
px += sdx;
}
py += sdy;
sp = (py * 320) + (px >> 1);
pixel = xfb[whichfb][sp];
if (px & 1)
xfb[whichfb][sp] = (pixel & 0xffff0000) | colourlo;
else
xfb[whichfb][sp] = (pixel & 0xffff) | colourhi;
}
}
}
/****************************************************************************
* Progress Bar
*
* Show the user what's happening
****************************************************************************/
void
ShowProgress (char *msg, int done, int total)
{
int ypos = (screenheight - 30) >> 1;
if (screenheight == 480)
ypos += 52;
else
ypos += 32;
int xpos;
int i;
clearscreen ();
DrawText (-1, ypos, msg);
/*** Draw a white outline box ***/
for (i = 380; i < 401; i++)
DrawLine (100, i, 540, i, 0xff, 0xff, 0xff);
/*** Show progess ***/
xpos = (int) (((float) done / (float) total) * 438);
for (i = 381; i < 400; i++)
DrawLine (101, i, 101 + xpos, i, 0x00, 0x00, 0x80);
showscreen ();
}
/****************************************************************************
* DrawPolygon
****************************************************************************/
void
DrawPolygon (int vertices, int varray[], u8 r, u8 g, u8 b)
{
int i;
for (i = 0; i < vertices - 1; i++)
{
DrawLine (varray[(i << 1)], varray[(i << 1) + 1], varray[(i << 1) + 2],
varray[(i << 1) + 3], r, g, b);
}
DrawLine (varray[0], varray[1], varray[(vertices << 1) - 2],
varray[(vertices << 1) - 1], r, g, b);
}
/*****************************************************************************
* Draw Line Fast
*
* This routine requires that start and endx are 32bit aligned.
* It tries to perform a semi-transparency over the existing image.
*****************************************************************************/
#define SRCWEIGHT 0.7f
#define DSTWEIGHT (1.0f - SRCWEIGHT)
static inline u8 c_adjust( u8 c , float weight )
{
return (u8)((float)c * weight);
}
void DrawLineFast( int startx, int endx, int y, u8 r, u8 g, u8 b )
{
int width;
u32 offset;
int i;
u32 colour, clo, chi;
u32 lo,hi;
u8 *s, *d;
//colour = getcolour(r, g, b);
colour = ( r << 16 | g << 8 | b );
d = (u8 *)&colour;
d[1] = c_adjust(d[1], DSTWEIGHT);
d[2] = c_adjust(d[2], DSTWEIGHT);
d[3] = c_adjust(d[3], DSTWEIGHT);
width = ( endx - startx ) >> 1;
offset = ( y << 8 ) + ( y << 6 ) + ( startx >> 1 );
for ( i = 0; i < width; i++ )
{
lo = getrgb(xfb[whichfb][offset], 0);
hi = getrgb(xfb[whichfb][offset], 1);
s = (u8 *)&hi;
s[1] = ( ( c_adjust(s[1],SRCWEIGHT) ) + d[1] );
s[2] = ( ( c_adjust(s[2],SRCWEIGHT) ) + d[2] );
s[3] = ( ( c_adjust(s[3],SRCWEIGHT) ) + d[3] );
s = (u8 *)&lo;
s[1] = ( ( c_adjust(s[1],SRCWEIGHT) ) + d[1] );
s[2] = ( ( c_adjust(s[2],SRCWEIGHT) ) + d[2] );
s[3] = ( ( c_adjust(s[3],SRCWEIGHT) ) + d[3] );
clo = getcolour( s[1], s[2], s[3] );
s = (u8 *)&hi;
chi = getcolour( s[1], s[2], s[3] );
xfb[whichfb][offset++] = (chi & 0xffff0000 ) | ( clo & 0xffff) ;
}
}
/**
* Ok, I'm useless with Y1CBY2CR colour.
* So convert back to RGB so I can work with it -;)
*/
u32 getrgb( u32 ycbr, u32 low )
{
u8 r,g,b;
u32 y;
s8 cb,cr;
if ( low )
y = ( ycbr & 0xff00 ) >> 8;
else
y = ( ycbr & 0xff000000 ) >> 24;
cr = ycbr & 0xff;
cb = ( ycbr & 0xff0000 ) >> 16;
cr -= 128;
cb -= 128;
r = (u8)((float)y + 1.371 * (float)cr);
g = (u8)((float)y - 0.698 * (float)cr - 0.336 * (float)cb);
b = (u8)((float)y + 1.732 * (float)cb);
return (u32)( r << 16 | g << 8 | b );
}
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