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/* Synaesthesia - program to display sound graphically
Copyright (C) 1997 Paul Francis Harrison
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
675 Mass Ave, Cambridge, MA 02139, USA.
The author may be contacted at:
pfh@yoyo.cc.monash.edu.au
or
27 Bond St., Mt. Waverley, 3149, Melbourne, Australia
*/
#include <string.h>
#include <stdio.h>
#include <stdint.h>
#include "syna.h"
#ifndef X_DISPLAY_MISSING
extern "C" {
#include "xlib.h"
}
static xlibparam xparams = { 0, 0, 0 };
static xdisplay *d;
static bool lowColor, paletteInstalled;
static unsigned char mapping[64];
static int setOnePalette(int i,int r,int g,int b) {
return xalloc_color(d,r*257,g*257,b*257,0);
}
bool XScreen::init(int xHint,int yHint,int widthHint,int heightHint,bool fullscreen) {
d = xalloc_display("Synaesthesia",xHint,yHint,widthHint,heightHint,&xparams);
if (d == 0) {
printf("Opening an X window failed.\n");
return false;
}
if (!alloc_image(d)) error("allocating window buffer");
outWidth = widthHint;
outHeight = heightHint;
//XMoveWindow(d->display,d->window,xHint,yHint);
#define BOUND(x) ((x) > 255 ? 255 : (x))
#define PEAKIFY(x) BOUND((x) - (x)*(255-(x))/255/2)
lowColor = (d->depth <= 8);
/* if (!lowColor) {
for(i=0;i<256;i++)
attempt(setPalette(i,PEAKIFY((i&15*16)),
PEAKIFY((i&15)*16+(i&15*16)/4),
PEAKIFY((i&15)*16)),
" in X: could not allocate sufficient palette entries");
} else {
for(i=0;i<64;i++)
attempt(mapping[i] = setPalette(i,PEAKIFY((i&7*8)*4),
PEAKIFY((i&7)*32+(i&7*8)*2),
PEAKIFY((i&7)*32)),
" in X: could not allocate sufficient palette entries");
}*/
return true;
}
void XScreen::setPalette(unsigned char *palette) {
int i;
if (paletteInstalled)
xfree_colors(d);
if (!lowColor) {
for(i=0;i<256;i++)
attempt(setOnePalette(i,palette[i*3],palette[i*3+1],palette[i*3+2]),
" in X: could not allocate sufficient palette entries");
} else {
const int array[8] = {0,2,5,7,9,11,13,15};
for(i=0;i<64;i++) {
int p = (array[i&7]+array[i/8]*16) *3;
attempt(mapping[i] = setOnePalette(i,palette[p],palette[p+1],palette[p+2]),
" in X: could not allocate sufficient palette entries");
}
}
paletteInstalled = true;
}
void XScreen::end() {
if (paletteInstalled)
xfree_colors(d);
xfree_display(d);
}
void XScreen::inputUpdate(int &mouseX,int &mouseY,int &mouseButtons,char &keyHit) {
int newWidth,newHeight;
if (xsize_update(d,&newWidth,&newHeight))
if (newWidth != outWidth || newHeight != outHeight)
allocOutput(newWidth,newHeight);
xmouse_update(d);
mouseX = xmouse_x(d);
mouseY = xmouse_y(d);
mouseButtons = xmouse_buttons(d);
keyHit = xkeyboard_query(d);
}
void XScreen::show(void) {
register uint32_t *ptr2 = (uint32_t*)output;
uint32_t *ptr1 = (uint32_t*)d->back;
int i = outWidth*outHeight/sizeof(uint32_t);
if (lowColor)
do {
register uint32_t const r1 = *(ptr2++);
register uint32_t const r2 = *(ptr2++);
//if (r1 || r2) {
#ifdef LITTLEENDIAN
register uint32_t const v =
mapping[((r1&0xe0ul)>>5)|((r1&0xe000ul)>>10)]
|mapping[((r1&0xe00000ul)>>21)|((r1&0xe0000000ul)>>26)]*256U;
*(ptr1++) = v |
mapping[((r2&0xe0ul)>>5)|((r2&0xe000ul)>>10)]*65536U
|mapping[((r2&0xe00000ul)>>21)|((r2&0xe0000000ul)>>26)]*16777216U;
#else
register uint32_t const v =
mapping[((r2&0xe0ul)>>5)|((r2&0xe000ul)>>10)]
|mapping[((r2&0xe00000ul)>>21)|((r2&0xe0000000ul)>>26)]*256U;
*(ptr1++) = v |
mapping[((r1&0xe0ul)>>5)|((r1&0xe000ul)>>10)]*65536U
|mapping[((r1&0xe00000ul)>>21)|((r1&0xe0000000ul)>>26)]*16777216U;
#endif
//} else ptr1++;
} while (--i);
else
do {
// Asger Alstrup Nielsen's (alstrup@diku.dk)
// optimized 32 bit screen loop
register uint32_t const r1 = *(ptr2++);
register uint32_t const r2 = *(ptr2++);
//if (r1 || r2) {
#ifdef LITTLEENDIAN
register uint32_t const v =
((r1 & 0x000000f0ul) >> 4)
| ((r1 & 0x0000f000ul) >> 8)
| ((r1 & 0x00f00000ul) >> 12)
| ((r1 & 0xf0000000ul) >> 16);
*(ptr1++) = v |
((r2 & 0x000000f0ul) << 16 -4)
| ((r2 & 0x0000f000ul) << 16 -8)
| ((r2 & 0x00f00000ul) << 16 -12)
| ((r2 & 0xf0000000ul) << 16 -16);
#else
register uint32_t const v =
((r2 & 0x000000f0ul) >> 4)
| ((r2 & 0x0000f000ul) >> 8)
| ((r2 & 0x00f00000ul) >> 12)
| ((r2 & 0xf0000000ul) >> 16);
*(ptr1++) = v |
((r1 & 0x000000f0ul) << 16 -4)
| ((r1 & 0x0000f000ul) << 16 -8)
| ((r1 & 0x00f00000ul) << 16 -12)
| ((r1 & 0xf0000000ul) << 16 -16);
#endif
//} else ptr1++;
} while (--i);
xflip_buffers(d);
draw_screen(d);
XFlush(d->display);
}
#endif
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