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/* frames.c --
This file is part of the lzop file compressor.
Copyright (C) 1996-2017 Markus Franz Xaver Johannes Oberhumer
All Rights Reserved.
lzop and the LZO library are free software; you can redistribute them
and/or modify them 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; see the file COPYING.
If not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Markus F.X.J. Oberhumer
<markus@oberhumer.com>
http://www.oberhumer.com/opensource/lzop/
*/
#include "conf.h"
#if defined(USE_FRAMES)
#include "screen.h"
/*************************************************************************
//
**************************************************************************/
static void recolor_line(screen_t *screen, int frame, int line,
lzo_bytep f, int len, int cy, int col)
{
unsigned char colmap[4];
int k;
UNUSED(screen);
UNUSED(frame);
UNUSED(line);
UNUSED(f);
UNUSED(len);
UNUSED(cy);
colmap[0] = 0; /* black background */
if (col <= 0x333)
{
/* palette */
static const unsigned char pal[4] = { 0x2, 0x3, 0x5, 0x5 };
colmap[1] = pal[ (col >> 8) & 3 ];
colmap[2] = pal[ (col >> 4) & 3 ];
colmap[3] = pal[ (col >> 0) & 3 ];
}
else
{
/* direct colors */
colmap[1] = (col >> 16) & 0x07;
colmap[2] = (col >> 8) & 0x07;
colmap[3] = (col >> 0) & 0x07;
}
#if 0
for (k = 0; k < len; k += 2)
if (f[k+1] != 0)
{
if (f[k] != ' ')
f[k] = '.';
f[k+1] = 0x10;
}
else
assert(f[k] == ' ');
#endif
#if 1
for (k = 0; k < len; k += 2)
{
lzo_bytep p = &f[k+1];
if (*p != 0)
*p = (colmap[ (*p >> 4) & 3 ] << 4) | colmap[ *p & 3 ];
}
#endif
#if 0
f[0*2+0] = f[77*2+0] = line / 10 + '0';
f[0*2+1] = f[77*2+1] = 0x07;
f[1*2+0] = f[78*2+0] = line % 10 + '0';
f[1*2+1] = f[78*2+1] = 0x07;
#if 1
if (line == 18 - 1)
{
char s[2*80+1];
int y = cy - 4;
sprintf(s," %2d: %2d %2d ", frame, 0, 0);
screen->putStringAttr(screen,s,0x70,33,y+1);
for (k = 0; k < 79; k++)
{
screen->putCharAttr(screen,k%10+'0',k%10==0?0x06:0x07,k,y+3);
screen->putCharAttr(screen,k%10+'0',k%10==0?0x06:0x07,k,y+3+18+1);
}
#if 1
usleep(200*1000);
#else
while (!screen->kbhit(screen))
;
while (screen->kbhit(screen))
if (getch() == 27)
exit(0);
#endif
}
#endif
#endif
}
static int random_color(void)
{
static const short c[6] = { 0x012, 0x021, 0x102, 0x120, 0x201, 0x210 };
int t;
lzo_uint32 seed;
seed = time(NULL);
#if 0
seed = seed * 69069L + 5;
t = (int)(seed >> 16) % 50;
#else
seed = seed * 0x015a4e35L + 1;
t = (int)(seed >> 16) % 50;
#endif
return (t < 6 ? c[t] : 0x333);
}
/*************************************************************************
//
**************************************************************************/
#include "frames.h"
void screen_show_frames(screen_t *screen)
{
int i, j, k;
lzo_uint out_len = UNCOMPRESSED_SIZE;
lzo_bytep frames = NULL;
lzo_bytep frames_mem = NULL;
int c_cx, c_cy;
const int len = 79 * 2; /* size of one line */
const int nframes = 19; /* number of frames */
const int lines = 18; /* intro */
const int total_lines = 24; /* head + help */
lzo_bool hit = 0;
int col;
lzo_uint32 c;
assert(acc_isatty(STDIN_FILENO));
assert(out_len == (lzo_uint) (lines * len * nframes));
#if 0
c = lzo_adler32(ADLER32_INIT_VALUE,compressed_frames,COMPRESSED_SIZE);
if (c != COMPRESSED_ADLER32)
exit(EXIT_ERROR);
#endif
frames = frames_mem = (lzo_bytep) malloc(UNCOMPRESSED_SIZE + 3);
if (frames == NULL)
return;
if ((lzo1x_decompress_safe(compressed_frames,COMPRESSED_SIZE,
frames,&out_len,NULL) != LZO_E_OK)
|| (out_len != UNCOMPRESSED_SIZE))
exit(EXIT_ERROR);
#if 0
c = lzo_adler32(ADLER32_INIT_VALUE,frames,UNCOMPRESSED_SIZE);
if (c != UNCOMPRESSED_ADLER32)
exit(EXIT_ERROR);
#endif
screen->getCursor(screen,&c_cx,&c_cy);
c_cy += total_lines;
if (c_cy >= screen->getRows(screen))
c_cy -= screen->scrollUp(screen,c_cy-screen->getRows(screen)+1);
c_cy -= total_lines;
if (c_cy < 0)
c_cy = 0;
c_cx = 0;
screen->setCursor(screen,c_cx,c_cy);
#if 1
for (k = 0; k < 4; k++)
screen->clearLine(screen,c_cy+k);
#endif
head();
screen->getCursor(screen,&c_cx,&c_cy);
#if 1
for (k = 0; k < lines; k++)
screen->clearLine(screen,c_cy+k);
#endif
screen->refresh(screen);
col = random_color();
for (i = 0; i < nframes && !hit; i++)
{
for (j = 0; j < lines; j++)
{
recolor_line(screen,i,j,frames,len,c_cy,col);
screen->updateLineN(screen,frames,c_cy+j,len);
frames += len;
}
screen->refresh(screen);
if (i == 0)
{
for (j = 0; !(hit = screen->kbhit(screen)) && j < 10; j++)
usleep(120*1000);
}
else
{
if (!(hit = screen->kbhit(screen)))
usleep(60*1000);
}
}
free(frames_mem);
for (k = 0; k < lines; k++)
screen->clearLine(screen,c_cy+k);
screen->refresh(screen);
help();
UNUSED(c);
}
#endif /* USE_FRAMES */
/* vim:set ts=4 sw=4 et: */
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