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Diffstat (limited to 'src/frames.c')
| -rw-r--r-- | src/frames.c | 247 |
1 files changed, 247 insertions, 0 deletions
diff --git a/src/frames.c b/src/frames.c new file mode 100644 index 0000000..4a065b3 --- /dev/null +++ b/src/frames.c @@ -0,0 +1,247 @@ +/* frames.c -- + + This file is part of the lzop file compressor. + + Copyright (C) 1996-2010 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., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 */ + + +/* +vi:ts=4:et +*/ + |