source: libcaca/trunk/examples/swallow.c @ 2821

Last change on this file since 2821 was 2821, checked in by Sam Hocevar, 11 years ago

Starting refactoring to get rid of libcucul. The initial reason for the
split is rendered moot by the plugin system: when enabled, binaries do
not link directly with libX11 or libGL. I hope this is a step towards
more consisteny and clarity.

  • Property svn:keywords set to Id
File size: 3.1 KB
Line 
1/*
2 *  swallow       swallow another libcaca application
3 *  Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
4 *                All Rights Reserved
5 *
6 *  $Id: swallow.c 2821 2008-09-27 13:12:46Z sam $
7 *
8 *  This program is free software. It comes without any warranty, to
9 *  the extent permitted by applicable law. You can redistribute it
10 *  and/or modify it under the terms of the Do What The Fuck You Want
11 *  To Public License, Version 2, as published by Sam Hocevar. See
12 *  http://sam.zoy.org/wtfpl/COPYING for more details.
13 */
14
15#include "config.h"
16
17#if !defined(__KERNEL__)
18#   include <stdio.h>
19#   include <string.h>
20#   include <stdlib.h>
21#endif
22
23#include "caca.h"
24
25int main(int argc, char **argv)
26{
27    char cmd[BUFSIZ];
28    static caca_canvas_t *cv, *app;
29    static caca_display_t *dp;
30    uint8_t *buf[4];
31    long int bytes[4], total[4];
32    FILE *f[4];
33    int w, h, i;
34
35    if(argc < 5)
36    {
37        fprintf(stderr, "usage: %s <cmd1> <cmd2> <cmd3> <cmd4>\n", argv[0]);
38        return 1;
39    }
40
41    cv = caca_create_canvas(0, 0);
42    app = caca_create_canvas(0, 0);
43    dp = caca_create_display(cv);
44
45    if(cv == NULL || app == NULL )
46    {
47        printf("Can't created canvas\n");
48        return -1;
49    }
50    if(dp == NULL)
51    {
52        printf("Can't create display\n");
53        return -1;
54    }
55
56    w = (caca_get_canvas_width(cv) - 4) / 2;
57    h = (caca_get_canvas_height(cv) - 6) / 2;
58
59    if(w < 0 || h < 0)
60        return 1;
61
62    caca_set_color_ansi(cv, CACA_WHITE, CACA_BLUE);
63    caca_draw_line(cv, 0, 0, caca_get_canvas_width(cv) - 1, 0, ' ');
64    caca_printf(cv, caca_get_canvas_width(cv) / 2 - 10, 0,
65                 "libcaca multiplexer");
66
67    for(i = 0; i < 4; i++)
68    {
69        buf[i] = NULL;
70        total[i] = bytes[i] = 0;
71        sprintf(cmd, "CACA_DRIVER=raw CACA_GEOMETRY=%ix%i %s",
72                     w, h, argv[i + 1]);
73        f[i] = popen(cmd, "r");
74        if(!f[i])
75            return 1;
76        caca_printf(cv, (w + 2) * (i / 2) + 1,
77                         (h + 2) * ((i % 2) + 1), "%s", argv[i + 1]);
78    }
79
80    for(;;)
81    {
82        caca_event_t ev;
83        int ret = caca_get_event(dp, CACA_EVENT_ANY, &ev, 0);
84
85        if(ret && caca_get_event_type(&ev) & CACA_EVENT_KEY_PRESS)
86            break;
87
88        for(i = 0; i < 4; i++)
89        {
90            bytes[i] = caca_import_memory(app, buf[i], total[i], "caca");
91
92            if(bytes[i] > 0)
93            {
94                total[i] -= bytes[i];
95                memmove(buf[i], buf[i] + bytes[i], total[i]);
96
97                caca_blit(cv, (w + 2) * (i / 2) + 1,
98                               (h + 2) * (i % 2) + 2, app, NULL);
99                caca_refresh_display(dp);
100            }
101            else if(bytes[i] == 0)
102            {
103                buf[i] = realloc(buf[i], total[i] + 128);
104                fread(buf[i] + total[i], 128, 1, f[i]);
105                total[i] += 128;
106            }
107            else
108            {
109                fprintf(stderr, "%s: corrupted input %i\n", argv[0], i);
110                return -1;
111            }
112        }
113    }
114
115    /* Clean up */
116    caca_free_display(dp);
117    caca_free_canvas(cv);
118    caca_free_canvas(app);
119
120    return 0;
121}
122
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