libvo/vo_caca.c

   1 /*
   2  * video output driver for libcaca
   3  *
   4  * by Pigeon <pigeon@pigeond.net>
   5  *
   6  * Some functions/codes/ideas are from x11 and aalib vo
   7  *
   8  * TODO: support draw_alpha?
   9  *
  10  * This file is part of MPlayer.
  11  *
  12  * MPlayer is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * MPlayer is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  *
  22  * You should have received a copy of the GNU General Public License along
  23  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  24  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  25  */
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <sys/stat.h>
  30 #include <unistd.h>
  31 #include <string.h>
  32 #include <time.h>
  33 #include <errno.h>
  34
  35 #include "config.h"
  36 #include "video_out.h"
  37 #include "video_out_internal.h"
  38 #include "sub/sub.h"
  39
  40 #include "input/keycodes.h"
  41 #include "mp_msg.h"
  42 #include "mp_fifo.h"
  43
  44 #include <caca.h>
  45 #ifdef CACA_API_VERSION_1
  46   /* Include the pre-1.x compatibility header.
  47    * Once libcaca 1.x is widespread, vo_caca should be fully
  48    * converted to the new API. A patch exists:
  49    * http://lists.mplayerhq.hu/pipermail/mplayer-dev-eng/2006-July/044669.html
  50    */
  51   #include <caca0.h>
  52 #endif
  53
  54 static const vo_info_t info = {
  55   "libcaca",
  56   "caca",
  57   "Pigeon <pigeon@pigeond.net>",
  58   ""
  59 };
  60
  61 const LIBVO_EXTERN (caca)
  62
  63 /* caca stuff */
  64 static struct caca_bitmap *cbitmap = NULL;
  65
  66 /* image infos */
  67 static int image_format;
  68 static int image_width;
  69 static int image_height;
  70
  71 static int screen_w, screen_h;
  72
  73 /* We want 24bpp always for now */
  74 static unsigned int bpp = 24;
  75 static unsigned int depth = 3;
  76 static unsigned int rmask = 0xff0000;
  77 static unsigned int gmask = 0x00ff00;
  78 static unsigned int bmask = 0x0000ff;
  79 static unsigned int amask = 0;
  80
  81 #define MESSAGE_SIZE 512
  82 #define MESSAGE_DURATION 5
  83
  84 static time_t stoposd = 0;
  85 static int showosdmessage = 0;
  86 static char osdmessagetext[MESSAGE_SIZE];
  87 static char posbar[MESSAGE_SIZE];
  88
  89 static int osdx = 0, osdy = 0;
  90 static int posbary = 2;
  91
  92 static void osdmessage(int duration, const char *fmt, ...)
  93 {
  94     /*
  95      * for outputting a centered string at the bottom
  96      * of our window for a while
  97      */
  98     va_list ar;
  99     char m[MESSAGE_SIZE];
 100
 101     va_start(ar, fmt);
 102     vsprintf(m, fmt, ar);
 103     va_end(ar);
 104     strcpy(osdmessagetext, m);
 105
 106     showosdmessage = 1;
 107     stoposd = time(NULL) + duration;
 108     osdx = (screen_w - strlen (osdmessagetext)) / 2;
 109     posbar[0] = '\0';
 110 }
 111
 112 static void osdpercent(int duration, int min, int max, int val, const char *desc, const char *unit)
 113 {
 114     /*
 115      * prints a bar for setting values
 116      */
 117     float step;
 118     int where, i;
 119
 120     step = (float)screen_w / (float)(max - min);
 121     where = (val - min) * step;
 122     osdmessage (duration, "%s: %i%s", desc, val, unit);
 123     posbar[0] = '|';
 124     posbar[screen_w - 1] = '|';
 125
 126     for (i = 0; i < screen_w; i++)
 127     {
 128         if (i == where)
 129             posbar[i] = '#';
 130         else
 131             posbar[i] = '-';
 132     }
 133
 134     if (where != 0)
 135         posbar[0] = '|';
 136
 137     if (where != (screen_w - 1))
 138         posbar[screen_w - 1] = '|';
 139
 140     posbar[screen_w] = '\0';
 141 }
 142
 143 static int resize(void)
 144 {
 145     screen_w = caca_get_width();
 146     screen_h = caca_get_height();
 147
 148     if (cbitmap)
 149         caca_free_bitmap(cbitmap);
 150
 151     cbitmap = caca_create_bitmap(bpp, image_width, image_height,
 152                                 depth * image_width, rmask, gmask, bmask,
 153                                 amask);
 154
 155     if (!cbitmap)
 156         mp_msg(MSGT_VO, MSGL_FATAL, "vo_caca: caca_create_bitmap failed!\n");
 157
 158     return 0;
 159 }
 160
 161 static int config(uint32_t width, uint32_t height, uint32_t d_width,
 162         uint32_t d_height, uint32_t flags, char *title, uint32_t format)
 163 {
 164     image_height = height;
 165     image_width = width;
 166     image_format = format;
 167
 168     showosdmessage = 0;
 169     posbar[0] = '\0';
 170
 171     return resize ();
 172 }
 173
 174 static int draw_frame(uint8_t *src[])
 175 {
 176     caca_draw_bitmap(0, 0, screen_w, screen_h, cbitmap, src[0]);
 177     return 0;
 178 }
 179
 180 static int draw_slice(uint8_t *src[], int stride[], int w, int h, int x, int y)
 181 {
 182     return 0;
 183 }
 184
 185 static void flip_page(void)
 186 {
 187
 188     if (showosdmessage)
 189     {
 190         if (time(NULL) >= stoposd)
 191         {
 192             showosdmessage = 0;
 193             if (*posbar)
 194                 posbar[0] = '\0';
 195         } else {
 196             caca_putstr(osdx, osdy, osdmessagetext);
 197
 198             if (*posbar)
 199                 caca_putstr(0, posbary, posbar);
 200         }
 201     }
 202
 203     caca_refresh();
 204 }
 205
 206 static void check_events (void)
 207 {
 208     unsigned int cev;
 209
 210     if ((cev = caca_get_event(CACA_EVENT_ANY)))
 211     {
 212         if (cev & CACA_EVENT_RESIZE)
 213         {
 214             caca_refresh();
 215             resize();
 216         } else if (cev & CACA_EVENT_KEY_RELEASE)
 217         {
 218             int key = (cev & 0x00ffffff);
 219             enum caca_feature cf;
 220
 221             switch (key) {
 222             case 'd':
 223             case 'D':
 224               /* Toggle dithering method */
 225               cf = 1 + caca_get_feature(CACA_DITHERING);
 226               if (cf > CACA_DITHERING_MAX)
 227                   cf = CACA_DITHERING_MIN;
 228               caca_set_feature(cf);
 229               osdmessage(MESSAGE_DURATION, "Using %s", caca_get_feature_name(cf));
 230               break;
 231
 232             case 'a':
 233             case 'A':
 234               /* Toggle antialiasing method */
 235               cf = 1 + caca_get_feature(CACA_ANTIALIASING);
 236               if (cf > CACA_ANTIALIASING_MAX)
 237                   cf = CACA_ANTIALIASING_MIN;
 238               caca_set_feature(cf);
 239               osdmessage(MESSAGE_DURATION, "Using %s", caca_get_feature_name(cf));
 240               break;
 241
 242             case 'b':
 243             case 'B':
 244               /* Toggle background method */
 245               cf = 1 + caca_get_feature(CACA_BACKGROUND);
 246               if (cf > CACA_BACKGROUND_MAX)
 247                   cf = CACA_BACKGROUND_MIN;
 248               caca_set_feature(cf);
 249               osdmessage(MESSAGE_DURATION, "Using %s", caca_get_feature_name(cf));
 250               break;
 251
 252             case CACA_KEY_UP:
 253               mplayer_put_key(KEY_UP);
 254               break;
 255             case CACA_KEY_DOWN:
 256               mplayer_put_key(KEY_DOWN);
 257               break;
 258             case CACA_KEY_LEFT:
 259               mplayer_put_key(KEY_LEFT);
 260               break;
 261             case CACA_KEY_RIGHT:
 262               mplayer_put_key(KEY_RIGHT);
 263               break;
 264             case CACA_KEY_ESCAPE:
 265               mplayer_put_key(KEY_ESC);
 266               break;
 267             case CACA_KEY_PAGEUP:
 268               mplayer_put_key(KEY_PAGE_UP);
 269               break;
 270             case CACA_KEY_PAGEDOWN:
 271               mplayer_put_key(KEY_PAGE_DOWN);
 272               break;
 273             case CACA_KEY_RETURN:
 274               mplayer_put_key(KEY_ENTER);
 275               break;
 276             case CACA_KEY_HOME:
 277               mplayer_put_key(KEY_HOME);
 278               break;
 279             case CACA_KEY_END:
 280               mplayer_put_key(KEY_END);
 281               break;
 282             default:
 283               if (key <= 255)
 284                   mplayer_put_key (key);
 285               break;
 286             }
 287         }
 288     }
 289 }
 290
 291 static void uninit(void)
 292 {
 293     caca_free_bitmap(cbitmap);
 294     cbitmap = NULL;
 295     caca_end();
 296 }
 297
 298
 299 static void draw_osd(void)
 300 {
 301     if (vo_osd_progbar_type != -1)
 302         osdpercent(MESSAGE_DURATION, 0, 255,
 303                   vo_osd_progbar_value, sub_osd_names[vo_osd_progbar_type],
 304                   "");
 305 }
 306
 307 static int preinit(const char *arg)
 308 {
 309     if (arg)
 310     {
 311         mp_msg(MSGT_VO, MSGL_ERR, "vo_caca: Unknown subdevice: %s\n", arg);
 312         return ENOSYS;
 313     }
 314
 315     if (caca_init())
 316     {
 317         mp_msg(MSGT_VO, MSGL_ERR, "vo_caca: failed to initialize\n");
 318         return ENOSYS;
 319     }
 320
 321     caca_set_window_title("MPlayer");
 322
 323     /* Default libcaca features */
 324     caca_set_feature(CACA_ANTIALIASING_PREFILTER);
 325     caca_set_feature(CACA_DITHERING_RANDOM);
 326
 327     return 0;
 328 }
 329
 330 static int query_format(uint32_t format)
 331 {
 332     if (format == IMGFMT_BGR24)
 333       return VFCAP_OSD | VFCAP_CSP_SUPPORTED;
 334
 335     return 0;
 336 }
 337
 338 static int control(uint32_t request, void *data)
 339 {
 340     switch(request)
 341     {
 342     case VOCTRL_QUERY_FORMAT:
 343       return query_format(*((uint32_t *)data));
 344     default:
 345       return VO_NOTIMPL;
 346     }
 347 }