libvo/vo_caca.c

   1 /*
   2  * MPlayer
   3  *
   4  * Video driver for libcaca
   5  *
   6  * by Pigeon <pigeon@pigeond.net>
   7  *
   8  * Some functions/codes/ideas are from x11 and aalib vo
   9  *
  10  * TODO: support those draw_alpha stuff?
  11  *
  12  */
  13
  14 #include <stdio.h>
  15 #include <stdlib.h>
  16 #include <sys/stat.h>
  17 #include <unistd.h>
  18 #include <string.h>
  19 #include <time.h>
  20 #include <errno.h>
  21
  22 #include "config.h"
  23 #include "video_out.h"
  24 #include "video_out_internal.h"
  25 #include "sub.h"
  26
  27 #include "osdep/keycodes.h"
  28 #include "mp_msg.h"
  29
  30 #include <caca.h>
  31
  32 static vo_info_t info = {
  33   "libcaca",
  34   "caca",
  35   "Pigeon <pigeon@pigeond.net>",
  36   ""
  37 };
  38
  39 LIBVO_EXTERN (caca)
  40
  41 /* caca stuff */
  42 static struct caca_bitmap *cbitmap = NULL;
  43
  44 /* image infos */
  45 static int image_format;
  46 static int image_width;
  47 static int image_height;
  48
  49 static int screen_w, screen_h;
  50
  51 /* We want 24bpp always for now */
  52 static unsigned int bpp = 24;
  53 static unsigned int depth = 3;
  54 static unsigned int rmask = 0xff0000;
  55 static unsigned int gmask = 0x00ff00;
  56 static unsigned int bmask = 0x0000ff;
  57 static unsigned int amask = 0;
  58
  59 #define MESSAGE_SIZE 512
  60 #define MESSAGE_DURATION 5
  61
  62 static time_t stoposd = 0;
  63 static int showosdmessage = 0;
  64 static char osdmessagetext[MESSAGE_SIZE];
  65 static char posbar[MESSAGE_SIZE];
  66
  67 static int osdx = 0, osdy = 0;
  68 static int posbary = 2;
  69
  70 static void osdmessage(int duration, char *fmt, ...)
  71 {
  72     /*
  73      * for outputting a centered string at the bottom
  74      * of our window for a while
  75      */
  76     va_list ar;
  77     char m[MESSAGE_SIZE];
  78
  79     va_start(ar, fmt);
  80     vsprintf(m, fmt, ar);
  81     va_end(ar);
  82     strcpy(osdmessagetext, m);
  83
  84     showosdmessage = 1;
  85     stoposd = time(NULL) + duration;
  86     osdx = (screen_w - strlen (osdmessagetext)) / 2;
  87     posbar[0] = '\0';
  88 }
  89
  90 static void osdpercent(int duration, int min, int max, int val, char *desc, char *unit)
  91 {
  92     /*
  93      * prints a bar for setting values
  94      */
  95     float step;
  96     int where, i;
  97
  98     step = (float)screen_w / (float)(max - min);
  99     where = (val - min) * step;
 100     osdmessage (duration, "%s: %i%s", desc, val, unit);
 101     posbar[0] = '|';
 102     posbar[screen_w - 1] = '|';
 103
 104     for (i = 0; i < screen_w; i++)
 105     {
 106         if (i == where)
 107             posbar[i] = '#';
 108         else
 109             posbar[i] = '-';
 110     }
 111
 112     if (where != 0)
 113         posbar[0] = '|';
 114
 115     if (where != (screen_w - 1))
 116         posbar[screen_w - 1] = '|';
 117
 118     posbar[screen_w] = '\0';
 119 }
 120
 121 static int resize ()
 122 {
 123     screen_w = caca_get_width();
 124     screen_h = caca_get_height();
 125
 126     if (cbitmap)
 127         caca_free_bitmap(cbitmap);
 128
 129     cbitmap = caca_create_bitmap(bpp, image_width, image_height,
 130                                 depth * image_width, rmask, gmask, bmask,
 131                                 amask);
 132
 133     if (!cbitmap)
 134         mp_msg(MSGT_VO, MSGL_FATAL, "vo_caca: caca_create_bitmap failed!\n");
 135
 136     return 0;
 137 }
 138
 139 static int config(uint32_t width, uint32_t height, uint32_t d_width,
 140         uint32_t d_height, uint32_t flags, char *title, uint32_t format)
 141 {
 142     image_height = height;
 143     image_width = width;
 144     image_format = format;
 145
 146     showosdmessage = 0;
 147     posbar[0] = '\0';
 148
 149     return resize ();
 150 }
 151
 152 static int draw_frame(uint8_t *src[])
 153 {
 154     caca_draw_bitmap(0, 0, screen_w, screen_h, cbitmap, src[0]);
 155     return 0;
 156 }
 157
 158 static int draw_slice(uint8_t *src[], int stride[], int w, int h, int x, int y)
 159 {
 160     return 0;
 161 }
 162
 163 static void flip_page(void)
 164 {
 165
 166     if (showosdmessage)
 167     {
 168         if (time(NULL) >= stoposd)
 169         {
 170             showosdmessage = 0;
 171             if (posbar)
 172                 posbar[0] = '\0';
 173         } else {
 174             caca_putstr(osdx, osdy, osdmessagetext);
 175
 176             if (posbar)
 177                 caca_putstr(0, posbary, posbar);
 178         }
 179     }
 180
 181     caca_refresh();
 182 }
 183
 184 static void check_events (void)
 185 {
 186     unsigned int cev;
 187
 188     if ((cev = caca_get_event(CACA_EVENT_ANY)))
 189     {
 190         if (cev & CACA_EVENT_RESIZE)
 191         {
 192             caca_refresh();
 193             resize();
 194         } else if (cev & CACA_EVENT_KEY_RELEASE)
 195         {
 196             int key = (cev & 0x00ffffff);
 197             enum caca_feature cf;
 198
 199             switch (key) {
 200             case 'd':
 201             case 'D':
 202               /* Toggle dithering method */
 203               cf = 1 + caca_get_feature(CACA_DITHERING);
 204               if (cf > CACA_DITHERING_MAX)
 205                   cf = CACA_DITHERING_MIN;
 206               caca_set_feature(cf);
 207               osdmessage(MESSAGE_DURATION, "Using %s", caca_get_feature_name(cf));
 208               break;
 209
 210             case 'a':
 211             case 'A':
 212               /* Toggle antialiasing method */
 213               cf = 1 + caca_get_feature(CACA_ANTIALIASING);
 214               if (cf > CACA_ANTIALIASING_MAX)
 215                   cf = CACA_ANTIALIASING_MIN;
 216               caca_set_feature(cf);
 217               osdmessage(MESSAGE_DURATION, "Using %s", caca_get_feature_name(cf));
 218               break;
 219
 220             case 'b':
 221             case 'B':
 222               /* Toggle background method */
 223               cf = 1 + caca_get_feature(CACA_BACKGROUND);
 224               if (cf > CACA_BACKGROUND_MAX)
 225                   cf = CACA_BACKGROUND_MIN;
 226               caca_set_feature(cf);
 227               osdmessage(MESSAGE_DURATION, "Using %s", caca_get_feature_name(cf));
 228               break;
 229
 230             case CACA_KEY_UP:
 231               mplayer_put_key(KEY_UP);
 232               break;
 233             case CACA_KEY_DOWN:
 234               mplayer_put_key(KEY_DOWN);
 235               break;
 236             case CACA_KEY_LEFT:
 237               mplayer_put_key(KEY_LEFT);
 238               break;
 239             case CACA_KEY_RIGHT:
 240               mplayer_put_key(KEY_RIGHT);
 241               break;
 242             case CACA_KEY_ESCAPE:
 243               mplayer_put_key(KEY_ESC);
 244               break;
 245             case CACA_KEY_PAGEUP:
 246               mplayer_put_key(KEY_PAGE_UP);
 247               break;
 248             case CACA_KEY_PAGEDOWN:
 249               mplayer_put_key(KEY_PAGE_DOWN);
 250               break;
 251             case CACA_KEY_RETURN:
 252               mplayer_put_key(KEY_ENTER);
 253               break;
 254             case CACA_KEY_HOME:
 255               mplayer_put_key(KEY_HOME);
 256               break;
 257             case CACA_KEY_END:
 258               mplayer_put_key(KEY_END);
 259               break;
 260             default:
 261               if (key <= 255)
 262                   mplayer_put_key (key);
 263               break;
 264             }
 265         }
 266     }
 267 }
 268
 269 static void uninit(void)
 270 {
 271     caca_free_bitmap(cbitmap);
 272     cbitmap = NULL;
 273     caca_end();
 274 }
 275
 276
 277 static void draw_osd(void)
 278 {
 279 #ifdef USE_OSD
 280     if (vo_osd_progbar_type != -1)
 281         osdpercent(MESSAGE_DURATION, 0, 255,
 282                   vo_osd_progbar_value, __sub_osd_names[vo_osd_progbar_type],
 283                   "");
 284 #endif
 285 }
 286
 287 static int preinit(const char *arg)
 288 {
 289     if (arg)
 290     {
 291         mp_msg(MSGT_VO, MSGL_ERR, "vo_caca: Unknown subdevice: %s\n", arg);
 292         return ENOSYS;
 293     }
 294
 295     if (caca_init())
 296     {
 297         mp_msg(MSGT_VO, MSGL_ERR, "vo_caca: failed to initialize\n");
 298         return ENOSYS;
 299     }
 300
 301     caca_set_window_title("MPlayer");
 302
 303     /* Default libcaca features */
 304     caca_set_feature(CACA_ANTIALIASING_PREFILTER);
 305     caca_set_feature(CACA_DITHERING_RANDOM);
 306
 307     return 0;
 308 }
 309
 310 static int query_format(uint32_t format)
 311 {
 312     if (format == IMGFMT_BGR24)
 313       return
 314 #ifdef USE_OSD
 315         VFCAP_OSD |
 316 #endif
 317         VFCAP_CSP_SUPPORTED;
 318
 319     return 0;
 320 }
 321
 322 static int control(uint32_t request, void *data, ...)
 323 {
 324     switch(request)
 325     {
 326     case VOCTRL_QUERY_FORMAT:
 327       return query_format(*((uint32_t *)data));
 328     default:
 329       return VO_NOTIMPL;
 330     }
 331 }