libvo/vo_fbdev.c

   1 /*
   2  * video driver for framebuffer device
   3  * copyright (C) 2001 Szabolcs Berecz <szabi@inf.elte.hu>
   4  *
   5  * Some idea and code borrowed from Chris Lawrence's ppmtofb-0.27
   6  * Some fixes and small improvements by Joey Parrish <joey@nicewarrior.org>
   7  *
   8  * This file is part of MPlayer.
   9  *
  10  * MPlayer is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * MPlayer is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <string.h>
  28 #include <fcntl.h>
  29 #include <unistd.h>
  30 #include <errno.h>
  31 #include <ctype.h>
  32
  33 #include <sys/mman.h>
  34 #include <sys/ioctl.h>
  35 #include <sys/kd.h>
  36 #include <linux/fb.h>
  37
  38 #include "config.h"
  39 #include "video_out.h"
  40 #include "video_out_internal.h"
  41 #include "fastmemcpy.h"
  42 #include "sub.h"
  43 #include "geometry.h"
  44 #ifdef CONFIG_VIDIX
  45 #include "vosub_vidix.h"
  46 #endif
  47 #include "aspect.h"
  48 #include "mp_msg.h"
  49 #include "libavutil/common.h"
  50
  51 static const vo_info_t info = {
  52     "Framebuffer Device",
  53     "fbdev",
  54     "Szabolcs Berecz <szabi@inf.elte.hu>",
  55     ""
  56 };
  57
  58 LIBVO_EXTERN(fbdev)
  59
  60 #ifdef CONFIG_VIDIX
  61 /* Name of VIDIX driver */
  62 static const char *vidix_name = NULL;
  63 static vidix_grkey_t gr_key;
  64 #endif
  65 static signed int pre_init_err = -2;
  66 /******************************
  67  *       fb.modes support     *
  68  ******************************/
  69
  70 static range_t *monitor_hfreq = NULL;
  71 static range_t *monitor_vfreq = NULL;
  72 static range_t *monitor_dotclock = NULL;
  73
  74 typedef struct {
  75     char *name;
  76     uint32_t xres, yres, vxres, vyres, depth;
  77     uint32_t pixclock, left, right, upper, lower, hslen, vslen;
  78     uint32_t sync;
  79     uint32_t vmode;
  80 } fb_mode_t;
  81
  82 #define MAX_NR_TOKEN    16
  83
  84 #define MAX_LINE_LEN    1000
  85
  86 #define RET_EOF        -1
  87 #define RET_EOL        -2
  88
  89 static int validate_mode(fb_mode_t *m)
  90 {
  91     if (!m->xres) {
  92         mp_msg(MSGT_VO, MSGL_V, "needs geometry ");
  93         return 0;
  94     }
  95     if (!m->pixclock) {
  96         mp_msg(MSGT_VO, MSGL_V, "needs timings ");
  97         return 0;
  98     }
  99     return 1;
 100 }
 101
 102 static FILE *fp;
 103 static int line_num = 0;
 104 static char *line;
 105 static char *token[MAX_NR_TOKEN];
 106
 107 static int get_token(int num)
 108 {
 109     static int read_nextline = 1;
 110     static int line_pos;
 111     int i;
 112     char c;
 113
 114     if (num >= MAX_NR_TOKEN) {
 115         mp_msg(MSGT_VO, MSGL_V, "get_token(): max >= MAX_NR_TOKEN!\n");
 116         goto out_eof;
 117     }
 118
 119     if (read_nextline) {
 120         if (!fgets(line, MAX_LINE_LEN, fp))
 121             goto out_eof;
 122         line_pos = 0;
 123         ++line_num;
 124         read_nextline = 0;
 125     }
 126     for (i = 0; i < num; i++) {
 127         while (isspace(line[line_pos]))
 128             ++line_pos;
 129         if (line[line_pos] == '\0' || line[line_pos] == '#') {
 130             read_nextline = 1;
 131             goto out_eol;
 132         }
 133         token[i] = line + line_pos;
 134         c = line[line_pos];
 135         if (c == '"' || c == '\'') {
 136             token[i]++;
 137             while (line[++line_pos] != c && line[line_pos])
 138                 /* NOTHING */;
 139             if (!line[line_pos])
 140                 goto out_eol;
 141             line[line_pos] = ' ';
 142         } else {
 143             for (/* NOTHING */; !isspace(line[line_pos]) &&
 144                                 line[line_pos]; line_pos++)
 145                 /* NOTHING */;
 146         }
 147         if (!line[line_pos]) {
 148             read_nextline = 1;
 149             if (i == num - 1)
 150                 goto out_ok;
 151             goto out_eol;
 152         }
 153         line[line_pos++] = '\0';
 154     }
 155 out_ok:
 156     return i;
 157 out_eof:
 158     return RET_EOF;
 159 out_eol:
 160     return RET_EOL;
 161 }
 162
 163 static fb_mode_t *fb_modes = NULL;
 164 static int nr_modes = 0;
 165
 166 static int parse_fbmode_cfg(char *cfgfile)
 167 {
 168 #define CHECK_IN_MODE_DEF\
 169     if (!in_mode_def) {\
 170         mp_msg(MSGT_VO, MSGL_V, "'needs 'mode' first");\
 171         goto err_out_print_linenum;\
 172     }
 173     fb_mode_t *mode = NULL;
 174     char *endptr;    // strtoul()...
 175     int in_mode_def = 0;
 176     int tmp, i;
 177
 178     /* If called more than once, reuse parsed data */
 179     if (nr_modes)
 180         return nr_modes;
 181
 182     mp_msg(MSGT_VO, MSGL_V, "Reading %s: ", cfgfile);
 183
 184     if ((fp = fopen(cfgfile, "r")) == NULL) {
 185         mp_msg(MSGT_VO, MSGL_V, "can't open '%s': %s\n", cfgfile, strerror(errno));
 186         return -1;
 187     }
 188
 189     if ((line = malloc(MAX_LINE_LEN + 1)) == NULL) {
 190         mp_msg(MSGT_VO, MSGL_V, "can't get memory for 'line': %s\n", strerror(errno));
 191         return -2;
 192     }
 193
 194     /*
 195      * check if the cfgfile starts with 'mode'
 196      */
 197     while ((tmp = get_token(1)) == RET_EOL)
 198         /* NOTHING */;
 199     if (tmp == RET_EOF)
 200         goto out;
 201     if (!strcmp(token[0], "mode"))
 202         goto loop_enter;
 203     goto err_out_parse_error;
 204
 205     while ((tmp = get_token(1)) != RET_EOF) {
 206         if (tmp == RET_EOL)
 207             continue;
 208         if (!strcmp(token[0], "mode")) {
 209             if (in_mode_def) {
 210                 mp_msg(MSGT_VO, MSGL_V, "'endmode' required");
 211                 goto err_out_print_linenum;
 212             }
 213             if (!validate_mode(mode))
 214                 goto err_out_not_valid;
 215         loop_enter:
 216             if (!(fb_modes =
 217                   realloc(fb_modes, sizeof(fb_mode_t) * (nr_modes + 1)))) {
 218                 mp_msg(MSGT_VO, MSGL_V, "can't realloc 'fb_modes' (nr_modes = %d):"
 219                        " %s\n", nr_modes, strerror(errno));
 220                 goto err_out;
 221             }
 222             mode = fb_modes + nr_modes;
 223             ++nr_modes;
 224             memset(mode, 0, sizeof(fb_mode_t));
 225
 226             if (get_token(1) < 0)
 227                 goto err_out_parse_error;
 228             for (i = 0; i < nr_modes - 1; i++) {
 229                 if (!strcmp(token[0], fb_modes[i].name)) {
 230                     mp_msg(MSGT_VO, MSGL_V, "mode name '%s' isn't unique", token[0]);
 231                     goto err_out_print_linenum;
 232                 }
 233             }
 234             if (!(mode->name = strdup(token[0]))) {
 235                 mp_msg(MSGT_VO, MSGL_V, "can't strdup -> 'name': %s\n", strerror(errno));
 236                 goto err_out;
 237             }
 238             in_mode_def = 1;
 239         } else if (!strcmp(token[0], "geometry")) {
 240             CHECK_IN_MODE_DEF;
 241             if (get_token(5) < 0)
 242                 goto err_out_parse_error;
 243             mode->xres = strtoul(token[0], &endptr, 0);
 244             if (*endptr)
 245                 goto err_out_parse_error;
 246             mode->yres = strtoul(token[1], &endptr, 0);
 247             if (*endptr)
 248                 goto err_out_parse_error;
 249             mode->vxres = strtoul(token[2], &endptr, 0);
 250             if (*endptr)
 251                 goto err_out_parse_error;
 252             mode->vyres = strtoul(token[3], &endptr, 0);
 253             if (*endptr)
 254                 goto err_out_parse_error;
 255             mode->depth = strtoul(token[4], &endptr, 0);
 256             if (*endptr)
 257                 goto err_out_parse_error;
 258         } else if (!strcmp(token[0], "timings")) {
 259             CHECK_IN_MODE_DEF;
 260             if (get_token(7) < 0)
 261                 goto err_out_parse_error;
 262             mode->pixclock = strtoul(token[0], &endptr, 0);
 263             if (*endptr)
 264                 goto err_out_parse_error;
 265             mode->left = strtoul(token[1], &endptr, 0);
 266             if (*endptr)
 267                 goto err_out_parse_error;
 268             mode->right = strtoul(token[2], &endptr, 0);
 269             if (*endptr)
 270                 goto err_out_parse_error;
 271             mode->upper = strtoul(token[3], &endptr, 0);
 272             if (*endptr)
 273                 goto err_out_parse_error;
 274             mode->lower = strtoul(token[4], &endptr, 0);
 275             if (*endptr)
 276                 goto err_out_parse_error;
 277             mode->hslen = strtoul(token[5], &endptr, 0);
 278             if (*endptr)
 279                 goto err_out_parse_error;
 280             mode->vslen = strtoul(token[6], &endptr, 0);
 281             if (*endptr)
 282                 goto err_out_parse_error;
 283         } else if (!strcmp(token[0], "endmode")) {
 284             CHECK_IN_MODE_DEF;
 285             in_mode_def = 0;
 286         } else if (!strcmp(token[0], "accel")) {
 287             CHECK_IN_MODE_DEF;
 288             if (get_token(1) < 0)
 289                 goto err_out_parse_error;
 290             /*
 291              * it's only used for text acceleration
 292              * so we just ignore it.
 293              */
 294         } else if (!strcmp(token[0], "hsync")) {
 295             CHECK_IN_MODE_DEF;
 296             if (get_token(1) < 0)
 297                 goto err_out_parse_error;
 298             if (!strcmp(token[0], "low"))
 299                 mode->sync &= ~FB_SYNC_HOR_HIGH_ACT;
 300             else if (!strcmp(token[0], "high"))
 301                 mode->sync |= FB_SYNC_HOR_HIGH_ACT;
 302             else
 303                 goto err_out_parse_error;
 304         } else if (!strcmp(token[0], "vsync")) {
 305             CHECK_IN_MODE_DEF;
 306             if (get_token(1) < 0)
 307                 goto err_out_parse_error;
 308             if (!strcmp(token[0], "low"))
 309                 mode->sync &= ~FB_SYNC_VERT_HIGH_ACT;
 310             else if (!strcmp(token[0], "high"))
 311                 mode->sync |= FB_SYNC_VERT_HIGH_ACT;
 312             else
 313                 goto err_out_parse_error;
 314         } else if (!strcmp(token[0], "csync")) {
 315             CHECK_IN_MODE_DEF;
 316             if (get_token(1) < 0)
 317                 goto err_out_parse_error;
 318             if (!strcmp(token[0], "low"))
 319                 mode->sync &= ~FB_SYNC_COMP_HIGH_ACT;
 320             else if (!strcmp(token[0], "high"))
 321                 mode->sync |= FB_SYNC_COMP_HIGH_ACT;
 322             else
 323                 goto err_out_parse_error;
 324         } else if (!strcmp(token[0], "extsync")) {
 325             CHECK_IN_MODE_DEF;
 326             if (get_token(1) < 0)
 327                 goto err_out_parse_error;
 328             if (!strcmp(token[0], "false"))
 329                 mode->sync &= ~FB_SYNC_EXT;
 330             else if (!strcmp(token[0], "true"))
 331                 mode->sync |= FB_SYNC_EXT;
 332             else
 333                 goto err_out_parse_error;
 334         } else if (!strcmp(token[0], "laced")) {
 335             CHECK_IN_MODE_DEF;
 336             if (get_token(1) < 0)
 337                 goto err_out_parse_error;
 338             if (!strcmp(token[0], "false"))
 339                 mode->vmode = FB_VMODE_NONINTERLACED;
 340             else if (!strcmp(token[0], "true"))
 341                 mode->vmode = FB_VMODE_INTERLACED;
 342             else
 343                 goto err_out_parse_error;
 344         } else if (!strcmp(token[0], "double")) {
 345             CHECK_IN_MODE_DEF;
 346             if (get_token(1) < 0)
 347                 goto err_out_parse_error;
 348             if (!strcmp(token[0], "false"))
 349                 ;
 350             else if (!strcmp(token[0], "true"))
 351                 mode->vmode = FB_VMODE_DOUBLE;
 352             else
 353                 goto err_out_parse_error;
 354         } else
 355             goto err_out_parse_error;
 356     }
 357     if (!validate_mode(mode))
 358         goto err_out_not_valid;
 359 out:
 360     mp_msg(MSGT_VO, MSGL_V, "%d modes\n", nr_modes);
 361     free(line);
 362     fclose(fp);
 363     return nr_modes;
 364 err_out_parse_error:
 365     mp_msg(MSGT_VO, MSGL_V, "parse error");
 366 err_out_print_linenum:
 367     mp_msg(MSGT_VO, MSGL_V, " at line %d\n", line_num);
 368 err_out:
 369     if (fb_modes) {
 370         free(fb_modes);
 371         fb_modes = NULL;
 372     }
 373     nr_modes = 0;
 374     free(line);
 375     free(fp);
 376     return -2;
 377 err_out_not_valid:
 378     mp_msg(MSGT_VO, MSGL_V, "previous mode is not correct");
 379     goto err_out_print_linenum;
 380 }
 381
 382 static fb_mode_t *find_mode_by_name(char *name)
 383 {
 384     int i;
 385
 386     for (i = 0; i < nr_modes; i++)
 387         if (!strcmp(name, fb_modes[i].name))
 388             return fb_modes + i;
 389     return NULL;
 390 }
 391
 392 static float dcf(fb_mode_t *m)    //driving clock frequency
 393 {
 394     return 1e12f / m->pixclock;
 395 }
 396
 397 static float hsf(fb_mode_t *m)    //horizontal scan frequency
 398 {
 399     int htotal = m->left + m->xres + m->right + m->hslen;
 400     return dcf(m) / htotal;
 401 }
 402
 403 static float vsf(fb_mode_t *m)    //vertical scan frequency
 404 {
 405     int vtotal = m->upper + m->yres + m->lower + m->vslen;
 406     return hsf(m) / vtotal;
 407 }
 408
 409
 410 static int mode_works(fb_mode_t *m, range_t *hfreq, range_t *vfreq,
 411                       range_t *dotclock)
 412 {
 413     float h = hsf(m);
 414     float v = vsf(m);
 415     float d = dcf(m);
 416     int ret = 1;
 417
 418     mp_msg(MSGT_VO, MSGL_DBG2, "mode %dx%d:", m->xres, m->yres);
 419     if (!in_range(hfreq, h)) {
 420         ret = 0;
 421         mp_msg(MSGT_VO, MSGL_DBG2, " hsync out of range.");
 422     }
 423     if (!in_range(vfreq, v)) {
 424         ret = 0;
 425         mp_msg(MSGT_VO, MSGL_DBG2, " vsync out of range.");
 426     }
 427     if (!in_range(dotclock, d)) {
 428         ret = 0;
 429         mp_msg(MSGT_VO, MSGL_DBG2, " dotclock out of range.");
 430     }
 431     if (ret)
 432         mp_msg(MSGT_VO, MSGL_DBG2, " hsync, vsync, dotclock ok.\n");
 433     else
 434         mp_msg(MSGT_VO, MSGL_DBG2, "\n");
 435
 436     return ret;
 437 }
 438
 439 static fb_mode_t *find_best_mode(int xres, int yres, range_t *hfreq,
 440                                  range_t *vfreq, range_t *dotclock)
 441 {
 442     int i;
 443     fb_mode_t *best = fb_modes;
 444     fb_mode_t *curr;
 445
 446     mp_msg(MSGT_VO, MSGL_DBG2, "Searching for first working mode\n");
 447
 448     for (i = 0; i < nr_modes; i++, best++)
 449         if (mode_works(best, hfreq, vfreq, dotclock))
 450             break;
 451
 452     if (i == nr_modes)
 453         return NULL;
 454     if (i == nr_modes - 1)
 455         return best;
 456
 457     mp_msg(MSGT_VO, MSGL_DBG2, "First working mode: %dx%d\n", best->xres, best->yres);
 458     mp_msg(MSGT_VO, MSGL_DBG2, "Searching for better modes\n");
 459
 460     for (curr = best + 1; i < nr_modes - 1; i++, curr++) {
 461         if (!mode_works(curr, hfreq, vfreq, dotclock))
 462             continue;
 463
 464         if (best->xres < xres || best->yres < yres) {
 465             if (curr->xres > best->xres || curr->yres > best->yres) {
 466                 mp_msg(MSGT_VO, MSGL_DBG2, "better than %dx%d, which is too small.\n",
 467                        best->xres, best->yres);
 468                 best = curr;
 469             } else
 470                 mp_msg(MSGT_VO, MSGL_DBG2, "too small.\n");
 471         } else if (curr->xres == best->xres && curr->yres == best->yres &&
 472                    vsf(curr) > vsf(best)) {
 473             mp_msg(MSGT_VO, MSGL_DBG2, "faster screen refresh.\n");
 474             best = curr;
 475         } else if ((curr->xres <= best->xres && curr->yres <= best->yres) &&
 476                 (curr->xres >= xres && curr->yres >= yres)) {
 477             mp_msg(MSGT_VO, MSGL_DBG2, "better than %dx%d, which is too large.\n",
 478                    best->xres, best->yres);
 479             best = curr;
 480         } else {
 481             if (curr->xres < xres || curr->yres < yres)
 482                 mp_msg(MSGT_VO, MSGL_DBG2, "too small.\n");
 483             else if (curr->xres > best->xres || curr->yres > best->yres)
 484                 mp_msg(MSGT_VO, MSGL_DBG2, "too large.\n");
 485             else
 486                 mp_msg(MSGT_VO, MSGL_DBG2, "it's worse, don't know why.\n");
 487         }
 488     }
 489
 490     return best;
 491 }
 492
 493 static void set_bpp(struct fb_var_screeninfo *p, int bpp)
 494 {
 495     p->bits_per_pixel = FFALIGN(bpp, 2);
 496     p->red.msb_right  = p->green.msb_right = p->blue.msb_right = p->transp.msb_right = 0;
 497     p->transp.offset  = p->transp.length = 0;
 498     p->blue.offset    = 0;
 499     switch (bpp) {
 500     case 32:
 501         p->transp.offset = 24;
 502         p->transp.length = 8;
 503     case 24:
 504         p->red.offset   = 16;
 505         p->red.length   = 8;
 506         p->green.offset = 8;
 507         p->green.length = 8;
 508         p->blue.length  = 8;
 509         break;
 510     case 16:
 511         p->red.offset   = 11;
 512         p->green.length = 6;
 513         p->red.length   = 5;
 514         p->green.offset = 5;
 515         p->blue.length  = 5;
 516         break;
 517     case 15:
 518         p->red.offset   = 10;
 519         p->green.length = 5;
 520         p->red.length   = 5;
 521         p->green.offset = 5;
 522         p->blue.length  = 5;
 523         break;
 524     }
 525 }
 526
 527 static void fb_mode2fb_vinfo(fb_mode_t *m, struct fb_var_screeninfo *v)
 528 {
 529     v->xres         = m->xres;
 530     v->yres         = m->yres;
 531     v->xres_virtual = m->vxres;
 532     v->yres_virtual = m->vyres;
 533     set_bpp(v, m->depth);
 534     v->pixclock     = m->pixclock;
 535     v->left_margin  = m->left;
 536     v->right_margin = m->right;
 537     v->upper_margin = m->upper;
 538     v->lower_margin = m->lower;
 539     v->hsync_len    = m->hslen;
 540     v->vsync_len    = m->vslen;
 541     v->sync         = m->sync;
 542     v->vmode        = m->vmode;
 543 }
 544
 545
 546 /******************************
 547 *        vo_fbdev          *
 548 ******************************/
 549
 550 /* command line/config file options */
 551 static char *fb_dev_name = NULL;
 552 char *fb_mode_cfgfile = NULL;
 553 char *fb_mode_name = NULL;
 554
 555 static fb_mode_t *fb_mode = NULL;
 556
 557 /* vt related variables */
 558 static FILE *vt_fp = NULL;
 559
 560 /* vo_fbdev related variables */
 561 static int fb_dev_fd;
 562 static int fb_tty_fd = -1;
 563 static size_t fb_size;
 564 static uint8_t *frame_buffer;
 565 static uint8_t *center;
 566 static struct fb_fix_screeninfo fb_finfo;
 567 static struct fb_var_screeninfo fb_orig_vinfo;
 568 static struct fb_var_screeninfo fb_vinfo;
 569 static unsigned short fb_ored[256], fb_ogreen[256], fb_oblue[256];
 570 static struct fb_cmap fb_oldcmap = { 0, 256, fb_ored, fb_ogreen, fb_oblue };
 571 static int fb_cmap_changed = 0;
 572 static int fb_pixel_size;       // 32:  4  24:  3  16:  2  15:  2
 573 static int fb_bpp;              // 32: 32  24: 24  16: 16  15: 15
 574 static int fb_bpp_we_want;      // 32: 32  24: 24  16: 16  15: 15
 575 static int fb_line_len;
 576 static int fb_xres;
 577 static int fb_yres;
 578 static void (*draw_alpha_p)(int w, int h, unsigned char *src,
 579                             unsigned char *srca, int stride,
 580                             unsigned char *dst, int dstride);
 581
 582 static int in_width;
 583 static int in_height;
 584 static int out_width;
 585 static int out_height;
 586 static int first_row;
 587 static int last_row;
 588 static uint32_t pixel_format;
 589 static int fs;
 590
 591 /*
 592  * Note: this function is completely cut'n'pasted from
 593  * Chris Lawrence's code.
 594  * (modified a bit to fit in my code...)
 595  */
 596 static struct fb_cmap *make_directcolor_cmap(struct fb_var_screeninfo *var)
 597 {
 598     /* Hopefully any DIRECTCOLOR device will have a big enough palette
 599      * to handle mapping the full color depth.
 600      * e.g. 8 bpp -> 256 entry palette
 601      *
 602      * We could handle some sort of gamma here
 603      */
 604     int i, cols, rcols, gcols, bcols;
 605     uint16_t *red, *green, *blue;
 606     struct fb_cmap *cmap;
 607
 608     rcols = 1 << var->red.length;
 609     gcols = 1 << var->green.length;
 610     bcols = 1 << var->blue.length;
 611
 612     /* Make our palette the length of the deepest color */
 613     cols = FFMAX3(rcols, gcols, bcols);
 614
 615     red = malloc(cols * sizeof(red[0]));
 616     if (!red) {
 617         mp_msg(MSGT_VO, MSGL_V, "Can't allocate red palette with %d entries.\n", cols);
 618         return NULL;
 619     }
 620     for (i = 0; i < rcols; i++)
 621         red[i] = (65535 / (rcols - 1)) * i;
 622
 623     green = malloc(cols * sizeof(green[0]));
 624     if (!green) {
 625         mp_msg(MSGT_VO, MSGL_V, "Can't allocate green palette with %d entries.\n", cols);
 626         free(red);
 627         return NULL;
 628     }
 629     for (i = 0; i < gcols; i++)
 630         green[i] = (65535 / (gcols - 1)) * i;
 631
 632     blue = malloc(cols * sizeof(blue[0]));
 633     if (!blue) {
 634         mp_msg(MSGT_VO, MSGL_V, "Can't allocate blue palette with %d entries.\n", cols);
 635         free(red);
 636         free(green);
 637         return NULL;
 638     }
 639     for (i = 0; i < bcols; i++)
 640         blue[i] = (65535 / (bcols - 1)) * i;
 641
 642     cmap = malloc(sizeof(struct fb_cmap));
 643     if (!cmap) {
 644         mp_msg(MSGT_VO, MSGL_V, "Can't allocate color map\n");
 645         free(red);
 646         free(green);
 647         free(blue);
 648         return NULL;
 649     }
 650     cmap->start  = 0;
 651     cmap->transp = 0;
 652     cmap->len    = cols;
 653     cmap->red    = red;
 654     cmap->blue   = blue;
 655     cmap->green  = green;
 656     cmap->transp = NULL;
 657
 658     return cmap;
 659 }
 660
 661
 662 static int fb_preinit(int reset)
 663 {
 664     static int fb_preinit_done = 0;
 665     static int fb_works = 0;
 666
 667     if (reset) {
 668         fb_preinit_done = 0;
 669         return 0;
 670     }
 671
 672     if (fb_preinit_done)
 673         return fb_works;
 674
 675     fb_dev_fd = fb_tty_fd = -1;
 676
 677     if (!fb_dev_name && !(fb_dev_name = getenv("FRAMEBUFFER")))
 678         fb_dev_name = strdup("/dev/fb0");
 679     mp_msg(MSGT_VO, MSGL_V, "using %s\n", fb_dev_name);
 680
 681     if ((fb_dev_fd = open(fb_dev_name, O_RDWR)) == -1) {
 682         mp_msg(MSGT_VO, MSGL_ERR, "Can't open %s: %s\n", fb_dev_name, strerror(errno));
 683         goto err_out;
 684     }
 685     if (ioctl(fb_dev_fd, FBIOGET_VSCREENINFO, &fb_vinfo)) {
 686         mp_msg(MSGT_VO, MSGL_ERR, "Can't get VSCREENINFO: %s\n", strerror(errno));
 687         goto err_out;
 688     }
 689     fb_orig_vinfo = fb_vinfo;
 690
 691     if ((fb_tty_fd = open("/dev/tty", O_RDWR)) < 0) {
 692         mp_msg(MSGT_VO, MSGL_ERR, "notice: Can't open /dev/tty: %s\n", strerror(errno));
 693     }
 694
 695     fb_bpp = fb_vinfo.red.length  + fb_vinfo.green.length +
 696              fb_vinfo.blue.length + fb_vinfo.transp.length;
 697
 698     if (fb_bpp == 8 && !vo_dbpp) {
 699         mp_msg(MSGT_VO, MSGL_ERR, "8 bpp output is not supported.\n");
 700         goto err_out;
 701     }
 702
 703     if (vo_dbpp) {
 704         if (vo_dbpp != 15 && vo_dbpp != 16 && vo_dbpp != 24 && vo_dbpp != 32) {
 705             mp_msg(MSGT_VO, MSGL_ERR, "can't switch to %d bpp\n", vo_dbpp);
 706             goto err_out;
 707         }
 708         fb_bpp = vo_dbpp;
 709     }
 710
 711     if (!fb_mode_cfgfile)
 712         fb_mode_cfgfile = strdup("/etc/fb.modes");
 713
 714     fb_preinit_done = 1;
 715     fb_works = 1;
 716     return 1;
 717 err_out:
 718     if (fb_tty_fd != -1)
 719     close(fb_tty_fd);
 720     fb_tty_fd = -1;
 721     if (fb_dev_fd != -1)
 722     close(fb_dev_fd);
 723     fb_dev_fd = -1;
 724     fb_preinit_done = 1;
 725     fb_works = 0;
 726     return 0;
 727 }
 728
 729 static void vt_set_textarea(int u, int l)
 730 {
 731     /* how can I determine the font height?
 732      * just use 16 for now
 733      */
 734     int urow = ((u + 15) / 16) + 1;
 735     int lrow = l / 16;
 736
 737     mp_msg(MSGT_VO, MSGL_DBG2, "vt_set_textarea(%d,%d): %d,%d\n", u, l, urow, lrow);
 738     if (vt_fp) {
 739         fprintf(vt_fp, "\33[%d;%dr\33[%d;%dH", urow, lrow, lrow, 0);
 740         fflush(vt_fp);
 741     }
 742 }
 743
 744 static int config(uint32_t width, uint32_t height, uint32_t d_width,
 745                   uint32_t d_height, uint32_t flags, char *title,
 746                   uint32_t format)
 747 {
 748     struct fb_cmap *cmap;
 749     int vm   = flags & VOFLAG_MODESWITCHING;
 750     int zoom = flags & VOFLAG_SWSCALE;
 751
 752     fs = flags & VOFLAG_FULLSCREEN;
 753
 754     if (pre_init_err == -2) {
 755         mp_msg(MSGT_VO, MSGL_ERR, "Internal fatal error: config() was called before preinit()\n");
 756         return -1;
 757     }
 758
 759     if (pre_init_err)
 760         return 1;
 761
 762     if (fb_mode_name && !vm) {
 763         mp_msg(MSGT_VO, MSGL_ERR, "-fbmode can only be used with -vm\n");
 764         return 1;
 765     }
 766     if (vm && parse_fbmode_cfg(fb_mode_cfgfile) < 0)
 767         return 1;
 768     if (d_width && (fs || vm)) {
 769         out_width  = d_width;
 770         out_height = d_height;
 771     } else {
 772         out_width  = width;
 773         out_height = height;
 774     }
 775     in_width     = width;
 776     in_height    = height;
 777     pixel_format = format;
 778
 779     if (fb_mode_name) {
 780         if (!(fb_mode = find_mode_by_name(fb_mode_name))) {
 781             mp_msg(MSGT_VO, MSGL_ERR, "can't find requested video mode\n");
 782             return 1;
 783         }
 784         fb_mode2fb_vinfo(fb_mode, &fb_vinfo);
 785     } else if (vm) {
 786         monitor_hfreq = str2range(monitor_hfreq_str);
 787         monitor_vfreq = str2range(monitor_vfreq_str);
 788         monitor_dotclock = str2range(monitor_dotclock_str);
 789         if (!monitor_hfreq || !monitor_vfreq || !monitor_dotclock) {
 790             mp_msg(MSGT_VO, MSGL_ERR, "you have to specify the capabilities of"
 791                    " the monitor.\n");
 792             return 1;
 793         }
 794         if (!(fb_mode = find_best_mode(out_width, out_height, monitor_hfreq,
 795                                        monitor_vfreq, monitor_dotclock))) {
 796             mp_msg(MSGT_VO, MSGL_ERR, "can't find best video mode\n");
 797             return 1;
 798         }
 799         mp_msg(MSGT_VO, MSGL_V, "using mode %dx%d @ %.1fHz\n", fb_mode->xres,
 800                fb_mode->yres, vsf(fb_mode));
 801         fb_mode2fb_vinfo(fb_mode, &fb_vinfo);
 802     }
 803     fb_bpp_we_want = fb_bpp;
 804     set_bpp(&fb_vinfo, fb_bpp);
 805     fb_vinfo.xres_virtual = fb_vinfo.xres;
 806     fb_vinfo.yres_virtual = fb_vinfo.yres;
 807
 808     if (fb_tty_fd >= 0 && ioctl(fb_tty_fd, KDSETMODE, KD_GRAPHICS) < 0) {
 809         mp_msg(MSGT_VO, MSGL_V, "Can't set graphics mode: %s\n", strerror(errno));
 810         close(fb_tty_fd);
 811         fb_tty_fd = -1;
 812     }
 813
 814     if (ioctl(fb_dev_fd, FBIOPUT_VSCREENINFO, &fb_vinfo)) {
 815         mp_msg(MSGT_VO, MSGL_ERR, "Can't put VSCREENINFO: %s\n", strerror(errno));
 816         if (fb_tty_fd >= 0 && ioctl(fb_tty_fd, KDSETMODE, KD_TEXT) < 0) {
 817             mp_msg(MSGT_VO, MSGL_ERR, "Can't restore text mode: %s\n", strerror(errno));
 818         }
 819         return 1;
 820     }
 821
 822     fb_pixel_size = fb_vinfo.bits_per_pixel / 8;
 823     fb_bpp = fb_vinfo.red.length + fb_vinfo.green.length +
 824         fb_vinfo.blue.length + fb_vinfo.transp.length;
 825     if (fb_bpp_we_want != fb_bpp)
 826         mp_msg(MSGT_VO, MSGL_WARN, "requested %d bpp, got %d bpp!!!\n",
 827                fb_bpp_we_want, fb_bpp);
 828
 829     switch (fb_bpp) {
 830     case 32:
 831         draw_alpha_p = vo_draw_alpha_rgb32;
 832         break;
 833     case 24:
 834         draw_alpha_p = vo_draw_alpha_rgb24;
 835         break;
 836     case 16:
 837         draw_alpha_p = vo_draw_alpha_rgb16;
 838         break;
 839     case 15:
 840         draw_alpha_p = vo_draw_alpha_rgb15;
 841         break;
 842     default:
 843         return 1;
 844     }
 845
 846     fb_xres = fb_vinfo.xres;
 847     fb_yres = fb_vinfo.yres;
 848
 849     if (vm || fs) {
 850         out_width  = fb_xres;
 851         out_height = fb_yres;
 852     }
 853     if (out_width < in_width || out_height < in_height) {
 854         mp_msg(MSGT_VO, MSGL_ERR, "screensize is smaller than video size\n");
 855         return 1;
 856     }
 857
 858     first_row = (out_height - in_height) / 2;
 859     last_row  = (out_height + in_height) / 2;
 860
 861     if (ioctl(fb_dev_fd, FBIOGET_FSCREENINFO, &fb_finfo)) {
 862         mp_msg(MSGT_VO, MSGL_ERR, "Can't get FSCREENINFO: %s\n", strerror(errno));
 863         return 1;
 864     }
 865
 866     if (fb_finfo.type != FB_TYPE_PACKED_PIXELS) {
 867         mp_msg(MSGT_VO, MSGL_ERR, "type %d not supported\n", fb_finfo.type);
 868         return 1;
 869     }
 870
 871     switch (fb_finfo.visual) {
 872     case FB_VISUAL_TRUECOLOR:
 873         break;
 874     case FB_VISUAL_DIRECTCOLOR:
 875         mp_msg(MSGT_VO, MSGL_V, "creating cmap for directcolor\n");
 876         if (ioctl(fb_dev_fd, FBIOGETCMAP, &fb_oldcmap)) {
 877             mp_msg(MSGT_VO, MSGL_ERR, "can't get cmap: %s\n",
 878                     strerror(errno));
 879             return 1;
 880         }
 881         if (!(cmap = make_directcolor_cmap(&fb_vinfo)))
 882             return 1;
 883         if (ioctl(fb_dev_fd, FBIOPUTCMAP, cmap)) {
 884             mp_msg(MSGT_VO, MSGL_ERR, "can't put cmap: %s\n",
 885                    strerror(errno));
 886             return 1;
 887         }
 888         fb_cmap_changed = 1;
 889         free(cmap->red);
 890         free(cmap->green);
 891         free(cmap->blue);
 892         free(cmap);
 893         break;
 894     default:
 895         mp_msg(MSGT_VO, MSGL_ERR, "visual: %d not yet supported\n",
 896                fb_finfo.visual);
 897         return 1;
 898     }
 899
 900     fb_line_len = fb_finfo.line_length;
 901     fb_size     = fb_finfo.smem_len;
 902
 903 #ifdef CONFIG_VIDIX
 904     if (vidix_name) {
 905         unsigned image_width, image_height, x_offset, y_offset;
 906         if (zoom || fs) {
 907             aspect_save_orig(width, height);
 908             aspect_save_prescale(d_width, d_height);
 909             aspect_save_screenres(fb_xres, fb_yres);
 910             aspect(&image_width, &image_height, fs ? A_ZOOM : A_NOZOOM);
 911         } else {
 912             image_width  = width;
 913             image_height = height;
 914         }
 915
 916         if (fb_xres > image_width)
 917             x_offset = (fb_xres - image_width) / 2;
 918         else
 919             x_offset = 0;
 920         if (fb_yres > image_height)
 921             y_offset = (fb_yres - image_height) / 2;
 922         else
 923             y_offset = 0;
 924
 925         if (vidix_init(width, height, x_offset, y_offset, image_width,
 926                        image_height, format, fb_bpp, fb_xres, fb_yres) != 0) {
 927             mp_msg(MSGT_VO, MSGL_ERR, "Can't initialize VIDIX driver\n");
 928             vidix_name = NULL;
 929             vidix_term();
 930             return -1;
 931         } else
 932             mp_msg(MSGT_VO, MSGL_V, "Using VIDIX\n");
 933         vidix_start();
 934         if (vidix_grkey_support()) {
 935             vidix_grkey_get(&gr_key);
 936             gr_key.key_op = KEYS_PUT;
 937             if (!(vo_colorkey & 0xff000000)) {
 938                 gr_key.ckey.op    = CKEY_TRUE;
 939                 gr_key.ckey.red   = (vo_colorkey & 0x00ff0000) >> 16;
 940                 gr_key.ckey.green = (vo_colorkey & 0x0000ff00) >> 8;
 941                 gr_key.ckey.blue  =  vo_colorkey & 0x000000ff;
 942             } else
 943                 gr_key.ckey.op = CKEY_FALSE;
 944             vidix_grkey_set(&gr_key);
 945         }
 946     } else
 947 #endif
 948     {
 949         int x_offset = 0, y_offset = 0;
 950         geometry(&x_offset, &y_offset, &out_width, &out_height, fb_xres, fb_yres);
 951
 952         frame_buffer = mmap(0, fb_size, PROT_READ | PROT_WRITE,
 953                             MAP_SHARED, fb_dev_fd, 0);
 954         if (frame_buffer == (uint8_t *) -1) {
 955             mp_msg(MSGT_VO, MSGL_ERR, "Can't mmap %s: %s\n", fb_dev_name, strerror(errno));
 956             return 1;
 957         }
 958
 959         center = frame_buffer +
 960                  ( (out_width  - in_width)  / 2 ) * fb_pixel_size +
 961                  ( (out_height - in_height) / 2 ) * fb_line_len +
 962                  x_offset * fb_pixel_size + y_offset * fb_line_len;
 963
 964         mp_msg(MSGT_VO, MSGL_DBG2, "frame_buffer @ %p\n", frame_buffer);
 965         mp_msg(MSGT_VO, MSGL_DBG2, "center @ %p\n", center);
 966         mp_msg(MSGT_VO, MSGL_V, "pixel per line: %d\n", fb_line_len / fb_pixel_size);
 967
 968         if (fs || vm)
 969             memset(frame_buffer, '\0', fb_line_len * fb_yres);
 970     }
 971     if (!(vt_fp = fopen("/dev/tty", "w"))) {
 972         mp_msg(MSGT_VO, MSGL_ERR, "can't fopen /dev/tty: %s\n", strerror(errno));
 973     }
 974
 975     vt_set_textarea(last_row, fb_yres);
 976
 977     return 0;
 978 }
 979
 980 static int query_format(uint32_t format)
 981 {
 982     if (!fb_preinit(0))
 983         return 0;
 984 #ifdef CONFIG_VIDIX
 985     if (vidix_name)
 986         return vidix_query_fourcc(format);
 987 #endif
 988     if ((format & IMGFMT_BGR_MASK) == IMGFMT_BGR) {
 989         int bpp = format & 0xff;
 990
 991         if (bpp == fb_bpp)
 992             return VFCAP_ACCEPT_STRIDE | VFCAP_CSP_SUPPORTED | VFCAP_CSP_SUPPORTED_BY_HW;
 993     }
 994     return 0;
 995 }
 996
 997 static void draw_alpha(int x0, int y0, int w, int h, unsigned char *src,
 998                        unsigned char *srca, int stride)
 999 {
1000     unsigned char *dst;
1001
1002     dst = center + fb_line_len * y0 + fb_pixel_size * x0;
1003
1004     (*draw_alpha_p)(w, h, src, srca, stride, dst, fb_line_len);
1005 }
1006
1007 static int draw_frame(uint8_t *src[])
1008 {
1009     return 1;
1010 }
1011
1012 static int draw_slice(uint8_t *src[], int stride[], int w, int h, int x, int y)
1013 {
1014     uint8_t *d;
1015
1016     d = center + fb_line_len * y + fb_pixel_size * x;
1017
1018     memcpy_pic2(d, src[0], w * fb_pixel_size, h, fb_line_len, stride[0], 1);
1019
1020     return 0;
1021 }
1022
1023 static void check_events(void)
1024 {
1025 }
1026
1027 static void flip_page(void)
1028 {
1029 }
1030
1031 static void draw_osd(void)
1032 {
1033     vo_draw_text(in_width, in_height, draw_alpha);
1034 }
1035
1036 static void uninit(void)
1037 {
1038     if (fb_cmap_changed) {
1039         if (ioctl(fb_dev_fd, FBIOPUTCMAP, &fb_oldcmap))
1040             mp_msg(MSGT_VO, MSGL_WARN, "Can't restore original cmap\n");
1041         fb_cmap_changed = 0;
1042     }
1043     if (ioctl(fb_dev_fd, FBIOGET_VSCREENINFO, &fb_vinfo))
1044         mp_msg(MSGT_VO, MSGL_WARN, "ioctl FBIOGET_VSCREENINFO: %s\n", strerror(errno));
1045     fb_orig_vinfo.xoffset = fb_vinfo.xoffset;
1046     fb_orig_vinfo.yoffset = fb_vinfo.yoffset;
1047     if (ioctl(fb_dev_fd, FBIOPUT_VSCREENINFO, &fb_orig_vinfo))
1048         mp_msg(MSGT_VO, MSGL_WARN, "Can't reset original fb_var_screeninfo: %s\n", strerror(errno));
1049     if (fb_tty_fd >= 0) {
1050         if (ioctl(fb_tty_fd, KDSETMODE, KD_TEXT) < 0)
1051             mp_msg(MSGT_VO, MSGL_WARN, "Can't restore text mode: %s\n", strerror(errno));
1052     }
1053     vt_set_textarea(0, fb_orig_vinfo.yres);
1054     if (vt_fp)
1055         fclose(vt_fp);
1056     close(fb_tty_fd);
1057     close(fb_dev_fd);
1058     if (frame_buffer)
1059         munmap(frame_buffer, fb_size);
1060     frame_buffer = NULL;
1061 #ifdef CONFIG_VIDIX
1062     if (vidix_name)
1063         vidix_term();
1064 #endif
1065     fb_preinit(1);
1066 }
1067
1068 static int preinit(const char *vo_subdevice)
1069 {
1070     pre_init_err = 0;
1071
1072     if (vo_subdevice) {
1073 #ifdef CONFIG_VIDIX
1074         if (memcmp(vo_subdevice, "vidix", 5) == 0)
1075             vidix_name = &vo_subdevice[5];
1076         if (vidix_name)
1077             pre_init_err = vidix_preinit(vidix_name, &video_out_fbdev);
1078         else
1079 #endif
1080         {
1081             if (fb_dev_name)
1082                 free(fb_dev_name);
1083             fb_dev_name = strdup(vo_subdevice);
1084         }
1085     }
1086     if (!pre_init_err)
1087         return pre_init_err = fb_preinit(0) ? 0 : -1;
1088     return -1;
1089 }
1090
1091 static uint32_t get_image(mp_image_t *mpi)
1092 {
1093     if (!IMGFMT_IS_BGR(mpi->imgfmt) ||
1094         IMGFMT_BGR_DEPTH(mpi->imgfmt) != fb_bpp ||
1095         (mpi->type != MP_IMGTYPE_STATIC && mpi->type != MP_IMGTYPE_TEMP) ||
1096         (mpi->flags & MP_IMGFLAG_PLANAR) ||
1097         (mpi->flags & MP_IMGFLAG_YUV) ||
1098         mpi->width != in_width ||
1099         mpi->height != in_height
1100        )
1101         return VO_FALSE;
1102
1103     mpi->planes[0] = center;
1104     mpi->stride[0] = fb_line_len;
1105     mpi->flags    |= MP_IMGFLAG_DIRECT;
1106     return VO_TRUE;
1107 }
1108
1109 static int control(uint32_t request, void *data, ...)
1110 {
1111     switch (request) {
1112     case VOCTRL_GET_IMAGE:
1113         return get_image(data);
1114     case VOCTRL_QUERY_FORMAT:
1115         return query_format(*(uint32_t*)data);
1116     }
1117
1118 #ifdef CONFIG_VIDIX
1119     if (vidix_name) {
1120         switch (request) {
1121         case VOCTRL_SET_EQUALIZER:
1122         {
1123             va_list ap;
1124             int value;
1125
1126             va_start(ap, data);
1127             value = va_arg(ap, int);
1128             va_end(ap);
1129
1130             return vidix_control(request, data, value);
1131         }
1132         case VOCTRL_GET_EQUALIZER:
1133         {
1134             va_list ap;
1135             int *value;
1136
1137             va_start(ap, data);
1138             value = va_arg(ap, int*);
1139             va_end(ap);
1140
1141             return vidix_control(request, data, value);
1142         }
1143         }
1144     }
1145 #endif
1146
1147     return VO_NOTIMPL;
1148 }