libvo/video_out.c

   1 /*
   2  * libvo common functions, variables used by many/all drivers.
   3  *
   4  * This file is part of MPlayer.
   5  *
   6  * MPlayer is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * MPlayer is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <assert.h>
  25 #include <stdbool.h>
  26
  27 #include <unistd.h>
  28 //#include <sys/mman.h>
  29
  30 #include "config.h"
  31 #include "options.h"
  32 #include "talloc.h"
  33 #include "video_out.h"
  34 #include "aspect.h"
  35 #include "geometry.h"
  36 #include "old_vo_wrapper.h"
  37 #include "input/input.h"
  38 #include "mp_fifo.h"
  39
  40
  41 #include "mp_msg.h"
  42
  43 #include "osdep/shmem.h"
  44 #ifdef CONFIG_X11
  45 #include "x11_common.h"
  46 #endif
  47
  48 int xinerama_screen = -1;
  49 int xinerama_x;
  50 int xinerama_y;
  51
  52 int vo_nomouse_input = 0;
  53 int vo_grabpointer = 1;
  54 int vo_doublebuffering = 1;
  55 int vo_vsync = 0;
  56 int vo_fs = 0;
  57 int vo_fsmode = 0;
  58 float vo_panscan = 0.0f;
  59 int vo_adapter_num=0;
  60 int vo_refresh_rate=0;
  61 int vo_keepaspect=1;
  62 int vo_rootwin=0;
  63 int vo_border=1;
  64 int64_t WinID = -1;
  65
  66 int vo_pts=0; // for hw decoding
  67 float vo_fps=0;
  68
  69 char *vo_subdevice = NULL;
  70 int vo_directrendering=0;
  71
  72 int vo_colorkey = 0x0000ff00; // default colorkey is green
  73                               // (0xff000000 means that colorkey has been disabled)
  74
  75
  76 //
  77 // Externally visible list of all vo drivers
  78 //
  79 extern struct vo_driver video_out_mga;
  80 extern struct vo_driver video_out_xmga;
  81 extern struct vo_driver video_out_x11;
  82 extern struct vo_driver video_out_xover;
  83 extern struct vo_driver video_out_vdpau;
  84 extern struct vo_driver video_out_xv;
  85 extern struct vo_driver video_out_gl_nosw;
  86 extern struct vo_driver video_out_gl;
  87 extern struct vo_driver video_out_gl2;
  88 extern struct vo_driver video_out_matrixview;
  89 extern struct vo_driver video_out_dga;
  90 extern struct vo_driver video_out_sdl;
  91 extern struct vo_driver video_out_3dfx;
  92 extern struct vo_driver video_out_tdfxfb;
  93 extern struct vo_driver video_out_s3fb;
  94 extern struct vo_driver video_out_wii;
  95 extern struct vo_driver video_out_null;
  96 extern struct vo_driver video_out_bl;
  97 extern struct vo_driver video_out_fbdev;
  98 extern struct vo_driver video_out_fbdev2;
  99 extern struct vo_driver video_out_svga;
 100 extern struct vo_driver video_out_png;
 101 extern struct vo_driver video_out_ggi;
 102 extern struct vo_driver video_out_aa;
 103 extern struct vo_driver video_out_caca;
 104 extern struct vo_driver video_out_mpegpes;
 105 extern struct vo_driver video_out_yuv4mpeg;
 106 extern struct vo_driver video_out_direct3d;
 107 extern struct vo_driver video_out_directx;
 108 extern struct vo_driver video_out_kva;
 109 extern struct vo_driver video_out_dxr3;
 110 extern struct vo_driver video_out_ivtv;
 111 extern struct vo_driver video_out_v4l2;
 112 extern struct vo_driver video_out_jpeg;
 113 extern struct vo_driver video_out_gif89a;
 114 extern struct vo_driver video_out_vesa;
 115 extern struct vo_driver video_out_directfb;
 116 extern struct vo_driver video_out_dfbmga;
 117 extern struct vo_driver video_out_tdfx_vid;
 118 extern struct vo_driver video_out_xvr100;
 119 extern struct vo_driver video_out_tga;
 120 extern struct vo_driver video_out_corevideo;
 121 extern struct vo_driver video_out_quartz;
 122 extern struct vo_driver video_out_pnm;
 123 extern struct vo_driver video_out_md5sum;
 124
 125 const struct vo_driver *video_out_drivers[] =
 126 {
 127 #ifdef CONFIG_XVR100
 128         &video_out_xvr100,
 129 #endif
 130 #ifdef CONFIG_TDFX_VID
 131         &video_out_tdfx_vid,
 132 #endif
 133 #ifdef CONFIG_DIRECTX
 134         &video_out_directx,
 135 #endif
 136 #ifdef CONFIG_DIRECT3D
 137         &video_out_direct3d,
 138 #endif
 139 #ifdef CONFIG_KVA
 140         &video_out_kva,
 141 #endif
 142 #ifdef CONFIG_COREVIDEO
 143         &video_out_corevideo,
 144 #endif
 145 #ifdef CONFIG_QUARTZ
 146         &video_out_quartz,
 147 #endif
 148 #ifdef CONFIG_XMGA
 149         &video_out_xmga,
 150 #endif
 151 #ifdef CONFIG_MGA
 152         &video_out_mga,
 153 #endif
 154 #ifdef CONFIG_TDFXFB
 155         &video_out_tdfxfb,
 156 #endif
 157 #ifdef CONFIG_S3FB
 158         &video_out_s3fb,
 159 #endif
 160 #ifdef CONFIG_WII
 161         &video_out_wii,
 162 #endif
 163 #ifdef CONFIG_3DFX
 164         &video_out_3dfx,
 165 #endif
 166 #if CONFIG_VDPAU
 167         &video_out_vdpau,
 168 #endif
 169 #ifdef CONFIG_XV
 170         &video_out_xv,
 171 #endif
 172 #ifdef CONFIG_X11
 173 #ifdef CONFIG_GL
 174         &video_out_gl_nosw,
 175 #endif
 176         &video_out_x11,
 177         &video_out_xover,
 178 #endif
 179 #ifdef CONFIG_SDL
 180         &video_out_sdl,
 181 #endif
 182 #ifdef CONFIG_GL
 183         &video_out_gl,
 184         &video_out_gl2,
 185 #endif
 186 #ifdef CONFIG_DGA
 187         &video_out_dga,
 188 #endif
 189 #ifdef CONFIG_GGI
 190         &video_out_ggi,
 191 #endif
 192 #ifdef CONFIG_FBDEV
 193         &video_out_fbdev,
 194         &video_out_fbdev2,
 195 #endif
 196 #ifdef CONFIG_SVGALIB
 197         &video_out_svga,
 198 #endif
 199 #ifdef CONFIG_MATRIXVIEW
 200         &video_out_matrixview,
 201 #endif
 202 #ifdef CONFIG_AA
 203         &video_out_aa,
 204 #endif
 205 #ifdef CONFIG_CACA
 206         &video_out_caca,
 207 #endif
 208 #ifdef CONFIG_DXR3
 209         &video_out_dxr3,
 210 #endif
 211 #ifdef CONFIG_IVTV
 212         &video_out_ivtv,
 213 #endif
 214 #ifdef CONFIG_V4L2_DECODER
 215         &video_out_v4l2,
 216 #endif
 217 #ifdef CONFIG_BL
 218         &video_out_bl,
 219 #endif
 220 #ifdef CONFIG_VESA
 221         &video_out_vesa,
 222 #endif
 223 #ifdef CONFIG_DIRECTFB
 224         &video_out_dfbmga,
 225 #endif
 226         &video_out_null,
 227         // should not be auto-selected
 228 #ifdef CONFIG_DIRECTFB
 229         // vo directfb can call exit() if initialization fails
 230         &video_out_directfb,
 231 #endif
 232         &video_out_mpegpes,
 233 #ifdef CONFIG_YUV4MPEG
 234         &video_out_yuv4mpeg,
 235 #endif
 236 #ifdef CONFIG_FFMPEG
 237         &video_out_png,
 238 #endif
 239 #ifdef CONFIG_JPEG
 240         &video_out_jpeg,
 241 #endif
 242 #ifdef CONFIG_GIF
 243         &video_out_gif89a,
 244 #endif
 245 #ifdef CONFIG_TGA
 246         &video_out_tga,
 247 #endif
 248 #ifdef CONFIG_PNM
 249         &video_out_pnm,
 250 #endif
 251 #ifdef CONFIG_MD5SUM
 252         &video_out_md5sum,
 253 #endif
 254         NULL
 255 };
 256
 257
 258 static int vo_preinit(struct vo *vo, const char *arg)
 259 {
 260     return vo->driver->preinit(vo, arg);
 261 }
 262
 263 int vo_control(struct vo *vo, uint32_t request, void *data)
 264 {
 265     return vo->driver->control(vo, request, data);
 266 }
 267
 268 // Return -1 if driver appears not to support a draw_image interface,
 269 // 0 otherwise (whether the driver actually drew something or not).
 270 int vo_draw_image(struct vo *vo, struct mp_image *mpi, double pts)
 271 {
 272     if (!vo->config_ok)
 273         return 0;
 274     if (vo->driver->buffer_frames) {
 275         vo->driver->draw_image(vo, mpi, pts);
 276         return 0;
 277     }
 278     vo->frame_loaded = true;
 279     vo->next_pts = pts;
 280     if (vo_control(vo, VOCTRL_DRAW_IMAGE, mpi) == VO_NOTIMPL)
 281         return -1;
 282     return 0;
 283 }
 284
 285 int vo_get_buffered_frame(struct vo *vo, bool eof)
 286 {
 287     if (!vo->config_ok)
 288         return -1;
 289     if (vo->frame_loaded)
 290         return 0;
 291     if (!vo->driver->buffer_frames)
 292         return -1;
 293     vo->driver->get_buffered_frame(vo, eof);
 294     return vo->frame_loaded ? 0 : -1;
 295 }
 296
 297 void vo_skip_frame(struct vo *vo)
 298 {
 299     vo->frame_loaded = false;
 300 }
 301
 302 int vo_draw_frame(struct vo *vo, uint8_t *src[])
 303 {
 304     assert(!vo->driver->is_new);
 305     if (!vo->config_ok)
 306         return 0;
 307     return old_vo_draw_frame(vo, src);
 308 }
 309
 310 int vo_draw_slice(struct vo *vo, uint8_t *src[], int stride[], int w, int h, int x, int y)
 311 {
 312     return vo->driver->draw_slice(vo, src, stride, w, h, x, y);
 313 }
 314
 315 void vo_draw_osd(struct vo *vo, struct osd_state *osd)
 316 {
 317     if (!vo->config_ok)
 318         return;
 319     vo->driver->draw_osd(vo, osd);
 320 }
 321
 322 void vo_flip_page(struct vo *vo, unsigned int pts_us, int duration)
 323 {
 324     if (!vo->config_ok)
 325         return;
 326     vo->frame_loaded = false;
 327     vo->next_pts = MP_NOPTS_VALUE;
 328     if (vo->driver->flip_page_timed)
 329         vo->driver->flip_page_timed(vo, pts_us, duration);
 330     else
 331         vo->driver->flip_page(vo);
 332 }
 333
 334 void vo_check_events(struct vo *vo)
 335 {
 336     if (!vo->config_ok) {
 337         if (vo->registered_fd != -1)
 338             mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
 339         vo->registered_fd = -1;
 340         return;
 341     }
 342     vo->driver->check_events(vo);
 343 }
 344
 345 void vo_seek_reset(struct vo *vo)
 346 {
 347     vo_control(vo, VOCTRL_RESET, NULL);
 348     vo->frame_loaded = false;
 349 }
 350
 351 void vo_destroy(struct vo *vo)
 352 {
 353     if (vo->registered_fd != -1)
 354         mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
 355     vo->driver->uninit(vo);
 356     talloc_free(vo);
 357 }
 358
 359 void list_video_out(void)
 360 {
 361     int i = 0;
 362     mp_tmsg(MSGT_CPLAYER, MSGL_INFO, "Available video output drivers:\n");
 363     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_OUTPUTS\n");
 364     while (video_out_drivers[i]) {
 365         const vo_info_t *info = video_out_drivers[i++]->info;
 366         mp_msg(MSGT_GLOBAL, MSGL_INFO,"\t%s\t%s\n", info->short_name, info->name);
 367     }
 368     mp_msg(MSGT_GLOBAL, MSGL_INFO,"\n");
 369 }
 370
 371 struct vo *init_best_video_out(struct MPOpts *opts, struct vo_x11_state *x11,
 372                                struct mp_fifo *key_fifo,
 373                                struct input_ctx *input_ctx)
 374 {
 375     char **vo_list = opts->video_driver_list;
 376     int i;
 377     struct vo *vo = talloc_ptrtype(NULL, vo);
 378     struct vo initial_values = {
 379         .opts = opts,
 380         .x11 = x11,
 381         .key_fifo = key_fifo,
 382         .input_ctx = input_ctx,
 383         .event_fd = -1,
 384         .registered_fd = -1,
 385     };
 386     // first try the preferred drivers, with their optional subdevice param:
 387     if (vo_list && vo_list[0])
 388         while (vo_list[0][0]) {
 389             char *name = strdup(vo_list[0]);
 390             vo_subdevice = strchr(name,':');
 391             if (!strcmp(name, "pgm"))
 392                 mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "The pgm video output driver has been replaced by -vo pnm:pgmyuv.\n");
 393             if (!strcmp(name, "md5"))
 394                 mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "The md5 video output driver has been replaced by -vo md5sum.\n");
 395             if (vo_subdevice) {
 396                 vo_subdevice[0] = 0;
 397                 ++vo_subdevice;
 398             }
 399             for (i = 0; video_out_drivers[i]; i++) {
 400                 const struct vo_driver *video_driver = video_out_drivers[i];
 401                 const vo_info_t *info = video_driver->info;
 402                 if (!strcmp(info->short_name, name)) {
 403                     // name matches, try it
 404                     *vo = initial_values;
 405                     vo->driver = video_driver;
 406                     if (!vo_preinit(vo, vo_subdevice)) {
 407                         free(name);
 408                         return vo; // success!
 409                     }
 410                     talloc_free_children(vo);
 411                 }
 412             }
 413             // continue...
 414             free(name);
 415             ++vo_list;
 416             if (!(vo_list[0]))
 417                 return NULL; // do NOT fallback to others
 418         }
 419     // now try the rest...
 420     vo_subdevice = NULL;
 421     for (i = 0; video_out_drivers[i]; i++) {
 422         const struct vo_driver *video_driver = video_out_drivers[i];
 423         *vo = initial_values;
 424         vo->driver = video_driver;
 425         if (!vo_preinit(vo, vo_subdevice))
 426             return vo; // success!
 427         talloc_free_children(vo);
 428     }
 429     free(vo);
 430     return NULL;
 431 }
 432
 433 static int event_fd_callback(void *ctx, int fd)
 434 {
 435     struct vo *vo = ctx;
 436     vo_check_events(vo);
 437     return mplayer_get_key(vo->key_fifo, 0);
 438 }
 439
 440 int vo_config(struct vo *vo, uint32_t width, uint32_t height,
 441                      uint32_t d_width, uint32_t d_height, uint32_t flags,
 442                      char *title, uint32_t format)
 443 {
 444     struct MPOpts *opts = vo->opts;
 445     panscan_init(vo);
 446     aspect_save_orig(vo, width, height);
 447     aspect_save_prescale(vo, d_width, d_height);
 448
 449     if (vo_control(vo, VOCTRL_UPDATE_SCREENINFO, NULL) == VO_TRUE) {
 450         aspect(vo, &d_width, &d_height, A_NOZOOM);
 451         vo->dx = (int)(opts->vo_screenwidth - d_width) / 2;
 452         vo->dy = (int)(opts->vo_screenheight - d_height) / 2;
 453         geometry(&vo->dx, &vo->dy, &d_width, &d_height,
 454                  opts->vo_screenwidth, opts->vo_screenheight);
 455         geometry_xy_changed |= xinerama_screen >= 0;
 456         vo->dx += xinerama_x;
 457         vo->dy += xinerama_y;
 458         vo->dwidth = d_width;
 459         vo->dheight = d_height;
 460     }
 461
 462     int ret = vo->driver->config(vo, width, height, d_width, d_height, flags,
 463                                  title, format);
 464     vo->config_ok = (ret == 0);
 465     vo->config_count += vo->config_ok;
 466     if (vo->registered_fd == -1 && vo->event_fd != -1 && vo->config_ok) {
 467         mp_input_add_key_fd(vo->input_ctx, vo->event_fd, 1, event_fd_callback,
 468                             NULL, vo);
 469         vo->registered_fd = vo->event_fd;
 470     }
 471     return ret;
 472 }
 473
 474 /**
 475  * \brief lookup an integer in a table, table must have 0 as the last key
 476  * \param key key to search for
 477  * \result translation corresponding to key or "to" value of last mapping
 478  *         if not found.
 479  */
 480 int lookup_keymap_table(const struct mp_keymap *map, int key) {
 481   while (map->from && map->from != key) map++;
 482   return map->to;
 483 }
 484
 485 /**
 486  * \brief helper function for the kind of panscan-scaling that needs a source
 487  *        and destination rectangle like Direct3D and VDPAU
 488  */
 489 static void src_dst_split_scaling(int src_size, int dst_size, int scaled_src_size,
 490                                   int *src_start, int *src_end, int *dst_start, int *dst_end) {
 491   if (scaled_src_size > dst_size) {
 492     int border = src_size * (scaled_src_size - dst_size) / scaled_src_size;
 493     // round to a multiple of 2, this is at least needed for vo_direct3d and ATI cards
 494     border = (border / 2 + 1) & ~1;
 495     *src_start = border;
 496     *src_end   = src_size - border;
 497     *dst_start = 0;
 498     *dst_end   = dst_size;
 499   } else {
 500     *src_start = 0;
 501     *src_end   = src_size;
 502     *dst_start = (dst_size - scaled_src_size) / 2;
 503     *dst_end   = *dst_start + scaled_src_size;
 504   }
 505 }
 506
 507 /**
 508  * Calculate the appropriate source and destination rectangle to
 509  * get a correctly scaled picture, including pan-scan.
 510  * Can be extended to take future cropping support into account.
 511  *
 512  * \param crop specifies the cropping border size in the left, right, top and bottom members, may be NULL
 513  * \param borders the border values as e.g. EOSD (ASS) and properly placed DVD highlight support requires,
 514  *                may be NULL and only left and top are currently valid.
 515  */
 516 void calc_src_dst_rects(struct vo *vo, int src_width, int src_height,
 517                         struct vo_rect *src, struct vo_rect *dst,
 518                         struct vo_rect *borders, const struct vo_rect *crop)
 519 {
 520   static const struct vo_rect no_crop = {0, 0, 0, 0, 0, 0};
 521   int scaled_width  = 0;
 522   int scaled_height = 0;
 523   if (!crop) crop = &no_crop;
 524   src_width  -= crop->left + crop->right;
 525   src_height -= crop->top  + crop->bottom;
 526   if (src_width  < 2) src_width  = 2;
 527   if (src_height < 2) src_height = 2;
 528   dst->left = 0; dst->right  = vo->dwidth;
 529   dst->top  = 0; dst->bottom = vo->dheight;
 530   src->left = 0; src->right  = src_width;
 531   src->top  = 0; src->bottom = src_height;
 532   if (borders) {
 533     borders->left = 0; borders->top = 0;
 534   }
 535   if (aspect_scaling()) {
 536     aspect(vo, &scaled_width, &scaled_height, A_WINZOOM);
 537     panscan_calc_windowed(vo);
 538     scaled_width  += vo->panscan_x;
 539     scaled_height += vo->panscan_y;
 540     if (borders) {
 541       borders->left = (vo->dwidth  - scaled_width ) / 2;
 542       borders->top  = (vo->dheight - scaled_height) / 2;
 543     }
 544     src_dst_split_scaling(src_width, vo->dwidth, scaled_width,
 545                           &src->left, &src->right, &dst->left, &dst->right);
 546     src_dst_split_scaling(src_height, vo->dheight, scaled_height,
 547                           &src->top, &src->bottom, &dst->top, &dst->bottom);
 548   }
 549   src->left += crop->left; src->right  += crop->left;
 550   src->top  += crop->top;  src->bottom += crop->top;
 551   src->width  = src->right  - src->left;
 552   src->height = src->bottom - src->top;
 553   dst->width  = dst->right  - dst->left;
 554   dst->height = dst->bottom - dst->top;
 555 }
 556
 557 /**
 558  * Generates a mouse movement message if those are enable and sends it
 559  * to the "main" MPlayer.
 560  *
 561  * \param posx new x position of mouse
 562  * \param posy new y position of mouse
 563  */
 564 void vo_mouse_movement(struct vo *vo, int posx, int posy)
 565 {
 566   char cmd_str[40];
 567   if (!enable_mouse_movements)
 568     return;
 569   snprintf(cmd_str, sizeof(cmd_str), "set_mouse_pos %i %i", posx, posy);
 570   mp_input_queue_cmd(vo->input_ctx, mp_input_parse_cmd(cmd_str));
 571 }
 572
 573 #if defined(CONFIG_FBDEV) || defined(CONFIG_VESA)
 574 /* Borrowed from vo_fbdev.c
 575 Monitor ranges related functions*/
 576
 577 char *monitor_hfreq_str = NULL;
 578 char *monitor_vfreq_str = NULL;
 579 char *monitor_dotclock_str = NULL;
 580
 581 float range_max(range_t *r)
 582 {
 583 float max = 0;
 584
 585         for (/* NOTHING */; (r->min != -1 && r->max != -1); r++)
 586                 if (max < r->max) max = r->max;
 587         return max;
 588 }
 589
 590
 591 int in_range(range_t *r, float f)
 592 {
 593         for (/* NOTHING */; (r->min != -1 && r->max != -1); r++)
 594                 if (f >= r->min && f <= r->max)
 595                         return 1;
 596         return 0;
 597 }
 598
 599 range_t *str2range(char *s)
 600 {
 601         float tmp_min, tmp_max;
 602         char *endptr = s;       // to start the loop
 603         range_t *r = NULL;
 604         int i;
 605
 606         if (!s)
 607                 return NULL;
 608         for (i = 0; *endptr; i++) {
 609                 if (*s == ',')
 610                         goto out_err;
 611                 if (!(r = realloc(r, sizeof(*r) * (i + 2)))) {
 612                         mp_msg(MSGT_GLOBAL, MSGL_WARN,"can't realloc 'r'\n");
 613                         return NULL;
 614                 }
 615                 tmp_min = strtod(s, &endptr);
 616                 if (*endptr == 'k' || *endptr == 'K') {
 617                         tmp_min *= 1000.0;
 618                         endptr++;
 619                 } else if (*endptr == 'm' || *endptr == 'M') {
 620                         tmp_min *= 1000000.0;
 621                         endptr++;
 622                 }
 623                 if (*endptr == '-') {
 624                         tmp_max = strtod(endptr + 1, &endptr);
 625                         if (*endptr == 'k' || *endptr == 'K') {
 626                                 tmp_max *= 1000.0;
 627                                 endptr++;
 628                         } else if (*endptr == 'm' || *endptr == 'M') {
 629                                 tmp_max *= 1000000.0;
 630                                 endptr++;
 631                         }
 632                         if (*endptr != ',' && *endptr)
 633                                 goto out_err;
 634                 } else if (*endptr == ',' || !*endptr) {
 635                         tmp_max = tmp_min;
 636                 } else
 637                         goto out_err;
 638                 r[i].min = tmp_min;
 639                 r[i].max = tmp_max;
 640                 if (r[i].min < 0 || r[i].max < 0)
 641                         goto out_err;
 642                 s = endptr + 1;
 643         }
 644         r[i].min = r[i].max = -1;
 645         return r;
 646 out_err:
 647         free(r);
 648         return NULL;
 649 }
 650
 651 /* Borrowed from vo_fbdev.c END */
 652 #endif