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 #include "m_config.h"
  40 #include "mp_msg.h"
  41
  42 #include "osdep/shmem.h"
  43 #ifdef CONFIG_X11
  44 #include "x11_common.h"
  45 #endif
  46
  47 int xinerama_screen = -1;
  48 int xinerama_x;
  49 int xinerama_y;
  50
  51 int vo_nomouse_input = 0;
  52 int vo_grabpointer = 1;
  53 int vo_doublebuffering = 1;
  54 int vo_vsync = 0;
  55 int vo_fs = 0;
  56 int vo_fsmode = 0;
  57 float vo_panscan = 0.0f;
  58 int vo_adapter_num=0;
  59 int vo_refresh_rate=0;
  60 int vo_keepaspect=1;
  61 int vo_rootwin=0;
  62 int vo_border=1;
  63 int64_t WinID = -1;
  64
  65 int vo_pts=0; // for hw decoding
  66 float vo_fps=0;
  67
  68 char *vo_subdevice = NULL;
  69 int vo_directrendering=0;
  70
  71 int vo_colorkey = 0x0000ff00; // default colorkey is green
  72                               // (0xff000000 means that colorkey has been disabled)
  73
  74
  75 //
  76 // Externally visible list of all vo drivers
  77 //
  78 extern struct vo_driver video_out_mga;
  79 extern struct vo_driver video_out_xmga;
  80 extern struct vo_driver video_out_x11;
  81 extern struct vo_driver video_out_xover;
  82 extern struct vo_driver video_out_vdpau;
  83 extern struct vo_driver video_out_xv;
  84 extern struct vo_driver video_out_gl_nosw;
  85 extern struct vo_driver video_out_gl;
  86 extern struct vo_driver video_out_gl_sdl;
  87 extern struct vo_driver video_out_dga;
  88 extern struct vo_driver video_out_sdl;
  89 extern struct vo_driver video_out_3dfx;
  90 extern struct vo_driver video_out_tdfxfb;
  91 extern struct vo_driver video_out_s3fb;
  92 extern struct vo_driver video_out_wii;
  93 extern struct vo_driver video_out_null;
  94 extern struct vo_driver video_out_bl;
  95 extern struct vo_driver video_out_fbdev;
  96 extern struct vo_driver video_out_fbdev2;
  97 extern struct vo_driver video_out_svga;
  98 extern struct vo_driver video_out_png;
  99 extern struct vo_driver video_out_ggi;
 100 extern struct vo_driver video_out_aa;
 101 extern struct vo_driver video_out_caca;
 102 extern struct vo_driver video_out_mpegpes;
 103 extern struct vo_driver video_out_yuv4mpeg;
 104 extern struct vo_driver video_out_direct3d;
 105 extern struct vo_driver video_out_directx;
 106 extern struct vo_driver video_out_kva;
 107 extern struct vo_driver video_out_dxr3;
 108 extern struct vo_driver video_out_ivtv;
 109 extern struct vo_driver video_out_v4l2;
 110 extern struct vo_driver video_out_jpeg;
 111 extern struct vo_driver video_out_gif89a;
 112 extern struct vo_driver video_out_vesa;
 113 extern struct vo_driver video_out_directfb;
 114 extern struct vo_driver video_out_dfbmga;
 115 extern struct vo_driver video_out_tdfx_vid;
 116 extern struct vo_driver video_out_xvr100;
 117 extern struct vo_driver video_out_tga;
 118 extern struct vo_driver video_out_corevideo;
 119 extern struct vo_driver video_out_sharedbuffer;
 120 extern struct vo_driver video_out_pnm;
 121 extern struct vo_driver video_out_md5sum;
 122
 123 const struct vo_driver *video_out_drivers[] =
 124 {
 125 #ifdef CONFIG_XVR100
 126         &video_out_xvr100,
 127 #endif
 128 #ifdef CONFIG_TDFX_VID
 129         &video_out_tdfx_vid,
 130 #endif
 131 #ifdef CONFIG_DIRECTX
 132         &video_out_directx,
 133 #endif
 134 #ifdef CONFIG_DIRECT3D
 135         &video_out_direct3d,
 136 #endif
 137 #ifdef CONFIG_KVA
 138         &video_out_kva,
 139 #endif
 140 #ifdef CONFIG_GL_COCOA
 141         &video_out_gl,
 142 #endif
 143 #ifdef CONFIG_COREVIDEO
 144         &video_out_corevideo,
 145 #endif
 146 #ifdef CONFIG_XMGA
 147         &video_out_xmga,
 148 #endif
 149 #ifdef CONFIG_MGA
 150         &video_out_mga,
 151 #endif
 152 #ifdef CONFIG_TDFXFB
 153         &video_out_tdfxfb,
 154 #endif
 155 #ifdef CONFIG_S3FB
 156         &video_out_s3fb,
 157 #endif
 158 #ifdef CONFIG_WII
 159         &video_out_wii,
 160 #endif
 161 #ifdef CONFIG_3DFX
 162         &video_out_3dfx,
 163 #endif
 164 #if CONFIG_VDPAU
 165         &video_out_vdpau,
 166 #endif
 167 #ifdef CONFIG_XV
 168         &video_out_xv,
 169 #endif
 170 #ifdef CONFIG_X11
 171 #ifdef CONFIG_GL
 172         &video_out_gl_nosw,
 173 #endif
 174         &video_out_x11,
 175         &video_out_xover,
 176 #endif
 177 #ifdef CONFIG_SDL
 178         &video_out_sdl,
 179 #endif
 180 #if (defined CONFIG_GL && !defined CONFIG_GL_COCOA)
 181         &video_out_gl,
 182 #endif
 183 #ifdef CONFIG_GL_SDL
 184         &video_out_gl_sdl,
 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_AA
 200         &video_out_aa,
 201 #endif
 202 #ifdef CONFIG_CACA
 203         &video_out_caca,
 204 #endif
 205 #ifdef CONFIG_DXR3
 206         &video_out_dxr3,
 207 #endif
 208 #ifdef CONFIG_IVTV
 209         &video_out_ivtv,
 210 #endif
 211 #ifdef CONFIG_V4L2_DECODER
 212         &video_out_v4l2,
 213 #endif
 214 #ifdef CONFIG_BL
 215         &video_out_bl,
 216 #endif
 217 #ifdef CONFIG_VESA
 218         &video_out_vesa,
 219 #endif
 220 #ifdef CONFIG_DIRECTFB
 221         &video_out_dfbmga,
 222 #endif
 223         &video_out_null,
 224         // should not be auto-selected
 225 #ifdef CONFIG_DIRECTFB
 226         // vo directfb can call exit() if initialization fails
 227         &video_out_directfb,
 228 #endif
 229         &video_out_mpegpes,
 230 #ifdef CONFIG_YUV4MPEG
 231         &video_out_yuv4mpeg,
 232 #endif
 233         &video_out_png,
 234 #ifdef CONFIG_JPEG
 235         &video_out_jpeg,
 236 #endif
 237 #ifdef CONFIG_GIF
 238         &video_out_gif89a,
 239 #endif
 240 #ifdef CONFIG_TGA
 241         &video_out_tga,
 242 #endif
 243 #ifdef CONFIG_PNM
 244         &video_out_pnm,
 245 #endif
 246 #ifdef CONFIG_MD5SUM
 247         &video_out_md5sum,
 248 #endif
 249 #ifdef CONFIG_SHAREDBUFFER
 250         &video_out_sharedbuffer,
 251 #endif
 252         NULL
 253 };
 254
 255
 256 static int vo_preinit(struct vo *vo, char *arg)
 257 {
 258     if (vo->driver->privsize)
 259         vo->priv = talloc_zero_size(vo, vo->driver->privsize);
 260     if (vo->driver->options) {
 261         struct m_config *cfg = m_config_simple(vo->driver->options);
 262         m_config_initialize(cfg, vo->priv);
 263         char n[50];
 264         int l = snprintf(n, sizeof(n), "vo/%s", vo->driver->info->short_name);
 265         assert(l < sizeof(n));
 266         int r = m_config_parse_suboptions(cfg, vo->priv, n, arg);
 267         talloc_free(cfg);
 268         if (r < 0)
 269             return r;
 270     }
 271     return vo->driver->preinit(vo, arg);
 272 }
 273
 274 int vo_control(struct vo *vo, uint32_t request, void *data)
 275 {
 276     return vo->driver->control(vo, request, data);
 277 }
 278
 279 // Return -1 if driver appears not to support a draw_image interface,
 280 // 0 otherwise (whether the driver actually drew something or not).
 281 int vo_draw_image(struct vo *vo, struct mp_image *mpi, double pts)
 282 {
 283     if (!vo->config_ok)
 284         return 0;
 285     if (vo->driver->buffer_frames) {
 286         vo->driver->draw_image(vo, mpi, pts);
 287         return 0;
 288     }
 289     vo->frame_loaded = true;
 290     vo->next_pts = pts;
 291     // Guaranteed to support at least DRAW_IMAGE later
 292     if (vo->driver->is_new) {
 293         vo->waiting_mpi = mpi;
 294         return 0;
 295     }
 296     if (vo_control(vo, VOCTRL_DRAW_IMAGE, mpi) == VO_NOTIMPL)
 297         return -1;
 298     return 0;
 299 }
 300
 301 int vo_redraw_frame(struct vo *vo)
 302 {
 303     if (!vo->config_ok || !vo->hasframe)
 304         return -1;
 305     if (vo_control(vo, VOCTRL_REDRAW_FRAME, NULL) == true) {
 306         vo->redrawing = true;
 307         return 0;
 308     }
 309     return -1;
 310 }
 311
 312 int vo_get_buffered_frame(struct vo *vo, bool eof)
 313 {
 314     if (!vo->config_ok)
 315         return -1;
 316     if (vo->frame_loaded)
 317         return 0;
 318     if (!vo->driver->buffer_frames)
 319         return -1;
 320     vo->driver->get_buffered_frame(vo, eof);
 321     return vo->frame_loaded ? 0 : -1;
 322 }
 323
 324 void vo_skip_frame(struct vo *vo)
 325 {
 326     vo_control(vo, VOCTRL_SKIPFRAME, NULL);
 327     vo->frame_loaded = false;
 328 }
 329
 330 int vo_draw_frame(struct vo *vo, uint8_t *src[])
 331 {
 332     assert(!vo->driver->is_new);
 333     if (!vo->config_ok)
 334         return 0;
 335     return old_vo_draw_frame(vo, src);
 336 }
 337
 338 int vo_draw_slice(struct vo *vo, uint8_t *src[], int stride[], int w, int h, int x, int y)
 339 {
 340     return vo->driver->draw_slice(vo, src, stride, w, h, x, y);
 341 }
 342
 343 void vo_new_frame_imminent(struct vo *vo)
 344 {
 345     if (!vo->driver->is_new)
 346         return;
 347     if (vo->driver->buffer_frames)
 348         vo_control(vo, VOCTRL_NEWFRAME, NULL);
 349     else {
 350         vo_control(vo, VOCTRL_DRAW_IMAGE, vo->waiting_mpi);
 351         vo->waiting_mpi = NULL;
 352     }
 353 }
 354
 355 void vo_draw_osd(struct vo *vo, struct osd_state *osd)
 356 {
 357     if (!vo->config_ok)
 358         return;
 359     vo->driver->draw_osd(vo, osd);
 360 }
 361
 362 void vo_flip_page(struct vo *vo, unsigned int pts_us, int duration)
 363 {
 364     if (!vo->config_ok)
 365         return;
 366     if (!vo->redrawing) {
 367         vo->frame_loaded = false;
 368         vo->next_pts = MP_NOPTS_VALUE;
 369     }
 370     vo->want_redraw = false;
 371     vo->redrawing = false;
 372     if (vo->driver->flip_page_timed)
 373         vo->driver->flip_page_timed(vo, pts_us, duration);
 374     else
 375         vo->driver->flip_page(vo);
 376     vo->hasframe = true;
 377 }
 378
 379 void vo_check_events(struct vo *vo)
 380 {
 381     if (!vo->config_ok) {
 382         if (vo->registered_fd != -1)
 383             mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
 384         vo->registered_fd = -1;
 385         return;
 386     }
 387     vo->driver->check_events(vo);
 388 }
 389
 390 void vo_seek_reset(struct vo *vo)
 391 {
 392     vo_control(vo, VOCTRL_RESET, NULL);
 393     vo->frame_loaded = false;
 394     vo->hasframe = false;
 395 }
 396
 397 void vo_destroy(struct vo *vo)
 398 {
 399     if (vo->registered_fd != -1)
 400         mp_input_rm_key_fd(vo->input_ctx, vo->registered_fd);
 401     vo->driver->uninit(vo);
 402     talloc_free(vo);
 403 }
 404
 405 void list_video_out(void)
 406 {
 407     int i = 0;
 408     mp_tmsg(MSGT_CPLAYER, MSGL_INFO, "Available video output drivers:\n");
 409     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_VIDEO_OUTPUTS\n");
 410     while (video_out_drivers[i]) {
 411         const vo_info_t *info = video_out_drivers[i++]->info;
 412         mp_msg(MSGT_GLOBAL, MSGL_INFO,"\t%s\t%s\n", info->short_name, info->name);
 413     }
 414     mp_msg(MSGT_GLOBAL, MSGL_INFO,"\n");
 415 }
 416
 417 struct vo *init_best_video_out(struct MPOpts *opts, struct vo_x11_state *x11,
 418                                struct mp_fifo *key_fifo,
 419                                struct input_ctx *input_ctx)
 420 {
 421     char **vo_list = opts->video_driver_list;
 422     int i;
 423     struct vo *vo = talloc_ptrtype(NULL, vo);
 424     struct vo initial_values = {
 425         .opts = opts,
 426         .x11 = x11,
 427         .key_fifo = key_fifo,
 428         .input_ctx = input_ctx,
 429         .event_fd = -1,
 430         .registered_fd = -1,
 431     };
 432     // first try the preferred drivers, with their optional subdevice param:
 433     if (vo_list && vo_list[0])
 434         while (vo_list[0][0]) {
 435             char *name = strdup(vo_list[0]);
 436             vo_subdevice = strchr(name,':');
 437             if (!strcmp(name, "pgm"))
 438                 mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "The pgm video output driver has been replaced by -vo pnm:pgmyuv.\n");
 439             if (!strcmp(name, "md5"))
 440                 mp_tmsg(MSGT_CPLAYER, MSGL_ERR, "The md5 video output driver has been replaced by -vo md5sum.\n");
 441             if (vo_subdevice) {
 442                 vo_subdevice[0] = 0;
 443                 ++vo_subdevice;
 444             }
 445             for (i = 0; video_out_drivers[i]; i++) {
 446                 const struct vo_driver *video_driver = video_out_drivers[i];
 447                 const vo_info_t *info = video_driver->info;
 448                 if (!strcmp(info->short_name, name)) {
 449                     // name matches, try it
 450                     *vo = initial_values;
 451                     vo->driver = video_driver;
 452                     if (!vo_preinit(vo, vo_subdevice)) {
 453                         free(name);
 454                         return vo; // success!
 455                     }
 456                     talloc_free_children(vo);
 457                 }
 458             }
 459             // continue...
 460             free(name);
 461             ++vo_list;
 462             if (!(vo_list[0]))
 463                 return NULL; // do NOT fallback to others
 464         }
 465     // now try the rest...
 466     vo_subdevice = NULL;
 467     for (i = 0; video_out_drivers[i]; i++) {
 468         const struct vo_driver *video_driver = video_out_drivers[i];
 469         *vo = initial_values;
 470         vo->driver = video_driver;
 471         if (!vo_preinit(vo, vo_subdevice))
 472             return vo; // success!
 473         talloc_free_children(vo);
 474     }
 475     free(vo);
 476     return NULL;
 477 }
 478
 479 static int event_fd_callback(void *ctx, int fd)
 480 {
 481     struct vo *vo = ctx;
 482     vo_check_events(vo);
 483     return MP_INPUT_NOTHING;
 484 }
 485
 486 int vo_config(struct vo *vo, uint32_t width, uint32_t height,
 487                      uint32_t d_width, uint32_t d_height, uint32_t flags,
 488                      uint32_t format)
 489 {
 490     struct MPOpts *opts = vo->opts;
 491     panscan_init(vo);
 492     aspect_save_orig(vo, width, height);
 493     aspect_save_prescale(vo, d_width, d_height);
 494
 495     if (vo_control(vo, VOCTRL_UPDATE_SCREENINFO, NULL) == VO_TRUE) {
 496         aspect(vo, &d_width, &d_height, A_NOZOOM);
 497         vo->dx = (int)(opts->vo_screenwidth - d_width) / 2;
 498         vo->dy = (int)(opts->vo_screenheight - d_height) / 2;
 499         geometry(&vo->dx, &vo->dy, &d_width, &d_height,
 500                  opts->vo_screenwidth, opts->vo_screenheight);
 501         geometry_xy_changed |= xinerama_screen >= 0;
 502         vo->dx += xinerama_x;
 503         vo->dy += xinerama_y;
 504         vo->dwidth = d_width;
 505         vo->dheight = d_height;
 506     }
 507
 508     int ret = vo->driver->config(vo, width, height, d_width, d_height, flags,
 509                                  format);
 510     vo->config_ok = (ret == 0);
 511     vo->config_count += vo->config_ok;
 512     if (vo->registered_fd == -1 && vo->event_fd != -1 && vo->config_ok) {
 513         mp_input_add_key_fd(vo->input_ctx, vo->event_fd, 1, event_fd_callback,
 514                             NULL, vo);
 515         vo->registered_fd = vo->event_fd;
 516     }
 517     vo->frame_loaded = false;
 518     vo->waiting_mpi = NULL;
 519     vo->redrawing = false;
 520     vo->hasframe = false;
 521     return ret;
 522 }
 523
 524 /**
 525  * \brief lookup an integer in a table, table must have 0 as the last key
 526  * \param key key to search for
 527  * \result translation corresponding to key or "to" value of last mapping
 528  *         if not found.
 529  */
 530 int lookup_keymap_table(const struct mp_keymap *map, int key) {
 531   while (map->from && map->from != key) map++;
 532   return map->to;
 533 }
 534
 535 /**
 536  * \brief helper function for the kind of panscan-scaling that needs a source
 537  *        and destination rectangle like Direct3D and VDPAU
 538  */
 539 static void src_dst_split_scaling(int src_size, int dst_size, int scaled_src_size,
 540                                   int *src_start, int *src_end, int *dst_start, int *dst_end) {
 541   if (scaled_src_size > dst_size) {
 542     int border = src_size * (scaled_src_size - dst_size) / scaled_src_size;
 543     // round to a multiple of 2, this is at least needed for vo_direct3d and ATI cards
 544     border = (border / 2 + 1) & ~1;
 545     *src_start = border;
 546     *src_end   = src_size - border;
 547     *dst_start = 0;
 548     *dst_end   = dst_size;
 549   } else {
 550     *src_start = 0;
 551     *src_end   = src_size;
 552     *dst_start = (dst_size - scaled_src_size) / 2;
 553     *dst_end   = *dst_start + scaled_src_size;
 554   }
 555 }
 556
 557 /**
 558  * Calculate the appropriate source and destination rectangle to
 559  * get a correctly scaled picture, including pan-scan.
 560  * Can be extended to take future cropping support into account.
 561  *
 562  * \param crop specifies the cropping border size in the left, right, top and bottom members, may be NULL
 563  * \param borders the border values as e.g. EOSD (ASS) and properly placed DVD highlight support requires,
 564  *                may be NULL and only left and top are currently valid.
 565  */
 566 void calc_src_dst_rects(struct vo *vo, int src_width, int src_height,
 567                         struct vo_rect *src, struct vo_rect *dst,
 568                         struct vo_rect *borders, const struct vo_rect *crop)
 569 {
 570   static const struct vo_rect no_crop = {0, 0, 0, 0, 0, 0};
 571   int scaled_width  = 0;
 572   int scaled_height = 0;
 573   if (!crop) crop = &no_crop;
 574   src_width  -= crop->left + crop->right;
 575   src_height -= crop->top  + crop->bottom;
 576   if (src_width  < 2) src_width  = 2;
 577   if (src_height < 2) src_height = 2;
 578   dst->left = 0; dst->right  = vo->dwidth;
 579   dst->top  = 0; dst->bottom = vo->dheight;
 580   src->left = 0; src->right  = src_width;
 581   src->top  = 0; src->bottom = src_height;
 582   if (borders) {
 583     borders->left = 0; borders->top = 0;
 584   }
 585   if (aspect_scaling()) {
 586     aspect(vo, &scaled_width, &scaled_height, A_WINZOOM);
 587     panscan_calc_windowed(vo);
 588     scaled_width  += vo->panscan_x;
 589     scaled_height += vo->panscan_y;
 590     if (borders) {
 591       borders->left = (vo->dwidth  - scaled_width ) / 2;
 592       borders->top  = (vo->dheight - scaled_height) / 2;
 593     }
 594     src_dst_split_scaling(src_width, vo->dwidth, scaled_width,
 595                           &src->left, &src->right, &dst->left, &dst->right);
 596     src_dst_split_scaling(src_height, vo->dheight, scaled_height,
 597                           &src->top, &src->bottom, &dst->top, &dst->bottom);
 598   }
 599   src->left += crop->left; src->right  += crop->left;
 600   src->top  += crop->top;  src->bottom += crop->top;
 601   src->width  = src->right  - src->left;
 602   src->height = src->bottom - src->top;
 603   dst->width  = dst->right  - dst->left;
 604   dst->height = dst->bottom - dst->top;
 605 }
 606
 607 // Return the window title the VO should set. Always returns a null terminated
 608 // string. The string is valid until frontend code is invoked again. Copy it if
 609 // you need to keep the string for an extended period of time.
 610 const char *vo_get_window_title(struct vo *vo)
 611 {
 612     if (vo->opts->vo_wintitle) {
 613         return vo->opts->vo_wintitle;
 614     } else {
 615         return "mplayer2";
 616     }
 617 }
 618
 619 /**
 620  * Generates a mouse movement message if those are enable and sends it
 621  * to the "main" MPlayer.
 622  *
 623  * \param posx new x position of mouse
 624  * \param posy new y position of mouse
 625  */
 626 void vo_mouse_movement(struct vo *vo, int posx, int posy)
 627 {
 628   char cmd_str[40];
 629   if (!enable_mouse_movements)
 630     return;
 631   snprintf(cmd_str, sizeof(cmd_str), "set_mouse_pos %i %i", posx, posy);
 632   mp_input_queue_cmd(vo->input_ctx, mp_input_parse_cmd(cmd_str));
 633 }
 634
 635 #if defined(CONFIG_FBDEV) || defined(CONFIG_VESA)
 636 /* Borrowed from vo_fbdev.c
 637 Monitor ranges related functions*/
 638
 639 char *monitor_hfreq_str = NULL;
 640 char *monitor_vfreq_str = NULL;
 641 char *monitor_dotclock_str = NULL;
 642
 643 float range_max(range_t *r)
 644 {
 645 float max = 0;
 646
 647         for (/* NOTHING */; (r->min != -1 && r->max != -1); r++)
 648                 if (max < r->max) max = r->max;
 649         return max;
 650 }
 651
 652
 653 int in_range(range_t *r, float f)
 654 {
 655         for (/* NOTHING */; (r->min != -1 && r->max != -1); r++)
 656                 if (f >= r->min && f <= r->max)
 657                         return 1;
 658         return 0;
 659 }
 660
 661 range_t *str2range(char *s)
 662 {
 663         float tmp_min, tmp_max;
 664         char *endptr = s;       // to start the loop
 665         range_t *r = NULL;
 666         int i;
 667
 668         if (!s)
 669                 return NULL;
 670         for (i = 0; *endptr; i++) {
 671                 if (*s == ',')
 672                         goto out_err;
 673                 if (!(r = realloc(r, sizeof(*r) * (i + 2)))) {
 674                         mp_msg(MSGT_GLOBAL, MSGL_WARN,"can't realloc 'r'\n");
 675                         return NULL;
 676                 }
 677                 tmp_min = strtod(s, &endptr);
 678                 if (*endptr == 'k' || *endptr == 'K') {
 679                         tmp_min *= 1000.0;
 680                         endptr++;
 681                 } else if (*endptr == 'm' || *endptr == 'M') {
 682                         tmp_min *= 1000000.0;
 683                         endptr++;
 684                 }
 685                 if (*endptr == '-') {
 686                         tmp_max = strtod(endptr + 1, &endptr);
 687                         if (*endptr == 'k' || *endptr == 'K') {
 688                                 tmp_max *= 1000.0;
 689                                 endptr++;
 690                         } else if (*endptr == 'm' || *endptr == 'M') {
 691                                 tmp_max *= 1000000.0;
 692                                 endptr++;
 693                         }
 694                         if (*endptr != ',' && *endptr)
 695                                 goto out_err;
 696                 } else if (*endptr == ',' || !*endptr) {
 697                         tmp_max = tmp_min;
 698                 } else
 699                         goto out_err;
 700                 r[i].min = tmp_min;
 701                 r[i].max = tmp_max;
 702                 if (r[i].min < 0 || r[i].max < 0)
 703                         goto out_err;
 704                 s = endptr + 1;
 705         }
 706         r[i].min = r[i].max = -1;
 707         return r;
 708 out_err:
 709         free(r);
 710         return NULL;
 711 }
 712
 713 /* Borrowed from vo_fbdev.c END */
 714 #endif