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