stream/stream_dvdnav.c

   1 /*
   2  * This file is part of MPlayer.
   3  *
   4  * MPlayer is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * MPlayer is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License along
  15  * with MPlayer; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdlib.h>
  22 #include <stdio.h>
  23 #include <unistd.h>
  24 #include <string.h>
  25 #include <errno.h>
  26 #include "options.h"
  27 #include "mp_msg.h"
  28 #include "osdep/timer.h"
  29 #include "input/input.h"
  30 #include "stream.h"
  31 #include "libmpdemux/demuxer.h"
  32 #include <dvdnav/dvdnav.h>
  33 #include "stream_dvdnav.h"
  34 #include "libvo/video_out.h"
  35 #include "libavutil/common.h"
  36 #include "spudec.h"
  37 #include "m_option.h"
  38 #include "m_struct.h"
  39 #include "stream_dvd_common.h"
  40
  41 /* state flags */
  42 typedef enum {
  43   NAV_FLAG_EOF                  = 1 << 0,  /* end of stream has been reached */
  44   NAV_FLAG_WAIT                 = 1 << 1,  /* wait event */
  45   NAV_FLAG_WAIT_SKIP            = 1 << 2,  /* wait skip disable */
  46   NAV_FLAG_CELL_CHANGE          = 1 << 3,  /* cell change event */
  47   NAV_FLAG_WAIT_READ_AUTO       = 1 << 4,  /* wait read auto mode */
  48   NAV_FLAG_WAIT_READ            = 1 << 5,  /* suspend read from stream */
  49   NAV_FLAG_VTS_DOMAIN           = 1 << 6,  /* vts domain */
  50   NAV_FLAG_SPU_SET              = 1 << 7,  /* spu_clut is valid */
  51   NAV_FLAG_STREAM_CHANGE        = 1 << 8,  /* title, chapter, audio or SPU */
  52   NAV_FLAG_AUDIO_CHANGE         = 1 << 9,  /* audio stream change event */
  53   NAV_FLAG_SPU_CHANGE           = 1 << 10, /* spu stream change event */
  54 } dvdnav_state_t;
  55
  56 typedef struct {
  57   dvdnav_t *       dvdnav;              /* handle to libdvdnav stuff */
  58   char *           filename;            /* path */
  59   unsigned int     duration;            /* in milliseconds */
  60   int              mousex, mousey;
  61   int              title;
  62   unsigned int     spu_clut[16];
  63   dvdnav_highlight_event_t hlev;
  64   int              still_length;        /* still frame duration */
  65   unsigned int     state;
  66 } dvdnav_priv_t;
  67
  68 static struct stream_priv_s {
  69   int track;
  70   char* device;
  71 } stream_priv_dflts = {
  72   0,
  73   NULL
  74 };
  75
  76 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  77 /// URL definition
  78 static const m_option_t stream_opts_fields[] = {
  79   {"filename",  ST_OFF(device), CONF_TYPE_STRING, 0, 0, 0, NULL },
  80   {"hostname",  ST_OFF(track),  CONF_TYPE_INT, M_OPT_RANGE, 1, 99, NULL},
  81   { NULL, NULL, 0, 0, 0, 0,  NULL }
  82 };
  83 static const struct m_struct_st stream_opts = {
  84   "dvd",
  85   sizeof(struct stream_priv_s),
  86   &stream_priv_dflts,
  87   stream_opts_fields
  88 };
  89
  90 static int seek(stream_t *s, off_t newpos);
  91 static void show_audio_subs_languages(dvdnav_t *nav);
  92
  93 static dvdnav_priv_t * new_dvdnav_stream(char * filename) {
  94   const char * title_str;
  95   dvdnav_priv_t *priv;
  96
  97   if (!filename)
  98     return NULL;
  99
 100   if (!(priv=calloc(1,sizeof(dvdnav_priv_t))))
 101     return NULL;
 102
 103   if (!(priv->filename=strdup(filename))) {
 104     free(priv);
 105     return NULL;
 106   }
 107
 108   dvd_set_speed(priv->filename, dvd_speed);
 109
 110   if(dvdnav_open(&(priv->dvdnav),priv->filename)!=DVDNAV_STATUS_OK)
 111   {
 112     free(priv->filename);
 113     free(priv);
 114     return NULL;
 115   }
 116
 117   if (!priv->dvdnav) {
 118     free(priv);
 119     return NULL;
 120   }
 121
 122   if(1) //from vlc: if not used dvdnav from cvs will fail
 123   {
 124     int len, event;
 125     char buf[2048];
 126
 127     dvdnav_get_next_block(priv->dvdnav,buf,&event,&len);
 128     dvdnav_sector_search(priv->dvdnav, 0, SEEK_SET);
 129   }
 130
 131   /* turn off dvdnav caching */
 132   dvdnav_set_readahead_flag(priv->dvdnav, 0);
 133   if(dvdnav_set_PGC_positioning_flag(priv->dvdnav, 1) != DVDNAV_STATUS_OK)
 134     mp_msg(MSGT_OPEN,MSGL_ERR,"stream_dvdnav, failed to set PGC positioning\n");
 135   /* report the title?! */
 136   if (dvdnav_get_title_string(priv->dvdnav,&title_str)==DVDNAV_STATUS_OK) {
 137     mp_msg(MSGT_IDENTIFY, MSGL_INFO,"Title: '%s'\n",title_str);
 138   }
 139
 140   //dvdnav_event_clear(priv);
 141
 142   return priv;
 143 }
 144
 145 static void dvdnav_get_highlight (dvdnav_priv_t *priv, int display_mode) {
 146   pci_t *pnavpci = NULL;
 147   dvdnav_highlight_event_t *hlev = &(priv->hlev);
 148   int btnum;
 149
 150   if (!priv || !priv->dvdnav)
 151     return;
 152
 153   pnavpci = dvdnav_get_current_nav_pci (priv->dvdnav);
 154   if (!pnavpci)
 155     return;
 156
 157   dvdnav_get_current_highlight (priv->dvdnav, &(hlev->buttonN));
 158   hlev->display = display_mode; /* show */
 159
 160   if (hlev->buttonN > 0 && pnavpci->hli.hl_gi.btn_ns > 0 && hlev->display) {
 161     for (btnum = 0; btnum < pnavpci->hli.hl_gi.btn_ns; btnum++) {
 162       btni_t *btni = &(pnavpci->hli.btnit[btnum]);
 163
 164       if (hlev->buttonN == btnum + 1) {
 165         hlev->sx = FFMIN (btni->x_start, btni->x_end);
 166         hlev->ex = FFMAX (btni->x_start, btni->x_end);
 167         hlev->sy = FFMIN (btni->y_start, btni->y_end);
 168         hlev->ey = FFMAX (btni->y_start, btni->y_end);
 169
 170         hlev->palette = (btni->btn_coln == 0) ? 0 :
 171           pnavpci->hli.btn_colit.btn_coli[btni->btn_coln - 1][0];
 172         break;
 173       }
 174     }
 175   } else { /* hide button or no button */
 176     hlev->sx = hlev->ex = 0;
 177     hlev->sy = hlev->ey = 0;
 178     hlev->palette = hlev->buttonN = 0;
 179   }
 180 }
 181
 182 static inline int dvdnav_get_duration (int length) {
 183   return (length == 255) ? 0 : length * 1000;
 184 }
 185
 186 static int dvdnav_stream_read(dvdnav_priv_t * priv, unsigned char *buf, int *len) {
 187   int event = DVDNAV_NOP;
 188
 189   *len=-1;
 190   if (dvdnav_get_next_block(priv->dvdnav,buf,&event,len)!=DVDNAV_STATUS_OK) {
 191     mp_msg(MSGT_OPEN,MSGL_V, "Error getting next block from DVD %d (%s)\n",event, dvdnav_err_to_string(priv->dvdnav) );
 192     *len=-1;
 193   }
 194   else if (event!=DVDNAV_BLOCK_OK) {
 195     // need to handle certain events internally (like skipping stills)
 196     switch (event) {
 197       case DVDNAV_NAV_PACKET:
 198         return event;
 199       case DVDNAV_STILL_FRAME: {
 200         dvdnav_still_event_t *still_event = (dvdnav_still_event_t *) buf;
 201         priv->still_length = still_event->length;
 202         /* set still frame duration */
 203         priv->duration = dvdnav_get_duration (priv->still_length);
 204         if (priv->still_length <= 1) {
 205           pci_t *pnavpci = dvdnav_get_current_nav_pci (priv->dvdnav);
 206           priv->duration = mp_dvdtimetomsec (&pnavpci->pci_gi.e_eltm);
 207         }
 208         break;
 209       }
 210       case DVDNAV_HIGHLIGHT: {
 211         dvdnav_get_highlight (priv, 1);
 212         break;
 213       }
 214       case DVDNAV_CELL_CHANGE: {
 215         dvdnav_cell_change_event_t *ev =  (dvdnav_cell_change_event_t*)buf;
 216         uint32_t nextstill;
 217
 218         priv->state &= ~NAV_FLAG_WAIT_SKIP;
 219         priv->state |= NAV_FLAG_STREAM_CHANGE;
 220         if(ev->pgc_length)
 221           priv->duration = ev->pgc_length/90;
 222
 223         if (dvdnav_is_domain_vts(priv->dvdnav)) {
 224           mp_msg(MSGT_IDENTIFY, MSGL_INFO, "DVDNAV_TITLE_IS_MOVIE\n");
 225           priv->state &= ~NAV_FLAG_VTS_DOMAIN;
 226         } else {
 227           mp_msg(MSGT_IDENTIFY, MSGL_INFO, "DVDNAV_TITLE_IS_MENU\n");
 228           priv->state |= NAV_FLAG_VTS_DOMAIN;
 229         }
 230
 231         nextstill = dvdnav_get_next_still_flag (priv->dvdnav);
 232         if (nextstill) {
 233           priv->duration = dvdnav_get_duration (nextstill);
 234           priv->still_length = nextstill;
 235           if (priv->still_length <= 1) {
 236             pci_t *pnavpci = dvdnav_get_current_nav_pci (priv->dvdnav);
 237             priv->duration = mp_dvdtimetomsec (&pnavpci->pci_gi.e_eltm);
 238           }
 239         }
 240
 241         break;
 242       }
 243       case DVDNAV_SPU_CLUT_CHANGE: {
 244         memcpy(priv->spu_clut, buf, 16*sizeof(unsigned int));
 245         priv->state |= NAV_FLAG_SPU_SET;
 246         break;
 247       }
 248       case DVDNAV_WAIT: {
 249         if ((priv->state & NAV_FLAG_WAIT_SKIP) &&
 250             !(priv->state & NAV_FLAG_WAIT))
 251           dvdnav_wait_skip (priv->dvdnav);
 252         else
 253           priv->state |= NAV_FLAG_WAIT;
 254         break;
 255       }
 256       case DVDNAV_VTS_CHANGE: {
 257         priv->state &= ~NAV_FLAG_WAIT_SKIP;
 258         priv->state |= NAV_FLAG_STREAM_CHANGE;
 259         break;
 260       }
 261       case DVDNAV_SPU_STREAM_CHANGE: {
 262         priv->state |= NAV_FLAG_STREAM_CHANGE;
 263         break;
 264       }
 265     }
 266
 267     *len=0;
 268   }
 269   return event;
 270 }
 271
 272 static void update_title_len(stream_t *stream) {
 273   dvdnav_priv_t *priv = stream->priv;
 274   dvdnav_status_t status;
 275   uint32_t pos = 0, len = 0;
 276
 277   status = dvdnav_get_position(priv->dvdnav, &pos, &len);
 278   if(status == DVDNAV_STATUS_OK && len) {
 279     stream->end_pos = (off_t) len * 2048;
 280     stream->seek = seek;
 281   } else {
 282     stream->seek = NULL;
 283     stream->end_pos = 0;
 284   }
 285 }
 286
 287
 288 static int seek(stream_t *s, off_t newpos) {
 289   uint32_t sector = 0;
 290   dvdnav_priv_t *priv = s->priv;
 291
 292   if(s->end_pos && newpos > s->end_pos)
 293      newpos = s->end_pos;
 294   sector = newpos / 2048ULL;
 295   if(dvdnav_sector_search(priv->dvdnav, (uint64_t) sector, SEEK_SET) != DVDNAV_STATUS_OK)
 296     goto fail;
 297
 298   s->pos = newpos;
 299
 300   return 1;
 301
 302 fail:
 303   mp_msg(MSGT_STREAM,MSGL_INFO,"dvdnav_stream, seeking to %"PRIu64" failed: %s\n", newpos, dvdnav_err_to_string(priv->dvdnav));
 304
 305   return 1;
 306 }
 307
 308 static void stream_dvdnav_close(stream_t *s) {
 309   dvdnav_priv_t *priv = s->priv;
 310   dvdnav_close(priv->dvdnav);
 311   priv->dvdnav = NULL;
 312   dvd_set_speed(priv->filename, -1);
 313   free(priv);
 314 }
 315
 316
 317 static int fill_buffer(stream_t *s, char *but, int len)
 318 {
 319     int event;
 320
 321     dvdnav_priv_t* priv=s->priv;
 322     if (priv->state & NAV_FLAG_WAIT_READ) /* read is suspended */
 323       return -1;
 324     len=0;
 325     if(!s->end_pos)
 326       update_title_len(s);
 327     while(!len) /* grab all event until DVDNAV_BLOCK_OK (len=2048), DVDNAV_STOP or DVDNAV_STILL_FRAME */
 328     {
 329       event=dvdnav_stream_read(priv, s->buffer, &len);
 330       if(event==-1 || len==-1)
 331       {
 332         mp_msg(MSGT_CPLAYER,MSGL_ERR, "DVDNAV stream read error!\n");
 333         return 0;
 334       }
 335       if (event != DVDNAV_BLOCK_OK)
 336         dvdnav_get_highlight (priv, 1);
 337       switch (event) {
 338         case DVDNAV_STOP: {
 339           priv->state |= NAV_FLAG_EOF;
 340           return len;
 341         }
 342         case DVDNAV_BLOCK_OK:
 343         case DVDNAV_NAV_PACKET:
 344         case DVDNAV_STILL_FRAME:
 345           return len;
 346         case DVDNAV_WAIT: {
 347           if (priv->state & NAV_FLAG_WAIT)
 348             return len;
 349           break;
 350         }
 351         case DVDNAV_VTS_CHANGE: {
 352           int tit = 0, part = 0;
 353           dvdnav_vts_change_event_t *vts_event = (dvdnav_vts_change_event_t *)s->buffer;
 354           mp_msg(MSGT_CPLAYER,MSGL_INFO, "DVDNAV, switched to title: %d\r\n", vts_event->new_vtsN);
 355           priv->state |= NAV_FLAG_CELL_CHANGE;
 356           priv->state |= NAV_FLAG_AUDIO_CHANGE;
 357           priv->state |= NAV_FLAG_SPU_CHANGE;
 358           priv->state &= ~NAV_FLAG_WAIT_SKIP;
 359           priv->state &= ~NAV_FLAG_WAIT;
 360           s->end_pos = 0;
 361           update_title_len(s);
 362           show_audio_subs_languages(priv->dvdnav);
 363           if (priv->state & NAV_FLAG_WAIT_READ_AUTO)
 364             priv->state |= NAV_FLAG_WAIT_READ;
 365           if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) == DVDNAV_STATUS_OK) {
 366             mp_msg(MSGT_CPLAYER,MSGL_V, "\r\nDVDNAV, NEW TITLE %d\r\n", tit);
 367             dvdnav_get_highlight (priv, 0);
 368             if(priv->title > 0 && tit != priv->title) {
 369               priv->state |= NAV_FLAG_EOF;
 370               return 0;
 371             }
 372           }
 373           break;
 374         }
 375         case DVDNAV_CELL_CHANGE: {
 376           priv->state |= NAV_FLAG_CELL_CHANGE;
 377           priv->state |= NAV_FLAG_AUDIO_CHANGE;
 378           priv->state |= NAV_FLAG_SPU_CHANGE;
 379           priv->state &= ~NAV_FLAG_WAIT_SKIP;
 380           priv->state &= ~NAV_FLAG_WAIT;
 381           if (priv->state & NAV_FLAG_WAIT_READ_AUTO)
 382             priv->state |= NAV_FLAG_WAIT_READ;
 383           if(priv->title > 0 && s->opts->chapterrange[1] > 0) {
 384             int tit=0, part=0;
 385             if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) == DVDNAV_STATUS_OK && part > s->opts->chapterrange[1]) {
 386               priv->state |= NAV_FLAG_EOF;
 387               return 0;
 388             }
 389           }
 390           dvdnav_get_highlight (priv, 1);
 391         }
 392         break;
 393         case DVDNAV_AUDIO_STREAM_CHANGE:
 394           priv->state |= NAV_FLAG_AUDIO_CHANGE;
 395         break;
 396         case DVDNAV_SPU_STREAM_CHANGE:
 397           priv->state |= NAV_FLAG_SPU_CHANGE;
 398         break;
 399       }
 400   }
 401   mp_msg(MSGT_STREAM,MSGL_DBG2,"DVDNAV fill_buffer len: %d\n",len);
 402   return len;
 403 }
 404
 405 static int control(stream_t *stream, int cmd, void* arg) {
 406   dvdnav_priv_t* priv=stream->priv;
 407   int tit, part;
 408
 409   switch(cmd)
 410   {
 411     case STREAM_CTRL_SEEK_TO_CHAPTER:
 412     {
 413       int chap = *((unsigned int *)arg)+1;
 414
 415       if(chap < 1 || dvdnav_current_title_info(priv->dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
 416         break;
 417       if(dvdnav_part_play(priv->dvdnav, tit, chap) != DVDNAV_STATUS_OK)
 418         break;
 419       return 1;
 420     }
 421     case STREAM_CTRL_GET_NUM_CHAPTERS:
 422     {
 423       if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
 424         break;
 425       if(dvdnav_get_number_of_parts(priv->dvdnav, tit, &part) != DVDNAV_STATUS_OK)
 426         break;
 427       if(!part)
 428         break;
 429       *((unsigned int *)arg) = part;
 430       return 1;
 431     }
 432     case STREAM_CTRL_GET_CURRENT_CHAPTER:
 433     {
 434       if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
 435         break;
 436       *((unsigned int *)arg) = part - 1;
 437       return 1;
 438     }
 439     case STREAM_CTRL_GET_TIME_LENGTH:
 440     {
 441       if(priv->duration || priv->still_length)
 442       {
 443         *((double *)arg) = (double)priv->duration / 1000.0;
 444         return 1;
 445       }
 446       break;
 447     }
 448     case STREAM_CTRL_GET_ASPECT_RATIO:
 449     {
 450       uint8_t ar = dvdnav_get_video_aspect(priv->dvdnav);
 451       *((double *)arg) = !ar ? 4.0/3.0 : 16.0/9.0;
 452       return 1;
 453     }
 454     case STREAM_CTRL_GET_CURRENT_TIME:
 455     {
 456       double tm;
 457       tm = dvdnav_get_current_time(priv->dvdnav)/90000.0f;
 458       if(tm != -1)
 459       {
 460         *((double *)arg) = tm;
 461         return 1;
 462       }
 463       break;
 464     }
 465     case STREAM_CTRL_SEEK_TO_TIME:
 466     {
 467       uint64_t tm = (uint64_t) (*((double*)arg) * 90000);
 468       if(dvdnav_time_search(priv->dvdnav, tm) == DVDNAV_STATUS_OK)
 469         return 1;
 470       break;
 471     }
 472     case STREAM_CTRL_GET_NUM_ANGLES:
 473     {
 474         uint32_t curr, angles;
 475         if(dvdnav_get_angle_info(priv->dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
 476           break;
 477         *((int *)arg) = angles;
 478         return 1;
 479     }
 480     case STREAM_CTRL_GET_ANGLE:
 481     {
 482         uint32_t curr, angles;
 483         if(dvdnav_get_angle_info(priv->dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
 484           break;
 485         *((int *)arg) = curr;
 486         return 1;
 487     }
 488     case STREAM_CTRL_SET_ANGLE:
 489     {
 490         uint32_t curr, angles;
 491         int new_angle = *((int *)arg);
 492         if(dvdnav_get_angle_info(priv->dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
 493           break;
 494         if(new_angle>angles || new_angle<1)
 495             break;
 496         if(dvdnav_angle_change(priv->dvdnav, new_angle) != DVDNAV_STATUS_OK)
 497         return 1;
 498     }
 499   }
 500
 501   return STREAM_UNSUPPORTED;
 502 }
 503
 504 static void identify_chapters(dvdnav_t *nav, uint32_t title)
 505 {
 506   uint64_t *parts=NULL, duration=0;
 507   uint32_t n, i, t;
 508   n = dvdnav_describe_title_chapters(nav, title, &parts, &duration);
 509   if(parts) {
 510     t = duration / 90;
 511     mp_msg(MSGT_IDENTIFY, MSGL_V, "ID_DVD_TITLE_%d_LENGTH=%d.%03d\n", title, t / 1000, t % 1000);
 512     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "TITLE %u, CHAPTERS: ", title);
 513     for(i=0; i<n; i++) {
 514       t = parts[i] /  90000;
 515       mp_msg(MSGT_IDENTIFY, MSGL_INFO, "%02d:%02d:%02d,", t/3600, (t/60)%60, t%60);
 516     }
 517     free(parts);
 518     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "\n");
 519   }
 520 }
 521
 522 static void identify(dvdnav_priv_t *priv, struct stream_priv_s *p)
 523 {
 524   uint32_t titles=0, i;
 525   if(p->track <= 0) {
 526     dvdnav_get_number_of_titles(priv->dvdnav, &titles);
 527     for(i=0; i<titles; i++)
 528       identify_chapters(priv->dvdnav, i);
 529   }
 530   else
 531     identify_chapters(priv->dvdnav, p->track);
 532 }
 533
 534 static void show_audio_subs_languages(dvdnav_t *nav)
 535 {
 536   uint8_t lg;
 537   uint16_t i, lang, format, id, channels;
 538   int base[7] = {128, 0, 0, 0, 160, 136, 0};
 539   for(i=0; i<8; i++)
 540   {
 541     char tmp[] = "unknown";
 542     lg = dvdnav_get_audio_logical_stream(nav, i);
 543     if(lg == 0xff) continue;
 544     channels = dvdnav_audio_stream_channels(nav, lg);
 545     if(channels == 0xFFFF)
 546       channels = 2; //unknown
 547     else
 548       channels--;
 549     lang = dvdnav_audio_stream_to_lang(nav, lg);
 550     if(lang != 0xFFFF)
 551     {
 552       tmp[0] = lang >> 8;
 553       tmp[1] = lang & 0xFF;
 554       tmp[2] = 0;
 555     }
 556     format = dvdnav_audio_stream_format(nav, lg);
 557     if(format == 0xFFFF || format > 6)
 558       format = 1; //unknown
 559     id = i + base[format];
 560     mp_tmsg(MSGT_OPEN,MSGL_STATUS,"audio stream: %d format: %s (%s) language: %s aid: %d.\n", i,
 561            dvd_audio_stream_types[format], dvd_audio_stream_channels[channels], tmp, id);
 562     if (lang != 0xFFFF && lang && tmp[0])
 563         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_AID_%d_LANG=%s\n", id, tmp);
 564   }
 565
 566   for(i=0; i<32; i++)
 567   {
 568     char tmp[] = "unknown";
 569     lg = dvdnav_get_spu_logical_stream(nav, i);
 570     if(lg == 0xff) continue;
 571     lang = dvdnav_spu_stream_to_lang(nav, i);
 572     if(lang != 0xFFFF)
 573     {
 574       tmp[0] = lang >> 8;
 575       tmp[1] = lang & 0xFF;
 576       tmp[2] = 0;
 577     }
 578     mp_msg(MSGT_OPEN,MSGL_STATUS,"subtitle ( sid ): %d language: %s\n", lg, tmp);
 579     if (lang != 0xFFFF && lang && tmp[0])
 580         mp_msg(MSGT_IDENTIFY, MSGL_INFO, "ID_SID_%d_LANG=%s\n", lg, tmp);
 581   }
 582 }
 583
 584 static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
 585   struct stream_priv_s* p = (struct stream_priv_s*)opts;
 586   char *filename;
 587   dvdnav_priv_t *priv;
 588
 589   if(p->device) filename = p->device;
 590   else if(dvd_device) filename= dvd_device;
 591   else filename = DEFAULT_DVD_DEVICE;
 592   if(!(priv=new_dvdnav_stream(filename))) {
 593     mp_tmsg(MSGT_OPEN,MSGL_ERR,"Couldn't open DVD device: %s (%s)\n",filename, strerror(errno));
 594     return STREAM_UNSUPPORTED;
 595   }
 596
 597   if(p->track > 0) {
 598     priv->title = p->track;
 599     if(dvdnav_title_play(priv->dvdnav, p->track) != DVDNAV_STATUS_OK) {
 600       mp_msg(MSGT_OPEN,MSGL_FATAL,"dvdnav_stream, couldn't select title %d, error '%s'\n", p->track, dvdnav_err_to_string(priv->dvdnav));
 601       return STREAM_UNSUPPORTED;
 602     }
 603   } else if (p->track == 0) {
 604     if(dvdnav_menu_call(priv->dvdnav, DVD_MENU_Root) != DVDNAV_STATUS_OK)
 605       dvdnav_menu_call(priv->dvdnav, DVD_MENU_Title);
 606   }
 607   if(mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
 608     identify(priv, p);
 609   if(p->track > 0)
 610     show_audio_subs_languages(priv->dvdnav);
 611   if(dvd_angle > 1)
 612     dvdnav_angle_change(priv->dvdnav, dvd_angle);
 613
 614   stream->sector_size = 2048;
 615   stream->flags = STREAM_READ | MP_STREAM_SEEK;
 616   stream->fill_buffer = fill_buffer;
 617   stream->seek = seek;
 618   stream->control = control;
 619   stream->close = stream_dvdnav_close;
 620   stream->type = STREAMTYPE_DVDNAV;
 621   stream->priv=(void*)priv;
 622   *file_format = DEMUXER_TYPE_MPEG_PS;
 623
 624   update_title_len(stream);
 625   if(!stream->pos && p->track > 0)
 626     mp_msg(MSGT_OPEN,MSGL_ERR, "INIT ERROR: couldn't get init pos %s\r\n", dvdnav_err_to_string(priv->dvdnav));
 627
 628   mp_msg(MSGT_OPEN,MSGL_INFO, "Remember to disable MPlayer's cache when playing dvdnav:// streams (adding -nocache to your command line)\r\n");
 629
 630   return STREAM_OK;
 631 }
 632
 633
 634 void mp_dvdnav_handle_input(stream_t *stream, int cmd, int *button) {
 635   dvdnav_priv_t * priv = stream->priv;
 636   dvdnav_t *nav = priv->dvdnav;
 637   dvdnav_status_t status=DVDNAV_STATUS_ERR;
 638   pci_t *pci = dvdnav_get_current_nav_pci(nav);
 639
 640   if(cmd != MP_CMD_DVDNAV_SELECT && !pci)
 641     return;
 642
 643   switch(cmd) {
 644     case MP_CMD_DVDNAV_UP:
 645       status = dvdnav_upper_button_select(nav, pci);
 646       break;
 647     case MP_CMD_DVDNAV_DOWN:
 648       status = dvdnav_lower_button_select(nav, pci);
 649       break;
 650     case MP_CMD_DVDNAV_LEFT:
 651       status = dvdnav_left_button_select(nav, pci);
 652       break;
 653     case MP_CMD_DVDNAV_RIGHT:
 654       status = dvdnav_right_button_select(nav, pci);
 655       break;
 656     case MP_CMD_DVDNAV_MENU:
 657       status = dvdnav_menu_call(nav,DVD_MENU_Root);
 658       break;
 659     case MP_CMD_DVDNAV_PREVMENU: {
 660       int title=0, part=0;
 661
 662       dvdnav_current_title_info(nav, &title, &part);
 663       if(title) {
 664         if((status=dvdnav_menu_call(nav, DVD_MENU_Part)) == DVDNAV_STATUS_OK)
 665           break;
 666       }
 667       if((status=dvdnav_menu_call(nav, DVD_MENU_Title)) == DVDNAV_STATUS_OK)
 668         break;
 669       status=dvdnav_menu_call(nav, DVD_MENU_Root);
 670       }
 671       break;
 672     case MP_CMD_DVDNAV_SELECT:
 673       status = dvdnav_button_activate(nav, pci);
 674       break;
 675     case MP_CMD_DVDNAV_MOUSECLICK:
 676       /*
 677         this is a workaround: in theory the simple dvdnav_lower_button_select()+dvdnav_button_activate()
 678         should be enough (and generally it is), but there are cases when the calls to dvdnav_lower_button_select()
 679         and friends fail! Hence we have to call dvdnav_mouse_activate(priv->mousex, priv->mousey) with
 680         the coodinates saved by mp_dvdnav_update_mouse_pos().
 681         This last call always works well
 682       */
 683       status = dvdnav_mouse_activate(nav, pci, priv->mousex, priv->mousey);
 684       break;
 685     default:
 686       mp_msg(MSGT_CPLAYER, MSGL_V, "Unknown DVDNAV cmd %d\n", cmd);
 687       break;
 688   }
 689
 690   if(status == DVDNAV_STATUS_OK)
 691     dvdnav_get_current_highlight(nav, button);
 692 }
 693
 694 void mp_dvdnav_update_mouse_pos(stream_t *stream, int32_t x, int32_t y, int* button) {
 695   dvdnav_priv_t * priv = stream->priv;
 696   dvdnav_t *nav = priv->dvdnav;
 697   dvdnav_status_t status;
 698   pci_t *pci = dvdnav_get_current_nav_pci(nav);
 699
 700   if(!pci) return;
 701
 702   status = dvdnav_mouse_select(nav, pci, x, y);
 703   if(status == DVDNAV_STATUS_OK) dvdnav_get_current_highlight(nav, button);
 704   else *button = -1;
 705   priv->mousex = x;
 706   priv->mousey = y;
 707 }
 708
 709 static int mp_dvdnav_get_aid_from_format (stream_t *stream, int index, uint8_t lg) {
 710   dvdnav_priv_t * priv = stream->priv;
 711   uint8_t format;
 712
 713   format = dvdnav_audio_stream_format(priv->dvdnav, lg);
 714   switch(format) {
 715   case DVDNAV_FORMAT_AC3:
 716     return index + 128;
 717   case DVDNAV_FORMAT_DTS:
 718     return index + 136;
 719   case DVDNAV_FORMAT_LPCM:
 720     return index + 160;
 721   case DVDNAV_FORMAT_MPEGAUDIO:
 722     return index;
 723   default:
 724     return -1;
 725   }
 726
 727   return -1;
 728 }
 729
 730 /**
 731  * \brief mp_dvdnav_aid_from_lang() returns the audio id corresponding to the language code 'lang'
 732  * \param stream: - stream pointer
 733  * \param lang: 2-characters language code[s], eventually separated by spaces of commas
 734  * \return -1 on error, current subtitle id if successful
 735  */
 736 int mp_dvdnav_aid_from_lang(stream_t *stream, const unsigned char *language) {
 737   dvdnav_priv_t * priv = stream->priv;
 738   int k;
 739   uint8_t lg;
 740   uint16_t lang, lcode;
 741
 742   while(language && strlen(language)>=2) {
 743     lcode = (language[0] << 8) | (language[1]);
 744     for(k=0; k<32; k++) {
 745       lg = dvdnav_get_audio_logical_stream(priv->dvdnav, k);
 746       if(lg == 0xff) continue;
 747       lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
 748       if(lang != 0xFFFF && lang == lcode)
 749         return mp_dvdnav_get_aid_from_format (stream, k, lg);
 750     }
 751     language += 2;
 752     while(language[0]==',' || language[0]==' ') ++language;
 753   }
 754   return -1;
 755 }
 756
 757 /**
 758  * \brief mp_dvdnav_lang_from_aid() assigns to buf the language corresponding to audio id 'aid'
 759  * \param stream: - stream pointer
 760  * \param sid: physical subtitle id
 761  * \param buf: buffer to contain the 2-chars language string
 762  * \return 0 on error, 1 if successful
 763  */
 764 int mp_dvdnav_lang_from_aid(stream_t *stream, int aid, unsigned char *buf) {
 765   uint8_t lg;
 766   uint16_t lang;
 767   dvdnav_priv_t * priv = stream->priv;
 768
 769   if(aid < 0)
 770     return 0;
 771   lg = dvdnav_get_audio_logical_stream(priv->dvdnav, aid & 0x7);
 772   if(lg == 0xff) return 0;
 773   lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
 774   if(lang == 0xffff) return 0;
 775   buf[0] = lang >> 8;
 776   buf[1] = lang & 0xFF;
 777   buf[2] = 0;
 778   return 1;
 779 }
 780
 781
 782 /**
 783  * \brief mp_dvdnav_sid_from_lang() returns the subtitle id corresponding to the language code 'lang'
 784  * \param stream: - stream pointer
 785  * \param lang: 2-characters language code[s], eventually separated by spaces of commas
 786  * \return -1 on error, current subtitle id if successful
 787  */
 788 int mp_dvdnav_sid_from_lang(stream_t *stream, const unsigned char *language) {
 789   dvdnav_priv_t * priv = stream->priv;
 790   uint8_t lg, k;
 791   uint16_t lang, lcode;
 792
 793   while(language && strlen(language)>=2) {
 794     lcode = (language[0] << 8) | (language[1]);
 795     for(k=0; k<32; k++) {
 796       lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
 797       if(lg == 0xff) continue;
 798       lang = dvdnav_spu_stream_to_lang(priv->dvdnav, k);
 799       if(lang != 0xFFFF && lang == lcode) {
 800         return lg;
 801       }
 802     }
 803     language += 2;
 804     while(language[0]==',' || language[0]==' ') ++language;
 805   }
 806   return -1;
 807 }
 808
 809 /**
 810  * \brief mp_dvdnav_lang_from_sid() assigns to buf the language corresponding to subtitle id 'sid'
 811  * \param stream: - stream pointer
 812  * \param sid: physical subtitle id
 813  * \param buf: buffer to contain the 2-chars language string
 814  * \return 0 on error, 1 if successful
 815  */
 816 int mp_dvdnav_lang_from_sid(stream_t *stream, int sid, unsigned char *buf) {
 817     uint8_t k;
 818     uint16_t lang;
 819     dvdnav_priv_t *priv = stream->priv;
 820     if(sid < 0) return 0;
 821     for (k=0; k<32; k++)
 822         if (dvdnav_get_spu_logical_stream(priv->dvdnav, k) == sid)
 823             break;
 824     if (k == 32)
 825         return 0;
 826     lang = dvdnav_spu_stream_to_lang(priv->dvdnav, k);
 827     if(lang == 0xffff) return 0;
 828     buf[0] = lang >> 8;
 829     buf[1] = lang & 0xFF;
 830     buf[2] = 0;
 831     return 1;
 832 }
 833
 834 /**
 835  * \brief mp_dvdnav_number_of_subs() returns the count of available subtitles
 836  * \param stream: - stream pointer
 837  * \return 0 on error, something meaningful otherwise
 838  */
 839 int mp_dvdnav_number_of_subs(stream_t *stream) {
 840   dvdnav_priv_t * priv = stream->priv;
 841   uint8_t lg, k, n=0;
 842
 843   if (priv->state & NAV_FLAG_VTS_DOMAIN) return 0;
 844   for(k=0; k<32; k++) {
 845     lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
 846     if(lg == 0xff) continue;
 847     if(lg >= n) n = lg + 1;
 848   }
 849   return n;
 850 }
 851
 852 /**
 853  * \brief mp_dvdnav_get_spu_clut() returns the spu clut
 854  * \param stream: - stream pointer
 855  * \return spu clut pointer
 856  */
 857 unsigned int *mp_dvdnav_get_spu_clut(stream_t *stream) {
 858     dvdnav_priv_t *priv = stream->priv;
 859     return (priv->state & NAV_FLAG_SPU_SET) ? priv->spu_clut : NULL;
 860 }
 861
 862 /**
 863  * \brief mp_dvdnav_get_highlight() get dvdnav highlight struct
 864  * \param stream: - stream pointer
 865  * \param hl    : - highlight struct pointer
 866  */
 867 void mp_dvdnav_get_highlight (stream_t *stream, nav_highlight_t *hl) {
 868   dvdnav_priv_t *priv = stream->priv;
 869   dvdnav_highlight_event_t hlev = priv->hlev;
 870
 871   hl->sx = hlev.sx;
 872   hl->sy = hlev.sy;
 873   hl->ex = hlev.ex;
 874   hl->ey = hlev.ey;
 875   hl->palette = hlev.palette;
 876 }
 877
 878 void mp_dvdnav_switch_title (stream_t *stream, int title) {
 879   dvdnav_priv_t *priv = stream->priv;
 880   uint32_t titles;
 881
 882   dvdnav_get_number_of_titles (priv->dvdnav, &titles);
 883   if (title > 0 && title <= titles)
 884     dvdnav_title_play (priv->dvdnav, title);
 885 }
 886
 887 /**
 888  * \brief Check if end of stream has been reached
 889  * \param stream: - stream pointer
 890  * \return 1 on really eof
 891  */
 892 int mp_dvdnav_is_eof (stream_t *stream) {
 893   return ((dvdnav_priv_t *) stream->priv)->state & NAV_FLAG_EOF;
 894 }
 895
 896 /**
 897  * \brief Skip still frame
 898  * \param stream: - stream pointer
 899  * \return 0 on success
 900  */
 901 int mp_dvdnav_skip_still (stream_t *stream) {
 902   dvdnav_priv_t *priv = stream->priv;
 903   if (priv->still_length == 0xff)
 904     return 1;
 905   dvdnav_still_skip(priv->dvdnav);
 906   return 0;
 907 }
 908
 909 /**
 910  * \brief Skip wait event
 911  * \param stream: - stream pointer
 912  * \return 0 on success
 913  */
 914 int mp_dvdnav_skip_wait (stream_t *stream) {
 915   dvdnav_priv_t *priv = stream->priv;
 916   if (!(priv->state & NAV_FLAG_WAIT))
 917     return 1;
 918   priv->state &= ~NAV_FLAG_WAIT;
 919   dvdnav_wait_skip(priv->dvdnav);
 920   return 0;
 921 }
 922
 923 /**
 924  * \brief Set wait mode
 925  * \param stream  : - stream pointer
 926  * \param mode    : - if true, then suspend block read
 927  * \param automode: - if true, then VTS or cell change set wait mode
 928  */
 929 void mp_dvdnav_read_wait (stream_t *stream, int mode, int automode) {
 930   dvdnav_priv_t *priv = stream->priv;
 931   if (mode == 0)
 932     priv->state &= ~NAV_FLAG_WAIT_READ;
 933   if (mode > 0)
 934     priv->state |= NAV_FLAG_WAIT_READ;
 935   if (automode == 0)
 936     priv->state &= ~NAV_FLAG_WAIT_READ_AUTO;
 937   if (automode > 0)
 938     priv->state |= NAV_FLAG_WAIT_READ_AUTO;
 939 }
 940
 941 /**
 942  * \brief Check if cell has changed
 943  * \param stream: - stream pointer
 944  * \param clear : - if true, then clear cell change flag
 945  * \return 1 if cell has changed
 946  */
 947 int mp_dvdnav_cell_has_changed (stream_t *stream, int clear) {
 948   dvdnav_priv_t *priv = stream->priv;
 949   if (!(priv->state & NAV_FLAG_CELL_CHANGE))
 950     return 0;
 951   if (clear) {
 952     priv->state &= ~NAV_FLAG_CELL_CHANGE;
 953     priv->state |= NAV_FLAG_STREAM_CHANGE;
 954   }
 955   return 1;
 956 }
 957
 958 /**
 959  * \brief Check if audio has changed
 960  * \param stream: - stream pointer
 961  * \param clear : - if true, then clear audio change flag
 962  * \return 1 if audio has changed
 963  */
 964 int mp_dvdnav_audio_has_changed (stream_t *stream, int clear) {
 965   dvdnav_priv_t *priv = stream->priv;
 966
 967   if (!(priv->state & NAV_FLAG_AUDIO_CHANGE))
 968     return 0;
 969
 970   if (clear)
 971     priv->state &= ~NAV_FLAG_AUDIO_CHANGE;
 972
 973   return 1;
 974 }
 975
 976 /**
 977  * \brief Check if SPU has changed
 978  * \param stream: - stream pointer
 979  * \param clear : - if true, then clear spu change flag
 980  * \return 1 if spu has changed
 981  */
 982 int mp_dvdnav_spu_has_changed (stream_t *stream, int clear) {
 983   dvdnav_priv_t *priv =  stream->priv;
 984
 985   if (!(priv->state & NAV_FLAG_SPU_CHANGE))
 986     return 0;
 987
 988   if (clear)
 989     priv->state &= ~NAV_FLAG_SPU_CHANGE;
 990
 991   return 1;
 992 }
 993
 994 /* Notify if something has changed in stream
 995  * Can be related to title, chapter, audio or SPU
 996  */
 997 int mp_dvdnav_stream_has_changed (stream_t *stream) {
 998   dvdnav_priv_t *priv = stream->priv;
 999
1000   if (!(priv->state & NAV_FLAG_STREAM_CHANGE))
1001     return 0;
1002
1003   priv->state &= ~NAV_FLAG_STREAM_CHANGE;
1004   return 1;
1005 }
1006
1007 const stream_info_t stream_info_dvdnav = {
1008   "DVDNAV stream",
1009   "null",
1010   "",
1011   "",
1012   open_s,
1013   { "dvdnav", NULL },
1014   &stream_opts,
1015   1 // Urls are an option string
1016 };