stream/stream_dvdnav.c

   1 #include "config.h"
   2
   3 #include <stdlib.h>
   4 #include <stdio.h>
   5 #include <unistd.h>
   6 #include <string.h>
   7 #include <errno.h>
   8 #include "mp_msg.h"
   9 #include "osdep/timer.h"
  10 #include "input/input.h"
  11 #include "stream.h"
  12 #include "libmpdemux/demuxer.h"
  13 #include <dvdnav/dvdnav.h>
  14 #include "stream_dvdnav.h"
  15 #include "libvo/video_out.h"
  16 #include "libavutil/common.h"
  17 #include "spudec.h"
  18 #include "m_option.h"
  19 #include "m_struct.h"
  20 #include "help_mp.h"
  21 #include "stream_dvd_common.h"
  22
  23 /* state flags */
  24 typedef enum {
  25   NAV_FLAG_EOF                  = 1 << 0,  /* end of stream has been reached */
  26   NAV_FLAG_WAIT                 = 1 << 1,  /* wait event */
  27   NAV_FLAG_WAIT_SKIP            = 1 << 2,  /* wait skip disable */
  28   NAV_FLAG_CELL_CHANGED         = 1 << 3,  /* cell change event */
  29   NAV_FLAG_WAIT_READ_AUTO       = 1 << 4,  /* wait read auto mode */
  30   NAV_FLAG_WAIT_READ            = 1 << 5,  /* suspend read from stream */
  31   NAV_FLAG_VTS_DOMAIN           = 1 << 6,  /* vts domain */
  32   NAV_FLAG_SPU_SET              = 1 << 7,  /* spu_clut is valid */
  33   NAV_FLAG_STREAM_CHANGE        = 1 << 8,  /* title, chapter, audio or SPU */
  34 } dvdnav_state_t;
  35
  36 typedef struct {
  37   dvdnav_t *       dvdnav;              /* handle to libdvdnav stuff */
  38   char *           filename;            /* path */
  39   unsigned int     duration;            /* in milliseconds */
  40   int              mousex, mousey;
  41   int              title;
  42   unsigned int     spu_clut[16];
  43   dvdnav_highlight_event_t hlev;
  44   int              still_length;        /* still frame duration */
  45   unsigned int     state;
  46 } dvdnav_priv_t;
  47
  48 extern char *dvd_device;
  49 extern char *audio_lang, *dvdsub_lang;
  50 extern char *dvd_audio_stream_channels[6], *dvd_audio_stream_types[8];
  51
  52 static struct stream_priv_s {
  53   int track;
  54   char* device;
  55 } stream_priv_dflts = {
  56   0,
  57   NULL
  58 };
  59
  60 #define ST_OFF(f) M_ST_OFF(struct stream_priv_s,f)
  61 /// URL definition
  62 static const m_option_t stream_opts_fields[] = {
  63   {"filename",  ST_OFF(device), CONF_TYPE_STRING, 0, 0, 0, NULL },
  64   {"hostname",  ST_OFF(track), CONF_TYPE_INT, 0, 0, 0, NULL},
  65   { NULL, NULL, 0, 0, 0, 0,  NULL }
  66 };
  67 static const struct m_struct_st stream_opts = {
  68   "dvd",
  69   sizeof(struct stream_priv_s),
  70   &stream_priv_dflts,
  71   stream_opts_fields
  72 };
  73
  74 static int seek(stream_t *s, off_t newpos);
  75
  76 static dvdnav_priv_t * new_dvdnav_stream(char * filename) {
  77   const char * title_str;
  78   dvdnav_priv_t *priv;
  79
  80   if (!filename)
  81     return NULL;
  82
  83   if (!(priv=calloc(1,sizeof(dvdnav_priv_t))))
  84     return NULL;
  85
  86   if (!(priv->filename=strdup(filename))) {
  87     free(priv);
  88     return NULL;
  89   }
  90
  91   if(dvdnav_open(&(priv->dvdnav),priv->filename)!=DVDNAV_STATUS_OK)
  92   {
  93     free(priv->filename);
  94     free(priv);
  95     return NULL;
  96   }
  97
  98   if (!priv->dvdnav) {
  99     free(priv);
 100     return NULL;
 101   }
 102
 103   if(1) //from vlc: if not used dvdnav from cvs will fail
 104   {
 105     int len, event;
 106     char buf[2048];
 107
 108     dvdnav_get_next_block(priv->dvdnav,buf,&event,&len);
 109     dvdnav_sector_search(priv->dvdnav, 0, SEEK_SET);
 110   }
 111
 112   /* turn off dvdnav caching */
 113   dvdnav_set_readahead_flag(priv->dvdnav, 0);
 114   if(dvdnav_set_PGC_positioning_flag(priv->dvdnav, 1) != DVDNAV_STATUS_OK)
 115     mp_msg(MSGT_OPEN,MSGL_ERR,"stream_dvdnav, failed to set PGC positioning\n");
 116 #if 1
 117   /* report the title?! */
 118   if (dvdnav_get_title_string(priv->dvdnav,&title_str)==DVDNAV_STATUS_OK) {
 119     mp_msg(MSGT_IDENTIFY, MSGL_INFO,"Title: '%s'\n",title_str);
 120   }
 121 #endif
 122
 123   //dvdnav_event_clear(priv);
 124
 125   return priv;
 126 }
 127
 128 static void dvdnav_get_highlight (dvdnav_priv_t *priv, int display_mode) {
 129   pci_t *pnavpci = NULL;
 130   dvdnav_highlight_event_t *hlev = &(priv->hlev);
 131   int btnum;
 132
 133   if (!priv || !priv->dvdnav)
 134     return;
 135
 136   pnavpci = dvdnav_get_current_nav_pci (priv->dvdnav);
 137   if (!pnavpci)
 138     return;
 139
 140   dvdnav_get_current_highlight (priv->dvdnav, &(hlev->buttonN));
 141   hlev->display = display_mode; /* show */
 142
 143   if (hlev->buttonN > 0 && pnavpci->hli.hl_gi.btn_ns > 0 && hlev->display) {
 144     for (btnum = 0; btnum < pnavpci->hli.hl_gi.btn_ns; btnum++) {
 145       btni_t *btni = &(pnavpci->hli.btnit[btnum]);
 146
 147       if (hlev->buttonN == btnum + 1) {
 148         hlev->sx = FFMIN (btni->x_start, btni->x_end);
 149         hlev->ex = FFMAX (btni->x_start, btni->x_end);
 150         hlev->sy = FFMIN (btni->y_start, btni->y_end);
 151         hlev->ey = FFMAX (btni->y_start, btni->y_end);
 152
 153         hlev->palette = (btni->btn_coln == 0) ? 0 :
 154           pnavpci->hli.btn_colit.btn_coli[btni->btn_coln - 1][0];
 155         break;
 156       }
 157     }
 158   } else { /* hide button or no button */
 159     hlev->sx = hlev->ex = 0;
 160     hlev->sy = hlev->ey = 0;
 161     hlev->palette = hlev->buttonN = 0;
 162   }
 163 }
 164
 165 static inline int dvdnav_get_duration (int length) {
 166   return (length == 255) ? 0 : length * 1000;
 167 }
 168
 169 static int dvdnav_stream_read(dvdnav_priv_t * priv, unsigned char *buf, int *len) {
 170   int event = DVDNAV_NOP;
 171
 172   *len=-1;
 173   if (dvdnav_get_next_block(priv->dvdnav,buf,&event,len)!=DVDNAV_STATUS_OK) {
 174     mp_msg(MSGT_OPEN,MSGL_V, "Error getting next block from DVD %d (%s)\n",event, dvdnav_err_to_string(priv->dvdnav) );
 175     *len=-1;
 176   }
 177   else if (event!=DVDNAV_BLOCK_OK) {
 178     // need to handle certain events internally (like skipping stills)
 179     switch (event) {
 180       case DVDNAV_NAV_PACKET:
 181         return event;
 182       case DVDNAV_STILL_FRAME: {
 183         dvdnav_still_event_t *still_event = (dvdnav_still_event_t *) buf;
 184         priv->still_length = still_event->length;
 185         /* set still frame duration */
 186         priv->duration = dvdnav_get_duration (priv->still_length);
 187         if (priv->still_length <= 1) {
 188           pci_t *pnavpci = dvdnav_get_current_nav_pci (priv->dvdnav);
 189           priv->duration = mp_dvdtimetomsec (&pnavpci->pci_gi.e_eltm);
 190         }
 191         break;
 192       }
 193       case DVDNAV_HIGHLIGHT: {
 194         dvdnav_get_highlight (priv, 1);
 195         break;
 196       }
 197       case DVDNAV_CELL_CHANGE: {
 198         dvdnav_cell_change_event_t *ev =  (dvdnav_cell_change_event_t*)buf;
 199         uint32_t nextstill;
 200
 201         priv->state &= ~NAV_FLAG_WAIT_SKIP;
 202         priv->state |= NAV_FLAG_STREAM_CHANGE;
 203         if(ev->pgc_length)
 204           priv->duration = ev->pgc_length/90;
 205
 206         if (dvdnav_is_domain_vts(priv->dvdnav))
 207           priv->state &= ~NAV_FLAG_VTS_DOMAIN;
 208         else
 209           priv->state |= NAV_FLAG_VTS_DOMAIN;
 210
 211         nextstill = dvdnav_get_next_still_flag (priv->dvdnav);
 212         if (nextstill) {
 213           priv->duration = dvdnav_get_duration (nextstill);
 214           priv->still_length = nextstill;
 215           if (priv->still_length <= 1) {
 216             pci_t *pnavpci = dvdnav_get_current_nav_pci (priv->dvdnav);
 217             priv->duration = mp_dvdtimetomsec (&pnavpci->pci_gi.e_eltm);
 218           }
 219         }
 220
 221         break;
 222       }
 223       case DVDNAV_SPU_CLUT_CHANGE: {
 224         memcpy(priv->spu_clut, buf, 16*sizeof(unsigned int));
 225         priv->state |= NAV_FLAG_SPU_SET;
 226         break;
 227       }
 228       case DVDNAV_WAIT: {
 229         if ((priv->state & NAV_FLAG_WAIT_SKIP) &&
 230             !(priv->state & NAV_FLAG_WAIT))
 231           dvdnav_wait_skip (priv->dvdnav);
 232         else
 233           priv->state |= NAV_FLAG_WAIT;
 234         break;
 235       }
 236       case DVDNAV_VTS_CHANGE: {
 237         priv->state &= ~NAV_FLAG_WAIT_SKIP;
 238         priv->state |= NAV_FLAG_STREAM_CHANGE;
 239         break;
 240       }
 241       case DVDNAV_SPU_STREAM_CHANGE: {
 242         priv->state |= NAV_FLAG_STREAM_CHANGE;
 243         break;
 244       }
 245     }
 246
 247     *len=0;
 248   }
 249   return event;
 250 }
 251
 252 static void update_title_len(stream_t *stream) {
 253   dvdnav_priv_t *priv = stream->priv;
 254   dvdnav_status_t status;
 255   uint32_t pos = 0, len = 0;
 256
 257   status = dvdnav_get_position(priv->dvdnav, &pos, &len);
 258   if(status == DVDNAV_STATUS_OK && len) {
 259     stream->end_pos = (off_t) len * 2048;
 260     stream->seek = seek;
 261   } else {
 262     stream->seek = NULL;
 263     stream->end_pos = 0;
 264   }
 265 }
 266
 267
 268 static int seek(stream_t *s, off_t newpos) {
 269   uint32_t sector = 0;
 270   dvdnav_priv_t *priv = s->priv;
 271
 272   if(s->end_pos && newpos > s->end_pos)
 273      newpos = s->end_pos;
 274   sector = newpos / 2048ULL;
 275   if(dvdnav_sector_search(priv->dvdnav, (uint64_t) sector, SEEK_SET) != DVDNAV_STATUS_OK)
 276     goto fail;
 277
 278   s->pos = newpos;
 279
 280   return 1;
 281
 282 fail:
 283   mp_msg(MSGT_STREAM,MSGL_INFO,"dvdnav_stream, seeking to %"PRIu64" failed: %s\n", newpos, dvdnav_err_to_string(priv->dvdnav));
 284
 285   return 1;
 286 }
 287
 288 static void stream_dvdnav_close(stream_t *s) {
 289   dvdnav_priv_t *priv = s->priv;
 290   dvdnav_close(priv->dvdnav);
 291   priv->dvdnav = NULL;
 292   free(priv);
 293 }
 294
 295
 296 static int fill_buffer(stream_t *s, char *but, int len)
 297 {
 298     int event;
 299
 300     dvdnav_priv_t* priv=s->priv;
 301     if (priv->state & NAV_FLAG_WAIT_READ) /* read is suspended */
 302       return -1;
 303     len=0;
 304     if(!s->end_pos)
 305       update_title_len(s);
 306     while(!len) /* grab all event until DVDNAV_BLOCK_OK (len=2048), DVDNAV_STOP or DVDNAV_STILL_FRAME */
 307     {
 308       event=dvdnav_stream_read(priv, s->buffer, &len);
 309       if(event==-1 || len==-1)
 310       {
 311         mp_msg(MSGT_CPLAYER,MSGL_ERR, "DVDNAV stream read error!\n");
 312         return 0;
 313       }
 314       if (event != DVDNAV_BLOCK_OK)
 315         dvdnav_get_highlight (priv, 1);
 316       switch (event) {
 317         case DVDNAV_STOP: {
 318           priv->state |= NAV_FLAG_EOF;
 319           return len;
 320         }
 321         case DVDNAV_BLOCK_OK:
 322         case DVDNAV_NAV_PACKET:
 323         case DVDNAV_STILL_FRAME:
 324           return len;
 325         case DVDNAV_WAIT: {
 326           if (priv->state & NAV_FLAG_WAIT)
 327             return len;
 328           break;
 329         }
 330         case DVDNAV_VTS_CHANGE: {
 331           int tit = 0, part = 0;
 332           dvdnav_vts_change_event_t *vts_event = (dvdnav_vts_change_event_t *)s->buffer;
 333           mp_msg(MSGT_CPLAYER,MSGL_INFO, "DVDNAV, switched to title: %d\r\n", vts_event->new_vtsN);
 334           priv->state |= NAV_FLAG_CELL_CHANGED;
 335           priv->state &= ~NAV_FLAG_WAIT_SKIP;
 336           priv->state &= ~NAV_FLAG_WAIT;
 337           s->end_pos = 0;
 338           update_title_len(s);
 339           if (priv->state & NAV_FLAG_WAIT_READ_AUTO)
 340             priv->state |= NAV_FLAG_WAIT_READ;
 341           if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) == DVDNAV_STATUS_OK) {
 342             mp_msg(MSGT_CPLAYER,MSGL_V, "\r\nDVDNAV, NEW TITLE %d\r\n", tit);
 343             dvdnav_get_highlight (priv, 0);
 344             if(priv->title > 0 && tit != priv->title)
 345               return 0;
 346           }
 347           break;
 348         }
 349         case DVDNAV_CELL_CHANGE: {
 350           priv->state |= NAV_FLAG_CELL_CHANGED;
 351           priv->state &= ~NAV_FLAG_WAIT_SKIP;
 352           priv->state &= ~NAV_FLAG_WAIT;
 353           if (priv->state & NAV_FLAG_WAIT_READ_AUTO)
 354             priv->state |= NAV_FLAG_WAIT_READ;
 355           if(priv->title > 0 && dvd_last_chapter > 0) {
 356             int tit=0, part=0;
 357             if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) == DVDNAV_STATUS_OK && part > dvd_last_chapter)
 358               return 0;
 359           }
 360           dvdnav_get_highlight (priv, 1);
 361         }
 362         break;
 363       }
 364   }
 365   mp_msg(MSGT_STREAM,MSGL_DBG2,"DVDNAV fill_buffer len: %d\n",len);
 366   return len;
 367 }
 368
 369 static int control(stream_t *stream, int cmd, void* arg) {
 370   dvdnav_priv_t* priv=stream->priv;
 371   int tit, part;
 372
 373   switch(cmd)
 374   {
 375     case STREAM_CTRL_SEEK_TO_CHAPTER:
 376     {
 377       int chap = *((unsigned int *)arg)+1;
 378
 379       if(chap < 1 || dvdnav_current_title_info(priv->dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
 380         break;
 381       if(dvdnav_part_play(priv->dvdnav, tit, chap) != DVDNAV_STATUS_OK)
 382         break;
 383       return 1;
 384     }
 385     case STREAM_CTRL_GET_NUM_CHAPTERS:
 386     {
 387       if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
 388         break;
 389       if(dvdnav_get_number_of_parts(priv->dvdnav, tit, &part) != DVDNAV_STATUS_OK)
 390         break;
 391       if(!part)
 392         break;
 393       *((unsigned int *)arg) = part;
 394       return 1;
 395     }
 396     case STREAM_CTRL_GET_CURRENT_CHAPTER:
 397     {
 398       if(dvdnav_current_title_info(priv->dvdnav, &tit, &part) != DVDNAV_STATUS_OK)
 399         break;
 400       *((unsigned int *)arg) = part - 1;
 401       return 1;
 402     }
 403     case STREAM_CTRL_GET_TIME_LENGTH:
 404     {
 405       if(priv->duration || priv->still_length)
 406       {
 407         *((double *)arg) = (double)priv->duration / 1000.0;
 408         return 1;
 409       }
 410       break;
 411     }
 412     case STREAM_CTRL_GET_ASPECT_RATIO:
 413     {
 414       uint8_t ar = dvdnav_get_video_aspect(priv->dvdnav);
 415       *((double *)arg) = !ar ? 4.0/3.0 : 16.0/9.0;
 416       return 1;
 417     }
 418     case STREAM_CTRL_GET_CURRENT_TIME:
 419     {
 420       double tm;
 421       tm = dvdnav_get_current_time(priv->dvdnav)/90000.0f;
 422       if(tm != -1)
 423       {
 424         *((double *)arg) = tm;
 425         return 1;
 426       }
 427       break;
 428     }
 429     case STREAM_CTRL_SEEK_TO_TIME:
 430     {
 431       uint64_t tm = (uint64_t) (*((double*)arg) * 90000);
 432       if(dvdnav_time_search(priv->dvdnav, tm) == DVDNAV_STATUS_OK)
 433         return 1;
 434       break;
 435     }
 436     case STREAM_CTRL_GET_NUM_ANGLES:
 437     {
 438         uint32_t curr, angles;
 439         if(dvdnav_get_angle_info(priv->dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
 440           break;
 441         *((int *)arg) = angles;
 442         return 1;
 443     }
 444     case STREAM_CTRL_GET_ANGLE:
 445     {
 446         uint32_t curr, angles;
 447         if(dvdnav_get_angle_info(priv->dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
 448           break;
 449         *((int *)arg) = curr;
 450         return 1;
 451     }
 452     case STREAM_CTRL_SET_ANGLE:
 453     {
 454         uint32_t curr, angles;
 455         int new_angle = *((int *)arg);
 456         if(dvdnav_get_angle_info(priv->dvdnav, &curr, &angles) != DVDNAV_STATUS_OK)
 457           break;
 458         if(new_angle>angles || new_angle<1)
 459             break;
 460         if(dvdnav_angle_change(priv->dvdnav, new_angle) != DVDNAV_STATUS_OK)
 461         return 1;
 462     }
 463   }
 464
 465   return STREAM_UNSUPPORTED;
 466 }
 467
 468 static void identify_chapters(dvdnav_t *nav, uint32_t title)
 469 {
 470   uint64_t *parts=NULL, duration=0;
 471   uint32_t n, i, t;
 472   n = dvdnav_describe_title_chapters(nav, title, &parts, &duration);
 473   if(parts) {
 474     t = duration / 90;
 475     mp_msg(MSGT_IDENTIFY, MSGL_V, "ID_DVD_TITLE_%d_LENGTH=%d.%03d\n", title, t / 1000, t % 1000);
 476     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "TITLE %u, CHAPTERS: ", title);
 477     for(i=0; i<n; i++) {
 478       t = parts[i] /  90000;
 479       mp_msg(MSGT_IDENTIFY, MSGL_INFO, "%02d:%02d:%02d,", t/3600, (t/60)%60, t%60);
 480     }
 481     free(parts);
 482     mp_msg(MSGT_IDENTIFY, MSGL_INFO, "\n");
 483   }
 484 }
 485
 486 static void identify(dvdnav_priv_t *priv, struct stream_priv_s *p)
 487 {
 488   uint32_t titles=0, i;
 489   if(p->track <= 0) {
 490     dvdnav_get_number_of_titles(priv->dvdnav, &titles);
 491     for(i=0; i<titles; i++)
 492       identify_chapters(priv->dvdnav, i);
 493   }
 494   else
 495     identify_chapters(priv->dvdnav, p->track);
 496 }
 497
 498 static void show_audio_subs_languages(dvdnav_t *nav)
 499 {
 500   uint8_t lg;
 501   uint16_t i, lang, format, id, channels;
 502   int base[7] = {128, 0, 0, 0, 160, 136, 0};
 503   char tmp[3];
 504   for(i=0; i<8; i++)
 505   {
 506     lg = dvdnav_get_audio_logical_stream(nav, i);
 507     if(lg == 0xff) continue;
 508     channels = dvdnav_audio_stream_channels(nav, lg);
 509     if(channels == 0xFFFF)
 510       channels = 2; //unknown
 511     else
 512       channels--;
 513     lang = dvdnav_audio_stream_to_lang(nav, lg);
 514     if(lang == 0xFFFF)
 515       tmp[0] = tmp[1] = '?';
 516     else
 517     {
 518       tmp[0] = lang >> 8;
 519       tmp[1] = lang & 0xFF;
 520     }
 521     tmp[2] = 0;
 522     format = dvdnav_audio_stream_format(nav, lg);
 523     if(format == 0xFFFF || format > 6)
 524       format = 1; //unknown
 525     id = i + base[format];
 526     mp_msg(MSGT_OPEN,MSGL_STATUS,MSGTR_DVDaudioStreamInfo, i,
 527       dvd_audio_stream_types[format], dvd_audio_stream_channels[channels], tmp, id);
 528   }
 529
 530   for(i=0; i<32; i++)
 531   {
 532     lg = dvdnav_get_spu_logical_stream(nav, i);
 533     if(lg == 0xff) continue;
 534     lang = dvdnav_spu_stream_to_lang(nav, lg);
 535     if(lang == 0xFFFF)
 536       tmp[0] = tmp[1] = '?';
 537     else
 538     {
 539       tmp[0] = lang >> 8;
 540       tmp[1] = lang & 0xFF;
 541     }
 542     tmp[2] = 0;
 543     mp_msg(MSGT_OPEN,MSGL_STATUS,MSGTR_DVDsubtitleLanguage, i+0x20, tmp);
 544   }
 545 }
 546
 547 static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
 548   struct stream_priv_s* p = (struct stream_priv_s*)opts;
 549   char *filename;
 550   dvdnav_priv_t *priv;
 551
 552   if(p->device) filename = p->device;
 553   else if(dvd_device) filename= dvd_device;
 554   else filename = DEFAULT_DVD_DEVICE;
 555   if(!(priv=new_dvdnav_stream(filename))) {
 556     mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_CantOpenDVD,filename, strerror(errno));
 557     return STREAM_UNSUPPORTED;
 558   }
 559
 560   if(p->track > 0) {
 561     priv->title = p->track;
 562     if(dvdnav_title_play(priv->dvdnav, p->track) != DVDNAV_STATUS_OK) {
 563       mp_msg(MSGT_OPEN,MSGL_FATAL,"dvdnav_stream, couldn't select title %d, error '%s'\n", p->track, dvdnav_err_to_string(priv->dvdnav));
 564       return STREAM_UNSUPPORTED;
 565     }
 566   } else if (p->track == 0) {
 567     if(dvdnav_menu_call(priv->dvdnav, DVD_MENU_Root) != DVDNAV_STATUS_OK)
 568       dvdnav_menu_call(priv->dvdnav, DVD_MENU_Title);
 569   }
 570   if(mp_msg_test(MSGT_IDENTIFY, MSGL_INFO))
 571     identify(priv, p);
 572   if(p->track > 0)
 573     show_audio_subs_languages(priv->dvdnav);
 574   if(dvd_angle > 1)
 575     dvdnav_angle_change(priv->dvdnav, dvd_angle);
 576
 577   stream->sector_size = 2048;
 578   stream->flags = STREAM_READ | STREAM_SEEK;
 579   stream->fill_buffer = fill_buffer;
 580   stream->seek = seek;
 581   stream->control = control;
 582   stream->close = stream_dvdnav_close;
 583   stream->type = STREAMTYPE_DVDNAV;
 584   stream->priv=(void*)priv;
 585   *file_format = DEMUXER_TYPE_MPEG_PS;
 586
 587   update_title_len(stream);
 588   if(!stream->pos && p->track > 0)
 589     mp_msg(MSGT_OPEN,MSGL_ERR, "INIT ERROR: couldn't get init pos %s\r\n", dvdnav_err_to_string(priv->dvdnav));
 590
 591   mp_msg(MSGT_OPEN,MSGL_INFO, "Remember to disable MPlayer's cache when playing dvdnav:// streams (adding -nocache to your command line)\r\n");
 592
 593   return STREAM_OK;
 594 }
 595
 596
 597 void mp_dvdnav_handle_input(stream_t *stream, int cmd, int *button) {
 598   dvdnav_priv_t * priv = stream->priv;
 599   dvdnav_t *nav = priv->dvdnav;
 600   dvdnav_status_t status=DVDNAV_STATUS_ERR;
 601   pci_t *pci = dvdnav_get_current_nav_pci(nav);
 602
 603   if(cmd != MP_CMD_DVDNAV_SELECT && !pci)
 604     return;
 605
 606   switch(cmd) {
 607     case MP_CMD_DVDNAV_UP:
 608       status = dvdnav_upper_button_select(nav, pci);
 609       break;
 610     case MP_CMD_DVDNAV_DOWN:
 611       status = dvdnav_lower_button_select(nav, pci);
 612       break;
 613     case MP_CMD_DVDNAV_LEFT:
 614       status = dvdnav_left_button_select(nav, pci);
 615       break;
 616     case MP_CMD_DVDNAV_RIGHT:
 617       status = dvdnav_right_button_select(nav, pci);
 618       break;
 619     case MP_CMD_DVDNAV_MENU:
 620       status = dvdnav_menu_call(nav,DVD_MENU_Root);
 621       break;
 622     case MP_CMD_DVDNAV_PREVMENU: {
 623       int title=0, part=0;
 624
 625       dvdnav_current_title_info(nav, &title, &part);
 626       if(title) {
 627         if((status=dvdnav_menu_call(nav, DVD_MENU_Part)) == DVDNAV_STATUS_OK)
 628           break;
 629       }
 630       if((status=dvdnav_menu_call(nav, DVD_MENU_Title)) == DVDNAV_STATUS_OK)
 631         break;
 632       status=dvdnav_menu_call(nav, DVD_MENU_Root);
 633       }
 634       break;
 635     case MP_CMD_DVDNAV_SELECT:
 636       status = dvdnav_button_activate(nav, pci);
 637       break;
 638     case MP_CMD_DVDNAV_MOUSECLICK:
 639       /*
 640         this is a workaround: in theory the simple dvdnav_lower_button_select()+dvdnav_button_activate()
 641         should be enough (and generally it is), but there are cases when the calls to dvdnav_lower_button_select()
 642         and friends fail! Hence we have to call dvdnav_mouse_activate(priv->mousex, priv->mousey) with
 643         the coodinates saved by mp_dvdnav_update_mouse_pos().
 644         This last call always works well
 645       */
 646       status = dvdnav_mouse_activate(nav, pci, priv->mousex, priv->mousey);
 647       break;
 648     default:
 649       mp_msg(MSGT_CPLAYER, MSGL_V, "Unknown DVDNAV cmd %d\n", cmd);
 650       break;
 651   }
 652
 653   if(status == DVDNAV_STATUS_OK)
 654     dvdnav_get_current_highlight(nav, button);
 655 }
 656
 657 void mp_dvdnav_update_mouse_pos(stream_t *stream, int32_t x, int32_t y, int* button) {
 658   dvdnav_priv_t * priv = stream->priv;
 659   dvdnav_t *nav = priv->dvdnav;
 660   dvdnav_status_t status;
 661   pci_t *pci = dvdnav_get_current_nav_pci(nav);
 662
 663   if(!pci) return;
 664
 665   status = dvdnav_mouse_select(nav, pci, x, y);
 666   if(status == DVDNAV_STATUS_OK) dvdnav_get_current_highlight(nav, button);
 667   else *button = -1;
 668   priv->mousex = x;
 669   priv->mousey = y;
 670 }
 671
 672 /**
 673  * \brief dvdnav_aid_from_lang() returns the audio id corresponding to the language code 'lang'
 674  * \param stream: - stream pointer
 675  * \param lang: 2-characters language code[s], eventually separated by spaces of commas
 676  * \return -1 on error, current subtitle id if successful
 677  */
 678 int dvdnav_aid_from_lang(stream_t *stream, unsigned char *language) {
 679   dvdnav_priv_t * priv = stream->priv;
 680   int k;
 681   uint8_t format, lg;
 682   uint16_t lang, lcode;;
 683
 684   while(language && strlen(language)>=2) {
 685     lcode = (language[0] << 8) | (language[1]);
 686     for(k=0; k<32; k++) {
 687       lg = dvdnav_get_audio_logical_stream(priv->dvdnav, k);
 688       if(lg == 0xff) continue;
 689       lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
 690       if(lang != 0xFFFF && lang == lcode) {
 691         format = dvdnav_audio_stream_format(priv->dvdnav, lg);
 692         switch(format) {
 693           case DVDNAV_FORMAT_AC3:
 694             return k+128;
 695           case DVDNAV_FORMAT_DTS:
 696             return k+136;
 697           case DVDNAV_FORMAT_LPCM:
 698             return k+160;
 699           case DVDNAV_FORMAT_MPEGAUDIO:
 700             return k;
 701           default:
 702             return -1;
 703         }
 704       }
 705     }
 706     language += 2;
 707     while(language[0]==',' || language[0]==' ') ++language;
 708   }
 709   return -1;
 710 }
 711
 712 /**
 713  * \brief dvdnav_lang_from_aid() assigns to buf the language corresponding to audio id 'aid'
 714  * \param stream: - stream pointer
 715  * \param sid: physical subtitle id
 716  * \param buf: buffer to contain the 2-chars language string
 717  * \return 0 on error, 1 if successful
 718  */
 719 int dvdnav_lang_from_aid(stream_t *stream, int aid, unsigned char *buf) {
 720   uint8_t lg;
 721   uint16_t lang;
 722   dvdnav_priv_t * priv = stream->priv;
 723
 724   if(aid < 0)
 725     return 0;
 726   lg = dvdnav_get_audio_logical_stream(priv->dvdnav, aid & 0x7);
 727   if(lg == 0xff) return 0;
 728   lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
 729   if(lang == 0xffff) return 0;
 730   buf[0] = lang >> 8;
 731   buf[1] = lang & 0xFF;
 732   buf[2] = 0;
 733   return 1;
 734 }
 735
 736
 737 /**
 738  * \brief dvdnav_sid_from_lang() returns the subtitle id corresponding to the language code 'lang'
 739  * \param stream: - stream pointer
 740  * \param lang: 2-characters language code[s], eventually separated by spaces of commas
 741  * \return -1 on error, current subtitle id if successful
 742  */
 743 int dvdnav_sid_from_lang(stream_t *stream, unsigned char *language) {
 744   dvdnav_priv_t * priv = stream->priv;
 745   uint8_t lg, k;
 746   uint16_t lang, lcode;
 747
 748   while(language && strlen(language)>=2) {
 749     lcode = (language[0] << 8) | (language[1]);
 750     for(k=0; k<32; k++) {
 751       lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
 752       if(lg == 0xff) continue;
 753       lang = dvdnav_spu_stream_to_lang(priv->dvdnav, lg);
 754       if(lang != 0xFFFF && lang == lcode) {
 755         return k;
 756       }
 757     }
 758     language += 2;
 759     while(language[0]==',' || language[0]==' ') ++language;
 760   }
 761   return -1;
 762 }
 763
 764 /**
 765  * \brief dvdnav_lang_from_sid() assigns to buf the language corresponding to subtitle id 'sid'
 766  * \param stream: - stream pointer
 767  * \param sid: physical subtitle id
 768  * \param buf: buffer to contain the 2-chars language string
 769  * \return 0 on error, 1 if successful
 770  */
 771 int dvdnav_lang_from_sid(stream_t *stream, int sid, unsigned char *buf) {
 772     uint8_t lg;
 773     uint16_t lang;
 774     dvdnav_priv_t *priv = stream->priv;
 775     if(sid < 0) return 0;
 776     lg = dvdnav_get_spu_logical_stream(priv->dvdnav, sid);
 777     lang = dvdnav_spu_stream_to_lang(priv->dvdnav, lg);
 778     if(lang == 0xffff) return 0;
 779     buf[0] = lang >> 8;
 780     buf[1] = lang & 0xFF;
 781     buf[2] = 0;
 782     return 1;
 783 }
 784
 785 /**
 786  * \brief dvdnav_number_of_subs() returns the count of available subtitles
 787  * \param stream: - stream pointer
 788  * \return 0 on error, something meaningful otherwise
 789  */
 790 int dvdnav_number_of_subs(stream_t *stream) {
 791   dvdnav_priv_t * priv = stream->priv;
 792   uint8_t lg, k, n=0;
 793
 794   if (priv->state & NAV_FLAG_VTS_DOMAIN) return 0;
 795   for(k=0; k<32; k++) {
 796     lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
 797     if(lg == 0xff) continue;
 798     n++;
 799   }
 800   return n;
 801 }
 802
 803 /**
 804  * \brief mp_dvdnav_get_spu_clut() returns the spu clut
 805  * \param stream: - stream pointer
 806  * \return spu clut pointer
 807  */
 808 unsigned int *mp_dvdnav_get_spu_clut(stream_t *stream) {
 809     dvdnav_priv_t *priv = stream->priv;
 810     return (priv->state & NAV_FLAG_SPU_SET) ? priv->spu_clut : NULL;
 811 }
 812
 813 /**
 814  * \brief mp_dvdnav_get_highlight() get dvdnav highlight struct
 815  * \param stream: - stream pointer
 816  * \param hl    : - highlight struct pointer
 817  */
 818 void mp_dvdnav_get_highlight (stream_t *stream, nav_highlight_t *hl) {
 819   dvdnav_priv_t *priv = stream->priv;
 820   dvdnav_highlight_event_t hlev = priv->hlev;
 821
 822   hl->sx = hlev.sx;
 823   hl->sy = hlev.sy;
 824   hl->ex = hlev.ex;
 825   hl->ey = hlev.ey;
 826 }
 827
 828 void mp_dvdnav_switch_title (stream_t *stream, int title) {
 829   dvdnav_priv_t *priv = stream->priv;
 830   uint32_t titles;
 831
 832   dvdnav_get_number_of_titles (priv->dvdnav, &titles);
 833   if (title > 0 && title <= titles)
 834     dvdnav_title_play (priv->dvdnav, title);
 835 }
 836
 837 /**
 838  * \brief Check if end of stream has been reached
 839  * \param stream: - stream pointer
 840  * \return 1 on really eof
 841  */
 842 int mp_dvdnav_is_eof (stream_t *stream) {
 843   return ((dvdnav_priv_t *) stream->priv)->state & NAV_FLAG_EOF;
 844 }
 845
 846 /**
 847  * \brief Skip still frame
 848  * \param stream: - stream pointer
 849  * \return 0 on success
 850  */
 851 int mp_dvdnav_skip_still (stream_t *stream) {
 852   dvdnav_priv_t *priv = stream->priv;
 853   if (priv->still_length == 0xff)
 854     return 1;
 855   dvdnav_still_skip(priv->dvdnav);
 856   return 0;
 857 }
 858
 859 /**
 860  * \brief Skip wait event
 861  * \param stream: - stream pointer
 862  * \return 0 on success
 863  */
 864 int mp_dvdnav_skip_wait (stream_t *stream) {
 865   dvdnav_priv_t *priv = stream->priv;
 866   if (!(priv->state & NAV_FLAG_WAIT))
 867     return 1;
 868   priv->state &= ~NAV_FLAG_WAIT;
 869   dvdnav_wait_skip(priv->dvdnav);
 870   return 0;
 871 }
 872
 873 /**
 874  * \brief Set wait mode
 875  * \param stream  : - stream pointer
 876  * \param mode    : - if true, then suspend block read
 877  * \param automode: - if true, then VTS or cell change set wait mode
 878  */
 879 void mp_dvdnav_read_wait (stream_t *stream, int mode, int automode) {
 880   dvdnav_priv_t *priv = stream->priv;
 881   if (mode == 0)
 882     priv->state &= ~NAV_FLAG_WAIT_READ;
 883   if (mode > 0)
 884     priv->state |= NAV_FLAG_WAIT_READ;
 885   if (automode == 0)
 886     priv->state &= ~NAV_FLAG_WAIT_READ_AUTO;
 887   if (automode > 0)
 888     priv->state |= NAV_FLAG_WAIT_READ_AUTO;
 889 }
 890
 891 /**
 892  * \brief Check if cell has changed
 893  * \param stream: - stream pointer
 894  * \param clear : - if true, then clear cell change flag
 895  * \return 1 if cell has changed
 896  */
 897 int mp_dvdnav_cell_has_changed (stream_t *stream, int clear) {
 898   dvdnav_priv_t *priv = stream->priv;
 899   if (!(priv->state & NAV_FLAG_CELL_CHANGED))
 900     return 0;
 901   if (clear) {
 902     priv->state &= ~NAV_FLAG_CELL_CHANGED;
 903     priv->state |= NAV_FLAG_STREAM_CHANGE;
 904   }
 905   return 1;
 906 }
 907
 908 /* Notify if something has changed in stream
 909  * Can be related to title, chapter, audio or SPU
 910  */
 911 int mp_dvdnav_stream_has_changed (stream_t *stream) {
 912   dvdnav_priv_t *priv = stream->priv;
 913
 914   if (!(priv->state & NAV_FLAG_STREAM_CHANGE))
 915     return 0;
 916
 917   priv->state &= ~NAV_FLAG_STREAM_CHANGE;
 918   return 1;
 919 }
 920
 921 const stream_info_t stream_info_dvdnav = {
 922   "DVDNAV stream",
 923   "null",
 924   "",
 925   "",
 926   open_s,
 927   { "dvdnav", NULL },
 928   &stream_opts,
 929   1 // Urls are an option string
 930 };