stream_dvdnav.c

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      double tm;
      tm = dvdnav_get_current_time(priv->dvdnav)/90000.0f;
      if(tm != -1)
      {
        *((double *)arg) = tm;
        return 1;
      }
      break;
    }
    case STREAM_CTRL_SEEK_TO_TIME:
    {
      uint64_t tm = (uint64_t) (*((double*)arg) * 90000);
      if(dvdnav_time_search(priv->dvdnav, tm) == DVDNAV_STATUS_OK)
        return 1;
      break;
    }
#endif
  }

  return STREAM_UNSUPPORTED;
}

static int open_s(stream_t *stream,int mode, void* opts, int* file_format) {
  struct stream_priv_s* p = (struct stream_priv_s*)opts;
  char *filename;
  dvdnav_priv_t *priv;

  if(p->device) filename = p->device; 
  else if(dvd_device) filename= dvd_device; 
  else filename = DEFAULT_DVD_DEVICE;
  if(!(priv=new_dvdnav_stream(filename))) {
    mp_msg(MSGT_OPEN,MSGL_ERR,MSGTR_CantOpenDVD,filename);
    return STREAM_UNSUPPORTED;
  }

  if(p->track > 0) {
    if(dvd_chapter > 0 && dvd_last_chapter > 0 && dvd_chapter > dvd_last_chapter) {
      mp_msg(MSGT_OPEN,MSGL_FATAL,"dvdnav_stream, invalid chapter range: %d > %d\n", dvd_chapter, dvd_last_chapter);
      return STREAM_UNSUPPORTED;
    }
    priv->title = p->track;
    if(dvdnav_title_play(priv->dvdnav, p->track) != DVDNAV_STATUS_OK) {
      mp_msg(MSGT_OPEN,MSGL_FATAL,"dvdnav_stream, couldn't select title %d, error '%s'\n", p->track, dvdnav_err_to_string(priv->dvdnav));
      return STREAM_UNSUPPORTED;
    }
    if(dvd_chapter > 0)
      dvdnav_part_play(priv->dvdnav, p->track, dvd_chapter);
  } else if(p->track == -1)
    dvdnav_menu_call(priv->dvdnav, DVD_MENU_Root);
  else {
    mp_msg(MSGT_OPEN,MSGL_INFO,"dvdnav_stream, you didn't specify a track number (as in dvdnav://1), playing whole disc\n");
    dvdnav_menu_call(priv->dvdnav, DVD_MENU_Title);
  }
  if(dvd_angle > 1)
    dvdnav_angle_change(priv->dvdnav, dvd_angle);

  stream->sector_size = 2048;
  stream->flags = STREAM_READ | STREAM_SEEK;
  stream->fill_buffer = fill_buffer;
  stream->seek = seek;
  stream->control = control;
  stream->close = stream_dvdnav_close;
  stream->type = STREAMTYPE_DVDNAV;
  stream->priv=(void*)priv;
  *file_format = DEMUXER_TYPE_MPEG_PS;

  update_title_len(stream);
  if(!stream->pos)
    mp_msg(MSGT_OPEN,MSGL_ERR, "INIT ERROR: couldn't get init pos %s\r\n", dvdnav_err_to_string(priv->dvdnav));

  mp_msg(MSGT_OPEN,MSGL_INFO, "Remember to disable MPlayer's cache when playing dvdnav:// streams (adding -nocache to your command line)\r\n");

  return STREAM_OK;
}


int mp_dvdnav_handle_input(stream_t *stream, int cmd, int *button) {
  dvdnav_priv_t * priv=(dvdnav_priv_t*)stream->priv;
  dvdnav_t *nav = priv->dvdnav;
  dvdnav_status_t status=DVDNAV_STATUS_ERR;
  pci_t *pci = dvdnav_get_current_nav_pci(nav);
  int reset = 0;

  if(cmd != MP_CMD_DVDNAV_SELECT && !pci)
    return 0;

  switch(cmd) {
    case MP_CMD_DVDNAV_UP:
      status = dvdnav_upper_button_select(nav, pci);
      break;
    case MP_CMD_DVDNAV_DOWN:
      status = dvdnav_lower_button_select(nav, pci);
      break;
    case MP_CMD_DVDNAV_LEFT:
      status = dvdnav_left_button_select(nav, pci);
      break;
    case MP_CMD_DVDNAV_RIGHT:
      status = dvdnav_right_button_select(nav, pci);
      break;
    case MP_CMD_DVDNAV_MENU:
      status = dvdnav_menu_call(nav,DVD_MENU_Root);
      reset = 1;
      break;
    case MP_CMD_DVDNAV_PREVMENU: {
      int title=0, part=0;

      dvdnav_current_title_info(nav, &title, &part);
      if(title) {
        if(dvdnav_menu_call(nav, DVD_MENU_Part) == DVDNAV_STATUS_OK
           || dvdnav_menu_call(nav, DVD_MENU_Title) == DVDNAV_STATUS_OK) {
          reset = 1;
          break;
        }
      }
      if(dvdnav_menu_call(nav, DVD_MENU_Root) == DVDNAV_STATUS_OK)
        reset = 1;
      }
      break;
    case MP_CMD_DVDNAV_SELECT:
      status = dvdnav_button_activate(nav, pci);
      if(status == DVDNAV_STATUS_OK) reset = 1;
      break;
    case MP_CMD_DVDNAV_MOUSECLICK:
      /*
        this is a workaround: in theory the simple dvdnav_lower_button_select()+dvdnav_button_activate()
        should be enough (and generally it is), but there are cases when the calls to dvdnav_lower_button_select()
        and friends fail! Hence we have to call dvdnav_mouse_activate(priv->mousex, priv->mousey) with
        the coodinates saved by mp_dvdnav_update_mouse_pos().
        This last call always works well
      */
      status = dvdnav_mouse_activate(nav, pci, priv->mousex, priv->mousey);
      if(status == DVDNAV_STATUS_OK) reset = 1;
      break;
    default:
      mp_msg(MSGT_CPLAYER, MSGL_V, "Unknown DVDNAV cmd %d\n", cmd);
      break;
  }

  if(status == DVDNAV_STATUS_OK)
    dvdnav_get_current_highlight(nav, button);

  return reset;
}

void mp_dvdnav_update_mouse_pos(stream_t *stream, int32_t x, int32_t y, int* button) {
  dvdnav_priv_t * priv=(dvdnav_priv_t*)stream->priv;
  dvdnav_t *nav = priv->dvdnav;
  dvdnav_status_t status;
  pci_t *pci = dvdnav_get_current_nav_pci(nav);

  if(!pci) return;

  status = dvdnav_mouse_select(nav, pci, x, y);
  if(status == DVDNAV_STATUS_OK) dvdnav_get_current_highlight(nav, button);
  else *button = -1;
  priv->mousex = x;
  priv->mousey = y;
}

/**
 * \brief dvdnav_aid_from_lang() returns the audio id corresponding to the language code 'lang'
 * \param stream: - stream pointer
 * \param lang: 2-characters language code[s], eventually separated by spaces of commas
 * \return -1 on error, current subtitle id if successful
 */
int dvdnav_aid_from_lang(stream_t *stream, unsigned char *language) {
  dvdnav_priv_t * priv=(dvdnav_priv_t*)stream->priv;
  int k;
  uint8_t format, lg;
  uint16_t lang, lcode;;

#ifdef DVDNAV_FORMAT_AC3
  //this macro is defined only in libdvdnav-cvs
  while(language && strlen(language)>=2) {
    lcode = (language[0] << 8) | (language[1]);
    for(k=0; k<32; k++) {
      lg = dvdnav_get_audio_logical_stream(priv->dvdnav, k);
      if(lg == 0xff) continue;
      lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
      if(lang != 0xFFFF && lang == lcode) {
        format = dvdnav_audio_stream_format(priv->dvdnav, lg);
        switch(format) {
          case DVDNAV_FORMAT_AC3:
            return k+128;
          case DVDNAV_FORMAT_DTS:
            return k+136;
          case DVDNAV_FORMAT_LPCM:
            return k+160;
          case DVDNAV_FORMAT_MPEGAUDIO:
            return k;
          default:
            return -1;
        }
      }
    }
    language += 2;
    while(language[0]==',' || language[0]==' ') ++language;
  }
#endif
  return -1;
}

/**
 * \brief dvdnav_lang_from_aid() assigns to buf the language corresponding to audio id 'aid'
 * \param stream: - stream pointer
 * \param sid: physical subtitle id
 * \param buf: buffer to contain the 2-chars language string
 * \return 0 on error, 1 if successful
 */
int dvdnav_lang_from_aid(stream_t *stream, int aid, unsigned char *buf) {
  uint8_t lg;
  uint16_t lang;
  dvdnav_priv_t * priv=(dvdnav_priv_t*)stream->priv;

  if(aid < 0)
    return 0;
  lg = dvdnav_get_audio_logical_stream(priv->dvdnav, aid & 0x7);
  if(lg == 0xff) return 0;
  lang = dvdnav_audio_stream_to_lang(priv->dvdnav, lg);
  if(lang == 0xffff) return 0;
  buf[0] = lang >> 8;
  buf[1] = lang & 0xFF;
  buf[2] = 0;
  return 1;
}


/**
 * \brief dvdnav_sid_from_lang() returns the subtitle id corresponding to the language code 'lang'
 * \param stream: - stream pointer
 * \param lang: 2-characters language code[s], eventually separated by spaces of commas
 * \return -1 on error, current subtitle id if successful
 */
int dvdnav_sid_from_lang(stream_t *stream, unsigned char *language) {
  dvdnav_priv_t * priv=(dvdnav_priv_t*)stream->priv;
  uint8_t lg, k;
  uint16_t lang, lcode;

  while(language && strlen(language)>=2) {
    lcode = (language[0] << 8) | (language[1]);
    for(k=0; k<32; k++) {
      lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
      if(lg == 0xff) continue;
      lang = dvdnav_spu_stream_to_lang(priv->dvdnav, lg);
      if(lang != 0xFFFF && lang == lcode) {
        return k;
      }
    }
    language += 2;
    while(language[0]==',' || language[0]==' ') ++language;
  }
  return -1;
}

/**
 * \brief dvdnav_lang_from_sid() assigns to buf the language corresponding to subtitle id 'sid'
 * \param stream: - stream pointer
 * \param sid: physical subtitle id
 * \param buf: buffer to contain the 2-chars language string
 * \return 0 on error, 1 if successful
 */
int dvdnav_lang_from_sid(stream_t *stream, int sid, unsigned char *buf) {
    uint8_t lg;
    uint16_t lang;
    dvdnav_priv_t *priv=(dvdnav_priv_t*)stream->priv;
    if(sid < 0) return 0;
    lg = dvdnav_get_spu_logical_stream(priv->dvdnav, sid);
    lang = dvdnav_spu_stream_to_lang(priv->dvdnav, lg);
    if(lang == 0xffff) return 0;
    buf[0] = lang >> 8;
    buf[1] = lang & 0xFF;
    buf[2] = 0;
    return 1;
}

/**
 * \brief dvdnav_number_of_subs() returns the count of available subtitles
 * \param stream: - stream pointer
 * \return 0 on error, something meaningful otherwise
 */
int dvdnav_number_of_subs(stream_t *stream) {
  dvdnav_priv_t * priv=(dvdnav_priv_t*)stream->priv;
  uint8_t lg, k, n=0;

  for(k=0; k<32; k++) {
    lg = dvdnav_get_spu_logical_stream(priv->dvdnav, k);
    if(lg == 0xff) continue;
    n++;
  }
  return n;
}

/**
 * \brief mp_dvdnav_get_spu_clut() returns the spu clut
 * \param stream: - stream pointer
 * \return spu clut pointer
 */
unsigned int *mp_dvdnav_get_spu_clut(stream_t *stream) {
    dvdnav_priv_t *priv=(dvdnav_priv_t*)stream->priv;
    if(!priv->spu_set) return NULL;
    return priv->spu_clut;
}

/**
 * \brief mp_dvdnav_get_highlight() get dvdnav highlight struct
 * \param stream: - stream pointer
 * \param hl    : - highlight struct pointer
 */
void mp_dvdnav_get_highlight (stream_t *stream, nav_highlight_t *hl) {
  dvdnav_priv_t *priv = (dvdnav_priv_t *) stream->priv;
  dvdnav_highlight_event_t hlev = priv->hlev;

  hl->sx = hlev.sx;
  hl->sy = hlev.sy;
  hl->ex = hlev.ex;
  hl->ey = hlev.ey;
}

stream_info_t stream_info_dvdnav = {
  "DVDNAV stream",
  "null",
  "",
  "",
  open_s,
  { "dvdnav", NULL },
  &stream_opts,
  1 // Urls are an option string
};