libdvdnav/navigation.c

   1 /*
   2  * Copyright (C) 2000 Rich Wareham <richwareham@users.sourceforge.net>
   3  *
   4  * This file is part of libdvdnav, a DVD navigation library.
   5  *
   6  * libdvdnav 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  * libdvdnav 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 libdvdnav; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #ifdef HAVE_CONFIG_H
  22 #include "config.h"
  23 #endif
  24
  25 #include <inttypes.h>
  26 #include <limits.h>
  27 #include <string.h>
  28 #include <sys/time.h>
  29 #include "dvdnav/dvdnav.h"
  30 #include <dvdread/nav_types.h>
  31 #include <dvdread/ifo_types.h>
  32 #include "remap.h"
  33 #include "vm/decoder.h"
  34 #include "vm/vm.h"
  35 #include "dvdnav_internal.h"
  36
  37 /* Navigation API calls */
  38
  39 dvdnav_status_t dvdnav_still_skip(dvdnav_t *this) {
  40   pthread_mutex_lock(&this->vm_lock);
  41   this->position_current.still = 0;
  42   pthread_mutex_unlock(&this->vm_lock);
  43   this->skip_still = 1;
  44   this->sync_wait = 0;
  45   this->sync_wait_skip = 1;
  46
  47   return DVDNAV_STATUS_OK;
  48 }
  49
  50 dvdnav_status_t dvdnav_wait_skip(dvdnav_t *this) {
  51   this->sync_wait = 0;
  52   this->sync_wait_skip = 1;
  53
  54   return DVDNAV_STATUS_OK;
  55 }
  56
  57 dvdnav_status_t dvdnav_get_number_of_titles(dvdnav_t *this, int32_t *titles) {
  58   if (!this->vm->vmgi) {
  59     printerr("Bad VM state.");
  60     return DVDNAV_STATUS_ERR;
  61   }
  62
  63   (*titles) = vm_get_vmgi(this->vm)->tt_srpt->nr_of_srpts;
  64
  65   return DVDNAV_STATUS_OK;
  66 }
  67
  68 dvdnav_status_t dvdnav_get_number_of_parts(dvdnav_t *this, int32_t title, int32_t *parts) {
  69   if (!this->vm->vmgi) {
  70     printerr("Bad VM state.");
  71     return DVDNAV_STATUS_ERR;
  72   }
  73   if ((title < 1) || (title > vm_get_vmgi(this->vm)->tt_srpt->nr_of_srpts) ) {
  74     printerr("Passed a title number out of range.");
  75     return DVDNAV_STATUS_ERR;
  76   }
  77
  78   (*parts) = vm_get_vmgi(this->vm)->tt_srpt->title[title-1].nr_of_ptts;
  79
  80   return DVDNAV_STATUS_OK;
  81 }
  82
  83 dvdnav_status_t dvdnav_current_title_info(dvdnav_t *this, int32_t *title, int32_t *part) {
  84   int32_t retval;
  85
  86   pthread_mutex_lock(&this->vm_lock);
  87   if (!this->vm->vtsi || !this->vm->vmgi) {
  88     printerr("Bad VM state.");
  89     pthread_mutex_unlock(&this->vm_lock);
  90     return DVDNAV_STATUS_ERR;
  91   }
  92   if (!this->started) {
  93     printerr("Virtual DVD machine not started.");
  94     pthread_mutex_unlock(&this->vm_lock);
  95     return DVDNAV_STATUS_ERR;
  96   }
  97   if (!this->vm->state.pgc) {
  98     printerr("No current PGC.");
  99     pthread_mutex_unlock(&this->vm_lock);
 100     return DVDNAV_STATUS_ERR;
 101   }
 102   if ( (this->vm->state.domain == VTSM_DOMAIN)
 103       || (this->vm->state.domain == VMGM_DOMAIN) ) {
 104     /* Get current Menu ID: into *part. */
 105     if(! vm_get_current_menu(this->vm, part)) {
 106       pthread_mutex_unlock(&this->vm_lock);
 107       return DVDNAV_STATUS_ERR;
 108     }
 109     if (*part > -1) {
 110       *title = 0;
 111       pthread_mutex_unlock(&this->vm_lock);
 112       return DVDNAV_STATUS_OK;
 113     }
 114   }
 115   if (this->vm->state.domain == VTS_DOMAIN) {
 116     retval = vm_get_current_title_part(this->vm, title, part);
 117     pthread_mutex_unlock(&this->vm_lock);
 118     return retval ? DVDNAV_STATUS_OK : DVDNAV_STATUS_ERR;
 119   }
 120   printerr("Not in a title or menu.");
 121   pthread_mutex_unlock(&this->vm_lock);
 122   return DVDNAV_STATUS_ERR;
 123 }
 124
 125 dvdnav_status_t dvdnav_title_play(dvdnav_t *this, int32_t title) {
 126   return dvdnav_part_play(this, title, 1);
 127 }
 128
 129 dvdnav_status_t dvdnav_part_play(dvdnav_t *this, int32_t title, int32_t part) {
 130   int32_t retval;
 131
 132   pthread_mutex_lock(&this->vm_lock);
 133   if (!this->vm->vmgi) {
 134     printerr("Bad VM state.");
 135     pthread_mutex_unlock(&this->vm_lock);
 136     return DVDNAV_STATUS_ERR;
 137   }
 138   if (!this->started) {
 139     /* don't report an error but be nice */
 140     vm_start(this->vm);
 141     this->started = 1;
 142   }
 143   if (!this->vm->state.pgc) {
 144     printerr("No current PGC.");
 145     pthread_mutex_unlock(&this->vm_lock);
 146     return DVDNAV_STATUS_ERR;
 147   }
 148   if((title < 1) || (title > this->vm->vmgi->tt_srpt->nr_of_srpts)) {
 149     printerr("Title out of range.");
 150     pthread_mutex_unlock(&this->vm_lock);
 151     return DVDNAV_STATUS_ERR;
 152   }
 153   if((part < 1) || (part > this->vm->vmgi->tt_srpt->title[title-1].nr_of_ptts)) {
 154     printerr("Part out of range.");
 155     pthread_mutex_unlock(&this->vm_lock);
 156     return DVDNAV_STATUS_ERR;
 157   }
 158
 159   retval = vm_jump_title_part(this->vm, title, part);
 160   if (retval)
 161     this->vm->hop_channel++;
 162   pthread_mutex_unlock(&this->vm_lock);
 163
 164   return retval ? DVDNAV_STATUS_OK : DVDNAV_STATUS_ERR;
 165 }
 166
 167 dvdnav_status_t dvdnav_part_play_auto_stop(dvdnav_t *this, int32_t title,
 168                                            int32_t part, int32_t parts_to_play) {
 169   /* FIXME: Implement auto-stop */
 170  if (dvdnav_part_play(this, title, part) == DVDNAV_STATUS_OK)
 171    printerr("Not implemented yet.");
 172  return DVDNAV_STATUS_ERR;
 173 }
 174
 175 dvdnav_status_t dvdnav_time_play(dvdnav_t *this, int32_t title,
 176                                  uint64_t time) {
 177   /* FIXME: Implement */
 178   printerr("Not implemented yet.");
 179   return DVDNAV_STATUS_ERR;
 180 }
 181
 182 dvdnav_status_t dvdnav_stop(dvdnav_t *this) {
 183   pthread_mutex_lock(&this->vm_lock);
 184   this->vm->stopped = 1;
 185   pthread_mutex_unlock(&this->vm_lock);
 186   return DVDNAV_STATUS_OK;
 187 }
 188
 189 dvdnav_status_t dvdnav_go_up(dvdnav_t *this) {
 190   /* A nice easy function... delegate to the VM */
 191   pthread_mutex_lock(&this->vm_lock);
 192   vm_jump_up(this->vm);
 193   pthread_mutex_unlock(&this->vm_lock);
 194
 195   return DVDNAV_STATUS_OK;
 196 }