vcdplayer.c

来自「VLC媒体播放程序」· C语言 代码 · 共 561 行 · 第 1/2 页

                                                       p_vcd->pdi);
    vcdinfo_itemid_t trans_itemid;

    if (VCDINFO_INVALID_ITEMID == trans_itemid_num) return false;
    
    vcdinfo_classify_itemid(trans_itemid_num, &trans_itemid);
    dbg_print(INPUT_DBG_PBC, "  play-item[%d]: %s",
              p_vcd->pdi, vcdinfo_pin2str (trans_itemid_num));
    return VLC_SUCCESS == VCDPlay( p_input, trans_itemid );
  }
}

/*!
  Play item assocated with the "default" selection.

  Return false if there was some problem.
*/
bool
vcdplayer_play_default( input_thread_t * p_input )
{
  thread_vcd_data_t *p_vcd= (thread_vcd_data_t *)p_input->p_access_data;

  vcdinfo_itemid_t   itemid;

  dbg_print( (INPUT_DBG_CALL|INPUT_DBG_PBC), 
	     "current: %d" , p_vcd->play_item.num);

  itemid.type = p_vcd->play_item.type;

  if  (vcdplayer_pbc_is_on(p_vcd)) {

    lid_t lid=vcdinfo_get_multi_default_lid(p_vcd->vcd, p_vcd->cur_lid,
					    itemid.num);

    if (VCDINFO_INVALID_LID != lid) {
      itemid.num  = lid;
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      dbg_print(INPUT_DBG_PBC, "DEFAULT to %d\n", itemid.num);
    } else {
      dbg_print(INPUT_DBG_PBC, "no DEFAULT for LID %d\n", p_vcd->cur_lid);
    }
    

  } else {

    /* PBC is not on. "default" selection beginning of current 
       selection . */
  
    p_vcd->play_item.num = p_vcd->play_item.num;
    
  }

  /** ??? p_vcd->update_title(); ***/
  return VLC_SUCCESS == VCDPlay( p_input, itemid );

}

/*!
  Play item assocated with the "next" selection.

  Return false if there was some problem.
*/
bool
vcdplayer_play_next( input_thread_t * p_input )
{
  thread_vcd_data_t *p_vcd= (thread_vcd_data_t *)p_input->p_access_data;

  vcdinfo_obj_t     *obj;
  vcdinfo_itemid_t   itemid;

  if (!p_vcd) return false;

  dbg_print( (INPUT_DBG_CALL|INPUT_DBG_PBC), 
	     "current: %d" , p_vcd->play_item.num);

  obj = p_vcd->vcd;

  itemid.type = p_vcd->play_item.type;

  if  (vcdplayer_pbc_is_on(p_vcd)) {

    vcdinfo_lid_get_pxd(obj, &(p_vcd->pxd), p_vcd->cur_lid);
    
    switch (p_vcd->pxd.descriptor_type) {
    case PSD_TYPE_SELECTION_LIST:
    case PSD_TYPE_EXT_SELECTION_LIST:
      if (p_vcd->pxd.psd == NULL) return false;
      vcdplayer_update_entry( p_input, 
			      vcdinf_psd_get_next_offset(p_vcd->pxd.psd), 
			      &itemid.num, "next");
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      break;

    case PSD_TYPE_PLAY_LIST: 
      if (p_vcd->pxd.pld == NULL) return false;
      vcdplayer_update_entry( p_input, 
			      vcdinf_pld_get_next_offset(p_vcd->pxd.pld), 
			      &itemid.num, "next");
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      break;
      
    case PSD_TYPE_END_LIST:
    case PSD_TYPE_COMMAND_LIST:
      LOG_WARN( "There is no PBC 'next' selection here" );
      return false;
    }
  } else {

    /* PBC is not on. "Next" selection is play_item.num+1 if possible. */
  
    int max_entry = 0;

    switch (p_vcd->play_item.type) {
    case VCDINFO_ITEM_TYPE_ENTRY: 
    case VCDINFO_ITEM_TYPE_SEGMENT: 
    case VCDINFO_ITEM_TYPE_TRACK: 
      
      switch (p_vcd->play_item.type) {
      case VCDINFO_ITEM_TYPE_ENTRY: 
	max_entry = p_vcd->num_entries;
	break;
      case VCDINFO_ITEM_TYPE_SEGMENT: 
	max_entry = p_vcd->num_segments;
	break;
      case VCDINFO_ITEM_TYPE_TRACK: 
	max_entry = p_vcd->num_tracks;
	break;
      default: ; /* Handle exceptional cases below */
      }
      
      if (p_vcd->play_item.num+1 < max_entry) {
	itemid.num = p_vcd->play_item.num+1;
      } else {
	LOG_WARN( "At the end - non-PBC 'next' not possible here" );
	return false;
      }
      
      break;
      
    case VCDINFO_ITEM_TYPE_LID: 
      {
	/* Should have handled above. */
	LOG_WARN( "Internal inconsistency - should not have gotten here." );
	return false;
      }
    default: 
      return false;
    }
  }

  /** ??? p_vcd->update_title(); ***/
  return VLC_SUCCESS == VCDPlay( p_input, itemid );

}

/*!
  Play item assocated with the "prev" selection.

  Return false if there was some problem.
*/
bool
vcdplayer_play_prev( input_thread_t * p_input )
{
  thread_vcd_data_t *p_vcd= (thread_vcd_data_t *)p_input->p_access_data;

  vcdinfo_obj_t     *obj  = p_vcd->vcd;
  vcdinfo_itemid_t   itemid;

  dbg_print( (INPUT_DBG_CALL|INPUT_DBG_PBC), 
	     "current: %d" , p_vcd->play_item.num);

  itemid.type = p_vcd->play_item.type;

  if  (vcdplayer_pbc_is_on(p_vcd)) {

    vcdinfo_lid_get_pxd(obj, &(p_vcd->pxd), p_vcd->cur_lid);
    
    switch (p_vcd->pxd.descriptor_type) {
    case PSD_TYPE_SELECTION_LIST:
    case PSD_TYPE_EXT_SELECTION_LIST:
      if (p_vcd->pxd.psd == NULL) return false;
      vcdplayer_update_entry( p_input, 
			      vcdinf_psd_get_prev_offset(p_vcd->pxd.psd), 
			      &itemid.num, "prev");
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      break;

    case PSD_TYPE_PLAY_LIST: 
      if (p_vcd->pxd.pld == NULL) return false;
      vcdplayer_update_entry( p_input, 
			      vcdinf_pld_get_prev_offset(p_vcd->pxd.pld), 
			      &itemid.num, "prev");
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      break;
      
    case PSD_TYPE_END_LIST:
    case PSD_TYPE_COMMAND_LIST:
      LOG_WARN( "There is no PBC 'prev' selection here" );
      return false;
    }
  } else {

    /* PBC is not on. "Prev" selection is play_item.num-1 if possible. */
  
    int min_entry = (VCDINFO_ITEM_TYPE_ENTRY == p_vcd->play_item.type) 
      ? 0 : 1;
    
    if (p_vcd->play_item.num > min_entry) {
      itemid.num = p_vcd->play_item.num-1;
    } else {
      LOG_WARN( "At the beginning - non-PBC 'prev' not possible here" );
      return false;
    }
      
  }

  /** ??? p_vcd->update_title(); ***/
  return VLC_SUCCESS == VCDPlay( p_input, itemid );

}

/*!
  Play item assocated with the "return" selection.

  Return false if there was some problem.
*/
bool
vcdplayer_play_return( input_thread_t * p_input )
{
  thread_vcd_data_t *p_vcd= (thread_vcd_data_t *)p_input->p_access_data;

  vcdinfo_obj_t     *obj  = p_vcd->vcd;
  vcdinfo_itemid_t   itemid;

  dbg_print( (INPUT_DBG_CALL|INPUT_DBG_PBC), 
	     "current: %d" , p_vcd->play_item.num);

  itemid.type = p_vcd->play_item.type;

  if  (vcdplayer_pbc_is_on(p_vcd)) {

    vcdinfo_lid_get_pxd(obj, &(p_vcd->pxd), p_vcd->cur_lid);
    
    switch (p_vcd->pxd.descriptor_type) {
    case PSD_TYPE_SELECTION_LIST:
    case PSD_TYPE_EXT_SELECTION_LIST:
      if (p_vcd->pxd.psd == NULL) return false;
      vcdplayer_update_entry( p_input, 
			      vcdinf_psd_get_return_offset(p_vcd->pxd.psd), 
			      &itemid.num, "return");
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      break;

    case PSD_TYPE_PLAY_LIST: 
      if (p_vcd->pxd.pld == NULL) return false;
      vcdplayer_update_entry( p_input, 
			      vcdinf_pld_get_return_offset(p_vcd->pxd.pld), 
			      &itemid.num, "return");
      itemid.type = VCDINFO_ITEM_TYPE_LID;
      break;
      
    case PSD_TYPE_END_LIST:
    case PSD_TYPE_COMMAND_LIST:
      LOG_WARN( "There is no PBC 'return' selection here" );
      return false;
    }
  } else {

    /* PBC is not on. "Return" selection is min_entry if possible. */
  
    p_vcd->play_item.num = (VCDINFO_ITEM_TYPE_ENTRY == p_vcd->play_item.type) 
      ? 0 : 1;
    
  }

  /** ??? p_vcd->update_title(); ***/
  return VLC_SUCCESS == VCDPlay( p_input, itemid );

}