libs/ardour/port_set.cc

   1 /*
   2     Copyright (C) 2006 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify it
   5     under the terms of the GNU General Public License as published by the Free
   6     Software Foundation; either version 2 of the License, or (at your option)
   7     any later version.
   8
   9     This program is distributed in the hope that it will be useful, but WITHOUT
  10     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11     FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12     for more details.
  13
  14     You should have received a copy of the GNU General Public License along
  15     with this program; if not, write to the Free Software Foundation, Inc.,
  16     675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 #include <string>
  20
  21 #include "ardour/port_set.h"
  22 #include "ardour/midi_port.h"
  23 #include "ardour/audio_port.h"
  24
  25 using std::string;
  26
  27 namespace ARDOUR {
  28
  29 PortSet::PortSet()
  30 {
  31         for (size_t i=0; i < DataType::num_types; ++i)
  32                 _ports.push_back( PortVec() );
  33 }
  34
  35 static bool sort_ports_by_name (Port* a, Port* b)
  36 {
  37         string aname (a->name());
  38         string bname (b->name());
  39
  40         string::size_type last_digit_position_a = aname.size();
  41         string::reverse_iterator r_iterator = aname.rbegin();
  42
  43         while (r_iterator!= aname.rend() && Glib::Unicode::isdigit(*r_iterator)) {
  44                 r_iterator++;
  45                 last_digit_position_a--;
  46         }
  47
  48         string::size_type last_digit_position_b = bname.size();
  49         r_iterator = bname.rbegin();
  50
  51         while (r_iterator != bname.rend() && Glib::Unicode::isdigit(*r_iterator)) {
  52                 r_iterator++;
  53                 last_digit_position_b--;
  54         }
  55
  56         // if some of the names don't have a number as posfix, compare as strings
  57
  58         if (last_digit_position_a == aname.size() or last_digit_position_b == bname.size()) {
  59                 return aname < bname;
  60         }
  61
  62         const std::string       prefix_a = aname.substr(0, last_digit_position_a - 1);
  63         const unsigned int      posfix_a = std::atoi(aname.substr(last_digit_position_a, aname.size() - last_digit_position_a).c_str());
  64         const std::string       prefix_b = bname.substr(0, last_digit_position_b - 1);
  65         const unsigned int      posfix_b = std::atoi(bname.substr(last_digit_position_b, bname.size() - last_digit_position_b).c_str());
  66
  67         if (prefix_a != prefix_b) {
  68                 return aname < bname;
  69         } else {
  70                 return posfix_a < posfix_b;
  71         }
  72 }
  73
  74 void
  75 PortSet::add(Port* port)
  76 {
  77         PortVec& v = _ports[port->type()];
  78
  79         v.push_back(port);
  80
  81         sort(v.begin(), v.end(), sort_ports_by_name);
  82         _count.set(port->type(), _count.get(port->type()) + 1);
  83         assert(_count.get(port->type()) == _ports[port->type()].size());
  84 }
  85
  86 bool
  87 PortSet::remove(Port* port)
  88 {
  89         for (std::vector<PortVec>::iterator l = _ports.begin(); l != _ports.end(); ++l) {
  90                 PortVec::iterator i = find(l->begin(), l->end(), port);
  91                 if (i != l->end()) {
  92                         l->erase(i);
  93                         _count.set(port->type(), _count.get(port->type()) - 1);
  94                         return true;
  95                 }
  96         }
  97
  98         return false;
  99 }
 100
 101 /** Get the total number of ports (of all types) in the PortSet
 102  */
 103 size_t
 104 PortSet::num_ports() const
 105 {
 106         size_t ret = 0;
 107
 108         for (std::vector<PortVec>::const_iterator l = _ports.begin(); l != _ports.end(); ++l)
 109                 ret += (*l).size();
 110
 111         return ret;
 112 }
 113
 114 bool
 115 PortSet::contains(const Port* port) const
 116 {
 117         for (std::vector<PortVec>::const_iterator l = _ports.begin(); l != _ports.end(); ++l)
 118                 if (find((*l).begin(), (*l).end(), port) != (*l).end())
 119                         return true;
 120
 121         return false;
 122 }
 123
 124 Port*
 125 PortSet::port(size_t n) const
 126 {
 127         // This is awesome.  Awesomely slow.
 128
 129         size_t size_so_far = 0;
 130
 131         for (std::vector<PortVec>::const_iterator l = _ports.begin(); l != _ports.end(); ++l) {
 132                 if (n < size_so_far + (*l).size())
 133                         return (*l)[n - size_so_far];
 134                 else
 135                         size_so_far += (*l).size();
 136         }
 137
 138         return NULL; // n out of range
 139 }
 140
 141 Port*
 142 PortSet::port(DataType type, size_t n) const
 143 {
 144         if (type == DataType::NIL) {
 145                 return port(n);
 146         } else {
 147                 const PortVec& v = _ports[type];
 148                 assert(n < v.size());
 149                 return v[n];
 150         }
 151 }
 152
 153 AudioPort*
 154 PortSet::nth_audio_port(size_t n) const
 155 {
 156         return dynamic_cast<AudioPort*>(port(DataType::AUDIO, n));
 157 }
 158
 159 MidiPort*
 160 PortSet::nth_midi_port(size_t n) const
 161 {
 162         return dynamic_cast<MidiPort*>(port(DataType::MIDI, n));
 163 }
 164
 165 } // namepace ARDOUR