src/giface.cpp

   1 /* Calf DSP Library
   2  * Module wrapper methods.
   3  *
   4  * Copyright (C) 2001-2007 Krzysztof Foltman
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2 of the License, or (at your option) any later version.
  10  *
  11  * This program 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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General
  17  * Public License along with this program; if not, write to the
  18  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  19  * Boston, MA 02111-1307, USA.
  20  */
  21 #include <config.h>
  22 #include <assert.h>
  23 #include <memory.h>
  24 #include <calf/giface.h>
  25 #include <calf/osctlnet.h>
  26
  27 using namespace std;
  28 using namespace calf_utils;
  29 using namespace calf_plugins;
  30
  31 float parameter_properties::from_01(double value01) const
  32 {
  33     double value = dsp::clip(value01, 0., 1.);
  34     switch(flags & PF_SCALEMASK)
  35     {
  36     case PF_SCALE_DEFAULT:
  37     case PF_SCALE_LINEAR:
  38     case PF_SCALE_PERC:
  39     default:
  40         value = min + (max - min) * value01;
  41         break;
  42     case PF_SCALE_QUAD:
  43         value = min + (max - min) * value01 * value01;
  44         break;
  45     case PF_SCALE_LOG:
  46         value = min * pow(double(max / min), value01);
  47         break;
  48     case PF_SCALE_GAIN:
  49         if (value01 < 0.00001)
  50             value = min;
  51         else {
  52             float rmin = std::max(1.0f / 1024.0f, min);
  53             value = rmin * pow(double(max / rmin), value01);
  54         }
  55         break;
  56     case PF_SCALE_LOG_INF:
  57         assert(step);
  58         if (value01 > (step - 1.0) / step)
  59             value = FAKE_INFINITY;
  60         else
  61             value = min * pow(double(max / min), value01 * step / (step - 1.0));
  62         break;
  63     }
  64     switch(flags & PF_TYPEMASK)
  65     {
  66     case PF_INT:
  67     case PF_BOOL:
  68     case PF_ENUM:
  69     case PF_ENUM_MULTI:
  70         if (value > 0)
  71             value = (int)(value + 0.5);
  72         else
  73             value = (int)(value - 0.5);
  74         break;
  75     }
  76     return value;
  77 }
  78
  79 double parameter_properties::to_01(float value) const
  80 {
  81     switch(flags & PF_SCALEMASK)
  82     {
  83     case PF_SCALE_DEFAULT:
  84     case PF_SCALE_LINEAR:
  85     case PF_SCALE_PERC:
  86     default:
  87         return double(value - min) / (max - min);
  88     case PF_SCALE_QUAD:
  89         return sqrt(double(value - min) / (max - min));
  90     case PF_SCALE_LOG:
  91         value /= min;
  92         return log((double)value) / log((double)max / min);
  93     case PF_SCALE_LOG_INF:
  94         if (IS_FAKE_INFINITY(value))
  95             return max;
  96         value /= min;
  97         assert(step);
  98         return (step - 1.0) * log((double)value) / (step * log((double)max / min));
  99     case PF_SCALE_GAIN:
 100         if (value < 1.0 / 1024.0) // new bottom limit - 60 dB
 101             return 0;
 102         double rmin = std::max(1.0f / 1024.0f, min);
 103         value /= rmin;
 104         return log((double)value) / log(max / rmin);
 105     }
 106 }
 107
 108 float parameter_properties::get_increment() const
 109 {
 110     float increment = 0.01;
 111     if (step > 1)
 112         increment = 1.0 / (step - 1);
 113     else
 114     if (step > 0 && step < 1)
 115         increment = step;
 116     else
 117     if ((flags & PF_TYPEMASK) != PF_FLOAT)
 118         increment = 1.0 / (max - min);
 119     return increment;
 120 }
 121
 122 int parameter_properties::get_char_count() const
 123 {
 124     if ((flags & PF_SCALEMASK) == PF_SCALE_PERC)
 125         return 6;
 126     if ((flags & PF_SCALEMASK) == PF_SCALE_GAIN) {
 127         char buf[256];
 128         size_t len = 0;
 129         sprintf(buf, "%0.0f dB", 6.0 * log(min) / log(2));
 130         len = strlen(buf);
 131         sprintf(buf, "%0.0f dB", 6.0 * log(max) / log(2));
 132         len = std::max(len, strlen(buf)) + 2;
 133         return (int)len;
 134     }
 135     return std::max(to_string(min).length(), std::max(to_string(max).length(), to_string(min + (max-min) * 0.987654).length()));
 136 }
 137
 138 std::string parameter_properties::to_string(float value) const
 139 {
 140     char buf[32];
 141     if ((flags & PF_SCALEMASK) == PF_SCALE_PERC) {
 142         sprintf(buf, "%0.f%%", 100.0 * value);
 143         return string(buf);
 144     }
 145     if ((flags & PF_SCALEMASK) == PF_SCALE_GAIN) {
 146         if (value < 1.0 / 1024.0) // new bottom limit - 60 dB
 147             return "-inf dB"; // XXXKF change to utf-8 infinity
 148         sprintf(buf, "%0.1f dB", 6.0 * log(value) / log(2));
 149         return string(buf);
 150     }
 151     switch(flags & PF_TYPEMASK)
 152     {
 153     case PF_STRING:
 154         return "N/A";
 155     case PF_INT:
 156     case PF_BOOL:
 157     case PF_ENUM:
 158     case PF_ENUM_MULTI:
 159         value = (int)value;
 160         break;
 161     }
 162
 163     if ((flags & PF_SCALEMASK) == PF_SCALE_LOG_INF && IS_FAKE_INFINITY(value))
 164         sprintf(buf, "+inf"); // XXXKF change to utf-8 infinity
 165     else
 166         sprintf(buf, "%g", value);
 167
 168     switch(flags & PF_UNITMASK) {
 169     case PF_UNIT_DB: return string(buf) + " dB";
 170     case PF_UNIT_HZ: return string(buf) + " Hz";
 171     case PF_UNIT_SEC: return string(buf) + " s";
 172     case PF_UNIT_MSEC: return string(buf) + " ms";
 173     case PF_UNIT_CENTS: return string(buf) + " ct";
 174     case PF_UNIT_SEMITONES: return string(buf) + "#";
 175     case PF_UNIT_BPM: return string(buf) + " bpm";
 176     case PF_UNIT_RPM: return string(buf) + " rpm";
 177     case PF_UNIT_DEG: return string(buf) + " deg";
 178     case PF_UNIT_NOTE:
 179         {
 180             static const char *notes = "C C#D D#E F F#G G#A A#B ";
 181             int note = (int)value;
 182             if (note < 0 || note > 127)
 183                 return "---";
 184             return string(notes + 2 * (note % 12), 2) + i2s(note / 12 - 2);
 185         }
 186     }
 187
 188     return string(buf);
 189 }
 190
 191 void calf_plugins::plugin_ctl_iface::clear_preset() {
 192     int param_count = get_param_count();
 193     for (int i=0; i < param_count; i++)
 194     {
 195         parameter_properties &pp = *get_param_props(i);
 196         if ((pp.flags & PF_TYPEMASK) == PF_STRING)
 197         {
 198             configure(pp.short_name, pp.choices ? pp.choices[0] : "");
 199         }
 200         else
 201             set_param_value(i, pp.def_value);
 202     }
 203 }
 204
 205 const char *calf_plugins::load_gui_xml(const std::string &plugin_id)
 206 {
 207     try {
 208         return strdup(calf_utils::load_file((std::string(PKGLIBDIR) + "/gui-" + plugin_id + ".xml").c_str()).c_str());
 209     }
 210     catch(file_exception e)
 211     {
 212         return NULL;
 213     }
 214 }
 215
 216 bool calf_plugins::check_for_message_context_ports(parameter_properties *parameters, int count)
 217 {
 218     for (int i = count - 1; i >= 0; i--)
 219     {
 220         if (parameters[i].flags & PF_PROP_MSGCONTEXT)
 221             return true;
 222     }
 223     return false;
 224 }
 225
 226 bool calf_plugins::check_for_string_ports(parameter_properties *parameters, int count)
 227 {
 228     for (int i = count - 1; i >= 0; i--)
 229     {
 230         if ((parameters[i].flags & PF_TYPEMASK) == PF_STRING)
 231             return true;
 232         if ((parameters[i].flags & PF_TYPEMASK) < PF_STRING)
 233             return false;
 234     }
 235     return false;
 236 }
 237
 238 #if USE_DSSI
 239 struct osc_cairo_control: public cairo_iface
 240 {
 241     osctl::osc_inline_typed_strstream &os;
 242
 243     osc_cairo_control(osctl::osc_inline_typed_strstream &_os) : os(_os) {}
 244     virtual void set_source_rgba(float r, float g, float b, float a = 1.f)
 245     {
 246         os << (uint32_t)LGI_SET_RGBA << r << g << b << a;
 247     }
 248     virtual void set_line_width(float width)
 249     {
 250         os << (uint32_t)LGI_SET_WIDTH << width;
 251     }
 252 };
 253
 254 static void send_graph_via_osc(osctl::osc_client &client, const std::string &address, line_graph_iface *graph, std::vector<int> &params)
 255 {
 256     osctl::osc_inline_typed_strstream os;
 257     osc_cairo_control cairoctl(os);
 258     for (size_t i = 0; i < params.size(); i++)
 259     {
 260         int index = params[i];
 261         os << (uint32_t)LGI_GRAPH;
 262         os << (uint32_t)index;
 263         for (int j = 0; ; j++)
 264         {
 265             float data[128];
 266             if (graph->get_graph(index, j, data, 128, &cairoctl))
 267             {
 268                 os << (uint32_t)LGI_SUBGRAPH;
 269                 os << (uint32_t)128;
 270                 for (int p = 0; p < 128; p++)
 271                     os << data[p];
 272             }
 273             else
 274                 break;
 275         }
 276         for (int j = 0; ; j++)
 277         {
 278             float x, y;
 279             int size = 3;
 280             if (graph->get_dot(index, j, x, y, size, &cairoctl))
 281                 os << (uint32_t)LGI_DOT << x << y << (uint32_t)size;
 282             else
 283                 break;
 284         }
 285         for (int j = 0; ; j++)
 286         {
 287             float pos = 0;
 288             bool vertical = false;
 289             string legend;
 290             if (graph->get_gridline(index, j, pos, vertical, legend, &cairoctl))
 291                 os << (uint32_t)LGI_LEGEND << pos << (uint32_t)(vertical ? 1 : 0) << legend;
 292             else
 293                 break;
 294         }
 295         os << (uint32_t)LGI_END_ITEM;
 296     }
 297     os << (uint32_t)LGI_END;
 298     client.send(address, os);
 299 }
 300
 301 calf_plugins::dssi_feedback_sender::dssi_feedback_sender(const char *URI, line_graph_iface *_graph, calf_plugins::parameter_properties *props, int num_params)
 302 {
 303     graph = _graph;
 304     client = new osctl::osc_client;
 305     client->bind("0.0.0.0", 0);
 306     client->set_url(URI);
 307     for (int i = 0; i < num_params; i++)
 308     {
 309         if (props[i].flags & PF_PROP_GRAPH)
 310             indices.push_back(i);
 311     }
 312 }
 313
 314 void calf_plugins::dssi_feedback_sender::update()
 315 {
 316     send_graph_via_osc(*client, "/lineGraph", graph, indices);
 317 }
 318
 319 calf_plugins::dssi_feedback_sender::~dssi_feedback_sender()
 320 {
 321     // this would not be received by GUI's main loop because it's already been terminated
 322     // client->send("/iQuit");
 323     delete client;
 324 }
 325 #endif