research.m1stereo.tv/gitweb/ - melted/blob - src/modules/jackrack/jack_rack.c

   1 /*
   2  * JACK Rack
   3  *
   4  * Original:
   5  * Copyright (C) Robert Ham 2002, 2003 (node@users.sourceforge.net)
   6  *
   7  * Modification for MLT:
   8  * Copyright (C) 2004 Ushodaya Enterprises Limited
   9  * Author: Dan Dennedy <dan@dennedy.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <strings.h>
  29 #include <string.h>
  30 #include <ctype.h>
  31
  32 #include <ladspa.h>
  33 #include <libxml/tree.h>
  34
  35 #include "jack_rack.h"
  36 #include "lock_free_fifo.h"
  37 #include "plugin_settings.h"
  38
  39 #ifndef _
  40 #define _(x) x
  41 #endif
  42 #define _x (const xmlChar*)
  43 #define _s (const char*)
  44
  45 jack_rack_t *
  46 jack_rack_new (const char * client_name, unsigned long channels)
  47 {
  48   jack_rack_t *rack;
  49
  50   rack = g_malloc (sizeof (jack_rack_t));
  51   rack->saved_plugins  = NULL;
  52   rack->channels       = channels;
  53   rack->procinfo = process_info_new (client_name, channels, FALSE, FALSE);
  54   if (!rack->procinfo) {
  55     g_free (rack);
  56     return NULL;
  57   }
  58   rack->plugin_mgr = plugin_mgr_new ();
  59   plugin_mgr_set_plugins (rack->plugin_mgr, channels);
  60
  61   return rack;
  62 }
  63
  64
  65 void
  66 jack_rack_destroy (jack_rack_t * jack_rack)
  67 {
  68   process_quit (jack_rack->procinfo);
  69   plugin_mgr_destroy (jack_rack->plugin_mgr);
  70   process_info_destroy (jack_rack->procinfo);
  71   g_slist_free (jack_rack->saved_plugins);
  72   g_free (jack_rack);
  73 }
  74
  75 plugin_t *
  76 jack_rack_instantiate_plugin (jack_rack_t * jack_rack, plugin_desc_t * desc)
  77 {
  78   plugin_t * plugin;
  79
  80   /* check whether or not the plugin is RT capable and confirm with the user if it isn't */
  81   if (!LADSPA_IS_HARD_RT_CAPABLE(desc->properties)) {
  82     fprintf (stderr, "Plugin not RT capable. The plugin '%s' does not describe itself as being capable of real-time operation. You may experience drop outs or jack may even kick us out if you use it.\n",
  83                desc->name);
  84   }
  85
  86   /* create the plugin */
  87   plugin = plugin_new (desc, jack_rack);
  88
  89   if (!plugin) {
  90    fprintf (stderr, "Error loading file plugin '%s' from file '%s'\n",
  91                desc->name, desc->object_file);
  92   }
  93
  94   return plugin;
  95 }
  96
  97
  98 void
  99 jack_rack_add_saved_plugin (jack_rack_t * jack_rack, saved_plugin_t * saved_plugin)
 100 {
 101   plugin_t * plugin = jack_rack_instantiate_plugin (jack_rack, saved_plugin->settings->desc);
 102   if (!plugin)
 103     return;
 104   jack_rack->saved_plugins = g_slist_append (jack_rack->saved_plugins, saved_plugin);
 105   process_add_plugin (jack_rack->procinfo, plugin);
 106   jack_rack_add_plugin (jack_rack, plugin);
 107 }
 108
 109
 110 void
 111 jack_rack_add_plugin (jack_rack_t * jack_rack, plugin_t * plugin)
 112 {
 113   saved_plugin_t * saved_plugin = NULL;
 114   GSList * list;
 115   unsigned long control, channel;
 116   LADSPA_Data value;
 117   guint copy;
 118
 119   /* see if there's any saved settings that match the plugin id */
 120   for (list = jack_rack->saved_plugins; list; list = g_slist_next (list))
 121     {
 122       saved_plugin = list->data;
 123
 124       if (saved_plugin->settings->desc->id == plugin->desc->id)
 125         {
 126           /* process the settings! */
 127           jack_rack->saved_plugins = g_slist_remove (jack_rack->saved_plugins, saved_plugin);
 128           break;
 129         }
 130       saved_plugin = NULL;
 131     }
 132
 133   /* initialize plugin parameters */
 134   plugin->enabled = settings_get_enabled (saved_plugin->settings);
 135   plugin->wet_dry_enabled = settings_get_wet_dry_enabled (saved_plugin->settings);
 136
 137   for (control = 0; control < saved_plugin->settings->desc->control_port_count; control++)
 138     for (copy = 0; copy < plugin->copies; copy++)
 139       {
 140         value = settings_get_control_value (saved_plugin->settings, copy, control);
 141         plugin->holders[copy].control_memory[control] = value;
 142 //printf("setting control value %s (%d) = %f\n", saved_plugin->settings->desc->port_names[control], copy, value);
 143 //        lff_write (plugin->holders[copy].ui_control_fifos + control, &value);
 144       }
 145   if (plugin->wet_dry_enabled)
 146     for (channel = 0; channel < jack_rack->channels; channel++)
 147       {
 148         value = settings_get_wet_dry_value (saved_plugin->settings, channel);
 149         plugin->wet_dry_values[channel] = value;
 150 //printf("setting wet/dry value %d = %f\n", channel, value);
 151 //        lff_write (plugin->wet_dry_fifos + channel, &value);
 152       }
 153 }
 154
 155
 156 static void
 157 saved_rack_parse_plugin (jack_rack_t * jack_rack, saved_rack_t * saved_rack, saved_plugin_t * saved_plugin,
 158                          const char * filename, xmlNodePtr plugin)
 159 {
 160   plugin_desc_t * desc;
 161   settings_t * settings = NULL;
 162   xmlNodePtr node;
 163   xmlNodePtr sub_node;
 164   xmlChar *content;
 165   unsigned long num;
 166   unsigned long control = 0;
 167
 168   for (node = plugin->children; node; node = node->next)
 169     {
 170       if (xmlStrcmp (node->name, _x("id")) == 0)
 171         {
 172           content = xmlNodeGetContent (node);
 173           num = strtoul (_s(content), NULL, 10);
 174           xmlFree (content);
 175
 176           desc = plugin_mgr_get_any_desc (jack_rack->plugin_mgr, num);
 177           if (!desc)
 178             {
 179               fprintf (stderr, _("The file '%s' contains an unknown plugin with ID '%ld'; skipping\n"), filename, num);
 180               return;
 181             }
 182
 183           settings = settings_new (desc, saved_rack->channels, saved_rack->sample_rate);
 184         }
 185       else if (xmlStrcmp (node->name, _x("enabled")) == 0)
 186         {
 187           content = xmlNodeGetContent (node);
 188           settings_set_enabled (settings, xmlStrcmp (content, _x("true")) == 0 ? TRUE : FALSE);
 189           xmlFree (content);
 190         }
 191       else if (xmlStrcmp (node->name, _x("wet_dry_enabled")) == 0)
 192         {
 193           content = xmlNodeGetContent (node);
 194           settings_set_wet_dry_enabled (settings, xmlStrcmp (content, _x("true")) == 0 ? TRUE : FALSE);
 195           xmlFree (content);
 196         }
 197       else if (xmlStrcmp (node->name, _x("wet_dry_locked")) == 0)
 198         {
 199           content = xmlNodeGetContent (node);
 200           settings_set_wet_dry_locked (settings, xmlStrcmp (content, _x("true")) == 0 ? TRUE : FALSE);
 201           xmlFree (content);
 202         }
 203       else if (xmlStrcmp (node->name, _x("wet_dry_values")) == 0)
 204         {
 205           unsigned long channel = 0;
 206
 207           for (sub_node = node->children; sub_node; sub_node = sub_node->next)
 208             {
 209               if (xmlStrcmp (sub_node->name, _x("value")) == 0)
 210                 {
 211                   content = xmlNodeGetContent (sub_node);
 212                   settings_set_wet_dry_value (settings, channel, strtod (_s(content), NULL));
 213                   xmlFree (content);
 214
 215                   channel++;
 216                 }
 217             }
 218         }
 219       else if (xmlStrcmp (node->name, _x("lockall")) == 0)
 220         {
 221           content = xmlNodeGetContent (node);
 222           settings_set_lock_all (settings, xmlStrcmp (content, _x("true")) == 0 ? TRUE : FALSE);
 223           xmlFree (content);
 224         }
 225       else if (xmlStrcmp (node->name, _x("controlrow")) == 0)
 226         {
 227           gint copy = 0;
 228
 229           for (sub_node = node->children; sub_node; sub_node = sub_node->next)
 230             {
 231               if (xmlStrcmp (sub_node->name, _x("lock")) == 0)
 232                 {
 233                   content = xmlNodeGetContent (sub_node);
 234                   settings_set_lock (settings, control, xmlStrcmp (content, _x("true")) == 0 ? TRUE : FALSE);
 235                   xmlFree (content);
 236                 }
 237               else if (xmlStrcmp (sub_node->name, _x("value")) == 0)
 238                 {
 239                   content = xmlNodeGetContent (sub_node);
 240                   settings_set_control_value (settings, copy, control, strtod (_s(content), NULL));
 241                   xmlFree (content);
 242                   copy++;
 243                 }
 244             }
 245
 246           control++;
 247         }
 248     }
 249
 250   if (settings)
 251     saved_plugin->settings = settings;
 252 }
 253
 254 static void
 255 saved_rack_parse_jackrack (jack_rack_t * jack_rack, saved_rack_t * saved_rack, const char * filename, xmlNodePtr jackrack)
 256 {
 257   xmlNodePtr node;
 258   xmlChar *content;
 259   saved_plugin_t * saved_plugin;
 260
 261   for (node = jackrack->children; node; node = node->next)
 262     {
 263       if (xmlStrcmp (node->name, _x("channels")) == 0)
 264         {
 265           content = xmlNodeGetContent (node);
 266           saved_rack->channels = strtoul (_s(content), NULL, 10);
 267           xmlFree (content);
 268         }
 269       else if (xmlStrcmp (node->name, _x("samplerate")) == 0)
 270         {
 271           content = xmlNodeGetContent (node);
 272           saved_rack->sample_rate = strtoul (_s(content), NULL, 10);
 273           xmlFree (content);
 274         }
 275       else if (xmlStrcmp (node->name, _x("plugin")) == 0)
 276         {
 277           saved_plugin = g_malloc0 (sizeof (saved_plugin_t));
 278           saved_rack->plugins = g_slist_append (saved_rack->plugins, saved_plugin);
 279           saved_rack_parse_plugin (jack_rack, saved_rack, saved_plugin, filename, node);
 280         }
 281     }
 282 }
 283
 284 static saved_rack_t *
 285 saved_rack_new (jack_rack_t * jack_rack, const char * filename, xmlDocPtr doc)
 286 {
 287   xmlNodePtr node;
 288   saved_rack_t *saved_rack;
 289
 290   /* create the saved rack */
 291   saved_rack = g_malloc (sizeof (saved_rack_t));
 292   saved_rack->plugins = NULL;
 293   saved_rack->sample_rate = 48000;
 294   saved_rack->channels = 2;
 295
 296   for (node = doc->children; node; node = node->next)
 297     {
 298       if (xmlStrcmp (node->name, _x("jackrack")) == 0)
 299         saved_rack_parse_jackrack (jack_rack, saved_rack, filename, node);
 300     }
 301
 302   return saved_rack;
 303 }
 304
 305 static void
 306 saved_rack_destroy (saved_rack_t * saved_rack)
 307 {
 308   GSList * list;
 309
 310   for (list = saved_rack->plugins; list; list = g_slist_next (list))
 311     settings_destroy (((saved_plugin_t *) list->data)->settings);
 312   g_slist_free (saved_rack->plugins);
 313   g_free (saved_rack);
 314 }
 315
 316
 317 int
 318 jack_rack_open_file (jack_rack_t * jack_rack, const char * filename)
 319 {
 320   xmlDocPtr doc;
 321   saved_rack_t * saved_rack;
 322   GSList * list;
 323   saved_plugin_t * saved_plugin;
 324
 325   doc = xmlParseFile (filename);
 326   if (!doc)
 327     {
 328       fprintf (stderr, _("Could not parse file '%s'\n"), filename);
 329       return 1;
 330     }
 331
 332   if (xmlStrcmp ( ((xmlDtdPtr)doc->children)->name, _x("jackrack")) != 0)
 333     {
 334       fprintf (stderr, _("The file '%s' is not a JACK Rack settings file\n"), filename);
 335       return 1;
 336     }
 337
 338   saved_rack = saved_rack_new (jack_rack, filename, doc);
 339   xmlFreeDoc (doc);
 340
 341   if (!saved_rack)
 342     return 1;
 343
 344   for (list = saved_rack->plugins; list; list = g_slist_next (list))
 345     {
 346       saved_plugin = list->data;
 347
 348       settings_set_sample_rate (saved_plugin->settings, sample_rate);
 349
 350       jack_rack_add_saved_plugin (jack_rack, saved_plugin);
 351     }
 352
 353   saved_rack_destroy (saved_rack);
 354
 355   return 0;
 356 }
 357
 358
 359 /* EOF */