use fixed fall-off time for k-meter

[ardour.git] / libs / ardour / vst_plugin.cc

diff --git a/libs/ardour/vst_plugin.cc b/libs/ardour/vst_plugin.cc
index 84186fd672947c118893ac1747dc4177f7c37d8b..b80a594495d8c936125d3fff58853aeb1f77a35c 100644 (file)
--- a/libs/ardour/vst_plugin.cc
+++ b/libs/ardour/vst_plugin.cc
@@ -17,8 +17,16 @@
 
 */
 
+#include <glib.h>
+#include <glib/gstdio.h>
+
+#include <glibmm/fileutils.h>
+#include <glibmm/miscutils.h>
+
+#include "pbd/floating.h"
 #include "pbd/locale_guard.h"
 #include "pbd/pathscanner.h"
+
 #include "ardour/vst_plugin.h"
 #include "ardour/vestige/aeffectx.h"
 #include "ardour/session.h"
@@ -92,10 +100,22 @@ VSTPlugin::get_parameter (uint32_t which) const
 }
 
 void 
-VSTPlugin::set_parameter (uint32_t which, float val)
+VSTPlugin::set_parameter (uint32_t which, float newval)
 {
-       _plugin->setParameter (_plugin, which, val);
-       Plugin::set_parameter (which, val);
+       float oldval = get_parameter (which);
+
+       if (PBD::floateq (oldval, newval, 1)) {
+               return;
+       }
+
+       _plugin->setParameter (_plugin, which, newval);
+       
+       float curval = get_parameter (which);
+
+       if (!PBD::floateq (curval, oldval, 1)) {
+               /* value has changed, follow rest of the notification path */
+               Plugin::set_parameter (which, newval);
+       }
 }
 
 uint32_t
@@ -177,14 +197,15 @@ int
 VSTPlugin::set_state (const XMLNode& node, int version)
 {
        LocaleGuard lg (X_("POSIX"));
+       int ret = -1;
 
        if (node.name() != state_node_name()) {
                error << _("Bad node sent to VSTPlugin::set_state") << endmsg;
                return 0;
        }
 
+#ifndef NO_PLUGIN_STATE
        XMLNode* child;
-       int ret = -1;
 
        if ((child = find_named_node (node, X_("chunk"))) != 0) {
 
@@ -217,6 +238,7 @@ VSTPlugin::set_state (const XMLNode& node, int version)
                ret = 0;
 
        }
+#endif
 
        Plugin::set_state (node, version);
        return ret;
@@ -275,10 +297,11 @@ VSTPlugin::get_parameter_descriptor (uint32_t which, ParameterDescriptor& desc)
                /* old style */
 
                char label[64];
-               label[0] = '\0';
+               /* some VST plugins expect this buffer to be zero-filled */
+               memset (label, sizeof (label), 0);
 
                _plugin->dispatcher (_plugin, effGetParamName, which, 0, label, 0);
-
+               
                desc.label = label;
                desc.integer_step = false;
                desc.lower = 0.0f;
@@ -436,11 +459,10 @@ VSTPlugin::do_save_preset (string name)
 
        t->root()->add_child_nocopy (*p);
 
-       sys::path f = ARDOUR::user_config_directory ();
-       f /= "presets";
-       f /= presets_file ();
+       std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
+       f = Glib::build_filename (f, presets_file ());
 
-       t->write (f.to_string ());
+       t->write (f);
        return uri;
 }
 
@@ -454,18 +476,26 @@ VSTPlugin::do_remove_preset (string name)
 
        t->root()->remove_nodes_and_delete (X_("label"), name);
 
-       sys::path f = ARDOUR::user_config_directory ();
-       f /= "presets";
-       f /= presets_file ();
+       std::string f = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
+       f = Glib::build_filename (f, presets_file ());
 
-       t->write (f.to_string ());
+       t->write (f);
 }
 
 string 
 VSTPlugin::describe_parameter (Evoral::Parameter param)
 {
-       char name[64] = "Unkown";
+       char name[64];
+       memset (name, sizeof (name), 0);
+
+       /* some VST plugins expect this buffer to be zero-filled */
+
        _plugin->dispatcher (_plugin, effGetParamName, param.id(), 0, name, 0);
+
+       if (name[0] == '\0') {
+               strcpy (name, _("Unknown"));
+       }
+
        return name;
 }
 
@@ -643,21 +673,22 @@ VSTPlugin::presets_tree () const
 {
        XMLTree* t = new XMLTree;
 
-       sys::path p = ARDOUR::user_config_directory ();
-       p /= "presets";
+       std::string p = Glib::build_filename (ARDOUR::user_config_directory (), "presets");
 
-       if (!is_directory (p)) {
-               create_directory (p);
+       if (!Glib::file_test (p, Glib::FILE_TEST_IS_DIR)) {
+               if (g_mkdir_with_parents (p.c_str(), 0755) != 0) {
+                       error << _("Unable to make VST presets directory") << endmsg;
+               };
        }
 
-       p /= presets_file ();
+       p = Glib::build_filename (p, presets_file ());
 
-       if (!exists (p)) {
+       if (!Glib::file_test (p, Glib::FILE_TEST_EXISTS)) {
                t->set_root (new XMLNode (X_("VSTPresets")));
                return t;
        }
 
-       t->set_filename (p.to_string ());
+       t->set_filename (p);
        if (!t->read ()) {
                delete t;
                return 0;