}
} else {
- if (has_no_audio_inputs()) {
+ uint32_t in = input_streams ().n_audio ();
+ uint32_t out = output_streams().n_audio ();
+
+ if (has_no_audio_inputs() || in == 0) {
/* silence all (audio) outputs. Should really declick
* at the transitions of "active"
*/
- uint32_t out = output_streams().n_audio ();
-
for (uint32_t n = 0; n < out; ++n) {
bufs.get_audio (n).silence (nframes);
}
- bufs.count().set_audio (out);
-
- } else {
+ } else if (out > in) {
- /* does this need to be done with MIDI? it appears not */
+ /* not active, but something has make up for any channel count increase */
- uint32_t in = input_streams ().n_audio ();
- uint32_t out = output_streams().n_audio ();
-
- if (out > in) {
-
- /* not active, but something has make up for any channel count increase */
-
- // TODO: option round-robin (n % in) or silence additional buffers ??
- for (uint32_t n = in; n < out; ++n) {
- bufs.get_audio(n).read_from(bufs.get_audio(in - 1), nframes);
- }
+ // TODO: option round-robin (n % in) or silence additional buffers ??
+ // for now , simply replicate last buffer
+ for (uint32_t n = in; n < out; ++n) {
+ bufs.get_audio(n).read_from(bufs.get_audio(in - 1), nframes);
}
-
- bufs.count().set_audio (out);
}
+
+ bufs.count().set_audio (out);
}
_active = _pending_active;
PluginInsert::Match
PluginInsert::private_can_support_io_configuration (ChanCount const & inx, ChanCount& out)
{
+ if (_plugins.empty()) {
+ return Match();
+ }
+
PluginInfoPtr info = _plugins.front()->get_info();
ChanCount in; in += inx;
midi_bypass.reset();
boost::shared_ptr<Plugin> plugin = find_plugin (_session, prop->value(), type);
+ /* treat linux and windows VST plugins equivalent if they have the same uniqueID
+ * allow to move sessions windows <> linux */
+#ifdef LXVST_SUPPORT
+ if (plugin == 0 && type == ARDOUR::Windows_VST) {
+ type = ARDOUR::LXVST;
+ plugin = find_plugin (_session, prop->value(), type);
+ }
+#endif
+
+#ifdef WINDOWS_VST_SUPPORT
+ if (plugin == 0 && type == ARDOUR::LXVST) {
+ type = ARDOUR::Windows_VST;
+ plugin = find_plugin (_session, prop->value(), type);
+ }
+#endif
+
if (plugin == 0) {
error << string_compose(
_("Found a reference to a plugin (\"%1\") that is unknown.\n"
PluginInsert::PluginControl::internal_to_interface (double val) const
{
if (_logarithmic) {
+ /* some plugins have a log-scale range "0.."
+ * ideally we'd map the range down to infinity somehow :)
+ *
+ * one solution could be to use
+ * val = exp(lower + log(range) * value);
+ * (log(val) - lower) / range)
+ * This approach would require access to the actual range (ie
+ * Plugin::ParameterDescriptor) and also require handling
+ * of unbound ranges..
+ *
+ * currently an arbitrarly low number is assumed to represnt
+ * log(0) as hot-fix solution.
+ */
if (val > 0) {
val = log (val);
} else {
- val = 0;
+ val = -8; // ~ -70dB = 20 * log10(exp(-8))
}
}
PluginInsert::PluginControl::interface_to_internal (double val) const
{
if (_logarithmic) {
- val = exp (val);
+ if (val <= -8) {
+ /* see note in PluginInsert::PluginControl::internal_to_interface() */
+ val= 0;
+ } else {
+ val = exp (val);
+ }
}
return val;