diff transform/PluginTransform.cpp @ 27:61259228d029

* More to do with passing around step/blocksize etc from plugin dialog to
  plugins.  Still some puzzling unresolved details.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/transform/PluginTransform.cpp	Tue Sep 19 14:37:06 2006 +0000
@@ -0,0 +1,93 @@
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Sonic Visualiser
+    An audio file viewer and annotation editor.
+    Centre for Digital Music, Queen Mary, University of London.
+    This file copyright 2006 Chris Cannam.
+   
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#include "PluginTransform.h"
+
+PluginTransform::PluginTransform(Model *inputModel,
+				 const ExecutionContext &context) :
+    Transform(inputModel),
+    m_context(context)
+{
+}
+
+PluginTransform::ExecutionContext::ExecutionContext(int _c, size_t _bs) :
+    channel(_c),
+    domain(Vamp::Plugin::TimeDomain),
+    stepSize(_bs ? _bs : 1024),
+    blockSize(_bs ? _bs : 1024),
+    windowType(HanningWindow)
+{
+}
+
+PluginTransform::ExecutionContext::ExecutionContext(int _c, size_t _ss,
+                                                    size_t _bs, WindowType _wt) :
+    channel(_c),
+    domain(Vamp::Plugin::FrequencyDomain),
+    stepSize(_ss ? _ss : (_bs ? _bs / 2 : 512)),
+    blockSize(_bs ? _bs : 1024),
+    windowType(_wt)
+{
+}
+
+PluginTransform::ExecutionContext::ExecutionContext(int _c,
+                                                    const Vamp::PluginBase *_plugin) :
+    channel(_c),
+    domain(Vamp::Plugin::TimeDomain),
+    stepSize(0),
+    blockSize(0),
+    windowType(HanningWindow)
+{
+    makeConsistentWithPlugin(_plugin);
+}
+
+bool
+PluginTransform::ExecutionContext::operator==(const ExecutionContext &c)
+{
+    return (c.channel == channel &&
+            c.domain == domain &&
+            c.stepSize == stepSize &&
+            c.blockSize == blockSize &&
+            c.windowType == windowType);
+}
+
+void
+PluginTransform::ExecutionContext::makeConsistentWithPlugin(const Vamp::PluginBase *_plugin)
+{
+    const Vamp::Plugin *vp = dynamic_cast<const Vamp::Plugin *>(_plugin);
+
+    if (!vp) {
+        domain = Vamp::Plugin::TimeDomain;
+        if (!stepSize) {
+            if (!blockSize) blockSize = 1024;
+            stepSize = blockSize;
+        } else {
+            if (!blockSize) blockSize = stepSize;
+        }
+    } else {
+        domain = vp->getInputDomain();
+        if (!stepSize) stepSize = vp->getPreferredStepSize();
+        if (!blockSize) blockSize = vp->getPreferredBlockSize();
+        if (!blockSize) blockSize = 1024;
+        if (!stepSize) {
+            if (domain == Vamp::Plugin::FrequencyDomain) {
+                stepSize = blockSize/2;
+            } else {
+                stepSize = blockSize;
+            }
+        }
+    }
+}
+    
+