Data generation.

Pretty/consistent plugin symbol names.


git-svn-id: http://svn.drobilla.net/lad/mda-lv2@1322 a436a847-0d15-0410-975c-d299462d15a1

3 files changed, 174 insertions, 24 deletions

diff --git a/lvz/audioeffectx.h b/lvz/audioeffectx.h
index f2f696b..07a6302 100644
--- a/lvz/audioeffectx.h
+++ b/lvz/audioeffectx.h
@@ -66,38 +66,48 @@ class AudioEffect {
 class AudioEffectX : public AudioEffect {
 public:
 	AudioEffectX(audioMasterCallback audioMaster, int progs, int params)
-		: curProgram(0)
+		: uniqueID("NIL")
+		, URI("NIL")
+		, curProgram(0)
 		, numPrograms(progs)
 		, numInputs(0)
 		, numOutputs(0)
+		, sampleRate(44100)
 	{
 	}
   
-	float getSampleRate() { return sampleRate; }
-	uint32_t getNumInputs() { return numInputs; }		  
-	uint32_t getNumOutputs() { return numOutputs; }
-	void setNumInputs(uint32_t num) { numInputs = num; }
-	void setNumOutputs(uint32_t num) { numOutputs = num;}
-	void setUniqueID(const char* id) {}
-	void setSampleRate(float rate) { sampleRate = rate; }
+	const char* getURI()        { return URI; }
+	const char* getUniqueID()   { return uniqueID; }
+	float       getSampleRate() { return sampleRate; }
+	uint32_t    getNumInputs()  { return numInputs; }		  
+	uint32_t    getNumOutputs() { return numOutputs; }
+	
+	virtual bool getProductString(char* text) = 0;
+
 	void canMono() {}
-	void wantEvents() {}
 	void canProcessReplacing() {}
 	void isSynth() {}
-	void suspend() {}
+	void process(float **inputs, float **outputs, uint32_t nframes) {}
 	void setBlockSize(uint32_t blockSize) {}
+	void setNumInputs(uint32_t num) { numInputs = num; }
+	void setNumOutputs(uint32_t num) { numOutputs = num;}
 	void setParameter(uint32_t index, float value) {}
-
-	void process(float **inputs, float **outputs, uint32_t nframes) {}
+	void setSampleRate(float rate) { sampleRate = rate; }
+	void setUniqueID(const char* id) { uniqueID = id; }
+	void setURI(const char* uri) { URI = uri; }
+	void suspend() {}
+	void wantEvents() {}
 
 protected:
-	 uint32_t curProgram;
-	 uint32_t numPrograms;
-	 uint32_t numInputs;
-	 uint32_t numOutputs;
-	 float    sampleRate;
-
-	 AEffGUIEditor* editor;
+	const char* uniqueID;
+	const char* URI;
+	uint32_t curProgram;
+	uint32_t numPrograms;
+	uint32_t numInputs;
+	uint32_t numOutputs;
+	float    sampleRate;
+
+	AEffGUIEditor* editor;
 };
 
 #endif // __lvz_audioeffectx_h
diff --git a/lvz/gendata.cpp b/lvz/gendata.cpp
new file mode 100644
index 0000000..f1337a1
--- /dev/null
+++ b/lvz/gendata.cpp
@@ -0,0 +1,126 @@
+/* LVZ - A C++ interface for writing LV2 plugins.
+ * Copyright (C) 2008 Dave Robillard <http://drobilla.net>
+ *  
+ * This library 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.
+ *
+ * This library is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include <iostream>
+#include <fstream>
+#include <dlfcn.h>
+#include "audioeffectx.h"
+
+using namespace std;
+
+typedef AudioEffectX* (*new_effect_func)();
+typedef AudioEffectX* (*plugin_uri_func)();
+
+// VST is so incredibly awful.  Just.. wow.
+#define MAX_NAME_LENGTH 1024
+char name[MAX_NAME_LENGTH];
+
+#define NS_LV2CORE "http://lv2plug.in/ns/lv2core#"
+
+void
+write_data(AudioEffectX* effect, const char* lib_file_name)
+{
+	string data_file_name = lib_file_name;
+	data_file_name = data_file_name.substr(0, data_file_name.find_last_of("."));
+	data_file_name += ".ttl";
+	
+	//ostream& os = cout;
+	fstream os(data_file_name.c_str(), ios::out);
+	effect->getProductString(name);
+	
+	os << "@prefix : <http://lv2plug.in/ns/lv2core#> ." << endl;
+	os << "@prefix doap: <http://usefulinc.com/ns/doap#> ." << endl << endl;
+	os << "<" << effect->getURI() << ">" << endl;
+	os << "\t:symbol \"" << effect->getUniqueID() << "\" ;" << endl;
+	os << "\tdoap:name \"" << name << "\"";
+
+	if (effect->getNumInputs() + effect->getNumOutputs() == 0)
+		os << " ." << endl;
+	else
+		os << " ;" << endl;
+	
+	for (uint32_t i = 0; i < effect->getNumInputs(); ++i) {
+		if (i == 0)
+			os << "\t:port [" << endl;
+
+		os << "\t\ta :InputPort, :AudioPort ;" << endl;
+		os << "\t\t:index" << " " << i << " ;" << endl;
+
+		if (i == effect->getNumInputs() - 1) {
+			os << "\t] " << (effect->getNumOutputs() ? ";" : ".") << endl;
+		} else {
+			os << "\t] , [" << endl;
+		}
+	}
+	
+	for (uint32_t i = 0; i < effect->getNumOutputs(); ++i) {
+		if (i == 0)
+			os << "\t:port [" << endl;
+
+		os << "\t\ta :OutputPort, :AudioPort ;" << endl;
+		os << "\t\t:index" << " " << effect->getNumInputs() + i << " ;" << endl;
+
+		if (i == effect->getNumInputs() - 1) {
+			os << "\t] ." << endl;
+		} else {
+			os << "\t] , [" << endl;
+		}
+	}
+
+	os.close();
+	cout << "Wrote " << data_file_name << endl;
+}
+
+
+int
+main(int argc, char** argv)
+{
+	if (argc == 0) {
+		cout << "Usage: gendata [PLUGINLIB1] [PLUGINLIB2]..." << endl;
+		cout << "Each argument is a path to a LVZ plugin library." << endl;
+		cout << "For each library an LV2 data file with the same name" << endl;
+		cout << "will be output containing the data for that plugin." << endl;
+		return 1;
+	}
+
+	new_effect_func constructor = NULL;
+	AudioEffectX*   effect      = NULL; 
+
+	for (int i = 1; i < argc; ++i) {
+		void* handle = dlopen(argv[i], RTLD_NOW);
+		if (handle == NULL) {
+			cerr << "ERROR: " << argv[i] << " is not a shared library, ignoring" << endl;
+			continue;
+		}
+
+		constructor = (new_effect_func)dlsym(handle, "lvz_new_audioeffectx");
+		if (constructor == NULL) {
+			dlclose(handle);
+			cerr << "ERROR: " << argv[i] << " is not an LVZ plugin library, ignoring" << endl;
+			continue;
+		}
+
+		effect = constructor();
+		write_data(effect, argv[i]);
+
+		dlclose(handle);
+	}
+	
+	return 0;
+}
+
diff --git a/lvz/wrapper.cpp b/lvz/wrapper.cpp
index 5916b13..14f73a9 100644
--- a/lvz/wrapper.cpp
+++ b/lvz/wrapper.cpp
@@ -16,13 +16,15 @@
  * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 
-#ifndef PLUGIN_URI
-#error "This file requires PLUGIN_URI to be defined"
-#endif
-
 #ifndef PLUGIN_CLASS
 #error "This file requires PLUGIN_CLASS to be defined"
 #endif
+#ifndef PLUGIN_URI_PREFIX
+#error "This file requires PLUGIN_URI_PREFIX to be defined"
+#endif
+#ifndef PLUGIN_URI_SUFFIX
+#error "This file requires PLUGIN_URI_SUFFIX to be defined"
+#endif
 
 #include <stdlib.h>
 #include "audioeffectx.h"
@@ -60,6 +62,7 @@ mda_instantiate(const LV2_Descriptor*    descriptor,
                 const LV2_Feature*const* features)
 {
 	PLUGIN_CLASS* effect = new PLUGIN_CLASS(NULL);
+	effect->setURI(PLUGIN_URI_PREFIX PLUGIN_URI_SUFFIX);
 	effect->setSampleRate(rate);
 	
 	MDAPlugin* plugin = (MDAPlugin*)malloc(sizeof(MDAPlugin));
@@ -87,7 +90,7 @@ init_descriptor()
 {
 	mda_descriptor = (LV2_Descriptor*)malloc(sizeof(LV2_Descriptor));
 
-	mda_descriptor->URI = PLUGIN_URI;
+	mda_descriptor->URI = PLUGIN_URI_PREFIX PLUGIN_URI_SUFFIX;
 	mda_descriptor->activate = NULL;
 	mda_descriptor->cleanup = mda_cleanup;
 	mda_descriptor->connect_port = mda_connect_port;
@@ -112,4 +115,15 @@ lv2_descriptor(uint32_t index)
 	}
 }
 
+
+LV2_SYMBOL_EXPORT
+AudioEffectX*
+lvz_new_audioeffectx()
+{
+	PLUGIN_CLASS* effect = new PLUGIN_CLASS(NULL);
+	effect->setURI(PLUGIN_URI_PREFIX PLUGIN_URI_SUFFIX);
+	return effect;
+}
+
+
 } // extern "C"