CtlrScript: added TCC code, added link flags

This commit attempts to compile and run the d2 script as prototyped
outside of Luppp.

src/CMakeLists.txt

@@ -65,6 +65,7 @@ add_executable (luppp version.hxx ${sources} )
 
 
 # Linking
+target_link_libraries( luppp "-ltcc -ldl"            )
 target_link_libraries( luppp ${JACK_LIBRARIES}       )
 target_link_libraries( luppp ${LIBLO_LIBRARIES}      )
 target_link_libraries( luppp ${NTK_LIBRARIES}        )

src/controller/ctlrscript.cxx

@@ -1,17 +1,17 @@
 /*
  * Author: Harry van Haaren 2016
  *         harryhaaren@gmail.com
- * 
+ *
  *  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 3 of the License, or
  *  (at your option) any later version.
- *  
+ *
  *  This program 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, see <http://www.gnu.org/licenses/>.
  */
@@ -26,14 +26,75 @@
 
 #include "../eventhandler.hxx"
 
+#include "libtcc.h"
+
 extern Jack* jack;
 
+static void error_func(void *opaque, const char *msg)
+{
+	printf("TCC ERROR: %s\n", msg);
+}
+
+static void error(const char *msg)
+{
+	printf("%s\n", msg);
+}
+
+#warning TODO: Externalize this to a header which the controllers should\
+	include to understand the event types, and functions for sending
+struct event_t {
+	uint32_t type;
+	uint32_t size;
+};
+
+
 CtlrScript::CtlrScript(std::string filename) :
-  Controller()
+	Controller()
 {
 	printf("%s, attempting to compile %s\n", __func__, filename.c_str());
+	TCCState *s;
 
-#warning WIP HERE, add TCC libs, and attempt to load/compile filename
+	s = tcc_new();
+	if(!s)
+		error("failed to create tcc context\n");
+
+	tcc_set_error_func(s, 0x0, error_func);
+	tcc_set_options(s, "-g");
+	tcc_set_output_type(s, TCC_OUTPUT_MEMORY);
+
+	int ret = tcc_add_file(s, filename.c_str());
+	if(ret < 0) {
+		printf("gracefully handling error now... \n");
+		return;
+	}
+
+	program = malloc(tcc_relocate(s, NULL));
+	if(!program)
+		error("failed to alloc mem for program\n");
+	ret = tcc_relocate(s, program);
+	if(ret < 0)
+		error("failed to relocate code to program memory\n");
+
+	poll = (ctlr_poll)tcc_get_symbol(s, "d2_poll");
+	if(!poll)
+		error("failed to get de poll\n");
+
+	handle = (void (*)(void*))tcc_get_symbol(s, "d2_handle");
+	if(!handle)
+		error("failed to get d2 handle\n");
+
+	tcc_delete(s);
+
+	uint32_t iter = 0;
+	iter = poll(iter);
+
+	struct event_t ev = { 0, 1 };
+	if(iter == 1)
+		ev.type = 1;
+	handle(&ev);
+
+#warning FIXME: Free program when needed
+	//free(program);
 }
 
 void CtlrScript::bpm(int bpm)

src/controller/ctlrscript.hxx

@@ -1,17 +1,17 @@
 /*
  * Author: Harry van Haaren 2013
  *         harryhaaren@gmail.com
- * 
+ *
  *  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 3 of the License, or
  *  (at your option) any later version.
- *  
+ *
  *  This program 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, see <http://www.gnu.org/licenses/>.
  */
@@ -39,14 +39,30 @@
  * however this would also require significant effort, which does not
  * seem worth the time at the moment.
  */
+
+/* These typedefs are for the poll and handle events of the scripted
+ * controller, to receieve and send events as needed */
+typedef int (*ctlr_poll)(int);
+typedef void (*ctlr_handle)(void *);
+
 class CtlrScript : public Controller
 {
-  public:
-    CtlrScript(std::string filename);
-    
-    std::string getName(){return "CtlrScript";}
-    
-    void bpm(int bpm);
+public:
+	CtlrScript(std::string filename);
+
+	std::string getName()
+	{
+		return "CtlrScript";
+	}
+
+	void bpm(int bpm);
+
+private:
+	void *program;
+	ctlr_poll poll;
+	ctlr_handle handle;
+
+
 };
 
 #endif // LUPPP_CONTROLLER_SCRIPT_H

src/jack.cxx

@@ -39,6 +39,7 @@
 
 #include "audiobuffer.hxx"
 #include "eventhandler.hxx"
+#include "controller/ctlrscript.hxx"
 #include "controller/genericmidi.hxx"
 #include "controller/guicontroller.hxx"
 
@@ -268,6 +269,11 @@ Jack::Jack( std::string name ) :
     LUPPP_ERROR("%s","Error creating LupppGUI Controller instance");
   }
   
+  Controller* cs = new CtlrScript("test.c");
+  if(!cs) {
+    LUPPP_ERROR("Error creating CtlrScript instance\n");
+  }
+  
   // call into the GUI, telling it to register default controllers
   gui->setupMidiControllers();