map01bf@620: // pyadbmodule.c
map01bf@620: // 
map01bf@620: // the internal portion of the wrapper for audio
map01bf@620: // see pyadb.py for the public classes
map01bf@620: // 
map01bf@620: // Created by Benjamin Fields on 2009-09-04.
map01bf@620: // Copyright (c) 2009 Goldsmith University of London. All rights reserved.
map01bf@620: // 	
map01bf@620: #include <fcntl.h>
map01bf@620: #include "Python.h"
map01bf@620: #include "audioDB_API.h"
map01bf@620: #include "numpy/arrayobject.h"
map01bf@620: 
map01bf@620: static void _pyadb_close(void *ptr);
map01bf@620: 
map01bf@620: 
map01bf@620: /* create a new database */
map01bf@620: /* returns a struct or NULL on failure */
map01bf@620: /* api call: */
map01bf@620: /* adb_ptr audiodb_create(const char *path, unsigned datasize, unsigned ntracks, unsigned datadim);*/
map01bf@620: PyObject * _pyadb_create(PyObject *self, PyObject *args)
map01bf@620: {
map01bf@620: 	unsigned datasize, ntracks, datadim;
map01bf@620: 	const char *path;
map01bf@620: 	int ok;
map01bf@620: 	adb_ptr new_database;
map01bf@620: 	ok = PyArg_ParseTuple(args, "sIII", &path, &datasize, &ntracks, &datadim);
map01bf@620: 	if (!ok) return 0;
map01bf@620: 	new_database = audiodb_create(path, datasize, ntracks, datadim);
map01bf@620: 	if (!new_database) return 0;
map01bf@620: 	
map01bf@620: 	return PyCObject_FromVoidPtr( new_database, _pyadb_close);	
map01bf@620: }
map01bf@620: 
map01bf@620: /* open an existing database */
map01bf@620: /* returns a struct or NULL on failure */
map01bf@620: /* flags expects fcntl flags concerning the opening mode */
map01bf@620: /* api call: */
map01bf@620: // adb_ptr audiodb_open(const char *path, int flags);
map01bf@620: PyObject * _pyadb_open(PyObject *self, PyObject *args)
map01bf@620: {
map01bf@620: 	const char *path;
map01bf@620: 	char mode;
map01bf@620: 	int ok;//in python layer need to translate boolean flags to byte mask
map01bf@620: 	adb_ptr fresh_database;
map01bf@620: 	ok = PyArg_ParseTuple(args, "sc", &path, &mode);
map01bf@620: 	if (!ok) return 0;
map01bf@620: 	if (mode == 'r'){
map01bf@620: 		fresh_database = audiodb_open(path, O_RDONLY);
map01bf@620: 	}else if (mode == 'w'){
map01bf@620: 		fresh_database = audiodb_open(path, O_RDWR);
map01bf@620: 	}else{
map01bf@620: 		PyErr_SetString(PyExc_ValueError,
map01bf@620: 		"mode must be either \'r\' or \'w\'.  It appears to be something else.");
map01bf@620: 		return 0;
map01bf@620: 	}
map01bf@620: 	if (!fresh_database) return 0;
map01bf@620: 	
map01bf@620: 	return PyCObject_FromVoidPtr( fresh_database, _pyadb_close);	
map01bf@620: }
map01bf@620: 
map01bf@620: /* database status */  
map01bf@620: /* api call: */
map01bf@620: // int audiodb_status(adb_ptr mydb, adb_status_ptr status);
map01bf@620: PyObject * _pyadb_status(PyObject *self, PyObject *args)
map01bf@620: {
map01bf@620: 	adb_ptr check_db;
map01bf@620: 	adb_status_ptr status;
map01bf@620: 	int flags, ok;
map01bf@620: 	PyObject * incoming = 0;
map01bf@620: 	status = (adb_status_ptr)malloc(sizeof(struct adbstatus));
map01bf@620: 	
map01bf@620: 	ok = PyArg_ParseTuple(args, "O", &incoming);
map01bf@620: 	if (!ok) return 0;
map01bf@620: 	check_db = (adb_ptr)PyCObject_AsVoidPtr(incoming);
map01bf@620: 	
map01bf@620: 	
map01bf@620: 	flags = audiodb_status(check_db, status);
map01bf@620: 	return Py_BuildValue("IIIIILL", status->numFiles, 
map01bf@620: 									status->dim, 
map01bf@620: 									status->dudCount, 
map01bf@620: 									status->nullCount, 
map01bf@620: 									status->flags, 
map01bf@620: 									status->length, 
map01bf@620: 									status->data_region_size);
map01bf@620: 
map01bf@620: }
map01bf@620: 
map01bf@620: /*engage l2norm in the referenced db*/
map01bf@620: /*api call:*/
map01bf@620: //int audiodb_l2norm(adb_ptr mydb);
map01bf@620: PyObject * _pyadb_l2norm(PyObject *self, PyObject *args)
map01bf@620: {
map01bf@620: 	adb_ptr current_db;
map01bf@620: 	int ok;
map01bf@620: 	PyObject * incoming = 0;
map01bf@620: 	
map01bf@620: 	ok = PyArg_ParseTuple(args, "O", &incoming);
map01bf@620: 	if (!ok) return 0;
map01bf@620: 	current_db = (adb_ptr)PyCObject_AsVoidPtr(incoming);
map01bf@620: 	
map01bf@620: 	ok = audiodb_l2norm(current_db);
map01bf@620: 	return Py_BuildValue("i", ok);
map01bf@620: 	
map01bf@620: }
map01bf@620: 
map01bf@620: /*engage power thresholding in the referenced db*/
map01bf@620: /*api call:*/
map01bf@620: // int audiodb_power(adb_ptr mydb);
map01bf@620: PyObject * _pyadb_power(PyObject *self, PyObject *args)
map01bf@620: {
map01bf@620: 	adb_ptr current_db;
map01bf@620: 	int ok;
map01bf@620: 	PyObject * incoming = 0;
map01bf@620: 	
map01bf@620: 	ok = PyArg_ParseTuple(args, "O", &incoming);
map01bf@620: 	if (!ok) return 0;
map01bf@620: 	current_db = (adb_ptr)PyCObject_AsVoidPtr(incoming);
map01bf@620: 	
map01bf@620: 	ok = audiodb_power(current_db);
map01bf@620: 	return Py_BuildValue("i", ok);
map01bf@620: 	
map01bf@620: }
map01bf@620: 
map01bf@620: /* close a database */
map01bf@620: /* api call: */
map01bf@620: // void audiodb_close(adb_ptr db);
map01bf@620: static void _pyadb_close(void *ptr)
map01bf@620: {
map01bf@620: 	adb_ptr stale_database;
map01bf@620: 	stale_database = (adb_ptr)ptr; 
map01bf@620: 	
map01bf@620: 	audiodb_close(stale_database);
map01bf@620: }
map01bf@620: 
map01bf@620: static PyMethodDef _pyadbMethods[] = 
map01bf@620: {
map01bf@620: 	{ "_pyadb_create", _pyadb_create, METH_VARARGS, 
map01bf@620: 	  "_pyadb_create(string path, unsigned datasize, unsigned ntracks, unsigned datadim)->adb object"},
map01bf@620: 	{ "_pyadb_open", _pyadb_open, METH_VARARGS, 
map01bf@620: 	  "_pyadb_open(string path, [\'r\'|\'w\'])->adb object\nNote that specifing \'w\' opens the file in read and write mode.  \
map01bf@620: 	There is currently no way to open in write only."},
map01bf@620: 	{ "_pyadb_status", _pyadb_status, METH_VARARGS,
map01bf@620: 	  "_status(adb_ptr)->(numFiles, dims, dudCount, nullCount, flags, length, data_region_size)"},
map01bf@620: 	{ "_pyadb_l2norm", _pyadb_l2norm, METH_VARARGS,
map01bf@620: 	  "_pyadb_l2norm(adb_ptr)->int return code (0 for sucess)"},
map01bf@620: 	{ "_pyadb_power", _pyadb_power, METH_VARARGS,
map01bf@620: 	  "_pyadb_power(adb_ptr)->int return code (0 for sucess)"},
map01bf@620: 	{NULL,NULL, 0, NULL}
map01bf@620: };
map01bf@620: 
map01bf@620: void init_pyadb()
map01bf@620: {
map01bf@620: 	Py_InitModule3("_pyadb", _pyadbMethods, "internal c bindings for audioDB.  Use pyadb for pythonic access to adb (when it exists).");
map01bf@620: 	// import_array();
map01bf@620: 	return;
map01bf@620: }
map01bf@620: 
map01bf@620: