Module with hooks for sound input

Mac/Modules/snd/Sndihooks.c

+/***********************************************************
+Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
+The Netherlands.
+
+                        All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI or Corporation for National Research Initiatives or
+CNRI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+While CWI is the initial source for this software, a modified version
+is made available by the Corporation for National Research Initiatives
+(CNRI) at the Internet address ftp://ftp.python.org.
+
+STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
+CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
+DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
+PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+#include "Python.h"
+#include "macglue.h"
+#include <Sound.h>
+
+#pragma options align=mac68k
+struct SampleRateAvailable_arg {
+	short	numrates;
+	Handle	rates;
+};
+
+struct SampleSizeAvailable_arg {
+	short	numsizes;
+	Handle	sizes;
+};
+
+#pragma options align=reset
+
+extern PyObject *ResObj_New(Handle);
+
+static PyObject *ErrorObject;
+
+
+/* Convert Python object to unsigned Fixed */
+static int
+PyMac_GetUFixed(PyObject *v, Fixed *f)
+{
+	double d;
+	unsigned long uns;
+	
+	if( !PyArg_Parse(v, "d", &d))
+		return 0;
+	uns = (unsigned long)(d * 0x10000);
+	*f = (Fixed)uns;
+	return 1;
+}
+
+/* Convert a Point to a Python object */
+static PyObject *
+PyMac_BuildUFixed(Fixed f)
+{
+	double d;
+	unsigned long funs;
+	
+	funs = (unsigned long)f;
+	
+	d = funs;
+	d = d / 0x10000;
+	return Py_BuildValue("d", d);
+}
+
+
+/* ----------------------------------------------------- */
+
+static char sndih_getChannelAvailable__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getChannelAvailable(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short nchannel;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siChannelAvailable, (Ptr)&nchannel)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("h", nchannel);
+}
+
+static char sndih_getNumberChannels__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getNumberChannels(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short nchannel;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siNumberChannels, (Ptr)&nchannel)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("h", nchannel);
+}
+
+static char sndih_setNumberChannels__doc__[] =
+""
+;
+
+static PyObject *
+sndih_setNumberChannels(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short nchannel;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "lh", &inRefNum, &nchannel))
+		return NULL;
+	
+	if( (err=SPBSetDeviceInfo(inRefNum, siNumberChannels, (Ptr)&nchannel)) != noErr )
+		return PyMac_Error(err);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static char sndih_getContinuous__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getContinuous(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short onoff;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siContinuous, (Ptr)&onoff)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("h", onoff);
+}
+
+static char sndih_setContinuous__doc__[] =
+""
+;
+
+static PyObject *
+sndih_setContinuous(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short onoff;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "lh", &inRefNum, &onoff))
+		return NULL;
+	
+	if( (err=SPBSetDeviceInfo(inRefNum, siContinuous, (Ptr)&onoff)) != noErr )
+		return PyMac_Error(err);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static char sndih_getInputSourceNames__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getInputSourceNames(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	Handle names;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siInputSourceNames, (Ptr)&names)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("O&", ResObj_New, names);
+}
+
+static char sndih_getInputSource__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getInputSource(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short source;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siInputSource, (Ptr)&source)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("h", source);
+}
+
+static char sndih_setInputSource__doc__[] =
+""
+;
+
+static PyObject *
+sndih_setInputSource(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short source;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "lh", &inRefNum, &source))
+		return NULL;
+	
+	if( (err=SPBSetDeviceInfo(inRefNum, siInputSource, (Ptr)&source)) != noErr )
+		return PyMac_Error(err);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static char sndih_getPlayThruOnOff__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getPlayThruOnOff(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short onoff;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siPlayThruOnOff, (Ptr)&onoff)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("h", onoff);
+}
+
+static char sndih_setPlayThruOnOff__doc__[] =
+""
+;
+
+static PyObject *
+sndih_setPlayThruOnOff(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short onoff;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "lh", &inRefNum, &onoff))
+		return NULL;
+	
+	if( (err=SPBSetDeviceInfo(inRefNum, siPlayThruOnOff, (Ptr)&onoff)) != noErr )
+		return PyMac_Error(err);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static char sndih_getSampleRate__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getSampleRate(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	Fixed sample_rate;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siSampleRate, (Ptr)&sample_rate)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("O&", PyMac_BuildUFixed, sample_rate);
+}
+
+static char sndih_setSampleRate__doc__[] =
+""
+;
+
+static PyObject *
+sndih_setSampleRate(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	Fixed sample_rate;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "lO&", &inRefNum, PyMac_GetUFixed, &sample_rate))
+		return NULL;
+	
+	if( (err=SPBSetDeviceInfo(inRefNum, siSampleRate, (Ptr)&sample_rate)) != noErr )
+		return PyMac_Error(err);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static char sndih_getSampleSize__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getSampleSize(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short bits;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siSampleSize, (Ptr)&bits)) != noErr )
+		return PyMac_Error(err);
+	return Py_BuildValue("h", bits);
+}
+
+static char sndih_setSampleSize__doc__[] =
+""
+;
+
+static PyObject *
+sndih_setSampleSize(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	short size;
+	OSErr err;
+
+	if (!PyArg_ParseTuple(args, "lh", &inRefNum, &size))
+		return NULL;
+	
+	if( (err=SPBSetDeviceInfo(inRefNum, siSampleSize, (Ptr)&size)) != noErr )
+		return PyMac_Error(err);
+	Py_INCREF(Py_None);
+	return Py_None;
+}
+
+static char sndih_getSampleSizeAvailable__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getSampleSizeAvailable(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	struct SampleSizeAvailable_arg arg;
+	OSErr err;
+	PyObject *rsizes;
+	short *fsizes;
+	int i;
+
+	arg.sizes = NULL;
+	rsizes = NULL;
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siSampleSizeAvailable, (Ptr)&arg)) != noErr ) {
+		return PyMac_Error(err);
+	}
+	fsizes = (short *)*(arg.sizes);
+	/* Handle contains a list of rates */
+	if( (rsizes = PyTuple_New(arg.numsizes)) == NULL)
+		return NULL;
+	for( i=0; i<arg.numsizes; i++ )
+		PyTuple_SetItem(rsizes, i, PyInt_FromLong((long)fsizes[i]));
+	return rsizes;
+}
+
+static char sndih_getSampleRateAvailable__doc__[] =
+""
+;
+
+static PyObject *
+sndih_getSampleRateAvailable(self, args)
+	PyObject *self;	/* Not used */
+	PyObject *args;
+{
+	long inRefNum;
+	struct SampleRateAvailable_arg arg;
+	OSErr err;
+	PyObject *rrates, *obj;
+	Fixed *frates;
+	int i;
+
+	arg.rates = NULL;
+	rrates = NULL;
+	if (!PyArg_ParseTuple(args, "l", &inRefNum))
+		return NULL;
+	
+	if( (err=SPBGetDeviceInfo(inRefNum, siSampleRateAvailable, (Ptr)&arg)) != noErr ) {
+		return PyMac_Error(err);
+	}
+	frates = (Fixed *)*(arg.rates);
+	if( arg.numrates == 0 ) {
+		/* The handle contains upper and lowerbound */
+		rrates = Py_BuildValue("O&O&", frates[0], frates[1]);
+		if (rrates == NULL) return NULL;
+	} else {
+		/* Handle contains a list of rates */
+		if( (rrates = PyTuple_New(arg.numrates)) == NULL)
+			return NULL;
+		for( i=0; i<arg.numrates; i++ ) {
+			if( (obj = Py_BuildValue("O&", PyMac_BuildUFixed, frates[i]))==NULL)
+				goto out;
+			PyTuple_SetItem(rrates, i, obj);
+		}
+	}
+	return Py_BuildValue("hO", arg.numrates, rrates);
+out:
+	Py_XDECREF(rrates);
+	return NULL;
+}
+
+/* List of methods defined in the module */
+
+static struct PyMethodDef sndih_methods[] = {
+ {"getChannelAvailable",	(PyCFunction)sndih_getChannelAvailable,	METH_VARARGS,	sndih_getChannelAvailable__doc__},
+ {"getNumberChannels",	(PyCFunction)sndih_getNumberChannels,	METH_VARARGS,	sndih_getNumberChannels__doc__},
+ {"setNumberChannels",	(PyCFunction)sndih_setNumberChannels,	METH_VARARGS,	sndih_setNumberChannels__doc__},
+ {"getContinuous",	(PyCFunction)sndih_getContinuous,	METH_VARARGS,	sndih_getContinuous__doc__},
+ {"setContinuous",	(PyCFunction)sndih_setContinuous,	METH_VARARGS,	sndih_setContinuous__doc__},
+ {"getInputSourceNames",	(PyCFunction)sndih_getInputSourceNames,	METH_VARARGS,	sndih_getInputSourceNames__doc__},
+ {"getInputSource",	(PyCFunction)sndih_getInputSource,	METH_VARARGS,	sndih_getInputSource__doc__},
+ {"setInputSource",	(PyCFunction)sndih_setInputSource,	METH_VARARGS,	sndih_setInputSource__doc__},
+ {"getPlayThruOnOff",	(PyCFunction)sndih_getPlayThruOnOff,	METH_VARARGS,	sndih_getPlayThruOnOff__doc__},
+ {"setPlayThruOnOff",	(PyCFunction)sndih_setPlayThruOnOff,	METH_VARARGS,	sndih_setPlayThruOnOff__doc__},
+ {"getSampleRate",	(PyCFunction)sndih_getSampleRate,	METH_VARARGS,	sndih_getSampleRate__doc__},
+ {"setSampleRate",	(PyCFunction)sndih_setSampleRate,	METH_VARARGS,	sndih_setSampleRate__doc__},
+ {"getSampleSize",	(PyCFunction)sndih_getSampleSize,	METH_VARARGS,	sndih_getSampleSize__doc__},
+ {"setSampleSize",	(PyCFunction)sndih_setSampleSize,	METH_VARARGS,	sndih_setSampleSize__doc__},
+ {"getSampleSizeAvailable",	(PyCFunction)sndih_getSampleSizeAvailable,	METH_VARARGS,	sndih_getSampleSizeAvailable__doc__},
+ {"getSampleRateAvailable",	(PyCFunction)sndih_getSampleRateAvailable,	METH_VARARGS,	sndih_getSampleRateAvailable__doc__},
+ 
+	{NULL,	 (PyCFunction)NULL, 0, NULL}		/* sentinel */
+};
+
+
+/* Initialization function for the module (*must* be called initSndihooks) */
+
+static char Sndihooks_module_documentation[] = 
+""
+;
+
+void
+initSndihooks()
+{
+	PyObject *m, *d;
+
+	/* Create the module and add the functions */
+	m = Py_InitModule4("Sndihooks", sndih_methods,
+		Sndihooks_module_documentation,
+		(PyObject*)NULL,PYTHON_API_VERSION);
+
+	/* Add some symbolic constants to the module */
+	d = PyModule_GetDict(m);
+	ErrorObject = PyString_FromString("Sndihooks.error");
+	PyDict_SetItemString(d, "error", ErrorObject);
+
+	/* XXXX Add constants here */
+	
+	/* Check for errors */
+	if (PyErr_Occurred())
+		Py_FatalError("can't initialize module Sndihooks");
+}
+