source: python/trunk/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 "pymactoolbox.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

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
init_Sndihooks()
{
    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");
}