366 lines
10 KiB
Python
366 lines
10 KiB
Python
# This script generates the Sound interface for Python.
|
|
# It uses the "bgen" package to generate C code.
|
|
# It execs the file sndgen.py which contain the function definitions
|
|
# (sndgen.py was generated by sndscan.py, scanning the <Sound.h> header file).
|
|
|
|
from macsupport import *
|
|
|
|
|
|
# define our own function and module generators
|
|
|
|
class SndMixIn: pass
|
|
|
|
class SndFunction(SndMixIn, OSErrFunctionGenerator): pass
|
|
class SndMethod(SndMixIn, OSErrMethodGenerator): pass
|
|
|
|
|
|
# includestuff etc. are imported from macsupport
|
|
|
|
includestuff = includestuff + """
|
|
#include <Sound.h>
|
|
"""
|
|
|
|
initstuff = initstuff + """
|
|
"""
|
|
|
|
|
|
# define types used for arguments (in addition to standard and macsupport types)
|
|
|
|
class SndChannelPtrType(OpaqueByValueType):
|
|
def declare(self, name):
|
|
# Initializing all SndChannelPtr objects to 0 saves
|
|
# special-casing NewSndChannel(), where it is formally an
|
|
# input-output parameter but we treat it as output-only
|
|
# (since Python users are not supposed to allocate memory)
|
|
Output("SndChannelPtr %s = 0;", name)
|
|
|
|
SndChannelPtr = SndChannelPtrType('SndChannelPtr', 'SndCh')
|
|
|
|
SndCommand = OpaqueType('SndCommand', 'SndCmd')
|
|
SndCommand_ptr = OpaqueType('SndCommand', 'SndCmd')
|
|
SndListHandle = OpaqueByValueType("SndListHandle", "ResObj")
|
|
SPBPtr = OpaqueByValueType("SPBPtr", "SPBObj")
|
|
|
|
#
|
|
# NOTE: the following is pretty dangerous. For void pointers we pass buffer addresses
|
|
# but we have no way to check that the buffer is big enough. This is the same problem
|
|
# as in C, though (but Pythoneers may not be suspecting this...)
|
|
void_ptr = Type("void *", "w")
|
|
|
|
class SndCallBackType(InputOnlyType):
|
|
def __init__(self):
|
|
Type.__init__(self, 'PyObject*', 'O')
|
|
def getargsCheck(self, name):
|
|
Output("if (%s != Py_None && !PyCallable_Check(%s))", name, name)
|
|
OutLbrace()
|
|
Output('PyErr_SetString(PyExc_TypeError, "callback must be callable");')
|
|
Output("goto %s__error__;", name)
|
|
OutRbrace()
|
|
def passInput(self, name):
|
|
return "NewSndCallBackProc(SndCh_UserRoutine)"
|
|
def cleanup(self, name):
|
|
# XXX This knows it is executing inside the SndNewChannel wrapper
|
|
Output("if (_res != NULL && %s != Py_None)", name)
|
|
OutLbrace()
|
|
Output("SndChannelObject *p = (SndChannelObject *)_res;")
|
|
Output("p->ob_itself->userInfo = (long)p;")
|
|
Output("Py_INCREF(%s);", name)
|
|
Output("p->ob_callback = %s;", name)
|
|
OutRbrace()
|
|
DedentLevel()
|
|
Output(" %s__error__: ;", name)
|
|
IndentLevel()
|
|
|
|
SndCallBackProcPtr = SndCallBackType()
|
|
SndCallBackUPP = SndCallBackProcPtr
|
|
|
|
SndCompletionProcPtr = FakeType('(SndCompletionProcPtr)0') # XXX
|
|
SndCompletionUPP = SndCompletionProcPtr
|
|
|
|
##InOutBuf128 = FixedInputOutputBufferType(128)
|
|
StateBlock = StructInputOutputBufferType('StateBlock')
|
|
|
|
AudioSelectionPtr = FakeType('0') # XXX
|
|
|
|
ProcPtr = FakeType('0') # XXX
|
|
FilePlayCompletionUPP = FakeType('0') # XXX
|
|
|
|
SCStatus = StructOutputBufferType('SCStatus')
|
|
SMStatus = StructOutputBufferType('SMStatus')
|
|
CompressionInfo = StructOutputBufferType('CompressionInfo')
|
|
|
|
includestuff = includestuff + """
|
|
#include <OSUtils.h> /* for Set(Current)A5 */
|
|
|
|
/* Create a SndCommand object (an (int, int, int) tuple) */
|
|
static PyObject *
|
|
SndCmd_New(SndCommand *pc)
|
|
{
|
|
return Py_BuildValue("hhl", pc->cmd, pc->param1, pc->param2);
|
|
}
|
|
|
|
/* Convert a SndCommand argument */
|
|
static int
|
|
SndCmd_Convert(PyObject *v, SndCommand *pc)
|
|
{
|
|
int len;
|
|
pc->param1 = 0;
|
|
pc->param2 = 0;
|
|
if (PyTuple_Check(v)) {
|
|
if (PyArg_ParseTuple(v, "h|hl", &pc->cmd, &pc->param1, &pc->param2))
|
|
return 1;
|
|
PyErr_Clear();
|
|
return PyArg_ParseTuple(v, "Hhs#", &pc->cmd, &pc->param1, &pc->param2, &len);
|
|
}
|
|
return PyArg_Parse(v, "H", &pc->cmd);
|
|
}
|
|
|
|
static pascal void SndCh_UserRoutine(SndChannelPtr chan, SndCommand *cmd); /* Forward */
|
|
static pascal void SPB_completion(SPBPtr my_spb); /* Forward */
|
|
static pascal void SPB_interrupt(SPBPtr my_spb); /* Forward */
|
|
"""
|
|
|
|
|
|
finalstuff = finalstuff + """
|
|
/* Routine passed to Py_AddPendingCall -- call the Python callback */
|
|
static int
|
|
SndCh_CallCallBack(arg)
|
|
void *arg;
|
|
{
|
|
SndChannelObject *p = (SndChannelObject *)arg;
|
|
PyObject *args;
|
|
PyObject *res;
|
|
args = Py_BuildValue("(O(hhl))",
|
|
p, p->ob_cmd.cmd, p->ob_cmd.param1, p->ob_cmd.param2);
|
|
res = PyEval_CallObject(p->ob_callback, args);
|
|
Py_DECREF(args);
|
|
if (res == NULL)
|
|
return -1;
|
|
Py_DECREF(res);
|
|
return 0;
|
|
}
|
|
|
|
/* Routine passed to NewSndChannel -- schedule a call to SndCh_CallCallBack */
|
|
static pascal void
|
|
SndCh_UserRoutine(SndChannelPtr chan, SndCommand *cmd)
|
|
{
|
|
SndChannelObject *p = (SndChannelObject *)(chan->userInfo);
|
|
if (p->ob_callback != NULL) {
|
|
long A5 = SetA5(p->ob_A5);
|
|
p->ob_cmd = *cmd;
|
|
Py_AddPendingCall(SndCh_CallCallBack, (void *)p);
|
|
SetA5(A5);
|
|
}
|
|
}
|
|
|
|
/* SPB callbacks - Schedule callbacks to Python */
|
|
static int
|
|
SPB_CallCallBack(arg)
|
|
void *arg;
|
|
{
|
|
SPBObject *p = (SPBObject *)arg;
|
|
PyObject *args;
|
|
PyObject *res;
|
|
|
|
if ( p->ob_thiscallback == 0 ) return 0;
|
|
args = Py_BuildValue("(O)", p);
|
|
res = PyEval_CallObject(p->ob_thiscallback, args);
|
|
p->ob_thiscallback = 0;
|
|
Py_DECREF(args);
|
|
if (res == NULL)
|
|
return -1;
|
|
Py_DECREF(res);
|
|
return 0;
|
|
}
|
|
|
|
static pascal void
|
|
SPB_completion(SPBPtr my_spb)
|
|
{
|
|
SPBObject *p = (SPBObject *)(my_spb->userLong);
|
|
|
|
if (p && p->ob_completion) {
|
|
long A5 = SetA5(p->ob_A5);
|
|
p->ob_thiscallback = p->ob_completion; /* Hope we cannot get two at the same time */
|
|
Py_AddPendingCall(SPB_CallCallBack, (void *)p);
|
|
SetA5(A5);
|
|
}
|
|
}
|
|
|
|
static pascal void
|
|
SPB_interrupt(SPBPtr my_spb)
|
|
{
|
|
SPBObject *p = (SPBObject *)(my_spb->userLong);
|
|
|
|
if (p && p->ob_interrupt) {
|
|
long A5 = SetA5(p->ob_A5);
|
|
p->ob_thiscallback = p->ob_interrupt; /* Hope we cannot get two at the same time */
|
|
Py_AddPendingCall(SPB_CallCallBack, (void *)p);
|
|
SetA5(A5);
|
|
}
|
|
}
|
|
"""
|
|
|
|
|
|
# create the module and object definition and link them
|
|
|
|
class SndObjectDefinition(ObjectDefinition):
|
|
|
|
def outputStructMembers(self):
|
|
ObjectDefinition.outputStructMembers(self)
|
|
Output("/* Members used to implement callbacks: */")
|
|
Output("PyObject *ob_callback;")
|
|
Output("long ob_A5;");
|
|
Output("SndCommand ob_cmd;")
|
|
|
|
def outputInitStructMembers(self):
|
|
ObjectDefinition.outputInitStructMembers(self)
|
|
Output("it->ob_callback = NULL;")
|
|
Output("it->ob_A5 = SetCurrentA5();");
|
|
|
|
def outputCleanupStructMembers(self):
|
|
ObjectDefinition.outputCleanupStructMembers(self)
|
|
Output("Py_XDECREF(self->ob_callback);")
|
|
|
|
def outputFreeIt(self, itselfname):
|
|
Output("SndDisposeChannel(%s, 1);", itselfname)
|
|
|
|
#
|
|
|
|
class SpbObjectDefinition(ObjectDefinition):
|
|
|
|
def outputStructMembers(self):
|
|
Output("/* Members used to implement callbacks: */")
|
|
Output("PyObject *ob_completion;")
|
|
Output("PyObject *ob_interrupt;")
|
|
Output("PyObject *ob_thiscallback;");
|
|
Output("long ob_A5;")
|
|
Output("SPB ob_spb;")
|
|
|
|
def outputNew(self):
|
|
Output()
|
|
Output("%sPyObject *%s_New()", self.static, self.prefix)
|
|
OutLbrace()
|
|
Output("%s *it;", self.objecttype)
|
|
self.outputCheckNewArg()
|
|
Output("it = PyObject_NEW(%s, &%s);", self.objecttype, self.typename)
|
|
Output("if (it == NULL) return NULL;")
|
|
self.outputInitStructMembers()
|
|
Output("return (PyObject *)it;")
|
|
OutRbrace()
|
|
|
|
def outputInitStructMembers(self):
|
|
Output("it->ob_completion = NULL;")
|
|
Output("it->ob_interrupt = NULL;")
|
|
Output("it->ob_thiscallback = NULL;")
|
|
Output("it->ob_A5 = SetCurrentA5();")
|
|
Output("memset((char *)&it->ob_spb, 0, sizeof(it->ob_spb));")
|
|
Output("it->ob_spb.userLong = (long)it;")
|
|
|
|
def outputCleanupStructMembers(self):
|
|
ObjectDefinition.outputCleanupStructMembers(self)
|
|
Output("self->ob_spb.userLong = 0;")
|
|
Output("self->ob_thiscallback = 0;")
|
|
Output("Py_XDECREF(self->ob_completion);")
|
|
Output("Py_XDECREF(self->ob_interrupt);")
|
|
|
|
def outputConvert(self):
|
|
Output("%s%s_Convert(v, p_itself)", self.static, self.prefix)
|
|
IndentLevel()
|
|
Output("PyObject *v;")
|
|
Output("%s *p_itself;", self.itselftype)
|
|
DedentLevel()
|
|
OutLbrace()
|
|
self.outputCheckConvertArg()
|
|
Output("if (!%s_Check(v))", self.prefix)
|
|
OutLbrace()
|
|
Output('PyErr_SetString(PyExc_TypeError, "%s required");', self.name)
|
|
Output("return 0;")
|
|
OutRbrace()
|
|
Output("*p_itself = &((%s *)v)->ob_spb;", self.objecttype)
|
|
Output("return 1;")
|
|
OutRbrace()
|
|
|
|
def outputSetattr(self):
|
|
Output()
|
|
Output("static int %s_setattr(self, name, value)", self.prefix)
|
|
IndentLevel()
|
|
Output("%s *self;", self.objecttype)
|
|
Output("char *name;")
|
|
Output("PyObject *value;")
|
|
DedentLevel()
|
|
OutLbrace()
|
|
self.outputSetattrBody()
|
|
OutRbrace()
|
|
|
|
def outputSetattrBody(self):
|
|
Output("""
|
|
int rv = 0;
|
|
|
|
if (strcmp(name, "inRefNum") == 0)
|
|
rv = PyArg_Parse(value, "l", &self->ob_spb.inRefNum);
|
|
else if (strcmp(name, "count") == 0)
|
|
rv = PyArg_Parse(value, "l", &self->ob_spb.count);
|
|
else if (strcmp(name, "milliseconds") == 0)
|
|
rv = PyArg_Parse(value, "l", &self->ob_spb.milliseconds);
|
|
else if (strcmp(name, "buffer") == 0)
|
|
rv = PyArg_Parse(value, "w#", &self->ob_spb.bufferPtr, &self->ob_spb.bufferLength);
|
|
else if (strcmp(name, "completionRoutine") == 0) {
|
|
self->ob_spb.completionRoutine = NewSICompletionProc(SPB_completion);
|
|
self->ob_completion = value;
|
|
Py_INCREF(value);
|
|
rv = 1;
|
|
#if !TARGET_API_MAC_CARBON_NOTYET
|
|
} else if (strcmp(name, "interruptRoutine") == 0) {
|
|
self->ob_spb.completionRoutine = NewSIInterruptProc(SPB_interrupt);
|
|
self->ob_interrupt = value;
|
|
Py_INCREF(value);
|
|
rv = 1;
|
|
#endif
|
|
}
|
|
if ( rv ) return 0;
|
|
else return -1;""")
|
|
|
|
def outputGetattrHook(self):
|
|
Output("""
|
|
if (strcmp(name, "inRefNum") == 0)
|
|
return Py_BuildValue("l", self->ob_spb.inRefNum);
|
|
else if (strcmp(name, "count") == 0)
|
|
return Py_BuildValue("l", self->ob_spb.count);
|
|
else if (strcmp(name, "milliseconds") == 0)
|
|
return Py_BuildValue("l", self->ob_spb.milliseconds);
|
|
else if (strcmp(name, "error") == 0)
|
|
return Py_BuildValue("h", self->ob_spb.error);""")
|
|
|
|
|
|
|
|
sndobject = SndObjectDefinition('SndChannel', 'SndCh', 'SndChannelPtr')
|
|
spbobject = SpbObjectDefinition('SPB', 'SPBObj', 'SPBPtr')
|
|
spbgenerator = ManualGenerator("SPB", "return SPBObj_New();")
|
|
module = MacModule('Snd', 'Snd', includestuff, finalstuff, initstuff)
|
|
module.addobject(sndobject)
|
|
module.addobject(spbobject)
|
|
module.add(spbgenerator)
|
|
|
|
|
|
# create lists of functions and object methods
|
|
|
|
functions = []
|
|
sndmethods = []
|
|
|
|
|
|
# populate the lists
|
|
|
|
execfile('sndgen.py')
|
|
|
|
|
|
# add the functions and methods to the module and object, respectively
|
|
|
|
for f in functions: module.add(f)
|
|
for f in sndmethods: sndobject.add(f)
|
|
|
|
|
|
# generate output
|
|
|
|
SetOutputFileName('Sndmodule.c')
|
|
module.generate()
|