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/*************************************************************************
* Copyright 2010 Olivier Belanger *
* *
* This file is part of pyo, a python module to help digital signal *
* processing script creation. *
* *
* pyo 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. *
* *
* pyo 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 pyo. If not, see <http://www.gnu.org/licenses/>. *
*************************************************************************/
#include <Python.h>
#include "structmember.h"
#include <math.h>
#include "pyomodule.h"
#include "streammodule.h"
#include "servermodule.h"
#include "dummymodule.h"
typedef struct {
pyo_audio_HEAD
PyObject *input;
Stream *input_stream;
MYFLT coefs[12];
// sample memories
MYFLT x1[12];
MYFLT y1[12];
MYFLT *buffer_streams;
} HilbertMain;
/* 6th order allpass poles */
static const MYFLT poles[12] = {.3609, 2.7412, 11.1573, 44.7581, 179.6242, 798.4578,
1.2524, 5.5671, 22.3423, 89.6271, 364.7914, 2770.1114};
static void
HilbertMain_compute_variables(HilbertMain *self)
{
int i;
MYFLT polefreq[12];
MYFLT rc[12];
MYFLT alpha[12];
for (i=0; i<12; i++) {
polefreq[i] = poles[i] * 15.0;
rc[i] = 1.0 / (TWOPI * polefreq[i]);
alpha[i] = 1.0 / rc[i];
self->coefs[i] = - (1.0 - (alpha[i] / (2.0 * self->sr))) / (1.0 + (alpha[i] / (2.0 * self->sr)));
}
}
static void
HilbertMain_filters(HilbertMain *self) {
MYFLT xn1, xn2, yn1, yn2;
int j, i;
MYFLT *in = Stream_getData((Stream *)self->input_stream);
for (i=0; i<self->bufsize; i++) {
xn1 = in[i];
for (j=0; j<6; j++) {
yn1 = self->coefs[j] * (xn1 - self->y1[j]) + self->x1[j];
self->x1[j] = xn1;
self->y1[j] = yn1;
xn1 = yn1;
}
xn2 = in[i];
for (j=6; j<12; j++) {
yn2 = self->coefs[j] * (xn2 - self->y1[j]) + self->x1[j];
self->x1[j] = xn1;
self->y1[j] = yn1;
xn2 = yn2;
}
self->buffer_streams[i] = yn1;
self->buffer_streams[i+self->bufsize] = yn2;
}
}
MYFLT *
HilbertMain_getSamplesBuffer(HilbertMain *self)
{
return (MYFLT *)self->buffer_streams;
}
static void
HilbertMain_setProcMode(HilbertMain *self)
{
self->proc_func_ptr = HilbertMain_filters;
}
static void
HilbertMain_compute_next_data_frame(HilbertMain *self)
{
(*self->proc_func_ptr)(self);
}
static int
HilbertMain_traverse(HilbertMain *self, visitproc visit, void *arg)
{
pyo_VISIT
Py_VISIT(self->input);
Py_VISIT(self->input_stream);
return 0;
}
static int
HilbertMain_clear(HilbertMain *self)
{
pyo_CLEAR
Py_CLEAR(self->input);
Py_CLEAR(self->input_stream);
return 0;
}
static void
HilbertMain_dealloc(HilbertMain* self)
{
pyo_DEALLOC
free(self->buffer_streams);
HilbertMain_clear(self);
self->ob_type->tp_free((PyObject*)self);
}
static PyObject *
HilbertMain_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
int i;
PyObject *inputtmp, *input_streamtmp;
HilbertMain *self;
self = (HilbertMain *)type->tp_alloc(type, 0);
INIT_OBJECT_COMMON
Stream_setFunctionPtr(self->stream, HilbertMain_compute_next_data_frame);
self->mode_func_ptr = HilbertMain_setProcMode;
for (i=0; i<12; i++) {
self->x1[i] = 0.0;
self->y1[i] = 0.0;
}
static char *kwlist[] = {"input", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "O", kwlist, &inputtmp))
Py_RETURN_NONE;
INIT_INPUT_STREAM
PyObject_CallMethod(self->server, "addStream", "O", self->stream);
self->buffer_streams = (MYFLT *)realloc(self->buffer_streams, 2 * self->bufsize * sizeof(MYFLT));
HilbertMain_compute_variables((HilbertMain *)self);
(*self->mode_func_ptr)(self);
return (PyObject *)self;
}
static PyObject * HilbertMain_getServer(HilbertMain* self) { GET_SERVER };
static PyObject * HilbertMain_getStream(HilbertMain* self) { GET_STREAM };
static PyObject * HilbertMain_play(HilbertMain *self, PyObject *args, PyObject *kwds) { PLAY };
static PyObject * HilbertMain_stop(HilbertMain *self) { STOP };
static PyMemberDef HilbertMain_members[] = {
{"server", T_OBJECT_EX, offsetof(HilbertMain, server), 0, "Pyo server."},
{"stream", T_OBJECT_EX, offsetof(HilbertMain, stream), 0, "Stream object."},
{"input", T_OBJECT_EX, offsetof(HilbertMain, input), 0, "Input sound object."},
{NULL} /* Sentinel */
};
static PyMethodDef HilbertMain_methods[] = {
{"getServer", (PyCFunction)HilbertMain_getServer, METH_NOARGS, "Returns server object."},
{"_getStream", (PyCFunction)HilbertMain_getStream, METH_NOARGS, "Returns stream object."},
{"play", (PyCFunction)HilbertMain_play, METH_VARARGS|METH_KEYWORDS, "Starts computing without sending sound to soundcard."},
{"stop", (PyCFunction)HilbertMain_stop, METH_NOARGS, "Stops computing."},
{NULL} /* Sentinel */
};
PyTypeObject HilbertMainType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"_pyo.HilbertMain_base", /*tp_name*/
sizeof(HilbertMain), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)HilbertMain_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
0, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_CHECKTYPES, /*tp_flags*/
"HilbertMain objects. Hilbert transform. Created real and imaginary parts from an audio stream", /* tp_doc */
(traverseproc)HilbertMain_traverse, /* tp_traverse */
(inquiry)HilbertMain_clear, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
HilbertMain_methods, /* tp_methods */
HilbertMain_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
HilbertMain_new, /* tp_new */
};
/************************************************************************************************/
/* Hilbert streamer object */
/************************************************************************************************/
typedef struct {
pyo_audio_HEAD
HilbertMain *mainSplitter;
int modebuffer[2];
int chnl; // 0 = real, 1 = imag
} Hilbert;
static void Hilbert_postprocessing_ii(Hilbert *self) { POST_PROCESSING_II };
static void Hilbert_postprocessing_ai(Hilbert *self) { POST_PROCESSING_AI };
static void Hilbert_postprocessing_ia(Hilbert *self) { POST_PROCESSING_IA };
static void Hilbert_postprocessing_aa(Hilbert *self) { POST_PROCESSING_AA };
static void Hilbert_postprocessing_ireva(Hilbert *self) { POST_PROCESSING_IREVA };
static void Hilbert_postprocessing_areva(Hilbert *self) { POST_PROCESSING_AREVA };
static void Hilbert_postprocessing_revai(Hilbert *self) { POST_PROCESSING_REVAI };
static void Hilbert_postprocessing_revaa(Hilbert *self) { POST_PROCESSING_REVAA };
static void Hilbert_postprocessing_revareva(Hilbert *self) { POST_PROCESSING_REVAREVA };
static void
Hilbert_setProcMode(Hilbert *self)
{
int muladdmode;
muladdmode = self->modebuffer[0] + self->modebuffer[1] * 10;
switch (muladdmode) {
case 0:
self->muladd_func_ptr = Hilbert_postprocessing_ii;
break;
case 1:
self->muladd_func_ptr = Hilbert_postprocessing_ai;
break;
case 2:
self->muladd_func_ptr = Hilbert_postprocessing_revai;
break;
case 10:
self->muladd_func_ptr = Hilbert_postprocessing_ia;
break;
case 11:
self->muladd_func_ptr = Hilbert_postprocessing_aa;
break;
case 12:
self->muladd_func_ptr = Hilbert_postprocessing_revaa;
break;
case 20:
self->muladd_func_ptr = Hilbert_postprocessing_ireva;
break;
case 21:
self->muladd_func_ptr = Hilbert_postprocessing_areva;
break;
case 22:
self->muladd_func_ptr = Hilbert_postprocessing_revareva;
break;
}
}
static void
Hilbert_compute_next_data_frame(Hilbert *self)
{
int i;
MYFLT *tmp;
int offset = self->chnl * self->bufsize;
tmp = HilbertMain_getSamplesBuffer((HilbertMain *)self->mainSplitter);
for (i=0; i<self->bufsize; i++) {
self->data[i] = tmp[i + offset];
}
(*self->muladd_func_ptr)(self);
}
static int
Hilbert_traverse(Hilbert *self, visitproc visit, void *arg)
{
pyo_VISIT
Py_VISIT(self->mainSplitter);
return 0;
}
static int
Hilbert_clear(Hilbert *self)
{
pyo_CLEAR
Py_CLEAR(self->mainSplitter);
return 0;
}
static void
Hilbert_dealloc(Hilbert* self)
{
pyo_DEALLOC
Hilbert_clear(self);
self->ob_type->tp_free((PyObject*)self);
}
static PyObject *
Hilbert_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
int i;
PyObject *maintmp=NULL, *multmp=NULL, *addtmp=NULL;
Hilbert *self;
self = (Hilbert *)type->tp_alloc(type, 0);
self->modebuffer[0] = 0;
self->modebuffer[1] = 0;
INIT_OBJECT_COMMON
Stream_setFunctionPtr(self->stream, Hilbert_compute_next_data_frame);
self->mode_func_ptr = Hilbert_setProcMode;
static char *kwlist[] = {"mainSplitter", "chnl", "mul", "add", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "Oi|OO", kwlist, &maintmp, &self->chnl, &multmp, &addtmp))
Py_RETURN_NONE;
Py_XDECREF(self->mainSplitter);
Py_INCREF(maintmp);
self->mainSplitter = (HilbertMain *)maintmp;
if (multmp) {
PyObject_CallMethod((PyObject *)self, "setMul", "O", multmp);
}
if (addtmp) {
PyObject_CallMethod((PyObject *)self, "setAdd", "O", addtmp);
}
PyObject_CallMethod(self->server, "addStream", "O", self->stream);
(*self->mode_func_ptr)(self);
return (PyObject *)self;
}
static PyObject * Hilbert_getServer(Hilbert* self) { GET_SERVER };
static PyObject * Hilbert_getStream(Hilbert* self) { GET_STREAM };
static PyObject * Hilbert_setMul(Hilbert *self, PyObject *arg) { SET_MUL };
static PyObject * Hilbert_setAdd(Hilbert *self, PyObject *arg) { SET_ADD };
static PyObject * Hilbert_setSub(Hilbert *self, PyObject *arg) { SET_SUB };
static PyObject * Hilbert_setDiv(Hilbert *self, PyObject *arg) { SET_DIV };
static PyObject * Hilbert_play(Hilbert *self, PyObject *args, PyObject *kwds) { PLAY };
static PyObject * Hilbert_out(Hilbert *self, PyObject *args, PyObject *kwds) { OUT };
static PyObject * Hilbert_stop(Hilbert *self) { STOP };
static PyObject * Hilbert_multiply(Hilbert *self, PyObject *arg) { MULTIPLY };
static PyObject * Hilbert_inplace_multiply(Hilbert *self, PyObject *arg) { INPLACE_MULTIPLY };
static PyObject * Hilbert_add(Hilbert *self, PyObject *arg) { ADD };
static PyObject * Hilbert_inplace_add(Hilbert *self, PyObject *arg) { INPLACE_ADD };
static PyObject * Hilbert_sub(Hilbert *self, PyObject *arg) { SUB };
static PyObject * Hilbert_inplace_sub(Hilbert *self, PyObject *arg) { INPLACE_SUB };
static PyObject * Hilbert_div(Hilbert *self, PyObject *arg) { DIV };
static PyObject * Hilbert_inplace_div(Hilbert *self, PyObject *arg) { INPLACE_DIV };
static PyMemberDef Hilbert_members[] = {
{"server", T_OBJECT_EX, offsetof(Hilbert, server), 0, "Pyo server."},
{"stream", T_OBJECT_EX, offsetof(Hilbert, stream), 0, "Stream object."},
{"mul", T_OBJECT_EX, offsetof(Hilbert, mul), 0, "Mul factor."},
{"add", T_OBJECT_EX, offsetof(Hilbert, add), 0, "Add factor."},
{NULL} /* Sentinel */
};
static PyMethodDef Hilbert_methods[] = {
{"getServer", (PyCFunction)Hilbert_getServer, METH_NOARGS, "Returns server object."},
{"_getStream", (PyCFunction)Hilbert_getStream, METH_NOARGS, "Returns stream object."},
{"play", (PyCFunction)Hilbert_play, METH_VARARGS|METH_KEYWORDS, "Starts computing without sending sound to soundcard."},
{"out", (PyCFunction)Hilbert_out, METH_VARARGS|METH_KEYWORDS, "Starts computing and sends sound to soundcard channel speficied by argument."},
{"stop", (PyCFunction)Hilbert_stop, METH_NOARGS, "Stops computing."},
{"setMul", (PyCFunction)Hilbert_setMul, METH_O, "Sets Hilbert mul factor."},
{"setAdd", (PyCFunction)Hilbert_setAdd, METH_O, "Sets Hilbert add factor."},
{"setSub", (PyCFunction)Hilbert_setSub, METH_O, "Sets inverse add factor."},
{"setDiv", (PyCFunction)Hilbert_setDiv, METH_O, "Sets inverse mul factor."},
{NULL} /* Sentinel */
};
static PyNumberMethods Hilbert_as_number = {
(binaryfunc)Hilbert_add, /*nb_add*/
(binaryfunc)Hilbert_sub, /*nb_subtract*/
(binaryfunc)Hilbert_multiply, /*nb_multiply*/
(binaryfunc)Hilbert_div, /*nb_divide*/
0, /*nb_remainder*/
0, /*nb_divmod*/
0, /*nb_power*/
0, /*nb_neg*/
0, /*nb_pos*/
0, /*(unaryfunc)array_abs,*/
0, /*nb_nonzero*/
0, /*nb_invert*/
0, /*nb_lshift*/
0, /*nb_rshift*/
0, /*nb_and*/
0, /*nb_xor*/
0, /*nb_or*/
0, /*nb_coerce*/
0, /*nb_int*/
0, /*nb_long*/
0, /*nb_float*/
0, /*nb_oct*/
0, /*nb_hex*/
(binaryfunc)Hilbert_inplace_add, /*inplace_add*/
(binaryfunc)Hilbert_inplace_sub, /*inplace_subtract*/
(binaryfunc)Hilbert_inplace_multiply, /*inplace_multiply*/
(binaryfunc)Hilbert_inplace_div, /*inplace_divide*/
0, /*inplace_remainder*/
0, /*inplace_power*/
0, /*inplace_lshift*/
0, /*inplace_rshift*/
0, /*inplace_and*/
0, /*inplace_xor*/
0, /*inplace_or*/
0, /*nb_floor_divide*/
0, /*nb_true_divide*/
0, /*nb_inplace_floor_divide*/
0, /*nb_inplace_true_divide*/
0, /* nb_index */
};
PyTypeObject HilbertType = {
PyObject_HEAD_INIT(NULL)
0, /*ob_size*/
"_pyo.Hilbert_base", /*tp_name*/
sizeof(Hilbert), /*tp_basicsize*/
0, /*tp_itemsize*/
(destructor)Hilbert_dealloc, /*tp_dealloc*/
0, /*tp_print*/
0, /*tp_getattr*/
0, /*tp_setattr*/
0, /*tp_compare*/
0, /*tp_repr*/
&Hilbert_as_number, /*tp_as_number*/
0, /*tp_as_sequence*/
0, /*tp_as_mapping*/
0, /*tp_hash */
0, /*tp_call*/
0, /*tp_str*/
0, /*tp_getattro*/
0, /*tp_setattro*/
0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE | Py_TPFLAGS_HAVE_GC | Py_TPFLAGS_CHECKTYPES, /*tp_flags*/
"Hilbert objects. Reads one band from a Hilbert transform.", /* tp_doc */
(traverseproc)Hilbert_traverse, /* tp_traverse */
(inquiry)Hilbert_clear, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
Hilbert_methods, /* tp_methods */
Hilbert_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
Hilbert_new, /* tp_new */
};
|