jack_mixer_c.c

   1 /*
   2  * This file is part of jack_mixer
   3  *
   4  * Copyright (C) 2009 Frederic Peters <fpeters@0d.be>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; version 2 of the License
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  */
  19
  20 #include <Python.h>
  21
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdbool.h>
  25
  26 #include <structmember.h>
  27
  28 #include "jack_mixer.h"
  29
  30
  31 /** Scale Type **/
  32
  33 typedef struct {
  34         PyObject_HEAD
  35         jack_mixer_scale_t scale;
  36 } ScaleObject;
  37
  38 static void
  39 Scale_dealloc(ScaleObject *self)
  40 {
  41         if (self->scale)
  42                 scale_destroy(self->scale);
  43         self->ob_type->tp_free((PyObject*)self);
  44 }
  45
  46 static int
  47 Scale_init(ScaleObject *self, PyObject *args, PyObject *kwds)
  48 {
  49         self->scale = scale_create();
  50         return 0;
  51 }
  52
  53 static PyObject*
  54 Scale_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
  55 {
  56         ScaleObject *self;
  57
  58         self = (ScaleObject*)type->tp_alloc(type, 0);
  59
  60         return (PyObject*)self;
  61 }
  62
  63 static PyObject*
  64 Scale_add_threshold(ScaleObject *self, PyObject *args)
  65 {
  66         float db, scale_value;
  67
  68         if (! PyArg_ParseTuple(args, "ff", &db, &scale_value)) return NULL;
  69
  70         scale_add_threshold(self->scale, db, scale_value);
  71
  72         Py_INCREF(Py_None);
  73         return Py_None;
  74 }
  75
  76 static PyObject*
  77 Scale_calculate_coefficients(ScaleObject *self, PyObject *args)
  78 {
  79         if (! PyArg_ParseTuple(args, "")) return NULL;
  80         scale_calculate_coefficients(self->scale);
  81         Py_INCREF(Py_None);
  82         return Py_None;
  83 }
  84
  85 static PyObject*
  86 Scale_db_to_scale(ScaleObject *self, PyObject *args)
  87 {
  88         double db;
  89         if (! PyArg_ParseTuple(args, "d", &db)) return NULL;
  90         return PyFloat_FromDouble(scale_db_to_scale(self->scale, db));
  91 }
  92
  93 static PyObject*
  94 Scale_scale_to_db(ScaleObject *self, PyObject *args)
  95 {
  96         double scale_value;
  97         if (! PyArg_ParseTuple(args, "d", &scale_value)) return NULL;
  98         return PyFloat_FromDouble(scale_scale_to_db(self->scale, scale_value));
  99 }
 100
 101 static PyMethodDef Scale_methods[] = {
 102         {"add_threshold", (PyCFunction)Scale_add_threshold, METH_VARARGS, "Add threshold"},
 103         {"calculate_coefficients", (PyCFunction)Scale_calculate_coefficients,
 104                 METH_VARARGS, "Calculate coefficients"},
 105         {"db_to_scale", (PyCFunction)Scale_db_to_scale, METH_VARARGS, "dB to scale"},
 106         {"scale_to_db", (PyCFunction)Scale_scale_to_db, METH_VARARGS, "scale to dB"},
 107         {NULL}
 108 };
 109
 110 static PyTypeObject ScaleType = {
 111         PyObject_HEAD_INIT(NULL)
 112         0,       /*ob_size*/
 113         "jack_mixer_c.Scale",    /*tp_name*/
 114         sizeof(ScaleObject), /*tp_basicsize*/
 115         0,       /*tp_itemsize*/
 116         (destructor)Scale_dealloc,       /*tp_dealloc*/
 117         0,       /*tp_print*/
 118         0,       /*tp_getattr*/
 119         0,       /*tp_setattr*/
 120         0,       /*tp_compare*/
 121         0,       /*tp_repr*/
 122         0,       /*tp_as_number*/
 123         0,       /*tp_as_sequence*/
 124         0,       /*tp_as_mapping*/
 125         0,       /*tp_hash */
 126         0,       /*tp_call*/
 127         0,       /*tp_str*/
 128         0,       /*tp_getattro*/
 129         0,       /*tp_setattro*/
 130         0,       /*tp_as_buffer*/
 131         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 132         "Scale objects",           /* tp_doc */
 133         0,                         /* tp_traverse */
 134         0,                         /* tp_clear */
 135         0,                         /* tp_richcompare */
 136         0,                         /* tp_weaklistoffset */
 137         0,                         /* tp_iter */
 138         0,                         /* tp_iternext */
 139         Scale_methods,             /* tp_methods */
 140         0,             /* tp_members */
 141         0,           /* tp_getset */
 142         0,                         /* tp_base */
 143         0,                         /* tp_dict */
 144         0,                         /* tp_descr_get */
 145         0,                         /* tp_descr_set */
 146         0,                         /* tp_dictoffset */
 147         (initproc)Scale_init,      /* tp_init */
 148         0,                         /* tp_alloc */
 149         Scale_new,                 /* tp_new */
 150 };
 151
 152
 153 /** Channel Type **/
 154
 155 typedef struct {
 156         PyObject_HEAD
 157         PyObject *midi_change_callback;
 158         jack_mixer_channel_t channel;
 159 } ChannelObject;
 160
 161 static void
 162 Channel_dealloc(ChannelObject *self)
 163 {
 164         Py_XDECREF(self->midi_change_callback);
 165         self->ob_type->tp_free((PyObject*)self);
 166 }
 167
 168 static int
 169 Channel_init(ChannelObject *self, PyObject *args, PyObject *kwds)
 170 {
 171         self->midi_change_callback = NULL;
 172         return 0;
 173 }
 174
 175 static PyObject*
 176 Channel_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 177 {
 178         ChannelObject *self;
 179
 180         self = (ChannelObject*)type->tp_alloc(type, 0);
 181
 182         if (self != NULL) {
 183                 self->channel = NULL;
 184                 self->midi_change_callback = NULL;
 185         }
 186
 187         return (PyObject*)self;
 188 }
 189
 190 static PyObject*
 191 Channel_get_is_stereo(ChannelObject *self, void *closure)
 192 {
 193         PyObject *result;
 194
 195         bool is_stereo = channel_is_stereo(self->channel);
 196         if (is_stereo) {
 197                 result = Py_True;
 198         } else {
 199                 result = Py_False;
 200         }
 201         Py_INCREF(result);
 202         return result;
 203 }
 204
 205 static PyObject*
 206 Channel_get_volume(ChannelObject *self, void *closure)
 207 {
 208         return PyFloat_FromDouble(channel_volume_read(self->channel));
 209 }
 210
 211 static int
 212 Channel_set_volume(ChannelObject *self, PyObject *value, void *closure)
 213 {
 214         if (self->channel == NULL) {
 215                 PyErr_SetString(PyExc_RuntimeError, "unitialized channel");
 216                 return -1;
 217         }
 218         channel_volume_write(self->channel, PyFloat_AsDouble(value));
 219         return 0;
 220 }
 221
 222 static PyObject*
 223 Channel_get_balance(ChannelObject *self, void *closure)
 224 {
 225         return PyFloat_FromDouble(channel_balance_read(self->channel));
 226 }
 227
 228 static int
 229 Channel_set_balance(ChannelObject *self, PyObject *value, void *closure)
 230 {
 231         channel_balance_write(self->channel, PyFloat_AsDouble(value));
 232         return 0;
 233 }
 234
 235 static PyObject*
 236 Channel_get_out_mute(ChannelObject *self, void *closure)
 237 {
 238         PyObject *result;
 239
 240     if (channel_is_out_muted(self->channel)) {
 241                 result = Py_True;
 242         } else {
 243                 result = Py_False;
 244         }
 245         Py_INCREF(result);
 246         return result;
 247 }
 248
 249 static int
 250 Channel_set_out_mute(ChannelObject *self, PyObject *value, void *closure)
 251 {
 252         if (value == Py_True) {
 253                 channel_out_mute(self->channel);
 254         } else {
 255                 channel_out_unmute(self->channel);
 256         }
 257         return 0;
 258 }
 259
 260 static PyObject*
 261 Channel_get_meter(ChannelObject *self, void *closure)
 262 {
 263         PyObject *result;
 264         double left, right;
 265
 266         if (channel_is_stereo(self->channel)) {
 267                 result = PyTuple_New(2);
 268                 channel_stereo_meter_read(self->channel, &left, &right);
 269                 PyTuple_SetItem(result, 0, PyFloat_FromDouble(left));
 270                 PyTuple_SetItem(result, 1, PyFloat_FromDouble(right));
 271         } else {
 272                 result = PyTuple_New(1);
 273                 channel_mono_meter_read(self->channel, &left);
 274                 PyTuple_SetItem(result, 0, PyFloat_FromDouble(left));
 275         }
 276         return result;
 277 }
 278
 279 static PyObject*
 280 Channel_get_abspeak(ChannelObject *self, void *closure)
 281 {
 282         return PyFloat_FromDouble(channel_abspeak_read(self->channel));
 283 }
 284
 285 static int
 286 Channel_set_abspeak(ChannelObject *self, PyObject *value, void *closure)
 287 {
 288         if (value != Py_None) {
 289                 fprintf(stderr, "abspeak can only be reset (set to None)\n");
 290                 return -1;
 291         }
 292         channel_abspeak_reset(self->channel);
 293         return 0;
 294 }
 295
 296 static int
 297 Channel_set_midi_scale(ChannelObject *self, PyObject *value, void *closure)
 298 {
 299         ScaleObject *scale_object = (ScaleObject*)value; /* XXX: check */
 300
 301         channel_set_midi_scale(self->channel, scale_object->scale);
 302         return 0;
 303 }
 304
 305
 306 static PyObject*
 307 Channel_get_midi_change_callback(ChannelObject *self, void *closure)
 308 {
 309         if (self->midi_change_callback) {
 310                 Py_INCREF(self->midi_change_callback);
 311                 return self->midi_change_callback;
 312         } else {
 313                 Py_INCREF(Py_None);
 314                 return Py_None;
 315         }
 316 }
 317
 318 static void
 319 channel_midi_callback(void *userdata)
 320 {
 321         ChannelObject *self = (ChannelObject*)userdata;
 322         PyGILState_STATE gstate;
 323
 324         gstate = PyGILState_Ensure();
 325         PyObject_CallObject(self->midi_change_callback, NULL);
 326         PyGILState_Release(gstate);
 327 }
 328
 329 static int
 330 Channel_set_midi_change_callback(ChannelObject *self, PyObject *value, void *closure)
 331 {
 332         if (value == Py_None) {
 333                 self->midi_change_callback = NULL;
 334                 channel_set_midi_change_callback(self->channel, NULL, NULL);
 335         } else {
 336                 if (!PyCallable_Check(value)) {
 337                         PyErr_SetString(PyExc_TypeError, "value must be callable");
 338                         return -1;
 339                 }
 340                 if (self->midi_change_callback) {
 341                         Py_XDECREF(self->midi_change_callback);
 342                 }
 343                 Py_INCREF(value);
 344                 self->midi_change_callback = value;
 345                 channel_set_midi_change_callback(self->channel,
 346                                 channel_midi_callback, self);
 347         }
 348
 349         return 0;
 350 }
 351
 352 static PyObject*
 353 Channel_get_name(ChannelObject *self, void *closure)
 354 {
 355         return PyString_FromString(channel_get_name(self->channel));
 356 }
 357
 358 static int
 359 Channel_set_name(ChannelObject *self, PyObject *value, void *closure)
 360 {
 361         channel_rename(self->channel, PyString_AsString(value));
 362         return 0;
 363 }
 364
 365 static PyObject*
 366 Channel_get_balance_midi_cc(ChannelObject *self, void *closure)
 367 {
 368         return PyInt_FromLong(channel_get_balance_midi_cc(self->channel));
 369 }
 370
 371 static int
 372 Channel_set_balance_midi_cc(ChannelObject *self, PyObject *value, void *closure)
 373 {
 374         unsigned int new_cc;
 375         unsigned int result;
 376
 377         new_cc = PyInt_AsLong(value);
 378         result = channel_set_balance_midi_cc(self->channel, new_cc);
 379         if (result == 0) {
 380                 return 0;
 381         }
 382         if (result == 1) {
 383                 PyErr_SetString(PyExc_RuntimeError, "value already in use");
 384         } else if (result == 2) {
 385                 PyErr_SetString(PyExc_RuntimeError, "value out of range");
 386         }
 387         return -1;
 388 }
 389
 390 static PyObject*
 391 Channel_get_volume_midi_cc(ChannelObject *self, void *closure)
 392 {
 393         return PyInt_FromLong(channel_get_volume_midi_cc(self->channel));
 394 }
 395
 396 static int
 397 Channel_set_volume_midi_cc(ChannelObject *self, PyObject *value, void *closure)
 398 {
 399         unsigned int new_cc;
 400         unsigned int result;
 401
 402         new_cc = PyInt_AsLong(value);
 403         result = channel_set_volume_midi_cc(self->channel, new_cc);
 404         if (result == 0) {
 405                 return 0;
 406         }
 407         if (result == 1) {
 408                 PyErr_SetString(PyExc_RuntimeError, "value already in use");
 409         } else if (result == 2) {
 410                 PyErr_SetString(PyExc_RuntimeError, "value out of range");
 411         }
 412         return -1;
 413 }
 414
 415 static PyObject*
 416 Channel_get_midi_in_got_events(ChannelObject *self, void *closure)
 417 {
 418         PyObject *result;
 419
 420         if (channel_get_midi_in_got_events(self->channel)) {
 421                 result = Py_True;
 422         } else {
 423                 result = Py_False;
 424         }
 425         Py_INCREF(result);
 426         return result;
 427 }
 428
 429
 430 static PyGetSetDef Channel_getseters[] = {
 431         {"is_stereo",
 432                 (getter)Channel_get_is_stereo, NULL,
 433                 "mono/stereo", NULL},
 434         {"volume",
 435                 (getter)Channel_get_volume, (setter)Channel_set_volume,
 436                 "volume", NULL},
 437         {"balance",
 438                 (getter)Channel_get_balance, (setter)Channel_set_balance,
 439                 "balance", NULL},
 440         {"out_mute",
 441                 (getter)Channel_get_out_mute, (setter)Channel_set_out_mute,
 442                 "out_mute", NULL},
 443         {"meter",
 444                 (getter)Channel_get_meter, NULL,
 445                 "meter", NULL},
 446         {"abspeak",
 447                 (getter)Channel_get_abspeak, (setter)Channel_set_abspeak,
 448                 "balance", NULL},
 449         {"midi_scale",
 450                 NULL, (setter)Channel_set_midi_scale,
 451                 "midi scale", NULL},
 452         {"midi_change_callback",
 453                 (getter)Channel_get_midi_change_callback,
 454                 (setter)Channel_set_midi_change_callback,
 455                 "midi change callback", NULL},
 456         {"name",
 457                 (getter)Channel_get_name,
 458                 (setter)Channel_set_name,
 459                 "name", NULL},
 460         {"balance_midi_cc",
 461                 (getter)Channel_get_balance_midi_cc,
 462                 (setter)Channel_set_balance_midi_cc,
 463                 "Balance MIDI CC", NULL},
 464         {"volume_midi_cc",
 465                 (getter)Channel_get_volume_midi_cc,
 466                 (setter)Channel_set_volume_midi_cc,
 467                 "Volume MIDI CC", NULL},
 468         {"midi_in_got_events",
 469                 (getter)Channel_get_midi_in_got_events, NULL,
 470                 "Got new MIDI IN events", NULL},
 471         {NULL}
 472 };
 473
 474 static PyObject*
 475 Channel_remove(ChannelObject *self, PyObject *args)
 476 {
 477         if (! PyArg_ParseTuple(args, "")) return NULL;
 478         remove_channel(self->channel);
 479         Py_INCREF(Py_None);
 480         return Py_None;
 481 }
 482
 483 static PyObject*
 484 Channel_autoset_midi_cc(ChannelObject *self, PyObject *args)
 485 {
 486         if (! PyArg_ParseTuple(args, "")) return NULL;
 487         channel_autoset_midi_cc(self->channel);
 488         Py_INCREF(Py_None);
 489         return Py_None;
 490 }
 491
 492 static PyMethodDef channel_methods[] = {
 493         {"remove", (PyCFunction)Channel_remove, METH_VARARGS, "Remove"},
 494         {"autoset_midi_cc", (PyCFunction)Channel_autoset_midi_cc, METH_VARARGS, "Autoset MIDI CC"},
 495         {NULL}
 496 };
 497
 498 static PyTypeObject ChannelType = {
 499         PyObject_HEAD_INIT(NULL)
 500         0,       /*ob_size*/
 501         "jack_mixer_c.Channel",    /*tp_name*/
 502         sizeof(ChannelObject), /*tp_basicsize*/
 503         0,       /*tp_itemsize*/
 504         (destructor)Channel_dealloc,       /*tp_dealloc*/
 505         0,       /*tp_print*/
 506         0,       /*tp_getattr*/
 507         0,       /*tp_setattr*/
 508         0,       /*tp_compare*/
 509         0,       /*tp_repr*/
 510         0,       /*tp_as_number*/
 511         0,       /*tp_as_sequence*/
 512         0,       /*tp_as_mapping*/
 513         0,       /*tp_hash */
 514         0,       /*tp_call*/
 515         0,       /*tp_str*/
 516         0,       /*tp_getattro*/
 517         0,       /*tp_setattro*/
 518         0,       /*tp_as_buffer*/
 519         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 520         "Channel objects",           /* tp_doc */
 521         0,                         /* tp_traverse */
 522         0,                         /* tp_clear */
 523         0,                         /* tp_richcompare */
 524         0,                         /* tp_weaklistoffset */
 525         0,                         /* tp_iter */
 526         0,                         /* tp_iternext */
 527         channel_methods,           /* tp_methods */
 528         0,             /* tp_members */
 529         Channel_getseters,           /* tp_getset */
 530         0,                         /* tp_base */
 531         0,                         /* tp_dict */
 532         0,                         /* tp_descr_get */
 533         0,                         /* tp_descr_set */
 534         0,                         /* tp_dictoffset */
 535         (initproc)Channel_init,    /* tp_init */
 536         0,                         /* tp_alloc */
 537         Channel_new,                 /* tp_new */
 538 };
 539
 540 static PyObject*
 541 Channel_New(jack_mixer_channel_t channel)
 542 {
 543         ChannelObject *self;
 544         self = (ChannelObject*)PyObject_NEW(ChannelObject, &ChannelType);
 545         if (self != NULL) {
 546                 self->channel = channel;
 547                 self->midi_change_callback = NULL;
 548         }
 549         return (PyObject*)self;
 550 }
 551
 552 /** Output Channel Type **/
 553
 554 typedef struct {
 555         PyObject_HEAD
 556         PyObject *midi_change_callback;
 557         jack_mixer_output_channel_t *output_channel;
 558 } OutputChannelObject;
 559
 560 static int
 561 OutputChannel_set_prefader(OutputChannelObject *self, PyObject *value, void *closure)
 562 {
 563         if (value == Py_True) {
 564                 output_channel_set_prefader(self->output_channel, true);
 565         } else {
 566                 output_channel_set_prefader(self->output_channel, false);
 567         }
 568         return 0;
 569 }
 570
 571 static PyObject*
 572 OutputChannel_get_prefader(OutputChannelObject *self, void *closure)
 573 {
 574         PyObject *result;
 575
 576         if (output_channel_is_prefader(self->output_channel)) {
 577                 result = Py_True;
 578         } else {
 579                 result = Py_False;
 580         }
 581         Py_INCREF(result);
 582         return result;
 583 }
 584
 585 static PyGetSetDef OutputChannel_getseters[] = {
 586         {"prefader",
 587                 (getter)OutputChannel_get_prefader, (setter)OutputChannel_set_prefader,
 588                 "prefader", NULL},
 589         {NULL}
 590 };
 591
 592 static PyObject*
 593 OutputChannel_remove(OutputChannelObject *self, PyObject *args)
 594 {
 595         if (! PyArg_ParseTuple(args, "")) return NULL;
 596         remove_output_channel(self->output_channel);
 597         Py_INCREF(Py_None);
 598         return Py_None;
 599 }
 600
 601 static PyObject*
 602 OutputChannel_set_solo(OutputChannelObject *self, PyObject *args)
 603 {
 604         PyObject *channel;
 605         unsigned char solo;
 606
 607         if (! PyArg_ParseTuple(args, "Ob", &channel, &solo)) return NULL;
 608
 609         output_channel_set_solo(self->output_channel,
 610                         ((ChannelObject*)channel)->channel,
 611                         solo);
 612
 613         Py_INCREF(Py_None);
 614         return Py_None;
 615 }
 616
 617 static PyObject*
 618 OutputChannel_set_muted(OutputChannelObject *self, PyObject *args)
 619 {
 620         PyObject *channel;
 621         unsigned char muted;
 622
 623         if (! PyArg_ParseTuple(args, "Ob", &channel, &muted)) return NULL;
 624
 625         output_channel_set_muted(self->output_channel,
 626                         ((ChannelObject*)channel)->channel,
 627                         muted);
 628
 629         Py_INCREF(Py_None);
 630         return Py_None;
 631 }
 632
 633 static PyObject*
 634 OutputChannel_is_solo(OutputChannelObject *self, PyObject *args)
 635 {
 636         PyObject *channel;
 637         PyObject *result;
 638
 639         if (! PyArg_ParseTuple(args, "O", &channel)) return NULL;
 640
 641         if (output_channel_is_solo(self->output_channel,
 642                         ((ChannelObject*)channel)->channel)) {
 643                 result = Py_True;
 644         } else {
 645                 result = Py_False;
 646         }
 647
 648         Py_INCREF(result);
 649         return result;
 650 }
 651
 652 static PyObject*
 653 OutputChannel_is_muted(OutputChannelObject *self, PyObject *args)
 654 {
 655         PyObject *channel;
 656         PyObject *result;
 657
 658         if (! PyArg_ParseTuple(args, "O", &channel)) return NULL;
 659
 660         if (output_channel_is_muted(self->output_channel,
 661                         ((ChannelObject*)channel)->channel)) {
 662                 result = Py_True;
 663         } else {
 664                 result = Py_False;
 665         }
 666
 667         Py_INCREF(result);
 668         return result;
 669 }
 670
 671 static PyMethodDef output_channel_methods[] = {
 672         {"remove", (PyCFunction)OutputChannel_remove, METH_VARARGS, "Remove"},
 673         {"set_solo", (PyCFunction)OutputChannel_set_solo, METH_VARARGS, "Set a channel as solo"},
 674         {"set_muted", (PyCFunction)OutputChannel_set_muted, METH_VARARGS, "Set a channel as muted"},
 675         {"is_solo", (PyCFunction)OutputChannel_is_solo, METH_VARARGS, "Is a channel set as solo"},
 676         {"is_muted", (PyCFunction)OutputChannel_is_muted, METH_VARARGS, "Is a channel set as muted"},
 677         {NULL}
 678 };
 679
 680 static PyTypeObject OutputChannelType = {
 681         PyObject_HEAD_INIT(NULL)
 682         0,       /*ob_size*/
 683         "jack_mixer_c.OutputChannel",    /*tp_name*/
 684         sizeof(OutputChannelObject), /*tp_basicsize*/
 685         0,       /*tp_itemsize*/
 686         0,       /*tp_dealloc*/
 687         0,       /*tp_print*/
 688         0,       /*tp_getattr*/
 689         0,       /*tp_setattr*/
 690         0,       /*tp_compare*/
 691         0,       /*tp_repr*/
 692         0,       /*tp_as_number*/
 693         0,       /*tp_as_sequence*/
 694         0,       /*tp_as_mapping*/
 695         0,       /*tp_hash */
 696         0,       /*tp_call*/
 697         0,       /*tp_str*/
 698         0,       /*tp_getattro*/
 699         0,       /*tp_setattro*/
 700         0,       /*tp_as_buffer*/
 701         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 702         "Output Channel objects",           /* tp_doc */
 703         0,                         /* tp_traverse */
 704         0,                         /* tp_clear */
 705         0,                         /* tp_richcompare */
 706         0,                         /* tp_weaklistoffset */
 707         0,                         /* tp_iter */
 708         0,                         /* tp_iternext */
 709         output_channel_methods,    /* tp_methods */
 710         0,             /* tp_members */
 711         OutputChannel_getseters,   /* tp_getset */
 712         &ChannelType,              /* tp_base */
 713         0,                         /* tp_dict */
 714         0,                         /* tp_descr_get */
 715         0,                         /* tp_descr_set */
 716         0,                         /* tp_dictoffset */
 717         0,                         /* tp_init */
 718         0,                         /* tp_alloc */
 719         0,                         /* tp_new */
 720 };
 721
 722 static PyObject*
 723 OutputChannel_New(jack_mixer_output_channel_t output_channel)
 724 {
 725         OutputChannelObject *self;
 726         self = (OutputChannelObject*)PyObject_NEW(OutputChannelObject, &OutputChannelType);
 727         if (self != NULL) {
 728                 self->midi_change_callback = NULL;
 729                 self->output_channel = output_channel;
 730         }
 731         return (PyObject*)self;
 732 }
 733
 734
 735 /** Mixer Type **/
 736
 737 typedef struct {
 738         PyObject_HEAD
 739         jack_mixer_t mixer;
 740 } MixerObject;
 741
 742 static void
 743 Mixer_dealloc(MixerObject *self)
 744 {
 745         if (self->mixer)
 746                 destroy(self->mixer);
 747         self->ob_type->tp_free((PyObject*)self);
 748 }
 749
 750 static PyObject*
 751 Mixer_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 752 {
 753         MixerObject *self;
 754
 755         self = (MixerObject*)type->tp_alloc(type, 0);
 756
 757         if (self != NULL) {
 758                 self->mixer = NULL;
 759         }
 760
 761         return (PyObject*)self;
 762 }
 763
 764 static int
 765 Mixer_init(MixerObject *self, PyObject *args, PyObject *kwds)
 766 {
 767         static char *kwlist[] = {"name", "stereo", NULL};
 768         char *name;
 769         int stereo = 1;
 770
 771         if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|b", kwlist, &name, &stereo))
 772                 return -1;
 773
 774         self->mixer = create(name, (bool)stereo);
 775         if (self->mixer == NULL) {
 776                 PyErr_SetString(PyExc_RuntimeError,
 777                                 "error creating mixer, probably jack is not running");
 778                 return -1;
 779         }
 780
 781         return 0;
 782 }
 783
 784 static PyMemberDef Mixer_members[] = {
 785         {NULL}
 786 };
 787
 788 static PyObject*
 789 Mixer_get_channels_count(MixerObject *self, void *closure)
 790 {
 791         return PyInt_FromLong(get_channels_count(self->mixer));
 792 }
 793
 794 static PyObject*
 795 Mixer_get_client_name(MixerObject *self, void *closure)
 796 {
 797         return PyString_FromString(get_client_name(self->mixer));
 798 }
 799
 800 static PyObject*
 801 Mixer_get_last_midi_channel(MixerObject *self, void *closure)
 802 {
 803         return PyInt_FromLong(get_last_midi_channel(self->mixer));
 804 }
 805
 806
 807 static PyGetSetDef Mixer_getseters[] = {
 808         {"channels_count", (getter)Mixer_get_channels_count, NULL,
 809                 "channels count", NULL},
 810         {"last_midi_channel", (getter)Mixer_get_last_midi_channel, NULL,
 811                 "last midi channel", NULL},
 812         {NULL}
 813 };
 814
 815 static PyObject*
 816 Mixer_add_channel(MixerObject *self, PyObject *args)
 817 {
 818         char *name;
 819         int stereo;
 820         jack_mixer_channel_t channel;
 821
 822         if (! PyArg_ParseTuple(args, "si", &name, &stereo)) return NULL;
 823
 824         channel = add_channel(self->mixer, name, (bool)stereo);
 825
 826         if (channel == NULL) {
 827                 PyErr_SetString(PyExc_RuntimeError, "error adding channel");
 828                 return NULL;
 829         }
 830
 831         return Channel_New(channel);
 832 }
 833
 834 static PyObject*
 835 Mixer_add_output_channel(MixerObject *self, PyObject *args)
 836 {
 837         char *name;
 838         int stereo = 1;
 839         int system = 0;
 840         jack_mixer_output_channel_t channel;
 841
 842         if (! PyArg_ParseTuple(args, "s|bb", &name, &stereo, &system)) return NULL;
 843
 844         channel = add_output_channel(self->mixer, name, (bool)stereo, (bool)system);
 845
 846         return OutputChannel_New(channel);
 847 }
 848
 849 static PyObject*
 850 Mixer_destroy(MixerObject *self, PyObject *args)
 851 {
 852         if (self->mixer) {
 853                 destroy(self->mixer);
 854                 self->mixer = NULL;
 855         }
 856         Py_INCREF(Py_None);
 857         return Py_None;
 858 }
 859
 860 static PyMethodDef Mixer_methods[] = {
 861         {"add_channel", (PyCFunction)Mixer_add_channel, METH_VARARGS, "Add a new channel"},
 862         {"add_output_channel", (PyCFunction)Mixer_add_output_channel, METH_VARARGS, "Add a new output channel"},
 863         {"destroy", (PyCFunction)Mixer_destroy, METH_VARARGS, "Destroy JACK Mixer"},
 864         {"client_name", (PyCFunction)Mixer_get_client_name, METH_VARARGS, "Get jack client name"},
 865 //      {"remove_channel", (PyCFunction)Mixer_remove_channel, METH_VARARGS, "Remove a channel"},
 866         {NULL}
 867 };
 868
 869 static PyTypeObject MixerType = {
 870         PyObject_HEAD_INIT(NULL)
 871         0,       /*ob_size*/
 872         "jack_mixer_c.Mixer",    /*tp_name*/
 873         sizeof(MixerObject), /*tp_basicsize*/
 874         0,       /*tp_itemsize*/
 875         (destructor)Mixer_dealloc,       /*tp_dealloc*/
 876         0,       /*tp_print*/
 877         0,       /*tp_getattr*/
 878         0,       /*tp_setattr*/
 879         0,       /*tp_compare*/
 880         0,       /*tp_repr*/
 881         0,       /*tp_as_number*/
 882         0,       /*tp_as_sequence*/
 883         0,       /*tp_as_mapping*/
 884         0,       /*tp_hash */
 885         0,       /*tp_call*/
 886         0,       /*tp_str*/
 887         0,       /*tp_getattro*/
 888         0,       /*tp_setattro*/
 889         0,       /*tp_as_buffer*/
 890         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 891         "Mixer objects",           /* tp_doc */
 892         0,                         /* tp_traverse */
 893         0,                         /* tp_clear */
 894         0,                         /* tp_richcompare */
 895         0,                         /* tp_weaklistoffset */
 896         0,                         /* tp_iter */
 897         0,                         /* tp_iternext */
 898         Mixer_methods,             /* tp_methods */
 899         Mixer_members,             /* tp_members */
 900         Mixer_getseters,           /* tp_getset */
 901         0,                         /* tp_base */
 902         0,                         /* tp_dict */
 903         0,                         /* tp_descr_get */
 904         0,                         /* tp_descr_set */
 905         0,                         /* tp_dictoffset */
 906         (initproc)Mixer_init,      /* tp_init */
 907         0,                         /* tp_alloc */
 908         Mixer_new,                 /* tp_new */
 909 };
 910
 911
 912 static PyMethodDef jack_mixer_methods[] = {
 913         {NULL}  /* Sentinel */
 914 };
 915
 916
 917
 918 PyMODINIT_FUNC initjack_mixer_c(void)
 919 {
 920         PyObject *m;
 921
 922         if (PyType_Ready(&MixerType) < 0)
 923                 return;
 924         if (PyType_Ready(&ChannelType) < 0)
 925                 return;
 926         if (PyType_Ready(&OutputChannelType) < 0)
 927                 return;
 928         if (PyType_Ready(&ScaleType) < 0)
 929                 return;
 930
 931         m = Py_InitModule3("jack_mixer_c", jack_mixer_methods, "Jack Mixer C Helper Module");
 932
 933         Py_INCREF(&MixerType);
 934         PyModule_AddObject(m, "Mixer", (PyObject*)&MixerType);
 935         Py_INCREF(&ChannelType);
 936         PyModule_AddObject(m, "Channel", (PyObject*)&ChannelType);
 937         Py_INCREF(&OutputChannelType);
 938         PyModule_AddObject(m, "OutputChannel", (PyObject*)&OutputChannelType);
 939         Py_INCREF(&ScaleType);
 940         PyModule_AddObject(m, "Scale", (PyObject*)&ScaleType);
 941 }
 942