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_mute(ChannelObject *self, void *closure)
 237 {
 238         PyObject *result;
 239
 240         if (channel_is_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_mute(ChannelObject *self, PyObject *value, void *closure)
 251 {
 252         if (value == Py_True) {
 253                 channel_mute(self->channel);
 254         } else {
 255                 channel_unmute(self->channel);
 256         }
 257         return 0;
 258 }
 259
 260 static PyObject*
 261 Channel_get_solo(ChannelObject *self, void *closure)
 262 {
 263         PyObject *result;
 264
 265         if (channel_is_soloed(self->channel)) {
 266                 result = Py_True;
 267         } else {
 268                 result = Py_False;
 269         }
 270         Py_INCREF(result);
 271         return result;
 272 }
 273
 274 static int
 275 Channel_set_solo(ChannelObject *self, PyObject *value, void *closure)
 276 {
 277         if (value == Py_True) {
 278                 channel_solo(self->channel);
 279         } else {
 280                 channel_unsolo(self->channel);
 281         }
 282         return 0;
 283 }
 284
 285 static PyObject*
 286 Channel_get_meter(ChannelObject *self, void *closure)
 287 {
 288         PyObject *result;
 289         double left, right;
 290
 291         if (channel_is_stereo(self->channel)) {
 292                 result = PyTuple_New(2);
 293                 channel_stereo_meter_read(self->channel, &left, &right);
 294                 PyTuple_SetItem(result, 0, PyFloat_FromDouble(left));
 295                 PyTuple_SetItem(result, 1, PyFloat_FromDouble(right));
 296         } else {
 297                 result = PyTuple_New(1);
 298                 channel_mono_meter_read(self->channel, &left);
 299                 PyTuple_SetItem(result, 0, PyFloat_FromDouble(left));
 300         }
 301         return result;
 302 }
 303
 304 static PyObject*
 305 Channel_get_abspeak(ChannelObject *self, void *closure)
 306 {
 307         return PyFloat_FromDouble(channel_abspeak_read(self->channel));
 308 }
 309
 310 static int
 311 Channel_set_abspeak(ChannelObject *self, PyObject *value, void *closure)
 312 {
 313         if (value != Py_None) {
 314                 fprintf(stderr, "abspeak can only be reset (set to None)\n");
 315                 return -1;
 316         }
 317         channel_abspeak_reset(self->channel);
 318         return 0;
 319 }
 320
 321 static int
 322 Channel_set_midi_scale(ChannelObject *self, PyObject *value, void *closure)
 323 {
 324         ScaleObject *scale_object = (ScaleObject*)value; /* XXX: check */
 325
 326         channel_set_midi_scale(self->channel, scale_object->scale);
 327         return 0;
 328 }
 329
 330
 331 static PyObject*
 332 Channel_get_midi_change_callback(ChannelObject *self, void *closure)
 333 {
 334         if (self->midi_change_callback) {
 335                 Py_INCREF(self->midi_change_callback);
 336                 return self->midi_change_callback;
 337         } else {
 338                 Py_INCREF(Py_None);
 339                 return Py_None;
 340         }
 341 }
 342
 343 static void
 344 channel_midi_callback(void *userdata)
 345 {
 346         ChannelObject *self = (ChannelObject*)userdata;
 347         PyGILState_STATE gstate;
 348
 349         gstate = PyGILState_Ensure();
 350         PyObject_CallObject(self->midi_change_callback, NULL);
 351         PyGILState_Release(gstate);
 352 }
 353
 354 static int
 355 Channel_set_midi_change_callback(ChannelObject *self, PyObject *value, void *closure)
 356 {
 357         if (value == Py_None) {
 358                 self->midi_change_callback = NULL;
 359                 channel_set_midi_change_callback(self->channel, NULL, NULL);
 360         } else {
 361                 if (!PyCallable_Check(value)) {
 362                         PyErr_SetString(PyExc_TypeError, "value must be callable");
 363                         return -1;
 364                 }
 365                 if (self->midi_change_callback) {
 366                         Py_XDECREF(self->midi_change_callback);
 367                 }
 368                 Py_INCREF(value);
 369                 self->midi_change_callback = value;
 370                 channel_set_midi_change_callback(self->channel,
 371                                 channel_midi_callback, self);
 372         }
 373
 374         return 0;
 375 }
 376
 377 static PyObject*
 378 Channel_get_name(ChannelObject *self, void *closure)
 379 {
 380         return PyString_FromString(channel_get_name(self->channel));
 381 }
 382
 383 static int
 384 Channel_set_name(ChannelObject *self, PyObject *value, void *closure)
 385 {
 386         channel_rename(self->channel, PyString_AsString(value));
 387         return 0;
 388 }
 389
 390 static PyObject*
 391 Channel_get_balance_midi_cc(ChannelObject *self, void *closure)
 392 {
 393         return PyInt_FromLong(channel_get_balance_midi_cc(self->channel));
 394 }
 395
 396 static int
 397 Channel_set_balance_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_balance_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_volume_midi_cc(ChannelObject *self, void *closure)
 417 {
 418         return PyInt_FromLong(channel_get_volume_midi_cc(self->channel));
 419 }
 420
 421 static int
 422 Channel_set_volume_midi_cc(ChannelObject *self, PyObject *value, void *closure)
 423 {
 424         unsigned int new_cc;
 425         unsigned int result;
 426
 427         new_cc = PyInt_AsLong(value);
 428         result = channel_set_volume_midi_cc(self->channel, new_cc);
 429         if (result == 0) {
 430                 return 0;
 431         }
 432         if (result == 1) {
 433                 PyErr_SetString(PyExc_RuntimeError, "value already in use");
 434         } else if (result == 2) {
 435                 PyErr_SetString(PyExc_RuntimeError, "value out of range");
 436         }
 437         return -1;
 438 }
 439
 440 static PyObject*
 441 Channel_get_midi_in_got_events(ChannelObject *self, void *closure)
 442 {
 443         PyObject *result;
 444
 445         if (channel_get_midi_in_got_events(self->channel)) {
 446                 result = Py_True;
 447         } else {
 448                 result = Py_False;
 449         }
 450         Py_INCREF(result);
 451         return result;
 452 }
 453
 454
 455 static PyGetSetDef Channel_getseters[] = {
 456         {"is_stereo",
 457                 (getter)Channel_get_is_stereo, NULL,
 458                 "mono/stereo", NULL},
 459         {"volume",
 460                 (getter)Channel_get_volume, (setter)Channel_set_volume,
 461                 "volume", NULL},
 462         {"balance",
 463                 (getter)Channel_get_balance, (setter)Channel_set_balance,
 464                 "balance", NULL},
 465         {"mute",
 466                 (getter)Channel_get_mute, (setter)Channel_set_mute,
 467                 "mute", NULL},
 468         {"solo",
 469                 (getter)Channel_get_solo, (setter)Channel_set_solo,
 470                 "solo", NULL},
 471         {"meter",
 472                 (getter)Channel_get_meter, NULL,
 473                 "meter", NULL},
 474         {"abspeak",
 475                 (getter)Channel_get_abspeak, (setter)Channel_set_abspeak,
 476                 "balance", NULL},
 477         {"midi_scale",
 478                 NULL, (setter)Channel_set_midi_scale,
 479                 "midi scale", NULL},
 480         {"midi_change_callback",
 481                 (getter)Channel_get_midi_change_callback,
 482                 (setter)Channel_set_midi_change_callback,
 483                 "midi change callback", NULL},
 484         {"name",
 485                 (getter)Channel_get_name,
 486                 (setter)Channel_set_name,
 487                 "name", NULL},
 488         {"balance_midi_cc",
 489                 (getter)Channel_get_balance_midi_cc,
 490                 (setter)Channel_set_balance_midi_cc,
 491                 "Balance MIDI CC", NULL},
 492         {"volume_midi_cc",
 493                 (getter)Channel_get_volume_midi_cc,
 494                 (setter)Channel_set_volume_midi_cc,
 495                 "Volume MIDI CC", NULL},
 496         {"midi_in_got_events",
 497                 (getter)Channel_get_midi_in_got_events, NULL,
 498                 "Got new MIDI IN events", NULL},
 499         {NULL}
 500 };
 501
 502 static PyObject*
 503 Channel_remove(ChannelObject *self, PyObject *args)
 504 {
 505         if (! PyArg_ParseTuple(args, "")) return NULL;
 506         remove_channel(self->channel);
 507         Py_INCREF(Py_None);
 508         return Py_None;
 509 }
 510
 511 static PyObject*
 512 Channel_autoset_midi_cc(ChannelObject *self, PyObject *args)
 513 {
 514         if (! PyArg_ParseTuple(args, "")) return NULL;
 515         channel_autoset_midi_cc(self->channel);
 516         Py_INCREF(Py_None);
 517         return Py_None;
 518 }
 519
 520 static PyMethodDef channel_methods[] = {
 521         {"remove", (PyCFunction)Channel_remove, METH_VARARGS, "Remove"},
 522         {"autoset_midi_cc", (PyCFunction)Channel_autoset_midi_cc, METH_VARARGS, "Autoset MIDI CC"},
 523         {NULL}
 524 };
 525
 526 static PyTypeObject ChannelType = {
 527         PyObject_HEAD_INIT(NULL)
 528         0,       /*ob_size*/
 529         "jack_mixer_c.Channel",    /*tp_name*/
 530         sizeof(ChannelObject), /*tp_basicsize*/
 531         0,       /*tp_itemsize*/
 532         (destructor)Channel_dealloc,       /*tp_dealloc*/
 533         0,       /*tp_print*/
 534         0,       /*tp_getattr*/
 535         0,       /*tp_setattr*/
 536         0,       /*tp_compare*/
 537         0,       /*tp_repr*/
 538         0,       /*tp_as_number*/
 539         0,       /*tp_as_sequence*/
 540         0,       /*tp_as_mapping*/
 541         0,       /*tp_hash */
 542         0,       /*tp_call*/
 543         0,       /*tp_str*/
 544         0,       /*tp_getattro*/
 545         0,       /*tp_setattro*/
 546         0,       /*tp_as_buffer*/
 547         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 548         "Channel objects",           /* tp_doc */
 549         0,                         /* tp_traverse */
 550         0,                         /* tp_clear */
 551         0,                         /* tp_richcompare */
 552         0,                         /* tp_weaklistoffset */
 553         0,                         /* tp_iter */
 554         0,                         /* tp_iternext */
 555         channel_methods,           /* tp_methods */
 556         0,             /* tp_members */
 557         Channel_getseters,           /* tp_getset */
 558         0,                         /* tp_base */
 559         0,                         /* tp_dict */
 560         0,                         /* tp_descr_get */
 561         0,                         /* tp_descr_set */
 562         0,                         /* tp_dictoffset */
 563         (initproc)Channel_init,    /* tp_init */
 564         0,                         /* tp_alloc */
 565         Channel_new,                 /* tp_new */
 566 };
 567
 568 static PyObject*
 569 Channel_New(jack_mixer_channel_t channel)
 570 {
 571         ChannelObject *self;
 572         self = (ChannelObject*)PyObject_NEW(ChannelObject, &ChannelType);
 573         if (self != NULL) {
 574                 self->channel = channel;
 575                 self->midi_change_callback = NULL;
 576         }
 577         return (PyObject*)self;
 578 }
 579
 580 /** Output Channel Type **/
 581
 582 typedef struct {
 583         PyObject_HEAD
 584         PyObject *midi_change_callback;
 585         jack_mixer_output_channel_t *output_channel;
 586 } OutputChannelObject;
 587
 588 static int
 589 OutputChannel_set_prefader(OutputChannelObject *self, PyObject *value, void *closure)
 590 {
 591         if (value == Py_True) {
 592                 output_channel_set_prefader(self->output_channel, true);
 593         } else {
 594                 output_channel_set_prefader(self->output_channel, false);
 595         }
 596         return 0;
 597 }
 598
 599 static PyObject*
 600 OutputChannel_get_prefader(OutputChannelObject *self, void *closure)
 601 {
 602         PyObject *result;
 603
 604         if (output_channel_is_prefader(self->output_channel)) {
 605                 result = Py_True;
 606         } else {
 607                 result = Py_False;
 608         }
 609         Py_INCREF(result);
 610         return result;
 611 }
 612
 613 static PyGetSetDef OutputChannel_getseters[] = {
 614         {"prefader",
 615                 (getter)OutputChannel_get_prefader, (setter)OutputChannel_set_prefader,
 616                 "prefader", NULL},
 617         {NULL}
 618 };
 619
 620 static PyObject*
 621 OutputChannel_remove(OutputChannelObject *self, PyObject *args)
 622 {
 623         if (! PyArg_ParseTuple(args, "")) return NULL;
 624         remove_output_channel(self->output_channel);
 625         Py_INCREF(Py_None);
 626         return Py_None;
 627 }
 628
 629 static PyObject*
 630 OutputChannel_set_solo(OutputChannelObject *self, PyObject *args)
 631 {
 632         PyObject *channel;
 633         unsigned char solo;
 634
 635         if (! PyArg_ParseTuple(args, "Ob", &channel, &solo)) return NULL;
 636
 637         output_channel_set_solo(self->output_channel,
 638                         ((ChannelObject*)channel)->channel,
 639                         solo);
 640
 641         Py_INCREF(Py_None);
 642         return Py_None;
 643 }
 644
 645 static PyObject*
 646 OutputChannel_set_muted(OutputChannelObject *self, PyObject *args)
 647 {
 648         PyObject *channel;
 649         unsigned char muted;
 650
 651         if (! PyArg_ParseTuple(args, "Ob", &channel, &muted)) return NULL;
 652
 653         output_channel_set_muted(self->output_channel,
 654                         ((ChannelObject*)channel)->channel,
 655                         muted);
 656
 657         Py_INCREF(Py_None);
 658         return Py_None;
 659 }
 660
 661 static PyObject*
 662 OutputChannel_is_solo(OutputChannelObject *self, PyObject *args)
 663 {
 664         PyObject *channel;
 665         PyObject *result;
 666
 667         if (! PyArg_ParseTuple(args, "O", &channel)) return NULL;
 668
 669         if (output_channel_is_solo(self->output_channel,
 670                         ((ChannelObject*)channel)->channel)) {
 671                 result = Py_True;
 672         } else {
 673                 result = Py_False;
 674         }
 675
 676         Py_INCREF(result);
 677         return result;
 678 }
 679
 680 static PyObject*
 681 OutputChannel_is_muted(OutputChannelObject *self, PyObject *args)
 682 {
 683         PyObject *channel;
 684         PyObject *result;
 685
 686         if (! PyArg_ParseTuple(args, "O", &channel)) return NULL;
 687
 688         if (output_channel_is_muted(self->output_channel,
 689                         ((ChannelObject*)channel)->channel)) {
 690                 result = Py_True;
 691         } else {
 692                 result = Py_False;
 693         }
 694
 695         Py_INCREF(result);
 696         return result;
 697 }
 698
 699 static PyMethodDef output_channel_methods[] = {
 700         {"remove", (PyCFunction)OutputChannel_remove, METH_VARARGS, "Remove"},
 701         {"set_solo", (PyCFunction)OutputChannel_set_solo, METH_VARARGS, "Set a channel as solo"},
 702         {"set_muted", (PyCFunction)OutputChannel_set_muted, METH_VARARGS, "Set a channel as muted"},
 703         {"is_solo", (PyCFunction)OutputChannel_is_solo, METH_VARARGS, "Is a channel set as solo"},
 704         {"is_muted", (PyCFunction)OutputChannel_is_muted, METH_VARARGS, "Is a channel set as muted"},
 705         {NULL}
 706 };
 707
 708 static PyTypeObject OutputChannelType = {
 709         PyObject_HEAD_INIT(NULL)
 710         0,       /*ob_size*/
 711         "jack_mixer_c.OutputChannel",    /*tp_name*/
 712         sizeof(OutputChannelObject), /*tp_basicsize*/
 713         0,       /*tp_itemsize*/
 714         0,       /*tp_dealloc*/
 715         0,       /*tp_print*/
 716         0,       /*tp_getattr*/
 717         0,       /*tp_setattr*/
 718         0,       /*tp_compare*/
 719         0,       /*tp_repr*/
 720         0,       /*tp_as_number*/
 721         0,       /*tp_as_sequence*/
 722         0,       /*tp_as_mapping*/
 723         0,       /*tp_hash */
 724         0,       /*tp_call*/
 725         0,       /*tp_str*/
 726         0,       /*tp_getattro*/
 727         0,       /*tp_setattro*/
 728         0,       /*tp_as_buffer*/
 729         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 730         "Output Channel objects",           /* tp_doc */
 731         0,                         /* tp_traverse */
 732         0,                         /* tp_clear */
 733         0,                         /* tp_richcompare */
 734         0,                         /* tp_weaklistoffset */
 735         0,                         /* tp_iter */
 736         0,                         /* tp_iternext */
 737         output_channel_methods,    /* tp_methods */
 738         0,             /* tp_members */
 739         OutputChannel_getseters,   /* tp_getset */
 740         &ChannelType,              /* tp_base */
 741         0,                         /* tp_dict */
 742         0,                         /* tp_descr_get */
 743         0,                         /* tp_descr_set */
 744         0,                         /* tp_dictoffset */
 745         0,                         /* tp_init */
 746         0,                         /* tp_alloc */
 747         0,                         /* tp_new */
 748 };
 749
 750 static PyObject*
 751 OutputChannel_New(jack_mixer_output_channel_t output_channel)
 752 {
 753         OutputChannelObject *self;
 754         self = (OutputChannelObject*)PyObject_NEW(OutputChannelObject, &OutputChannelType);
 755         if (self != NULL) {
 756                 self->midi_change_callback = NULL;
 757                 self->output_channel = output_channel;
 758         }
 759         return (PyObject*)self;
 760 }
 761
 762
 763 /** Mixer Type **/
 764
 765 typedef struct {
 766         PyObject_HEAD
 767         PyObject *main_mix_channel;
 768         jack_mixer_t mixer;
 769 } MixerObject;
 770
 771 static void
 772 Mixer_dealloc(MixerObject *self)
 773 {
 774         Py_XDECREF(self->main_mix_channel);
 775         if (self->mixer)
 776                 destroy(self->mixer);
 777         self->ob_type->tp_free((PyObject*)self);
 778 }
 779
 780 static PyObject*
 781 Mixer_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
 782 {
 783         MixerObject *self;
 784
 785         self = (MixerObject*)type->tp_alloc(type, 0);
 786
 787         if (self != NULL) {
 788                 self->main_mix_channel = NULL;
 789                 self->mixer = NULL;
 790         }
 791
 792         return (PyObject*)self;
 793 }
 794
 795 static int
 796 Mixer_init(MixerObject *self, PyObject *args, PyObject *kwds)
 797 {
 798         static char *kwlist[] = {"name", NULL};
 799         char *name;
 800
 801         if (!PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist, &name))
 802                 return -1;
 803
 804         self->mixer = create(name);
 805         if (self->mixer == NULL) {
 806                 PyErr_SetString(PyExc_RuntimeError,
 807                                 "error creating mixer, probably jack is not running");
 808                 return -1;
 809         }
 810
 811         self->main_mix_channel = Channel_New(get_main_mix_channel(self->mixer));
 812
 813         return 0;
 814 }
 815
 816 static PyMemberDef Mixer_members[] = {
 817         {"main_mix_channel", T_OBJECT, offsetof(MixerObject, main_mix_channel), 0, "main_mix_channel"},
 818         {NULL}
 819 };
 820
 821 static PyObject*
 822 Mixer_get_channels_count(MixerObject *self, void *closure)
 823 {
 824         return PyInt_FromLong(get_channels_count(self->mixer));
 825 }
 826
 827 static PyObject*
 828 Mixer_get_last_midi_channel(MixerObject *self, void *closure)
 829 {
 830         return PyInt_FromLong(get_last_midi_channel(self->mixer));
 831 }
 832
 833
 834 static PyGetSetDef Mixer_getseters[] = {
 835         {"channels_count", (getter)Mixer_get_channels_count, NULL,
 836                 "channels count", NULL},
 837         {"last_midi_channel", (getter)Mixer_get_last_midi_channel, NULL,
 838                 "last midi channel", NULL},
 839         {NULL}
 840 };
 841
 842 static PyObject*
 843 Mixer_add_channel(MixerObject *self, PyObject *args)
 844 {
 845         char *name;
 846         int stereo;
 847         jack_mixer_channel_t channel;
 848
 849         if (! PyArg_ParseTuple(args, "si", &name, &stereo)) return NULL;
 850
 851         channel = add_channel(self->mixer, name, (bool)stereo);
 852
 853         if (channel == NULL) {
 854                 PyErr_SetString(PyExc_RuntimeError, "error adding channel");
 855                 return NULL;
 856         }
 857
 858         return Channel_New(channel);
 859 }
 860
 861 static PyObject*
 862 Mixer_add_output_channel(MixerObject *self, PyObject *args)
 863 {
 864         char *name;
 865         int stereo = 1;
 866         int system = 0;
 867         jack_mixer_output_channel_t channel;
 868
 869         if (! PyArg_ParseTuple(args, "s|bb", &name, &stereo, &system)) return NULL;
 870
 871         channel = add_output_channel(self->mixer, name, (bool)stereo, (bool)system);
 872
 873         return OutputChannel_New(channel);
 874 }
 875
 876 static PyObject*
 877 Mixer_destroy(MixerObject *self, PyObject *args)
 878 {
 879         if (self->mixer) {
 880                 destroy(self->mixer);
 881                 self->mixer = NULL;
 882         }
 883         Py_INCREF(Py_None);
 884         return Py_None;
 885 }
 886
 887 static PyMethodDef Mixer_methods[] = {
 888         {"add_channel", (PyCFunction)Mixer_add_channel, METH_VARARGS, "Add a new channel"},
 889         {"add_output_channel", (PyCFunction)Mixer_add_output_channel, METH_VARARGS, "Add a new output channel"},
 890         {"destroy", (PyCFunction)Mixer_destroy, METH_VARARGS, "Destroy JACK Mixer"},
 891 //      {"remove_channel", (PyCFunction)Mixer_remove_channel, METH_VARARGS, "Remove a channel"},
 892         {NULL}
 893 };
 894
 895 static PyTypeObject MixerType = {
 896         PyObject_HEAD_INIT(NULL)
 897         0,       /*ob_size*/
 898         "jack_mixer_c.Mixer",    /*tp_name*/
 899         sizeof(MixerObject), /*tp_basicsize*/
 900         0,       /*tp_itemsize*/
 901         (destructor)Mixer_dealloc,       /*tp_dealloc*/
 902         0,       /*tp_print*/
 903         0,       /*tp_getattr*/
 904         0,       /*tp_setattr*/
 905         0,       /*tp_compare*/
 906         0,       /*tp_repr*/
 907         0,       /*tp_as_number*/
 908         0,       /*tp_as_sequence*/
 909         0,       /*tp_as_mapping*/
 910         0,       /*tp_hash */
 911         0,       /*tp_call*/
 912         0,       /*tp_str*/
 913         0,       /*tp_getattro*/
 914         0,       /*tp_setattro*/
 915         0,       /*tp_as_buffer*/
 916         Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,  /*tp_flags*/
 917         "Mixer objects",           /* tp_doc */
 918         0,                         /* tp_traverse */
 919         0,                         /* tp_clear */
 920         0,                         /* tp_richcompare */
 921         0,                         /* tp_weaklistoffset */
 922         0,                         /* tp_iter */
 923         0,                         /* tp_iternext */
 924         Mixer_methods,             /* tp_methods */
 925         Mixer_members,             /* tp_members */
 926         Mixer_getseters,           /* tp_getset */
 927         0,                         /* tp_base */
 928         0,                         /* tp_dict */
 929         0,                         /* tp_descr_get */
 930         0,                         /* tp_descr_set */
 931         0,                         /* tp_dictoffset */
 932         (initproc)Mixer_init,      /* tp_init */
 933         0,                         /* tp_alloc */
 934         Mixer_new,                 /* tp_new */
 935 };
 936
 937
 938 static PyMethodDef jack_mixer_methods[] = {
 939         {NULL}  /* Sentinel */
 940 };
 941
 942
 943
 944 PyMODINIT_FUNC initjack_mixer_c(void)
 945 {
 946         PyObject *m;
 947
 948         if (PyType_Ready(&MixerType) < 0)
 949                 return;
 950         if (PyType_Ready(&ChannelType) < 0)
 951                 return;
 952         if (PyType_Ready(&OutputChannelType) < 0)
 953                 return;
 954         if (PyType_Ready(&ScaleType) < 0)
 955                 return;
 956
 957         m = Py_InitModule3("jack_mixer_c", jack_mixer_methods, "Jack Mixer C Helper Module");
 958
 959         Py_INCREF(&MixerType);
 960         PyModule_AddObject(m, "Mixer", (PyObject*)&MixerType);
 961         Py_INCREF(&ChannelType);
 962         PyModule_AddObject(m, "Channel", (PyObject*)&ChannelType);
 963         Py_INCREF(&OutputChannelType);
 964         PyModule_AddObject(m, "OutputChannel", (PyObject*)&OutputChannelType);
 965         Py_INCREF(&ScaleType);
 966         PyModule_AddObject(m, "Scale", (PyObject*)&ScaleType);
 967 }
 968