2 * This file is part of the libsigrokdecode project.
4 * Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
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, either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
20 #include "libsigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
25 static PyObject *srd_logic_iter(PyObject *self)
30 static PyObject *srd_logic_iternext(PyObject *self)
33 PyObject *py_samplenum, *py_samples;
36 uint8_t probe_samples[SRD_MAX_NUM_PROBES + 1];
38 logic = (srd_logic *)self;
39 if (logic->itercnt >= logic->inbuflen / logic->di->data_unitsize) {
40 /* End iteration loop. */
45 * Convert the bit-packed sample to an array of bytes, with only 0x01
46 * and 0x00 values, so the PD doesn't need to do any bitshifting.
49 /* Get probe bits into the 'sample' variable. */
51 logic->inbuf + logic->itercnt * logic->di->data_unitsize,
52 logic->di->data_unitsize);
54 /* All probe values (required + optional) are pre-set to 42. */
55 memset(probe_samples, 42, logic->di->dec_num_probes);
56 /* TODO: None or -1 in Python would be better. */
59 * Set probe values of specified/used probes to their resp. values.
60 * Unused probe values (those not specified by the user) remain at 42.
62 for (i = 0; i < logic->di->dec_num_probes; i++) {
63 /* A probemap value of -1 means "unused optional probe". */
64 if (logic->di->dec_probemap[i] == -1)
66 probe_samples[i] = sample & (1 << logic->di->dec_probemap[i]) ? 1 : 0;
69 /* Prepare the next samplenum/sample list in this iteration. */
71 PyLong_FromUnsignedLongLong(logic->start_samplenum +
73 PyList_SetItem(logic->sample, 0, py_samplenum);
74 py_samples = PyBytes_FromStringAndSize((const char *)probe_samples,
75 logic->di->dec_num_probes);
76 PyList_SetItem(logic->sample, 1, py_samples);
77 Py_INCREF(logic->sample);
84 SRD_PRIV PyTypeObject srd_logic_type = {
85 PyVarObject_HEAD_INIT(NULL, 0)
86 .tp_name = "srd_logic",
87 .tp_basicsize = sizeof(srd_logic),
88 .tp_flags = Py_TPFLAGS_DEFAULT,
89 .tp_doc = "Sigrokdecode logic sample object",
90 .tp_iter = srd_logic_iter,
91 .tp_iternext = srd_logic_iternext,