/*
- * This file is part of the sigrok project.
+ * This file is part of the libsigrokdecode project.
*
* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
*
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-#include "sigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
+#include "libsigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
#include "config.h"
#include <inttypes.h>
#include <string.h>
static PyObject *srd_logic_iternext(PyObject *self)
{
- int i;
- PyObject *py_samplenum, *py_samples;
srd_logic *logic;
- uint64_t sample;
- unsigned char probe_samples[SRD_MAX_NUM_PROBES];
+ PyObject *py_samplenum, *py_samples;
+ uint8_t *sample_pos, sample;
+ int byte_offset, bit_offset, i;
logic = (srd_logic *)self;
if (logic->itercnt >= logic->inbuflen / logic->di->data_unitsize) {
* Convert the bit-packed sample to an array of bytes, with only 0x01
* and 0x00 values, so the PD doesn't need to do any bitshifting.
*/
- memcpy(&sample,
- logic->inbuf + logic->itercnt * logic->di->data_unitsize,
- logic->di->data_unitsize);
- for (i = 0; i < logic->di->dec_num_probes; i++)
- probe_samples[i] =
- sample & (1 << logic->di->dec_probemap[i]) ? 1 : 0;
+ sample_pos = logic->inbuf + logic->itercnt * logic->di->data_unitsize;
+ for (i = 0; i < logic->di->dec_num_probes; i++) {
+ /* A probemap value of -1 means "unused optional probe". */
+ if (logic->di->dec_probemap[i] == -1) {
+ /* Value of unused probe is 0xff, instead of 0 or 1. */
+ logic->di->probe_samples[i] = 0xff;
+ } else {
+ byte_offset = logic->di->dec_probemap[i] / 8;
+ bit_offset = logic->di->dec_probemap[i] % 8;
+ sample = *(sample_pos + byte_offset) & (1 << bit_offset) ? 1 : 0;
+ logic->di->probe_samples[i] = sample;
+ }
+ }
/* Prepare the next samplenum/sample list in this iteration. */
py_samplenum =
PyLong_FromUnsignedLongLong(logic->start_samplenum +
logic->itercnt);
PyList_SetItem(logic->sample, 0, py_samplenum);
- py_samples = PyBytes_FromStringAndSize((const char *)probe_samples,
+ py_samples = PyBytes_FromStringAndSize((const char *)logic->di->probe_samples,
logic->di->dec_num_probes);
PyList_SetItem(logic->sample, 1, py_samples);
Py_INCREF(logic->sample);
return logic->sample;
}
+/** @cond PRIVATE */
SRD_PRIV PyTypeObject srd_logic_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "srd_logic",
.tp_iter = srd_logic_iter,
.tp_iternext = srd_logic_iternext,
};
+/** @endcond */