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/*
* This file is part of the sigrok project.
*
* Copyright (C) 2012 Bert Vermeulen <bert@biot.com>
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "sigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */
#include "sigrokdecode-internal.h"
#include "config.h"
#include <inttypes.h>
/* This is only used for nicer srd_dbg() output. */
char *OUTPUT_TYPES[] = {
"OUTPUT_ANN",
"OUTPUT_PROTO",
"OUTPUT_BINARY",
};
static int convert_pyobj(struct srd_decoder_instance *di, PyObject *obj,
int *ann_format, char ***ann)
{
PyObject *py_tmp;
struct srd_pd_output *pdo;
int ann_id;
/* Should be a list of [annotation format, [string, ...]] */
if (!PyList_Check(obj) && !PyTuple_Check(obj)) {
srd_err("Protocol decoder %s submitted %s instead of list.",
di->decoder->name, obj->ob_type->tp_name);
return SRD_ERR_PYTHON;
}
/* Should have 2 elements... */
if (PyList_Size(obj) != 2) {
srd_err("Protocol decoder %s submitted annotation list with "
"%d elements instead of 2", di->decoder->name,
PyList_Size(obj));
return SRD_ERR_PYTHON;
}
/*
* The first element should be an integer matching a previously
* registered annotation format.
*/
py_tmp = PyList_GetItem(obj, 0);
if (!PyLong_Check(py_tmp)) {
srd_err("Protocol decoder %s submitted annotation list, but "
"first element was not an integer.", di->decoder->name);
return SRD_ERR_PYTHON;
}
ann_id = PyLong_AsLong(py_tmp);
if (!(pdo = g_slist_nth_data(di->decoder->annotations, ann_id))) {
srd_err("Protocol decoder %s submitted data to unregistered "
"annotation format %d.", di->decoder->name, ann_id);
return SRD_ERR_PYTHON;
}
*ann_format = ann_id;
/* Second element must be a list */
py_tmp = PyList_GetItem(obj, 1);
if (!PyList_Check(py_tmp)) {
srd_err("Protocol decoder %s submitted annotation list, but "
"second element was not a list.", di->decoder->name);
return SRD_ERR_PYTHON;
}
if (py_strlist_to_char(py_tmp, ann) != SRD_OK) {
srd_err("Protocol decoder %s submitted annotation list, but "
"second element was malformed.", di->decoder->name);
return SRD_ERR_PYTHON;
}
return SRD_OK;
}
static PyObject *Decoder_put(PyObject *self, PyObject *args)
{
GSList *l;
PyObject *data, *py_res;
struct srd_decoder_instance *di, *next_di;
struct srd_pd_output *pdo;
struct srd_proto_data *pdata;
uint64_t start_sample, end_sample;
int output_id;
void (*cb)();
if (!(di = srd_instance_find_by_obj(NULL, self))) {
/* Shouldn't happen. */
srd_dbg("put(): self instance not found.");
return NULL;
}
if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample,
&output_id, &data)) {
/*
* This throws an exception, but by returning NULL here we let
* Python raise it. This results in a much better trace in
* controller.c on the decode() method call.
*/
return NULL;
}
if (!(l = g_slist_nth(di->pd_output, output_id))) {
srd_err("Protocol decoder %s submitted invalid output ID %d.",
di->decoder->name, output_id);
return NULL;
}
pdo = l->data;
srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on oid %d.",
di->instance_id, start_sample, end_sample,
OUTPUT_TYPES[pdo->output_type], output_id);
if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data)))) {
srd_err("Failed to g_malloc() struct srd_proto_data.");
return NULL;
}
pdata->start_sample = start_sample;
pdata->end_sample = end_sample;
pdata->pdo = pdo;
switch (pdo->output_type) {
case SRD_OUTPUT_ANN:
/* Annotations are only fed to callbacks. */
if ((cb = srd_find_callback(pdo->output_type))) {
/* Annotations need converting from PyObject. */
if (convert_pyobj(di, data, &pdata->ann_format,
(char ***)&pdata->data) != SRD_OK) {
/* An error was already logged. */
break;
}
cb(pdata);
}
break;
case SRD_OUTPUT_PROTO:
for (l = di->next_di; l; l = l->next) {
next_di = l->data;
/* TODO: is this needed? */
Py_XINCREF(next_di->py_instance);
srd_spew("Sending %d-%d to instance %s",
start_sample, end_sample,
next_di->instance_id);
if (!(py_res = PyObject_CallMethod(
next_di->py_instance, "decode", "KKO", start_sample,
end_sample, data))) {
catch_exception("calling %s decode(): ",
next_di->instance_id);
}
Py_XDECREF(py_res);
}
break;
case SRD_OUTPUT_BINARY:
srd_err("SRD_OUTPUT_BINARY not yet supported.");
break;
default:
srd_err("Protocol decoder %s submitted invalid output type %d.",
di->decoder->name, pdo->output_type);
break;
}
g_free(pdata);
Py_RETURN_NONE;
}
static PyObject *Decoder_add(PyObject *self, PyObject *args)
{
PyObject *ret;
struct srd_decoder_instance *di;
char *proto_id;
int output_type, pdo_id;
if (!(di = srd_instance_find_by_obj(NULL, self))) {
PyErr_SetString(PyExc_Exception, "decoder instance not found");
return NULL;
}
if (!PyArg_ParseTuple(args, "is", &output_type, &proto_id)) {
/* Let Python raise this exception. */
return NULL;
}
pdo_id = pd_add(di, output_type, proto_id);
if (pdo_id < 0)
Py_RETURN_NONE;
else
ret = Py_BuildValue("i", pdo_id);
return ret;
}
static PyMethodDef Decoder_methods[] = {
{"put", Decoder_put, METH_VARARGS,
"Accepts a dictionary with the following keys: startsample, endsample, data"},
{"add", Decoder_add, METH_VARARGS, "Create a new output stream"},
{NULL, NULL, 0, NULL}
};
SRD_PRIV PyTypeObject srd_Decoder_type = {
PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "sigrokdecode.Decoder",
.tp_basicsize = sizeof(srd_Decoder),
.tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
.tp_doc = "Sigrok Decoder base class",
.tp_methods = Decoder_methods,
};
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