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. */
21 #include "libsigrokdecode-internal.h"
25 /* This is only used for nicer srd_dbg() output. */
26 static const char *OUTPUT_TYPES[] = {
32 static int convert_annotation(struct srd_decoder_inst *di, PyObject *obj,
33 struct srd_proto_data *pdata)
36 struct srd_pd_output *pdo;
37 struct srd_proto_data_annotation *pda;
41 /* Should be a list of [annotation format, [string, ...]]. */
42 if (!PyList_Check(obj) && !PyTuple_Check(obj)) {
43 srd_err("Protocol decoder %s submitted %s instead of list.",
44 di->decoder->name, obj->ob_type->tp_name);
45 return SRD_ERR_PYTHON;
48 /* Should have 2 elements. */
49 if (PyList_Size(obj) != 2) {
50 srd_err("Protocol decoder %s submitted annotation list with "
51 "%d elements instead of 2", di->decoder->name,
53 return SRD_ERR_PYTHON;
57 * The first element should be an integer matching a previously
58 * registered annotation format.
60 py_tmp = PyList_GetItem(obj, 0);
61 if (!PyLong_Check(py_tmp)) {
62 srd_err("Protocol decoder %s submitted annotation list, but "
63 "first element was not an integer.", di->decoder->name);
64 return SRD_ERR_PYTHON;
66 ann_format = PyLong_AsLong(py_tmp);
67 if (!(pdo = g_slist_nth_data(di->decoder->annotations, ann_format))) {
68 srd_err("Protocol decoder %s submitted data to unregistered "
69 "annotation format %d.", di->decoder->name, ann_format);
70 return SRD_ERR_PYTHON;
73 /* Second element must be a list. */
74 py_tmp = PyList_GetItem(obj, 1);
75 if (!PyList_Check(py_tmp)) {
76 srd_err("Protocol decoder %s submitted annotation list, but "
77 "second element was not a list.", di->decoder->name);
78 return SRD_ERR_PYTHON;
80 if (py_strlist_to_char(py_tmp, &ann_text) != SRD_OK) {
81 srd_err("Protocol decoder %s submitted annotation list, but "
82 "second element was malformed.", di->decoder->name);
83 return SRD_ERR_PYTHON;
86 if (!(pda = g_try_malloc(sizeof(struct srd_proto_data_annotation))))
87 return SRD_ERR_MALLOC;
88 pda->ann_format = ann_format;
89 pda->ann_text = ann_text;
95 static PyObject *Decoder_put(PyObject *self, PyObject *args)
98 PyObject *py_data, *py_res;
99 struct srd_decoder_inst *di, *next_di;
100 struct srd_pd_output *pdo;
101 struct srd_proto_data *pdata;
102 uint64_t start_sample, end_sample;
104 struct srd_pd_callback *cb;
106 if (!(di = srd_inst_find_by_obj(NULL, self))) {
107 /* Shouldn't happen. */
108 srd_dbg("put(): self instance not found.");
112 if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample,
113 &output_id, &py_data)) {
115 * This throws an exception, but by returning NULL here we let
116 * Python raise it. This results in a much better trace in
117 * controller.c on the decode() method call.
122 if (!(l = g_slist_nth(di->pd_output, output_id))) {
123 srd_err("Protocol decoder %s submitted invalid output ID %d.",
124 di->decoder->name, output_id);
129 srd_spew("Instance %s put %" PRIu64 "-%" PRIu64 " %s on oid %d.",
130 di->inst_id, start_sample, end_sample,
131 OUTPUT_TYPES[pdo->output_type], output_id);
133 if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data)))) {
134 srd_err("Failed to g_malloc() struct srd_proto_data.");
137 pdata->start_sample = start_sample;
138 pdata->end_sample = end_sample;
141 switch (pdo->output_type) {
143 /* Annotations are only fed to callbacks. */
144 if ((cb = srd_pd_output_callback_find(di->sess, pdo->output_type))) {
145 /* Annotations need converting from PyObject. */
146 if (convert_annotation(di, py_data, pdata) != SRD_OK) {
147 /* An error was already logged. */
150 cb->cb(pdata, cb->cb_data);
153 case SRD_OUTPUT_PYTHON:
154 for (l = di->next_di; l; l = l->next) {
156 /* TODO: Is this needed? */
157 Py_XINCREF(next_di->py_inst);
158 srd_spew("Sending %d-%d to instance %s",
159 start_sample, end_sample,
161 if (!(py_res = PyObject_CallMethod(
162 next_di->py_inst, "decode", "KKO", start_sample,
163 end_sample, py_data))) {
164 srd_exception_catch("Calling %s decode(): ",
170 case SRD_OUTPUT_BINARY:
171 srd_err("SRD_OUTPUT_BINARY not yet supported.");
174 srd_err("Protocol decoder %s submitted invalid output type %d.",
175 di->decoder->name, pdo->output_type);
184 static PyObject *Decoder_add(PyObject *self, PyObject *args)
187 struct srd_decoder_inst *di;
189 int output_type, pdo_id;
191 if (!(di = srd_inst_find_by_obj(NULL, self))) {
192 PyErr_SetString(PyExc_Exception, "decoder instance not found");
196 if (!PyArg_ParseTuple(args, "is", &output_type, &proto_id)) {
197 /* Let Python raise this exception. */
201 pdo_id = srd_inst_pd_output_add(di, output_type, proto_id);
205 ret = Py_BuildValue("i", pdo_id);
210 static PyMethodDef Decoder_methods[] = {
211 {"put", Decoder_put, METH_VARARGS,
212 "Accepts a dictionary with the following keys: startsample, endsample, data"},
213 {"add", Decoder_add, METH_VARARGS, "Create a new output stream"},
214 {NULL, NULL, 0, NULL}
218 SRD_PRIV PyTypeObject srd_Decoder_type = {
219 PyVarObject_HEAD_INIT(NULL, 0)
220 .tp_name = "sigrokdecode.Decoder",
221 .tp_basicsize = sizeof(srd_Decoder),
222 .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
223 .tp_doc = "sigrok Decoder base class",
224 .tp_methods = Decoder_methods,