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1 | /* | |
2 | * This file is part of the sigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
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, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
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. | |
15 | * | |
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/>. | |
18 | */ | |
19 | ||
20 | #include "sigrokdecode.h" /* First, so we avoid a _POSIX_C_SOURCE warning. */ | |
21 | #include "sigrokdecode-internal.h" | |
22 | #include "config.h" | |
23 | ||
24 | /* lives in type_logic.c */ | |
25 | extern PyTypeObject srd_logic_type; | |
26 | ||
27 | ||
28 | static int convert_pyobj(struct srd_decoder_instance *di, PyObject *obj, | |
29 | int *ann_format, char ***ann) | |
30 | { | |
31 | PyObject *py_tmp; | |
32 | struct srd_pd_output *pdo; | |
33 | int ann_id; | |
34 | ||
35 | /* Should be a list of [annotation format, [string, ...]] */ | |
36 | if (!PyList_Check(obj) && !PyTuple_Check(obj)) { | |
37 | srd_err("Protocol decoder %s submitted %s instead of list", | |
38 | di->decoder->name, obj->ob_type->tp_name); | |
39 | return SRD_ERR_PYTHON; | |
40 | } | |
41 | ||
42 | /* Should have 2 elements... */ | |
43 | if (PyList_Size(obj) != 2) { | |
44 | srd_err("Protocol decoder %s submitted annotation list with %d elements instead of 2", | |
45 | di->decoder->name, PyList_Size(obj)); | |
46 | return SRD_ERR_PYTHON; | |
47 | } | |
48 | ||
49 | /* First element should be an integer matching a previously | |
50 | * registered annotation format. */ | |
51 | py_tmp = PyList_GetItem(obj, 0); | |
52 | if (!PyLong_Check(py_tmp)) { | |
53 | srd_err("Protocol decoder %s submitted annotation list, but first element was not an integer", | |
54 | di->decoder->name); | |
55 | return SRD_ERR_PYTHON; | |
56 | } | |
57 | ||
58 | ann_id = PyLong_AsLong(py_tmp); | |
59 | if (!(pdo = g_slist_nth_data(di->decoder->annotations, ann_id))) { | |
60 | srd_err("Protocol decoder %s submitted data to non-existent annotation format %d", | |
61 | di->decoder->name, ann_id); | |
62 | return SRD_ERR_PYTHON; | |
63 | } | |
64 | *ann_format = ann_id; | |
65 | ||
66 | /* Second element must be a list */ | |
67 | py_tmp = PyList_GetItem(obj, 1); | |
68 | if (!PyList_Check(py_tmp)) { | |
69 | srd_err("Protocol decoder %s submitted annotation list, but second element was not a list", | |
70 | di->decoder->name); | |
71 | return SRD_ERR_PYTHON; | |
72 | } | |
73 | if (py_strlist_to_char(py_tmp, ann) != SRD_OK) { | |
74 | srd_err("Protocol decoder %s submitted annotation list, but second element was malformed", | |
75 | di->decoder->name); | |
76 | return SRD_ERR_PYTHON; | |
77 | } | |
78 | ||
79 | return SRD_OK; | |
80 | } | |
81 | ||
82 | static PyObject *Decoder_put(PyObject *self, PyObject *args) | |
83 | { | |
84 | GSList *l; | |
85 | PyObject *data, *py_res; | |
86 | struct srd_decoder_instance *di, *next_di; | |
87 | struct srd_pd_output *pdo; | |
88 | struct srd_proto_data *pdata; | |
89 | uint64_t start_sample, end_sample; | |
90 | int output_id; | |
91 | void (*cb)(); | |
92 | ||
93 | if (!(di = get_di_by_decobject(self))) | |
94 | return NULL; | |
95 | ||
96 | if (!PyArg_ParseTuple(args, "KKiO", &start_sample, &end_sample, &output_id, &data)) | |
97 | return NULL; | |
98 | ||
99 | if (!(l = g_slist_nth(di->pd_output, output_id))) { | |
100 | srd_err("Protocol decoder %s submitted invalid output ID %d", | |
101 | di->decoder->name, output_id); | |
102 | return NULL; | |
103 | } | |
104 | pdo = l->data; | |
105 | ||
106 | if (!(pdata = g_try_malloc0(sizeof(struct srd_proto_data)))) | |
107 | return NULL; | |
108 | pdata->start_sample = start_sample; | |
109 | pdata->end_sample = end_sample; | |
110 | pdata->pdo = pdo; | |
111 | ||
112 | switch (pdo->output_type) { | |
113 | case SRD_OUTPUT_ANN: | |
114 | /* Annotations are only fed to callbacks. */ | |
115 | if ((cb = srd_find_callback(pdo->output_type))) { | |
116 | /* Annotations need converting from PyObject. */ | |
117 | if (convert_pyobj(di, data, &pdata->ann_format, | |
118 | (char ***)&pdata->data) != SRD_OK) { | |
119 | /* An error was already logged. */ | |
120 | break; | |
121 | } | |
122 | cb(pdata); | |
123 | } | |
124 | break; | |
125 | case SRD_OUTPUT_PROTO: | |
126 | for (l = di->next_di; l; l = l->next) { | |
127 | next_di = l->data; | |
128 | /* TODO: is this needed? */ | |
129 | Py_XINCREF(next_di->py_instance); | |
130 | if (!(py_res = PyObject_CallMethod(next_di->py_instance, "decode", | |
131 | "KKO", start_sample, end_sample, data))) { | |
132 | if (PyErr_Occurred()) | |
133 | PyErr_Print(); | |
134 | } | |
135 | Py_XDECREF(py_res); | |
136 | } | |
137 | break; | |
138 | case SRD_OUTPUT_BINARY: | |
139 | srd_err("SRD_OUTPUT_BINARY not yet supported"); | |
140 | break; | |
141 | default: | |
142 | srd_err("Protocol decoder %s submitted invalid output type %d", | |
143 | di->decoder->name, pdo->output_type); | |
144 | break; | |
145 | } | |
146 | ||
147 | g_free(pdata); | |
148 | ||
149 | Py_RETURN_NONE; | |
150 | } | |
151 | ||
152 | ||
153 | static PyObject *Decoder_add(PyObject *self, PyObject *args) | |
154 | { | |
155 | PyObject *ret; | |
156 | struct srd_decoder_instance *di; | |
157 | char *proto_id; | |
158 | int output_type, pdo_id; | |
159 | ||
160 | if (!(di = get_di_by_decobject(self))) { | |
161 | srd_err("%s():%d decoder instance not found", __func__, __LINE__); | |
162 | PyErr_SetString(PyExc_Exception, "decoder instance not found"); | |
163 | return NULL; | |
164 | } | |
165 | ||
166 | if (!PyArg_ParseTuple(args, "is", &output_type, &proto_id)) { | |
167 | if (PyErr_Occurred()) | |
168 | PyErr_Print(); | |
169 | return NULL; | |
170 | } | |
171 | ||
172 | pdo_id = pd_add(di, output_type, proto_id); | |
173 | if (pdo_id < 0) | |
174 | Py_RETURN_NONE; | |
175 | else | |
176 | ret = Py_BuildValue("i", pdo_id); | |
177 | ||
178 | return ret; | |
179 | } | |
180 | ||
181 | static PyMethodDef no_methods[] = { {NULL, NULL, 0, NULL} }; | |
182 | static PyMethodDef Decoder_methods[] = { | |
183 | {"put", Decoder_put, METH_VARARGS, | |
184 | "Accepts a dictionary with the following keys: time, duration, data"}, | |
185 | {"add", Decoder_add, METH_VARARGS, "Create a new output stream"}, | |
186 | {NULL, NULL, 0, NULL} | |
187 | }; | |
188 | ||
189 | ||
190 | typedef struct { | |
191 | PyObject_HEAD | |
192 | } sigrok_Decoder_object; | |
193 | ||
194 | static PyTypeObject srd_Decoder_type = { | |
195 | PyVarObject_HEAD_INIT(NULL, 0) | |
196 | .tp_name = "sigrokdecode.Decoder", | |
197 | .tp_basicsize = sizeof(sigrok_Decoder_object), | |
198 | .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, | |
199 | .tp_doc = "Sigrok Decoder object", | |
200 | .tp_methods = Decoder_methods, | |
201 | }; | |
202 | ||
203 | static struct PyModuleDef sigrokdecode_module = { | |
204 | PyModuleDef_HEAD_INIT, | |
205 | .m_name = "sigrokdecode", | |
206 | .m_doc = "sigrokdecode base class", | |
207 | .m_size = -1, | |
208 | .m_methods = no_methods, | |
209 | }; | |
210 | ||
211 | PyMODINIT_FUNC PyInit_sigrokdecode(void) | |
212 | { | |
213 | PyObject *mod; | |
214 | ||
215 | /* tp_new needs to be assigned here for compiler portability */ | |
216 | srd_Decoder_type.tp_new = PyType_GenericNew; | |
217 | if (PyType_Ready(&srd_Decoder_type) < 0) | |
218 | return NULL; | |
219 | ||
220 | srd_logic_type.tp_new = PyType_GenericNew; | |
221 | if (PyType_Ready(&srd_logic_type) < 0) | |
222 | return NULL; | |
223 | ||
224 | mod = PyModule_Create(&sigrokdecode_module); | |
225 | Py_INCREF(&srd_Decoder_type); | |
226 | if (PyModule_AddObject(mod, "Decoder", (PyObject *)&srd_Decoder_type) == -1) | |
227 | return NULL; | |
228 | Py_INCREF(&srd_logic_type); | |
229 | if (PyModule_AddObject(mod, "srd_logic", (PyObject *)&srd_logic_type) == -1) | |
230 | return NULL; | |
231 | ||
232 | /* expose output types as symbols in the sigrokdecode module */ | |
233 | if(PyModule_AddObject(mod, "SRD_OUTPUT_ANN", | |
234 | PyLong_FromLong(SRD_OUTPUT_ANN)) == -1) | |
235 | return NULL; | |
236 | if(PyModule_AddObject(mod, "SRD_OUTPUT_PROTO", | |
237 | PyLong_FromLong(SRD_OUTPUT_PROTO)) == -1) | |
238 | return NULL; | |
239 | if(PyModule_AddObject(mod, "SRD_OUTPUT_BINARY", | |
240 | PyLong_FromLong(SRD_OUTPUT_BINARY)) == -1) | |
241 | return NULL; | |
242 | ||
243 | return mod; | |
244 | } | |
245 |