src/bindings/python/bt2/bt2/native_bt_message_iterator.i.h

   1 /*
   2  * The MIT License (MIT)
   3  *
   4  * Copyright (c) 2017 Philippe Proulx <pproulx@efficios.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 bt_self_component_port_input_message_iterator_create_from_message_iterator_status
  26 bt_bt2_self_component_port_input_message_iterator_create_from_message_iterator(
  27                 bt_self_message_iterator *self_msg_iter,
  28                 bt_self_component_port_input *input_port,
  29                 bt_self_component_port_input_message_iterator **message_iterator)
  30 {
  31         bt_self_component_port_input_message_iterator_create_from_message_iterator_status
  32                 status;
  33
  34         status = bt_self_component_port_input_message_iterator_create_from_message_iterator(
  35                 self_msg_iter, input_port, message_iterator);
  36
  37         if (status != BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_CREATE_FROM_MESSAGE_ITERATOR_STATUS_OK) {
  38                 *message_iterator = NULL;
  39         }
  40
  41         return status;
  42 }
  43
  44 bt_self_component_port_input_message_iterator_create_from_sink_component_status
  45 bt_bt2_self_component_port_input_message_iterator_create_from_sink_component(
  46                 bt_self_component_sink *self_comp,
  47                 bt_self_component_port_input *input_port,
  48                 bt_self_component_port_input_message_iterator **message_iterator)
  49 {
  50         bt_self_component_port_input_message_iterator_create_from_sink_component_status
  51                 status;
  52
  53         status = bt_self_component_port_input_message_iterator_create_from_sink_component(
  54                 self_comp, input_port, message_iterator);
  55
  56         if (status != BT_SELF_COMPONENT_PORT_INPUT_MESSAGE_ITERATOR_CREATE_FROM_SINK_COMPONENT_STATUS_OK) {
  57                 *message_iterator = NULL;
  58         }
  59
  60         return status;
  61 }
  62
  63 static PyObject *bt_bt2_get_user_component_from_user_msg_iter(
  64                 bt_self_message_iterator *self_message_iterator)
  65 {
  66         bt_self_component *self_component = bt_self_message_iterator_borrow_component(self_message_iterator);
  67         PyObject *py_comp;
  68
  69         BT_ASSERT(self_component);
  70         py_comp = bt_self_component_get_data(self_component);
  71         BT_ASSERT(py_comp);
  72
  73         /* Return new reference */
  74         Py_INCREF(py_comp);
  75         return py_comp;
  76 }
  77
  78 static inline
  79 PyObject *create_pylist_from_messages(bt_message_array_const messages,
  80                 uint64_t message_count)
  81 {
  82         uint64_t i;
  83         PyObject *py_msg_list = PyList_New(message_count);
  84
  85         BT_ASSERT(py_msg_list);
  86
  87         for (i = 0; i < message_count; i++) {
  88                 PyList_SET_ITEM(py_msg_list, i,
  89                                 SWIG_NewPointerObj(SWIG_as_voidptr(messages[i]),
  90                                         SWIGTYPE_p_bt_message, 0));
  91         }
  92
  93         return py_msg_list;
  94 }
  95
  96 static
  97 PyObject *get_msg_range_common(bt_message_iterator_next_status status,
  98                 bt_message_array_const messages, uint64_t message_count)
  99 {
 100         PyObject *py_status;
 101         PyObject *py_return_tuple;
 102         PyObject *py_msg_list;
 103
 104         py_return_tuple = PyTuple_New(2);
 105         BT_ASSERT(py_return_tuple);
 106
 107         /* Set tuple[0], status. */
 108         py_status = SWIG_From_long_SS_long(status);
 109         PyTuple_SET_ITEM(py_return_tuple, 0, py_status);
 110
 111         /* Set tuple[1], message list on success, None otherwise. */
 112         if (status == __BT_FUNC_STATUS_OK) {
 113                 py_msg_list = create_pylist_from_messages(messages, message_count);
 114         } else {
 115                 py_msg_list = Py_None;
 116                 Py_INCREF(py_msg_list);
 117         }
 118
 119         PyTuple_SET_ITEM(py_return_tuple, 1, py_msg_list);
 120
 121         return py_return_tuple;
 122 }
 123
 124 static PyObject *bt_bt2_self_component_port_input_get_msg_range(
 125                 bt_self_component_port_input_message_iterator *iter)
 126 {
 127         bt_message_array_const messages;
 128         uint64_t message_count = 0;
 129         bt_message_iterator_next_status status;
 130
 131         status = bt_self_component_port_input_message_iterator_next(iter,
 132                 &messages, &message_count);
 133         return get_msg_range_common(status, messages, message_count);
 134 }