sigsession.cpp

   1 /*
   2  * This file is part of the sigrok project.
   3  *
   4  * Copyright (C) 2012 Joel Holdsworth <joel@airwebreathe.org.uk>
   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 2 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, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  19  */
  20
  21 #include "sigsession.h"
  22
  23 #include <QDebug>
  24
  25 #include <assert.h>
  26
  27 // TODO: This should not be necessary
  28 SigSession* SigSession::session = NULL;
  29
  30 SigSession::SigSession() :
  31         unitSize(0),
  32         sigData(NULL)
  33 {
  34         // TODO: This should not be necessary
  35         session = this;
  36 }
  37
  38 SigSession::~SigSession()
  39 {
  40         g_array_free(sigData, TRUE);
  41
  42         // TODO: This should not be necessary
  43         session = NULL;
  44 }
  45
  46 void SigSession::loadFile(const std::string &name)
  47 {
  48         if (sr_session_load(name.c_str()) == SR_OK) {
  49                 /* sigrok session file */
  50                 sr_session_datafeed_callback_add(dataFeedInProc);
  51                 sr_session_start();
  52                 sr_session_run();
  53                 sr_session_stop();
  54         }
  55 }
  56
  57 void SigSession::dataFeedIn(const struct sr_dev_inst *sdi,
  58         struct sr_datafeed_packet *packet)
  59 {
  60         assert(sdi);
  61         assert(packet);
  62
  63         switch (packet->type) {
  64         case SR_DF_META_LOGIC:
  65                 {
  66                         const sr_datafeed_meta_logic *meta_logic =
  67                                 (sr_datafeed_meta_logic*)packet->payload;
  68                         int num_enabled_probes = 0;
  69
  70                         for (int i = 0; i < meta_logic->num_probes; i++) {
  71                                 const sr_probe *probe =
  72                                         (sr_probe *)g_slist_nth_data(sdi->probes, i);
  73                                 if (probe->enabled) {
  74                                         probeList[num_enabled_probes++] = probe->index;
  75                                 }
  76                         }
  77
  78                         /* How many bytes we need to store num_enabled_probes bits */
  79                         unitSize = (num_enabled_probes + 7) / 8;
  80                         sigData = g_array_new(FALSE, FALSE, unitSize);
  81                 }
  82                 break;
  83
  84         case SR_DF_LOGIC:
  85                 {
  86                         uint64_t filter_out_len;
  87                         uint8_t *filter_out;
  88
  89                         const struct sr_datafeed_logic *const logic =
  90                                 (sr_datafeed_logic*)packet->payload;
  91
  92                         qDebug() << "SR_DF_LOGIC (length =" << logic->length
  93                                 << ", unitsize = " << logic->unitsize << ")";
  94
  95                         if (sr_filter_probes(logic->unitsize, unitSize,
  96                                 probeList, (uint8_t*)logic->data, logic->length,
  97                                 &filter_out, &filter_out_len) != SR_OK)
  98                                 return;
  99
 100                         assert(sigData);
 101                         g_array_append_vals(sigData, filter_out, filter_out_len / unitSize);
 102
 103                         g_free(filter_out);
 104                 }
 105                 break;
 106
 107         case SR_DF_END:
 108                 dataUpdated();
 109                 break;
 110         }
 111 }
 112
 113 void SigSession::dataFeedInProc(const struct sr_dev_inst *sdi,
 114         struct sr_datafeed_packet *packet)
 115 {
 116         assert(session);
 117         session->dataFeedIn(sdi, packet);
 118 }