src/legacy_output.cpp

   1 /*
   2  * This file is part of the libsigrokflow project.
   3  *
   4  * Copyright (C) 2018 Martin Ling <martin-sigrok@earth.li>
   5  * Copyright (C) 2018 Uwe Hermann <uwe@hermann-uwe.de>
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  */
  20
  21 #include <config.h>
  22 #include <libsigrokflow/legacy_output.hpp>
  23 #include <glib.h>
  24 #include <iostream>
  25 #include <map>
  26 #include <memory>
  27 #include <stdexcept>
  28 #include <string>
  29 #include <gstreamermm/private/basesink_p.h>
  30
  31 namespace Srf
  32 {
  33
  34 using std::cout;
  35 using std::map;
  36 using std::runtime_error;
  37 using std::shared_ptr;
  38 using std::string;
  39
  40 #ifdef HAVE_LIBSIGROKCXX
  41 void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass)
  42 {
  43         klass->set_metadata("sigrok legacy output",
  44                         "Sink", "Wrapper for outputs using legacy libsigrok APIs",
  45                         "Martin Ling");
  46
  47         klass->add_pad_template(Gst::PadTemplate::create(
  48                         "sink",
  49                         Gst::PAD_SINK,
  50                         Gst::PAD_ALWAYS,
  51                         Gst::Caps::create_any()));
  52 }
  53
  54 bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin)
  55 {
  56         Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output",
  57                         0, Gst::register_mm_type<LegacyOutput>(
  58                                 "sigrok_legacy_output"));
  59
  60         return true;
  61 }
  62
  63 LegacyOutput::LegacyOutput(GstBaseSink *gobj) :
  64         Glib::ObjectBase(typeid(LegacyOutput)),
  65         Sink(gobj)
  66 {
  67 }
  68
  69 Glib::RefPtr<LegacyOutput>LegacyOutput::create(
  70         shared_ptr<sigrok::OutputFormat> libsigrok_output_format,
  71         map<string, Glib::VariantBase> options)
  72 {
  73         auto element = Gst::ElementFactory::create_element("sigrok_legacy_output");
  74         if (!element)
  75                 throw runtime_error("Failed to create element - plugin not registered?");
  76         auto output = Glib::RefPtr<LegacyOutput>::cast_static(element);
  77         output->libsigrok_output_format_ = libsigrok_output_format;
  78         auto context = libsigrok_output_format->parent();
  79         output->libsigrok_device_ = context->create_user_device("Vendor", "Model", "Version");
  80         for (int i = 0; i < 8; ++i) {
  81                 gchar *name = g_strdup_printf("D%d", i);
  82                 output->libsigrok_device_->add_channel(i, sigrok::ChannelType::LOGIC, name);
  83                 g_free(name);
  84         }
  85         output->options_ = options;
  86
  87         return output;
  88 }
  89
  90 bool LegacyOutput::start_vfunc()
  91 {
  92         libsigrok_output_ = libsigrok_output_format_->create_output(
  93                         libsigrok_device_, options_);
  94
  95         return true;
  96 }
  97
  98 Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer)
  99 {
 100         Gst::MapInfo info;
 101         buffer->map(info, Gst::MAP_READ);
 102         auto context = libsigrok_output_format_->parent();
 103         auto packet = context->create_logic_packet(
 104                         info.get_data(), info.get_size(), 2);
 105         auto result = libsigrok_output_->receive(packet);
 106         cout << result;
 107         buffer->unmap(info);
 108
 109         return Gst::FLOW_OK;
 110 }
 111
 112 bool LegacyOutput::stop_vfunc()
 113 {
 114         auto context = libsigrok_output_format_->parent();
 115         auto end_packet = context->create_end_packet();
 116         auto result = libsigrok_output_->receive(end_packet);
 117         cout << result;
 118
 119         return true;
 120 }
 121 #endif
 122
 123 }