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 namespace std;
  35
  36 #ifdef HAVE_LIBSIGROKCXX
  37 void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass)
  38 {
  39         klass->set_metadata("sigrok legacy output",
  40                         "Sink", "Wrapper for outputs using legacy libsigrok APIs",
  41                         "Martin Ling");
  42
  43         klass->add_pad_template(Gst::PadTemplate::create(
  44                         "sink",
  45                         Gst::PAD_SINK,
  46                         Gst::PAD_ALWAYS,
  47                         Gst::Caps::create_any()));
  48 }
  49
  50 bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin)
  51 {
  52         Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output",
  53                         0, Gst::register_mm_type<LegacyOutput>(
  54                                 "sigrok_legacy_output"));
  55
  56         return true;
  57 }
  58
  59 LegacyOutput::LegacyOutput(GstBaseSink *gobj) :
  60         Glib::ObjectBase(typeid(LegacyOutput)),
  61         Sink(gobj)
  62 {
  63 }
  64
  65 Glib::RefPtr<LegacyOutput>LegacyOutput::create(
  66         shared_ptr<sigrok::OutputFormat> libsigrok_output_format,
  67         map<string, Glib::VariantBase> options)
  68 {
  69         auto element = Gst::ElementFactory::create_element("sigrok_legacy_output");
  70         if (!element)
  71                 throw runtime_error("Failed to create element - plugin not registered?");
  72         auto output = Glib::RefPtr<LegacyOutput>::cast_static(element);
  73         output->libsigrok_output_format_ = libsigrok_output_format;
  74         auto context = libsigrok_output_format->parent();
  75         output->libsigrok_device_ = context->create_user_device("Vendor", "Model", "Version");
  76         for (int i = 0; i < 8; ++i) {
  77                 gchar *name = g_strdup_printf("D%d", i);
  78                 output->libsigrok_device_->add_channel(i, sigrok::ChannelType::LOGIC, name);
  79                 g_free(name);
  80         }
  81         output->options_ = options;
  82
  83         return output;
  84 }
  85
  86 bool LegacyOutput::start_vfunc()
  87 {
  88         libsigrok_output_ = libsigrok_output_format_->create_output(
  89                         libsigrok_device_, options_);
  90
  91         return true;
  92 }
  93
  94 Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer)
  95 {
  96         Gst::MapInfo info;
  97         buffer->map(info, Gst::MAP_READ);
  98         auto context = libsigrok_output_format_->parent();
  99         auto packet = context->create_logic_packet(
 100                         info.get_data(), info.get_size(), 2);
 101         auto result = libsigrok_output_->receive(packet);
 102         cout << result;
 103         buffer->unmap(info);
 104
 105         return Gst::FLOW_OK;
 106 }
 107
 108 bool LegacyOutput::stop_vfunc()
 109 {
 110         auto context = libsigrok_output_format_->parent();
 111         auto end_packet = context->create_end_packet();
 112         auto result = libsigrok_output_->receive(end_packet);
 113         cout << result;
 114
 115         return true;
 116 }
 117 #endif
 118
 119 }