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 <iostream>
  23 #include <libsigrokflow/legacy_output.hpp>
  24 #include <gstreamermm/private/basesink_p.h>
  25
  26 namespace Srf
  27 {
  28
  29 using namespace std;
  30
  31 #ifdef HAVE_LIBSIGROKCXX
  32 void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass)
  33 {
  34         klass->set_metadata("sigrok legacy output",
  35                         "Sink", "Wrapper for outputs using legacy libsigrok APIs",
  36                         "Martin Ling");
  37
  38         klass->add_pad_template(Gst::PadTemplate::create(
  39                         "sink",
  40                         Gst::PAD_SINK,
  41                         Gst::PAD_ALWAYS,
  42                         Gst::Caps::create_any()));
  43 }
  44
  45 bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin)
  46 {
  47         Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output",
  48                         0, Gst::register_mm_type<LegacyOutput>(
  49                                 "sigrok_legacy_output"));
  50
  51         return true;
  52 }
  53
  54 LegacyOutput::LegacyOutput(GstBaseSink *gobj) :
  55         Glib::ObjectBase(typeid(LegacyOutput)),
  56         Sink(gobj)
  57 {
  58 }
  59
  60 Glib::RefPtr<LegacyOutput>LegacyOutput::create(
  61         shared_ptr<sigrok::OutputFormat> libsigrok_output_format,
  62         map<string, Glib::VariantBase> options)
  63 {
  64         auto element = Gst::ElementFactory::create_element("sigrok_legacy_output");
  65         if (!element)
  66                 throw runtime_error("Failed to create element - plugin not registered?");
  67         auto output = Glib::RefPtr<LegacyOutput>::cast_static(element);
  68         output->libsigrok_output_format_ = libsigrok_output_format;
  69         auto context = libsigrok_output_format->parent();
  70         output->libsigrok_device_ = context->create_user_device("Vendor", "Model", "Version");
  71         for (int i = 0; i < 8; ++i) {
  72                 gchar *name = g_strdup_printf("D%d", i);
  73                 output->libsigrok_device_->add_channel(i, sigrok::ChannelType::LOGIC, name);
  74                 g_free(name);
  75         }
  76         output->options_ = options;
  77
  78         return output;
  79 }
  80
  81 bool LegacyOutput::start_vfunc()
  82 {
  83         libsigrok_output_ = libsigrok_output_format_->create_output(
  84                         libsigrok_device_, options_);
  85
  86         return true;
  87 }
  88
  89 Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer)
  90 {
  91         Gst::MapInfo info;
  92         buffer->map(info, Gst::MAP_READ);
  93         auto context = libsigrok_output_format_->parent();
  94         auto packet = context->create_logic_packet(
  95                         info.get_data(), info.get_size(), 2);
  96         auto result = libsigrok_output_->receive(packet);
  97         cout << result;
  98         buffer->unmap(info);
  99
 100         return Gst::FLOW_OK;
 101 }
 102
 103 bool LegacyOutput::stop_vfunc()
 104 {
 105         auto context = libsigrok_output_format_->parent();
 106         auto end_packet = context->create_end_packet();
 107         auto result = libsigrok_output_->receive(end_packet);
 108         cout << result;
 109
 110         return true;
 111 }
 112 #endif
 113
 114 }