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/libsigrokflow.hpp>
  24
  25 namespace Srf
  26 {
  27
  28 using namespace std;
  29
  30 #ifdef HAVE_LIBSIGROKCXX
  31 void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass)
  32 {
  33         klass->set_metadata("sigrok legacy output",
  34                         "Sink", "Wrapper for outputs using legacy libsigrok APIs",
  35                         "Martin Ling");
  36
  37         klass->add_pad_template(Gst::PadTemplate::create(
  38                         "sink",
  39                         Gst::PAD_SINK,
  40                         Gst::PAD_ALWAYS,
  41                         Gst::Caps::create_any()));
  42 }
  43
  44 bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin)
  45 {
  46         Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output",
  47                         0, Gst::register_mm_type<LegacyOutput>(
  48                                 "sigrok_legacy_output"));
  49
  50         return true;
  51 }
  52
  53 LegacyOutput::LegacyOutput(GstBaseSink *gobj) :
  54         Glib::ObjectBase(typeid(LegacyOutput)),
  55         Sink(gobj)
  56 {
  57 }
  58
  59 Glib::RefPtr<LegacyOutput>LegacyOutput::create(
  60         shared_ptr<sigrok::OutputFormat> libsigrok_output_format,
  61         shared_ptr<sigrok::Device> libsigrok_device,
  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         output->libsigrok_device_ = libsigrok_device;
  70         output->options_ = options;
  71
  72         return output;
  73 }
  74
  75 bool LegacyOutput::start_vfunc()
  76 {
  77         libsigrok_output_ = libsigrok_output_format_->create_output(
  78                         libsigrok_device_, options_);
  79
  80         return true;
  81 }
  82
  83 Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer)
  84 {
  85         Gst::MapInfo info;
  86         buffer->map(info, Gst::MAP_READ);
  87         auto context = libsigrok_output_format_->parent();
  88         auto packet = context->create_logic_packet(
  89                         info.get_data(), info.get_size(), 2);
  90         auto result = libsigrok_output_->receive(packet);
  91         cout << result;
  92         buffer->unmap(info);
  93
  94         return Gst::FLOW_OK;
  95 }
  96
  97 bool LegacyOutput::stop_vfunc()
  98 {
  99         auto context = libsigrok_output_format_->parent();
 100         auto end_packet = context->create_end_packet();
 101         auto result = libsigrok_output_->receive(end_packet);
 102         cout << result;
 103
 104         return true;
 105 }
 106 #endif
 107
 108 }