Factor out src/legacy_output.cpp.

[libsigrokflow.git] / src / main.cpp

diff --git a/src/main.cpp b/src/main.cpp
index 19d1f35eb733bd27d49e78f424fbaf3639cbb8ab..208af495baec09ba4ea1548821b7be5e7211d286 100644 (file)
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,7 @@
 /*
  * This file is part of the libsigrokflow project.
  *
+ * Copyright (C) 2018 Martin Ling <martin-sigrok@earth.li>
  * Copyright (C) 2018 Uwe Hermann <uwe@hermann-uwe.de>
  *
  * This program is free software: you can redistribute it and/or modify
@@ -20,96 +21,100 @@
 #include <config.h>
 #include <libsigrokflow/libsigrokflow.hpp>
 
-#include <iostream>
-
 namespace Srf
 {
 
 using namespace std;
-using namespace std::placeholders;
 
-void init()
+Sink::Sink(GstBaseSink *gobj) :
+       Gst::BaseSink(gobj)
+{
+}
+
+Device::Device(GstElement *gobj) :
+       Gst::Element(gobj)
 {
 }
 
-Glib::RefPtr<LegacyCaptureDevice>LegacyCaptureDevice::create(
-       shared_ptr<sigrok::HardwareDevice> libsigrok_device)
+CaptureDevice::CaptureDevice(GstElement *gobj) :
+       Device(gobj)
 {
-       auto element = Gst::ElementFactory::create_element("sigrok_legacy_capture_device");
-       auto device = Glib::RefPtr<LegacyCaptureDevice>::cast_static(element);
+}
 
-       auto src_template = Gst::PadTemplate::create("src",
-                       Gst::PAD_SRC,
+#ifdef HAVE_LIBSIGROKDECODE
+void LegacyDecoder::class_init(Gst::ElementClass<LegacyDecoder> *klass)
+{
+       klass->set_metadata("sigrok legacy decoder",
+                       "Sink", "Wrapper for protocol decoders using legacy libsigrokdecode APIs",
+                       "Uwe Hermann");
+
+       klass->add_pad_template(Gst::PadTemplate::create(
+                       "sink",
+                       Gst::PAD_SINK,
                        Gst::PAD_ALWAYS,
-                       Gst::Caps::create_any());
-       device->_src_pad = Gst::Pad::create(src_template);
-       device->add_pad(device->_src_pad);
-       device->_libsigrok_device = libsigrok_device;
-       return device;
+                       Gst::Caps::create_any()));
 }
 
-shared_ptr<sigrok::HardwareDevice> LegacyCaptureDevice::libsigrok_device()
+bool LegacyDecoder::register_element(Glib::RefPtr<Gst::Plugin> plugin)
 {
-       return _libsigrok_device;
+       Gst::ElementFactory::register_element(plugin, "sigrok_legacy_decoder",
+                       0, Gst::register_mm_type<LegacyDecoder>(
+                               "sigrok_legacy_decoder"));
+
+       return true;
 }
 
-Gst::StateChangeReturn LegacyCaptureDevice::change_state_vfunc(Gst::StateChange transition)
+LegacyDecoder::LegacyDecoder(GstBaseSink *gobj) :
+       Glib::ObjectBase(typeid(LegacyDecoder)),
+       Sink(gobj)
 {
-       switch (transition)
-       {
-               case Gst::STATE_CHANGE_READY_TO_PAUSED:
-                       return Gst::StateChangeReturn::STATE_CHANGE_NO_PREROLL;
-               case Gst::STATE_CHANGE_PAUSED_TO_PLAYING:
-                       _libsigrok_device->open();
-                       _libsigrok_device->config_set(sigrok::ConfigKey::LIMIT_SAMPLES,
-                                       Glib::Variant<int>::create(10));
-                       _task = Gst::Task::create(std::bind(&LegacyCaptureDevice::_run, this));
-                       _task->set_lock(_mutex);
-                       _src_pad->set_active(true);
-                       _task->start();
-                       return Gst::STATE_CHANGE_SUCCESS;
-               default:
-                       return Gst::STATE_CHANGE_SUCCESS;
-       }
 }
 
-void LegacyCaptureDevice::_datafeed_callback(
-       shared_ptr<sigrok::Device> device,
-       shared_ptr<sigrok::Packet> packet)
+Glib::RefPtr<LegacyDecoder>LegacyDecoder::create(
+       struct srd_session *libsigrokdecode_session, uint64_t unitsize)
 {
-       (void) device;
-       switch (packet->type()->id()) {
-               case SR_DF_LOGIC:
-               {
-                       auto logic = static_pointer_cast<sigrok::Logic>(packet->payload());
-                       auto mem = Gst::Memory::create(
-                                       Gst::MEMORY_FLAG_READONLY,
-                                       logic->data_pointer(),
-                                       logic->data_length(),
-                                       0,
-                                       logic->data_length());
-                       auto buf = Gst::Buffer::create();
-                       buf->append_memory(move(mem));
-                       _src_pad->push(move(buf));
-                       break;
-               }
-               case SR_DF_END:
-                       _session->stop();
-                       _src_pad->push_event(Gst::EventEos::create());
-                       break;
-               default:
-                       break;
-       }
+       auto element = Gst::ElementFactory::create_element("sigrok_legacy_decoder");
+       if (!element)
+               throw runtime_error("Failed to create element - plugin not registered?");
+       auto decoder = Glib::RefPtr<LegacyDecoder>::cast_static(element);
+       decoder->session_ = libsigrokdecode_session;
+       decoder->unitsite_ = unitsize;
+
+       return decoder;
 }
 
-void LegacyCaptureDevice::_run()
+struct srd_session *LegacyDecoder::libsigrokdecode_session()
 {
-       _session = _libsigrok_device->driver()->parent()->create_session();
-       _session->add_device(_libsigrok_device);
-       _session->add_datafeed_callback(bind(&LegacyCaptureDevice::_datafeed_callback, this, _1, _2));
-       _session->start();
-       _session->run();
-       _task->stop();
+       return session_;
+}
+
+Gst::FlowReturn LegacyDecoder::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer)
+{
+       Gst::MapInfo info;
+       buffer->map(info, Gst::MAP_READ);
+       uint64_t num_samples = info.get_size() / unitsite_;
+       srd_session_send(session_, abs_ss_, abs_ss_ + num_samples,
+               info.get_data(), info.get_size(), unitsite_);
+       abs_ss_ += num_samples;
+       buffer->unmap(info);
+
+       return Gst::FLOW_OK;
+}
+
+bool LegacyDecoder::start_vfunc()
+{
+       abs_ss_ = 0;
+       srd_session_start(session_);
+
+       return true;
+}
+
+bool LegacyDecoder::stop_vfunc()
+{
+       srd_session_terminate_reset(session_);
+
+       return true;
 }
+#endif
 
 }