Factor out src/legacy_capture_device.cpp.

[libsigrokflow.git] / src / main.cpp

/*
 * 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
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <config.h>
#include <iostream>
#include <libsigrokflow/libsigrokflow.hpp>

namespace Srf
{

using namespace std;
using namespace std::placeholders;

Sink::Sink(GstBaseSink *gobj) :
	Gst::BaseSink(gobj)
{
}

Device::Device(GstElement *gobj) :
	Gst::Element(gobj)
{
}

CaptureDevice::CaptureDevice(GstElement *gobj) :
	Device(gobj)
{
}

#ifdef HAVE_LIBSIGROKCXX
void LegacyInput::class_init(Gst::ElementClass<LegacyInput> *klass)
{
	klass->set_metadata("sigrok legacy input",
			"Transform", "Wrapper for inputs using legacy libsigrok APIs",
			"Martin Ling");

	klass->add_pad_template(Gst::PadTemplate::create(
			"sink",
			Gst::PAD_SINK,
			Gst::PAD_ALWAYS,
			Gst::Caps::create_any()));

	klass->add_pad_template(Gst::PadTemplate::create(
			"src",
			Gst::PAD_SRC,
			Gst::PAD_ALWAYS,
			Gst::Caps::create_any()));
}

bool LegacyInput::register_element(Glib::RefPtr<Gst::Plugin> plugin)
{
	Gst::ElementFactory::register_element(plugin, "sigrok_legacy_input",
			0, Gst::register_mm_type<LegacyInput>(
				"sigrok_legacy_input"));

	return true;
}

LegacyInput::LegacyInput(GstElement *gobj) :
	Glib::ObjectBase(typeid(LegacyInput)),
	Gst::Element(gobj)
{
	add_pad(sink_pad_ = Gst::Pad::create(get_pad_template("sink"), "sink"));
	add_pad(src_pad_ = Gst::Pad::create(get_pad_template("src"), "src"));
	sink_pad_->set_chain_function(sigc::mem_fun(*this, &LegacyInput::chain));
}

Glib::RefPtr<LegacyInput> LegacyInput::create(
	shared_ptr<sigrok::InputFormat> libsigrok_input_format,
	map<string, Glib::VariantBase> options)
{
	auto element = Gst::ElementFactory::create_element("sigrok_legacy_input");
	if (!element)
		throw runtime_error("Failed to create element - plugin not registered?");
	auto input = Glib::RefPtr<LegacyInput>::cast_static(element);
	input->libsigrok_input_format_ = libsigrok_input_format;
	input->options_ = options;

	return input;
}

bool LegacyInput::start_vfunc()
{
	libsigrok_input_ = libsigrok_input_format_->create_input(options_);
	auto context = libsigrok_input_format_->parent();
	session_ = context->create_session();
	session_->add_device(libsigrok_input_->device());
	session_->add_datafeed_callback(bind(&LegacyInput::datafeed_callback_, this, _1, _2));
	session_->start();

	return true;
}

void LegacyInput::datafeed_callback_(
	shared_ptr<sigrok::Device> device,
	shared_ptr<sigrok::Packet> packet)
{
	(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;
	}
}

Gst::FlowReturn LegacyInput::chain(const Glib::RefPtr<Gst::Pad> &,
	const Glib::RefPtr<Gst::Buffer> &buf)
{
	Gst::MapInfo info;
	buf->map(info, Gst::MAP_READ);
	libsigrok_input_->send(info.get_data(), info.get_size());
	buf->unmap(info);

	return Gst::FLOW_OK;
}

bool LegacyInput::stop_vfunc()
{
	libsigrok_input_->end();

	return true;
}

void LegacyOutput::class_init(Gst::ElementClass<LegacyOutput> *klass)
{
	klass->set_metadata("sigrok legacy output",
			"Sink", "Wrapper for outputs using legacy libsigrok APIs",
			"Martin Ling");

	klass->add_pad_template(Gst::PadTemplate::create(
			"sink",
			Gst::PAD_SINK,
			Gst::PAD_ALWAYS,
			Gst::Caps::create_any()));
}

bool LegacyOutput::register_element(Glib::RefPtr<Gst::Plugin> plugin)
{
	Gst::ElementFactory::register_element(plugin, "sigrok_legacy_output",
			0, Gst::register_mm_type<LegacyOutput>(
				"sigrok_legacy_output"));

	return true;
}

LegacyOutput::LegacyOutput(GstBaseSink *gobj) :
	Glib::ObjectBase(typeid(LegacyOutput)),
	Sink(gobj)
{
}

Glib::RefPtr<LegacyOutput>LegacyOutput::create(
	shared_ptr<sigrok::OutputFormat> libsigrok_output_format,
	shared_ptr<sigrok::Device> libsigrok_device,
	map<string, Glib::VariantBase> options)
{
	auto element = Gst::ElementFactory::create_element("sigrok_legacy_output");
	if (!element)
		throw runtime_error("Failed to create element - plugin not registered?");
	auto output = Glib::RefPtr<LegacyOutput>::cast_static(element);
	output->libsigrok_output_format_ = libsigrok_output_format;
	output->libsigrok_device_ = libsigrok_device;
	output->options_ = options;

	return output;
}

bool LegacyOutput::start_vfunc()
{
	libsigrok_output_ = libsigrok_output_format_->create_output(
			libsigrok_device_, options_);

	return true;
}

Gst::FlowReturn LegacyOutput::render_vfunc(const Glib::RefPtr<Gst::Buffer> &buffer)
{
	Gst::MapInfo info;
	buffer->map(info, Gst::MAP_READ);
	auto context = libsigrok_output_format_->parent();
	auto packet = context->create_logic_packet(
			info.get_data(), info.get_size(), 2);
	auto result = libsigrok_output_->receive(packet);
	cout << result;
	buffer->unmap(info);

	return Gst::FLOW_OK;
}

bool LegacyOutput::stop_vfunc()
{
	auto context = libsigrok_output_format_->parent();
	auto end_packet = context->create_end_packet();
	auto result = libsigrok_output_->receive(end_packet);
	cout << result;

	return true;
}
#endif

#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()));
}

bool LegacyDecoder::register_element(Glib::RefPtr<Gst::Plugin> plugin)
{
	Gst::ElementFactory::register_element(plugin, "sigrok_legacy_decoder",
			0, Gst::register_mm_type<LegacyDecoder>(
				"sigrok_legacy_decoder"));

	return true;
}

LegacyDecoder::LegacyDecoder(GstBaseSink *gobj) :
	Glib::ObjectBase(typeid(LegacyDecoder)),
	Sink(gobj)
{
}

Glib::RefPtr<LegacyDecoder>LegacyDecoder::create(
	struct srd_session *libsigrokdecode_session, uint64_t unitsize)
{
	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;
}

struct srd_session *LegacyDecoder::libsigrokdecode_session()
{
	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

}