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On connector unplug the overall resolution of all available active connectors can shrink and must be considered to potentially re-create the Capture connection with smaller resolution size. Additionally, update the documentation. Issue #4531
148 lines
3.5 KiB
C++
148 lines
3.5 KiB
C++
/*
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* \brief Test controller for Intel framebuffer driver
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* \author Stefan Kalkowski
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* \date 2016-04-19
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*/
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/*
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* Copyright (C) 2016-2017 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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#include <base/allocator_avl.h>
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#include <base/component.h>
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#include <base/heap.h>
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#include <base/log.h>
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#include <os/vfs.h>
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#include <base/attached_rom_dataspace.h>
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#include <util/xml_generator.h>
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#include <util/xml_node.h>
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#include <timer_session/connection.h>
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using namespace Genode;
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struct Framebuffer_controller
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{
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Env &_env;
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Heap _heap { _env.ram(), _env.rm() };
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Attached_rom_dataspace _connectors { _env, "connectors" };
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Signal_handler<Framebuffer_controller> _connectors_handler {
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_env.ep(), *this, &Framebuffer_controller::_handle_connectors };
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Attached_rom_dataspace _config { _env, "config" };
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uint64_t const _period_ms =
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_config.xml().attribute_value("artifical_update_ms", (uint64_t)0);
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Root_directory _root_dir { _env, _heap, _config.xml().sub_node("vfs") };
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Timer::Connection _timer { _env };
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Signal_handler<Framebuffer_controller> _timer_handler {
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_env.ep(), *this, &Framebuffer_controller::_handle_timer };
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void _update_connector_config(Xml_generator & xml, Xml_node & node);
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void _update_fb_config(Xml_node const &report);
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void _handle_connectors();
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void _handle_timer();
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Framebuffer_controller(Env &env) : _env(env)
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{
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_connectors.sigh(_connectors_handler);
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_handle_connectors();
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if (_period_ms) {
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_timer.sigh(_timer_handler);
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_timer.trigger_periodic(_period_ms * 1000 /* in us */);
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}
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}
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};
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void Framebuffer_controller::_update_connector_config(Xml_generator & xml,
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Xml_node & node)
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{
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xml.node("connector", [&] {
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xml.attribute("name", node.attribute_value("name", String<64>()));
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bool connected = node.attribute_value("connected", false);
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xml.attribute("enabled", connected ? "true" : "false");
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unsigned long width = 0, height = 0, hz = 0;
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node.for_each_sub_node("mode", [&] (Xml_node &mode) {
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unsigned long w, h, z;
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w = mode.attribute_value<unsigned long>("width", 0);
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h = mode.attribute_value<unsigned long>("height", 0);
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z = mode.attribute_value<unsigned long>("hz", 0);
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if (w * h >= width * height) {
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width = w;
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height = h;
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if (z > hz)
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hz = z;
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}
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});
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if (width && height) {
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xml.attribute("width", width);
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xml.attribute("height", height);
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xml.attribute("hz", hz);
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xml.attribute("brightness", 73);
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}
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});
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}
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void Framebuffer_controller::_update_fb_config(Xml_node const &report)
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{
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try {
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static char buf[4096];
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Xml_generator xml(buf, sizeof(buf), "config", [&] {
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// xml.attribute("poll", "5000");
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xml.node("report", [&] {
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xml.attribute("connectors", "yes");
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});
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report.for_each_sub_node("connector", [&] (Xml_node &node) {
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_update_connector_config(xml, node); });
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});
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buf[xml.used()] = 0;
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{
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New_file file { _root_dir, "fb_drv.config" };
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file.append(buf, xml.used());
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}
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} catch (...) {
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error("Cannot update config");
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}
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}
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void Framebuffer_controller::_handle_connectors()
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{
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_connectors.update();
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_update_fb_config(_connectors.xml());
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}
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void Framebuffer_controller::_handle_timer()
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{
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/* artificial update */
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_update_fb_config(_connectors.xml());
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}
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void Component::construct(Genode::Env &env)
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{
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log("--- Framebuffer controller ---\n");
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static Framebuffer_controller controller(env);
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}
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