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/*
* Copyright © 2012 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 3,
* as published by the Free Software Foundation.
*
* 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/>.
*
* Authored by: Alexandros Frantzis <alexandros.frantzis@canonical.com>
*/
#include "gbm_display.h"
#include "gbm_cursor.h"
#include "gbm_platform.h"
#include "gbm_display_buffer.h"
#include "kms_display_configuration.h"
#include "kms_output.h"
#include "kms_page_flipper.h"
#include "virtual_terminal.h"
#include "mir/graphics/display_report.h"
#include "mir/geometry/rectangle.h"
#include <boost/exception/get_error_info.hpp>
#include <boost/exception/errinfo_errno.hpp>
#include <stdexcept>
namespace mgg = mir::graphics::gbm;
namespace mg = mir::graphics;
namespace geom = mir::geometry;
namespace
{
int errno_from_exception(std::exception const& e)
{
auto errno_ptr = boost::get_error_info<boost::errinfo_errno>(e);
return (errno_ptr != nullptr) ? *errno_ptr : -1;
}
}
mgg::GBMDisplay::GBMDisplay(std::shared_ptr<GBMPlatform> const& platform,
std::shared_ptr<DisplayReport> const& listener)
: platform(platform),
listener(listener),
output_container{platform->drm.fd,
std::make_shared<KMSPageFlipper>(platform->drm.fd)}
{
platform->vt->set_graphics_mode();
shared_egl.setup(platform->gbm);
configure(configuration());
shared_egl.make_current();
}
mgg::GBMDisplay::~GBMDisplay()
{
}
geom::Rectangle mgg::GBMDisplay::view_area() const
{
return display_buffers[0]->view_area();
}
void mgg::GBMDisplay::for_each_display_buffer(std::function<void(DisplayBuffer&)> const& f)
{
for (auto& db_ptr : display_buffers)
f(*db_ptr);
}
std::shared_ptr<mg::DisplayConfiguration> mgg::GBMDisplay::configuration()
{
return std::make_shared<mgg::KMSDisplayConfiguration>(platform->drm.fd);
}
void mgg::GBMDisplay::configure(std::shared_ptr<mg::DisplayConfiguration> const& conf)
{
display_buffers.clear();
std::vector<std::shared_ptr<KMSOutput>> enabled_outputs;
/* Create or reset the KMS outputs */
conf->for_each_output([&](DisplayConfigurationOutput const& conf_output)
{
auto const& kms_conf = std::static_pointer_cast<KMSDisplayConfiguration>(conf);
uint32_t const connector_id = kms_conf->get_kms_connector_id(conf_output.id);
auto output = output_container.get_kms_output_for(connector_id);
if (conf_output.connected)
enabled_outputs.push_back(output);
});
geom::Size max_size;
/* Find the size of the largest enabled output... */
for (auto const& output : enabled_outputs)
{
if (output->size().width > max_size.width)
max_size.width = output->size().width;
if (output->size().height > max_size.height)
max_size.height = output->size().height;
}
/* ...and create a scanout surface with that size */
auto surface = platform->gbm.create_scanout_surface(max_size.width.as_uint32_t(),
max_size.height.as_uint32_t());
/* Create a single DisplayBuffer that displays the surface on all the outputs */
std::unique_ptr<GBMDisplayBuffer> db{new GBMDisplayBuffer{platform, listener, enabled_outputs,
std::move(surface), max_size,
shared_egl.context()}};
display_buffers.push_back(std::move(db));
}
void mgg::GBMDisplay::register_pause_resume_handlers(
MainLoop& main_loop,
DisplayPauseHandler const& pause_handler,
DisplayResumeHandler const& resume_handler)
{
platform->vt->register_switch_handlers(main_loop, pause_handler, resume_handler);
}
void mgg::GBMDisplay::pause()
{
try
{
if (cursor) cursor->hide();
platform->drm.drop_master();
}
catch(std::runtime_error const& e)
{
listener->report_drm_master_failure(errno_from_exception(e));
throw;
}
}
void mgg::GBMDisplay::resume()
{
try
{
platform->drm.set_master();
if (cursor) cursor->show();
}
catch(std::runtime_error const& e)
{
listener->report_drm_master_failure(errno_from_exception(e));
throw;
}
for (auto& db_ptr : display_buffers)
db_ptr->schedule_set_crtc();
}
auto mgg::GBMDisplay::the_cursor() -> std::weak_ptr<Cursor>
{
if (!cursor) cursor = std::make_shared<GBMCursor>(platform, output_container);
return cursor;
}
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