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/*
* Copyright (C) 2017 Mentor Graphics Development (Deutschland) GmbH
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "app.hpp"
#include "json_helper.hpp"
#include "layers.hpp"
#include "layout.hpp"
#include "util.hpp"
#include "wayland.hpp"
#include <cstdio>
#include <memory>
#include <cassert>
#include <json-c/json.h>
#include <bits/signum.h>
#include <csignal>
#include <fstream>
#include <algorithm>
#include <json.hpp>
namespace wm {
namespace {
App *g_app;
using json = nlohmann::json;
struct wm::area area_from_json(json const &j) {
return wm::area{
j["name"],
{
j["width"], j["height"], j["x"], j["y"],
},
j["zorder"],
};
}
result<struct layout> layout_from_json(json const &j) {
auto &ja = j["areas"];
auto l = layout{j["name"], uint32_t(ja.size()), {}};
if (ja.size() > layout::MAX_N_AREAS) {
return Err<struct layout>("Invalid number of areas in layout");
}
logdebug("Loading layout '%s' with %u areas", l.name.c_str(),
unsigned(ja.size()));
std::transform(std::cbegin(ja), std::cend(ja), std::begin(l.areas),
area_from_json);
return Ok(l);
}
result<json> file_to_json(char const *filename) {
std::ifstream i(filename);
if (i.fail()) {
return Err<json>("Could not open config file");
}
json j;
i >> j;
return Ok(j);
}
// Will throw if parsing fails
struct result<layouts_type> load_layout(char const *filename) {
logdebug("loading layout from %s", filename);
auto j = file_to_json(filename);
if (j.is_err()) {
return Err<layouts_type>(j.unwrap_err());
}
json jlayouts = j.unwrap();
auto layouts = layouts_type();
layouts.reserve(jlayouts.size());
std::transform(std::cbegin(jlayouts), std::cend(jlayouts),
std::back_inserter(layouts), layout_from_json);
return Ok(layouts);
}
struct result<layer_map>
load_layer_map(char const *filename) {
logdebug("loading IDs from %s", filename);
auto j = file_to_json(filename);
if (j.is_err()) {
return Err<layer_map>(j.unwrap_err());
}
json jids = j.unwrap();
return to_layer_map(jids);
}
} // namespace
// _ _ _ _
// ___| | __ _ ___ ___ / \ _ __ _ __ (_)_ __ ___ _ __ | |
// / __| |/ _` / __/ __| / _ \ | '_ \| '_ \ | | '_ ` _ \| '_ \| |
// | (__| | (_| \__ \__ \ / ___ \| |_) | |_) | | | | | | | | |_) | |
// \___|_|\__,_|___/___/ /_/ \_\ .__/| .__/ |_|_| |_| |_| .__/|_|
// |_| |_| |_|
App::App(wl::display *d)
: api{this},
chooks{this},
display{d},
controller{},
outputs(),
config(),
layouts(),
layers(),
pending(),
name_mapping(),
id_alloc{}
{
assert(g_app == nullptr);
g_app = this;
try {
{
auto l = load_layer_map(
this->config.get_string("layers.json").value().c_str());
if (l.is_ok()) {
this->layers = l.unwrap();
} else {
logerror("%s", l.err().value());
}
}
{
auto l =
load_layout(this->config.get_string("layout.json").value().c_str());
if (l.is_ok()) {
this->layouts = l.unwrap();
} else {
logerror("%s", l.err().value());
}
}
} catch (std::exception &e) {
logerror("Loading of configuration failed: %s", e.what());
}
}
App::~App() { g_app = nullptr; }
int App::init() {
if (!this->display->ok()) {
return -1;
}
if (this->layers.mapping.empty()) {
logerror("No surface -> layer mapping loaded");
return -1;
}
this->display->add_global_handler(
"wl_output", [this](wl_registry *r, uint32_t name, uint32_t v) {
this->outputs.emplace_back(std::make_unique<wl::output>(r, name, v));
});
this->display->add_global_handler(
"ivi_controller", [this](wl_registry *r, uint32_t name, uint32_t v) {
this->controller = std::make_unique<genivi::controller>(r, name, v);
// Init controller hooks
this->controller->chooks = &this->chooks;
// XXX: This protocol needs the output, so lets just add our mapping
// here...
this->controller->add_proxy_to_id_mapping(
this->outputs.back()->proxy.get(),
wl_proxy_get_id(reinterpret_cast<struct wl_proxy *>(
this->outputs.back()->proxy.get())));
});
// First level objects
this->display->roundtrip();
// Second level objects
this->display->roundtrip();
// Third level objects
this->display->roundtrip();
return init_layout();
}
int App::dispatch_events() {
int ret = this->display->dispatch();
if (ret == -1) {
logerror("wl_display_dipatch() returned error %d",
this->display->get_error());
return -1;
}
this->display->flush();
// execute pending tasks, that is layout changes etc.
this->execute_pending();
return 0;
}
// _ _ _ _ _ ____
// (_)_ __ (_) |_ | | __ _ _ _ ___ _ _| |_ / /\ \
// | | '_ \| | __| | |/ _` | | | |/ _ \| | | | __| | | |
// | | | | | | |_ | | (_| | |_| | (_) | |_| | |_| | | |
// |_|_| |_|_|\__|___|_|\__,_|\__, |\___/ \__,_|\__| | | |
// |_____| |___/ \_\/_/
int App::init_layout() {
if (!this->controller) {
logerror("ivi_controller global not available");
return -1;
}
if (this->outputs.empty()) {
logerror("no output was set up!");
return -1;
}
auto &c = this->controller;
auto &o = this->outputs.front();
auto &s = c->screens.begin()->second;
auto &layers = c->layers;
// XXX: Write output dimensions to ivi controller...
c->output_size = genivi::size{uint32_t(o->width), uint32_t(o->height)};
// Clear scene
layers.clear();
// Clear screen
s->clear();
// Quick and dirty setup of layers
// XXX: This likely needs to be sorted by order (note, we don't (yet?)
// do any zorder arrangement).
for (auto const &i : this->layers.mapping) {
c->layer_create(i.layer_id, o->width, o->height);
auto &l = layers[i.layer_id];
l->set_destination_rectangle(0, 0, o->width, o->height);
l->set_visibility(1);
logdebug("Setting up layer %s (%d) for surfaces %d-%d", i.name.c_str(),
i.layer_id, i.id_min, i.id_max);
}
// Add layers to screen (XXX: are they sorted correctly?)
s->set_render_order(this->layers.layers);
c->commit_changes();
this->display->flush();
return 0;
}
void App::surface_set_layout(uint32_t surface_id) {
auto o_layer_id = this->layers.get_layer_id(surface_id);
if (!o_layer_id) {
logerror("Surface %d is not associated with any layer!", int(surface_id));
return;
}
if (!this->controller->surface_exists(surface_id)) {
logerror("Surface %d does not exist", int(surface_id));
return;
}
uint32_t layer_id = o_layer_id.value();
logdebug("surface_set_layout for surface %u on layer %u", surface_id, layer_id);
auto const &layer = this->layers.get_layer(layer_id);
auto rect = layer.value().rect;
auto &s = this->controller->surfaces[surface_id];
int x = rect.x;
int y = rect.y;
int w = rect.w;
int h = rect.h;
// less-than-0 values refer to MAX + 1 - $VALUE
// e.g. MAX is either screen width or height
if (w < 0) {
w = this->controller->output_size.w + 1 + w;
}
if (h < 0) {
h = this->controller->output_size.h + 1 + h;
}
// configure surface to wxh dimensions
s->set_configuration(w, h);
// set destination to the display rectangle
s->set_destination_rectangle(x, y, w, h);
// XXX: visibility should be determined independently of our
// layer + geometry setup.
s->set_visibility(surface_id == (unsigned)this->layers.main_surface ? 1 : 0);
this->controller->layers[layer_id]->add_surface(s.get());
logdebug("Surface %u now on layer %u with rect { %d, %d, %d, %d }",
surface_id, layer_id, x, y, w, h);
}
char const *App::activate_surface(uint32_t surface_id) {
if (!this->controller->surface_exists(surface_id)) {
return "Surface does not exist";
}
// This should involve a policy check, but as we do not (yet) have
// such a thing, we will just switch to this surface.
// XXX: input focus missing!!1
// Make it visible, no (or little effect) if already visible
auto &s = this->controller->surfaces[surface_id];
// Set all others invisible
for (auto &i : this->controller->surfaces) {
auto &si = this->controller->sprops[i.second->id];
if (si.visibility == 1 && si.id != s->id &&
int(si.id) != this->layers.main_surface) {
i.second->set_visibility(0);
}
}
s->set_visibility(1);
// commit changes
this->controller->commit_changes();
this->display->flush();
// no error
return nullptr;
}
void App::add_task(char const *name, std::function<void()> &&f) {
this->pending.emplace_back(std::make_pair(name, f));
}
void App::execute_pending() {
if (!this->pending.empty()) {
for (auto &t : this->pending) {
logdebug("executing task '%s'", t.first);
t.second();
}
this->pending.clear();
this->controller->commit_changes();
this->display->flush();
}
}
// _ _ _____ _
// _ __ _ __ _____ _(_) ___ __| | | ____|_ _____ _ __ | |_ ___
// | '_ \| '__/ _ \ \/ / |/ _ \/ _` | | _| \ \ / / _ \ '_ \| __/ __|
// | |_) | | | (_) > <| | __/ (_| | | |___ \ V / __/ | | | |_\__ \
// | .__/|_| \___/_/\_\_|\___|\__,_| |_____| \_/ \___|_| |_|\__|___/
// |_|
void App::surface_created(uint32_t surface_id) {
logdebug("surface_id is %u", surface_id);
// We need to execute the surface setup after its creation.
this->add_task("surface_set_layout",
[surface_id, this] { this->surface_set_layout(surface_id); });
}
void App::surface_removed(uint32_t surface_id) {
logdebug("surface_id is %u", surface_id);
}
result<int> App::request_surface(char const *drawing_name) {
auto lid = this->layers.get_layer_id(std::string(drawing_name));
if (!lid) {
// XXX: to we need to put these applications on the App layer?
return Err<int>("Drawing name does not match any role");
}
auto rname = this->id_alloc[drawing_name];
if (! rname) {
// name does not exist yet, allocate surface id...
// XXX: how to allocate surface IDs?
// * allocate by running a counter for each layer?
// * allocate IDs globally, i.e. do not have layers contain
// ID ranges (only define the surfaces on the layer by
// role?)
auto id = int(this->id_alloc(drawing_name));
this->layers.add_surface(id, lid.value());
// XXX: setup the main_surface id if we registered HomeScreen
// XXX: you should fix this!
if (!this->layers.main_surface_name.empty() &&
this->layers.main_surface_name == drawing_name) {
this->layers.main_surface = id;
this->activate_surface(id);
logdebug("Set main_surface id to %u", id);
}
return Ok<int>(id);
}
// Check currently registered drawing names if it is already there.
return Err<int>("Surface already present");
}
char const* App::activate_surface(char const *drawing_name) {
auto osid = this->id_alloc[drawing_name];
if (osid) {
logdebug("ativate surface with name %s and id %u", drawing_name, osid.value());
this->activate_surface(osid.value());
return nullptr;
}
logerror("surface %s unknown", drawing_name);
return "Surface unknown";
}
// _ _ _ _ _ _ _
// | |__ (_)_ __ __| (_)_ __ __ _ __ _ _ __ (_) (_)_ __ ___ _ __ | |
// | '_ \| | '_ \ / _` | | '_ \ / _` | / _` | '_ \| | | | '_ ` _ \| '_ \| |
// | |_) | | | | | (_| | | | | | (_| | | (_| | |_) | | | | | | | | | |_) | |
// |_.__/|_|_| |_|\__,_|_|_| |_|\__, |___\__,_| .__/|_| |_|_| |_| |_| .__/|_|
// |___/_____| |_| |_|
binding_api::result_type binding_api::request_surface(
char const *drawing_name) {
auto r = this->app->request_surface(drawing_name);
if (r.is_err()) {
return Err<json_object*>(r.unwrap_err());
}
return Ok(json_object_new_int(r.unwrap()));
}
binding_api::result_type binding_api::activate_surface(
char const *drawing_name) {
logdebug("%s drawing_name %s", __func__, drawing_name);
auto r = this->app->activate_surface(drawing_name);
if (r) {
return Err<json_object *>(r);
}
return Ok(json_object_new_object());
}
binding_api::result_type binding_api::list_drawing_names() {
json j = this->app->id_alloc.names;
return Ok(json_tokener_parse(j.dump().c_str()));
}
binding_api::result_type binding_api::debug_layers() {
logdebug("%s", __func__);
return Ok(json_tokener_parse(this->app->layers.to_json().dump().c_str()));
}
binding_api::result_type binding_api::debug_surfaces() {
logdebug("%s", __func__);
return Ok(to_json(this->app->controller->sprops));
}
binding_api::result_type binding_api::debug_status() {
logdebug("%s", __func__);
json_object *jr = json_object_new_object();
json_object_object_add(jr, "surfaces",
to_json(this->app->controller->sprops));
json_object_object_add(jr, "layers", to_json(this->app->controller->lprops));
return Ok(jr);
}
binding_api::result_type binding_api::debug_terminate() {
logdebug("%s", __func__);
raise(SIGKILL); // XXX afb-daemon kills it's pgroup using TERM, which
// doesn't play well with perf
return Ok(json_object_new_object());
}
binding_api::result_type binding_api::demo_activate_surface(
uint32_t surfaceid) {
char const *e = this->app->activate_surface(surfaceid);
if (e) {
return Err<json_object *>(e);
}
return Ok(json_object_new_object());
}
binding_api::result_type binding_api::demo_activate_all() {
for (auto &s : this->app->controller->surfaces) {
s.second->set_visibility(1);
}
this->app->controller->commit_changes();
this->app->display->flush();
return Ok(json_object_new_object());
}
// _ _ _ _ _
// ___ ___ _ __ | |_ _ __ ___ | | | ___ _ __ | |__ ___ ___ | | _____
// / __/ _ \| '_ \| __| '__/ _ \| | |/ _ \ '__|| '_ \ / _ \ / _ \| |/ / __|
// | (_| (_) | | | | |_| | | (_) | | | __/ | | | | | (_) | (_) | <\__ \
// \___\___/|_| |_|\__|_| \___/|_|_|\___|_|___|_| |_|\___/ \___/|_|\_\___/
// |_____|
void controller_hooks::surface_created(uint32_t surface_id) {
this->app->surface_created(surface_id);
}
void controller_hooks::surface_removed(uint32_t surface_id) {
this->app->surface_removed(surface_id);
}
void controller_hooks::add_task(char const *name, std::function<void()> &&f) {
this->app->add_task(name, std::move(f));
}
} // namespace wm
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