summaryrefslogtreecommitdiffstats | |
/*
* 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 <algorithm>
#include <bits/signum.h>
#include <csignal>
#include <fstream>
#include <json.hpp>
#include <regex>
#include <thread>
namespace wm {
namespace {
using nlohmann::json;
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);
}
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(),
layers(),
id_alloc{},
pending_events(false),
policy{} {
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());
}
}
} catch (std::exception &e) {
logerror("Loading of configuration failed: %s", e.what());
}
}
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<struct 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_layers();
}
int App::dispatch_events() {
if (this->dispatch_events() == 0) {
return 0;
}
int ret = this->display->dispatch();
if (ret == -1) {
logerror("wl_display_dipatch() returned error %d",
this->display->get_error());
return -1;
}
this->display->flush();
return 0;
}
int App::dispatch_pending_events() {
if (this->pop_pending_events()) {
this->display->dispatch_pending();
return 0;
}
return -1;
}
bool App::pop_pending_events() {
bool x{true};
return this->pending_events.compare_exchange_strong(
x, false, std::memory_order_consume);
}
void App::set_pending_events() {
this->pending_events.store(true, std::memory_order_release);
}
optional<int> App::lookup_id(char const *name) {
return this->id_alloc.lookup(std::string(name));
}
optional<std::string> App::lookup_name(int id) {
return this->id_alloc.lookup(id);
}
// _ _ _ _ _ ____
// (_)_ __ (_) |_ | | __ _ _ _ ___ _ _| |_ / /\ \
// | | '_ \| | __| | |/ _` | | | |/ _ \| | | | __| | | |
// | | | | | | |_ | | (_| | |_| | (_) | |_| | |_| | | |
// |_|_| |_|_|\__|___|_|\__,_|\__, |\___/ \__,_|\__| | | |
// |_____| |___/ \_\/_/
int App::init_layers() {
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.second.layer_id, o->width, o->height);
auto &l = layers[i.second.layer_id];
l->set_destination_rectangle(0, 0, o->width, o->height);
l->set_visibility(1);
logdebug("Setting up layer %s (%d) for surface role match \"%s\"",
i.second.name.c_str(), i.second.layer_id, i.second.role.c_str());
}
// Add layers to screen (XXX: are they sorted correctly?)
s->set_render_order(this->layers.layers);
this->layout_commit();
return 0;
}
void App::surface_set_layout(int surface_id, optional<int> sub_surface_id) {
if (!this->controller->surface_exists(surface_id)) {
logerror("Surface %d does not exist", surface_id);
return;
}
auto o_layer_id = this->layers.get_layer_id(surface_id);
if (!o_layer_id) {
logerror("Surface %d is not associated with any layer!", surface_id);
return;
}
uint32_t layer_id = *o_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;
}
if (sub_surface_id) {
if (o_layer_id != this->layers.get_layer_id(*sub_surface_id)) {
logerror(
"surface_set_layout: layers of surfaces (%d and %d) don't match!",
surface_id, *sub_surface_id);
return;
}
int x_off = 0;
int y_off = 0;
// split along major axis
if (w > h) {
w /= 2;
x_off = w;
} else {
h /= 2;
y_off = h;
}
auto &ss = this->controller->surfaces[*sub_surface_id];
logdebug("surface_set_layout for sub surface %u on layer %u",
*sub_surface_id, layer_id);
// configure surface to wxh dimensions
ss->set_configuration(w, h);
// set source reactangle, even if we should not need to set it.
ss->set_source_rectangle(0, 0, w, h);
// set destination to the display rectangle
ss->set_destination_rectangle(x + x_off, y + y_off, w, h);
}
logdebug("surface_set_layout for surface %u on layer %u", surface_id,
layer_id);
// configure surface to wxh dimensions
s->set_configuration(w, h);
// set source reactangle, even if we should not need to set it.
s->set_source_rectangle(0, 0, w, h);
// set destination to the display rectangle
s->set_destination_rectangle(x, y, w, h);
logdebug("Surface %u now on layer %u with rect { %d, %d, %d, %d }",
surface_id, layer_id, x, y, w, h);
}
void App::layout_commit() {
this->controller->commit_changes();
this->display->flush();
}
char const *App::api_activate_surface(char const *drawing_name) {
ST();
auto const &surface_id = this->lookup_id(drawing_name);
if (!surface_id) {
return "Surface does not exist";
}
if (!this->controller->surface_exists(*surface_id)) {
return "Surface does not exist in controller!";
}
auto layer_id = this->layers.get_layer_id(*surface_id);
if (!layer_id) {
return "Surface is not on any layer!";
}
auto o_state = *this->layers.get_layout_state(*surface_id);
if (o_state == nullptr) {
return "Could not find layer for surface";
}
struct LayoutState &state = *o_state;
// disable layers that are above our current layer
for (auto const &l : this->layers.mapping) {
if (l.second.layer_id <= *layer_id) {
continue;
}
bool flush = false;
if (l.second.state.main != -1) {
this->deactivate(l.second.state.main);
l.second.state.main = -1;
flush = true;
}
if (l.second.state.sub != -1) {
this->deactivate(l.second.state.sub);
l.second.state.sub = -1;
flush = true;
}
if (flush) {
this->layout_commit();
}
}
if (state.main == *surface_id || state.sub == *surface_id) {
return "Surface already active";
}
if (state.main == -1) {
this->try_layout(
state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
this->surface_set_layout(*surface_id);
// XXX do we need to activate after enddraw?
state = nl;
this->emit_syncdraw(drawing_name);
this->enqueue_flushdraw(state.main);
});
} else {
bool can_split = this->can_split(state, *surface_id);
if (can_split) {
this->try_layout(
state,
LayoutState{state.main, *surface_id},
[&] (LayoutState const &nl) {
std::string main =
std::move(*this->lookup_name(state.main));
this->surface_set_layout(state.main, surface_id);
if (state.sub != -1) {
this->deactivate(state.sub);
}
state = nl;
this->emit_syncdraw(drawing_name);
this->emit_syncdraw(main.c_str());
this->enqueue_flushdraw(state.main);
this->enqueue_flushdraw(state.sub);
});
} else {
this->try_layout(
state, LayoutState{*surface_id}, [&] (LayoutState const &nl) {
this->surface_set_layout(*surface_id);
this->deactivate(state.main);
if (state.sub != -1) {
this->deactivate(state.sub);
}
state = nl;
this->emit_syncdraw(drawing_name);
this->enqueue_flushdraw(state.main);
});
}
}
// no error
return nullptr;
}
char const *App::api_deactivate_surface(char const *drawing_name) {
ST();
auto const &surface_id = this->lookup_id(drawing_name);
if (!surface_id) {
return "Surface does not exist";
}
if (*surface_id == this->layers.main_surface) {
return "Cannot deactivate main_surface";
}
auto o_state = *this->layers.get_layout_state(*surface_id);
if (o_state == nullptr) {
return "Could not find layer for surface";
}
struct LayoutState &state = *o_state;
if (state.main == -1) {
return "No surface active";
}
// XXX: check against main_surface, main_surface_name is the configuration
// item.
if (*surface_id == this->layers.main_surface) {
logdebug("Refusing to deactivate main_surface %d", *surface_id);
return nullptr;
}
if (state.main == *surface_id) {
if (state.sub != -1) {
this->try_layout(
state, LayoutState{state.sub, -1}, [&] (LayoutState const &nl) {
std::string sub = std::move(*this->lookup_name(state.sub));
this->deactivate(*surface_id);
this->surface_set_layout(state.sub);
state = nl;
this->layout_commit();
this->emit_syncdraw(sub.c_str());
this->enqueue_flushdraw(state.sub);
});
} else {
this->try_layout(state, LayoutState{-1, -1}, [&] (LayoutState const &nl) {
this->deactivate(*surface_id);
state = nl;
this->layout_commit();
});
}
} else if (state.sub == *surface_id) {
this->try_layout(
state, LayoutState{state.main, -1}, [&] (LayoutState const &nl) {
std::string main = std::move(*this->lookup_name(state.main));
this->deactivate(*surface_id);
this->surface_set_layout(state.main);
state = nl;
this->layout_commit();
this->emit_syncdraw(main.c_str());
this->enqueue_flushdraw(state.main);
});
} else {
return "Surface is not active";
}
return nullptr;
}
void App::enqueue_flushdraw(int surface_id) {
this->check_flushdraw(surface_id);
logdebug("Enqueuing EndDraw for surface_id %d", surface_id);
this->pending_end_draw.push_back(surface_id);
}
void App::check_flushdraw(int surface_id) {
auto i = std::find(std::begin(this->pending_end_draw),
std::end(this->pending_end_draw), surface_id);
if (i != std::end(this->pending_end_draw)) {
auto n = this->lookup_name(surface_id);
logerror("Application %s (%d) has pending EndDraw call(s)!",
n ? n->c_str() : "unknown-name", surface_id);
std::swap(this->pending_end_draw[std::distance(
std::begin(this->pending_end_draw), i)],
this->pending_end_draw.back());
this->pending_end_draw.resize(this->pending_end_draw.size() - 1);
}
}
char const *App::api_enddraw(char const *drawing_name) {
for (unsigned i = 0, iend = this->pending_end_draw.size(); i < iend; i++) {
auto n = this->lookup_name(this->pending_end_draw[i]);
if (n && *n == drawing_name) {
std::swap(this->pending_end_draw[i], this->pending_end_draw[iend - 1]);
this->pending_end_draw.resize(iend - 1);
// XXX: Please tell the compositor to thaw the surface...
this->activate(this->pending_end_draw[i]);
this->layout_commit();
this->emit_flushdraw(drawing_name);
return nullptr;
}
}
return "No EndDraw pending for surface";
}
void App::api_ping() { this->dispatch_pending_events(); }
// _ _ _____ _
// _ __ _ __ _____ _(_) ___ __| | | ____|_ _____ _ __ | |_ ___
// | '_ \| '__/ _ \ \/ / |/ _ \/ _` | | _| \ \ / / _ \ '_ \| __/ __|
// | |_) | | | (_) > <| | __/ (_| | | |___ \ V / __/ | | | |_\__ \
// | .__/|_| \___/_/\_\_|\___|\__,_| |_____| \_/ \___|_| |_|\__|___/
// |_|
void App::surface_created(uint32_t surface_id) {
auto layer_id = this->layers.get_layer_id(surface_id);
if (!layer_id) {
logdebug("Newly created surfce %d is not associated with any layer!",
surface_id);
return;
}
logdebug("surface_id is %u, layer_id is %u", surface_id, *layer_id);
this->controller->layers[*layer_id]->add_surface(
this->controller->surfaces[surface_id].get());
// activate the main_surface right away
/*if (surface_id == static_cast<unsigned>(this->layers.main_surface)) {
logdebug("Activating main_surface (%d)", surface_id);
this->api_activate_surface(
this->lookup_name(surface_id).value_or("unknown-name").c_str());
}*/
}
void App::surface_removed(uint32_t surface_id) {
logdebug("surface_id is %u", surface_id);
// We cannot normally deactivate the main_surface, so be explicit
// about it:
if (int(surface_id) == this->layers.main_surface) {
this->deactivate_main_surface();
} else {
auto drawing_name = this->lookup_name(surface_id);
if (drawing_name) {
this->api_deactivate_surface(drawing_name->c_str());
}
}
this->id_alloc.remove_id(surface_id);
this->layers.remove_surface(surface_id);
}
void App::emit_activated(char const *label) {
this->api.send_event("active", label);
}
void App::emit_deactivated(char const *label) {
this->api.send_event("inactive", label);
}
void App::emit_syncdraw(char const *label) {
this->api.send_event("syncdraw", label);
}
void App::emit_flushdraw(char const *label) {
this->api.send_event("flushdraw", label);
}
void App::emit_visible(char const *label, bool is_visible) {
this->api.send_event(is_visible ? "visible" : "invisible", label);
}
void App::emit_invisible(char const *label) {
return emit_visible(label, false);
}
void App::emit_visible(char const *label) { return emit_visible(label, true); }
result<int> App::api_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->lookup_id(drawing_name);
if (!rname) {
// name does not exist yet, allocate surface id...
auto id = int(this->id_alloc.generate_id(drawing_name));
this->layers.add_surface(id, *lid);
// XXX: we set the main_surface[_name] here and now,
// not sure if we want this, but it worked so far.
if (!this->layers.main_surface_name.empty() &&
this->layers.main_surface_name == drawing_name) {
this->layers.main_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");
}
void App::activate(int id) {
auto ip = this->controller->sprops.find(id);
if (ip != this->controller->sprops.end() && ip->second.visibility == 0) {
this->controller->surfaces[id]->set_visibility(1);
char const *label =
this->lookup_name(id).value_or("unknown-name").c_str();
this->emit_visible(label);
this->emit_activated(label);
}
}
void App::deactivate(int id) {
auto ip = this->controller->sprops.find(id);
if (ip != this->controller->sprops.end() && ip->second.visibility != 0) {
this->controller->surfaces[id]->set_visibility(0);
char const *label =
this->lookup_name(id).value_or("unknown-name").c_str();
this->emit_deactivated(label);
this->emit_invisible(label);
}
}
void App::deactivate_main_surface() {
this->layers.main_surface = -1;
this->api_deactivate_surface(this->layers.main_surface_name.c_str());
}
bool App::can_split(struct LayoutState const &state, int new_id) {
if (state.main != -1 && state.main != new_id) {
auto new_id_layer = this->layers.get_layer_id(new_id).value();
auto current_id_layer = this->layers.get_layer_id(state.main).value();
// surfaces are on separate layers, don't bother.
if (new_id_layer != current_id_layer) {
return false;
}
std::string const &new_id_str = this->lookup_name(new_id).value();
std::string const &cur_id_str = this->lookup_name(state.main).value();
auto const &layer = this->layers.get_layer(new_id_layer);
logdebug("layer info name: %s", layer->name.c_str());
if (layer->layouts.empty()) {
return false;
}
for (auto i = layer->layouts.cbegin(); i != layer->layouts.cend(); i++) {
logdebug("%d main_match '%s'", new_id_layer, i->main_match.c_str());
auto rem = std::regex(i->main_match);
if (std::regex_match(cur_id_str, rem)) {
// build the second one only if the first already matched
logdebug("%d sub_match '%s'", new_id_layer, i->sub_match.c_str());
auto res = std::regex(i->sub_match);
if (std::regex_match(new_id_str, res)) {
logdebug("layout matched!");
return true;
}
}
}
}
return false;
}
void App::try_layout(struct LayoutState & /*state*/,
struct LayoutState const &new_layout,
std::function<void(LayoutState const &nl)> apply) {
if (this->policy.layout_is_valid(new_layout)) {
apply(new_layout);
}
}
// _ _ _ _ _
// ___ ___ _ __ | |_ _ __ ___ | | | ___ _ __ | |__ ___ ___ | | _____
// / __/ _ \| '_ \| __| '__/ _ \| | |/ _ \ '__|| '_ \ / _ \ / _ \| |/ / __|
// | (_| (_) | | | | |_| | | (_) | | | __/ | | | | | (_) | (_) | <\__ \
// \___\___/|_| |_|\__|_| \___/|_|_|\___|_|___|_| |_|\___/ \___/|_|\_\___/
// |_____|
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::surface_visibility(uint32_t /*surface_id*/,
uint32_t /*v*/) {}
void controller_hooks::surface_destination_rectangle(uint32_t /*surface_id*/,
uint32_t /*x*/,
uint32_t /*y*/,
uint32_t /*w*/,
uint32_t /*h*/) {}
} // namespace wm
|