src/main.cpp

   1 #include "json_helper.hpp"
   2 #include "util.hpp"
   3 #include "wayland.hpp"
   4 #include "app.hpp"
   5
   6 #include <algorithm>
   7 #include <json.h>
   8
   9 extern "C" {
  10 #include <afb/afb-binding.h>
  11 #include <systemd/sd-event.h>
  12 }
  13
  14 namespace {
  15 struct afb_instance {
  16    std::unique_ptr<wl::display> display;
  17    std::unique_ptr<genivi::controller> controller;
  18    std::vector<std::unique_ptr<wl::output>> outputs;
  19
  20    wm::App app;
  21
  22    afb_instance() : display{new wl::display}, controller{nullptr}, outputs{}, app{} {}
  23
  24    int init();
  25 };
  26
  27 struct afb_instance *g_afb_instance;
  28
  29 int afb_instance::init() {
  30    if (!this->display->ok()) {
  31       return -1;
  32    }
  33
  34    this->display->r.add_global_handler("wl_output", [](wl_registry *r,
  35                                                        uint32_t name,
  36                                                        uint32_t v) {
  37       g_afb_instance->outputs.emplace_back(std::make_unique<wl::output>(r, name, v));
  38    });
  39
  40    this->display->r.add_global_handler(
  41       "ivi_controller", [](wl_registry *r, uint32_t name, uint32_t v) {
  42          g_afb_instance->controller =
  43             std::make_unique<genivi::controller>(r, name, v);
  44
  45          // XXX: This protocol needs the output, so lets just add our mapping
  46          // here...
  47          g_afb_instance->controller->add_proxy_to_id_mapping(
  48             g_afb_instance->outputs.back()->proxy.get(),
  49             wl_proxy_get_id(reinterpret_cast<struct wl_proxy *>(
  50                g_afb_instance->outputs.back()->proxy.get())));
  51       });
  52
  53    // First level objects
  54    this->display->roundtrip();
  55    // Second level objects
  56    this->display->roundtrip();
  57    // Third level objects
  58    this->display->roundtrip();
  59
  60    return 0;
  61 }
  62
  63 //  _       _ _       _                         _    ____
  64 // (_)_ __ (_) |_    | | __ _ _   _  ___  _   _| |_ / /\ \
  65 // | | '_ \| | __|   | |/ _` | | | |/ _ \| | | | __| |  | |
  66 // | | | | | | |_    | | (_| | |_| | (_) | |_| | |_| |  | |
  67 // |_|_| |_|_|\__|___|_|\__,_|\__, |\___/ \__,_|\__| |  | |
  68 //              |_____|       |___/                 \_\/_/
  69 char const *init_layout() {
  70    if (!g_afb_instance->controller) {
  71       return "ivi_controller global not available";
  72    }
  73
  74    if (g_afb_instance->outputs.empty()) {
  75       return "no output was set up!";
  76    }
  77
  78    auto &c = g_afb_instance->controller;
  79
  80    auto &o = g_afb_instance->outputs.front();
  81    auto &s = c->screens.begin()->second;
  82    auto &layers = c->layers;
  83
  84    // XXX: Write output dimensions to ivi controller...
  85    c->output_size = genivi::size{uint32_t(o->width), uint32_t(o->height)};
  86
  87    // Clear scene
  88    layers.clear();
  89
  90    // Clear screen
  91    s->clear();
  92
  93    // Setup our dummy scene...
  94    c->layer_create(100, 0, 0);   // bottom layer, anything else
  95    c->layer_create(1000, 0, 0);  // top layer, mandelbrot
  96
  97    auto &l100 = c->layers[100];
  98    auto &l1k = c->layers[1000];
  99
 100    // Set layers fullscreen
 101    l100->set_destination_rectangle(0, 0, o->width, o->height);
 102    l1k->set_destination_rectangle(0, 0, o->width, o->height);
 103    l100->set_visibility(1);
 104    l1k->set_visibility(1);
 105
 106    // Add layers to screen
 107    s->set_render_order({100, 1000});
 108
 109    c->commit_changes();
 110
 111    g_afb_instance->display->flush();
 112
 113    return nullptr;
 114 }
 115
 116 int display_event_callback(sd_event_source *evs, int fd, uint32_t events,
 117                            void *data) {
 118    if ((events & EPOLLHUP) != 0) {
 119       logerror("The compositor hung up, dying now.");
 120       delete g_afb_instance;
 121       g_afb_instance = nullptr;
 122       goto error;
 123    }
 124
 125    if (events & EPOLLIN) {
 126       int ret = g_afb_instance->display->dispatch();
 127       if (ret == -1) {
 128          logerror("wl_display_dipatch() returned error %d",
 129                    g_afb_instance->display->get_error());
 130          goto error;
 131       }
 132       g_afb_instance->display->flush();
 133
 134       // execute pending tasks, that is layout changes etc.
 135       g_afb_instance->controller->execute_pending();
 136       g_afb_instance->display->roundtrip();
 137    }
 138
 139    return 0;
 140
 141 error:
 142    sd_event_source_unref(evs);
 143    return -1;
 144 }
 145
 146 //  _     _           _ _                 _       _ _    ____
 147 // | |__ (_)_ __   __| (_)_ __   __ _    (_)_ __ (_) |_ / /\ \
 148 // | '_ \| | '_ \ / _` | | '_ \ / _` |   | | '_ \| | __| |  | |
 149 // | |_) | | | | | (_| | | | | | (_| |   | | | | | | |_| |  | |
 150 // |_.__/|_|_| |_|\__,_|_|_| |_|\__, |___|_|_| |_|_|\__| |  | |
 151 //                              |___/_____|             \_\/_/
 152 int binding_init_() {
 153    lognotice("WinMan ver. %s", WINMAN_VERSION_STRING);
 154
 155    if (g_afb_instance != nullptr) {
 156       logerror("Wayland context already initialized?");
 157       return 0;
 158    }
 159
 160    if (getenv("XDG_RUNTIME_DIR") == nullptr) {
 161       logerror("Environment variable XDG_RUNTIME_DIR not set");
 162       goto error;
 163    }
 164
 165    g_afb_instance = new afb_instance;
 166    if (g_afb_instance->init() == -1) {
 167       logerror("Could not connect to compositor");
 168       goto error;
 169    }
 170
 171    if (char const *e = init_layout()) {
 172       logerror("Could not init layout: %s", e);
 173       goto error;
 174    }
 175
 176    {
 177       int ret = sd_event_add_io(afb_daemon_get_event_loop(), nullptr,
 178                                 g_afb_instance->display->get_fd(), EPOLLIN,
 179                                 display_event_callback, g_afb_instance);
 180       if (ret < 0) {
 181          logerror("Could not initialize afb_instance event handler: %d", -ret);
 182          goto error;
 183       }
 184    }
 185
 186    atexit([] { delete g_afb_instance; });
 187
 188    return 0;
 189
 190 error:
 191    delete g_afb_instance;
 192    g_afb_instance = nullptr;
 193    return -1;
 194 }
 195
 196 int binding_init() noexcept {
 197    try {
 198       return binding_init_();
 199    } catch (std::exception &e) {
 200       logerror("Uncaught exception in binding_init(): %s", e.what());
 201    }
 202    return -1;
 203 }
 204
 205 //      _      _                         _        _              ____
 206 //   __| | ___| |__  _   _  __ _     ___| |_ __ _| |_ _   _ ___ / /\ \
 207 //  / _` |/ _ \ '_ \| | | |/ _` |   / __| __/ _` | __| | | / __| |  | |
 208 // | (_| |  __/ |_) | |_| | (_| |   \__ \ || (_| | |_| |_| \__ \ |  | |
 209 //  \__,_|\___|_.__/ \__,_|\__, |___|___/\__\__,_|\__|\__,_|___/ |  | |
 210 //                         |___/_____|                          \_\/_/
 211 void debug_status(struct afb_req req) {
 212    // Quick and dirty, dump current surfaces and layers
 213    AFB_REQ_DEBUG(req, "status");
 214
 215    // auto r = g_afb_instance->app.api.debug_status();
 216    // if (r.is_err()) {
 217    //    afb_req_fail(req, "failed", r.e.value());
 218    //    return;
 219    // }
 220
 221    auto o = json_object_new_object();
 222    json_object_object_add(o, "surfaces",
 223                           to_json(g_afb_instance->controller->sprops));
 224    json_object_object_add(o, "layers", to_json(g_afb_instance->controller->lprops));
 225 //   json_object_object_add(o, "screens",
 226 //                          to_json(g_afb_instance->controller->screens));
 227
 228    afb_req_success(req, o, "status");
 229 }
 230
 231 void debug_surfaces(afb_req req) {
 232    afb_req_success(req, to_json(g_afb_instance->controller->sprops), "surfaces");
 233 }
 234
 235 void debug_layers(afb_req req) {
 236    afb_req_success(req, to_json(g_afb_instance->controller->lprops), "layers");
 237 }
 238
 239 // Dummy register_surface implementation
 240 void register_surface(afb_req req) {
 241    AFB_DEBUG("register_surface");
 242
 243    auto jo = afb_req_json(req);
 244    json_object *jappid;
 245    if (! json_object_object_get_ex(jo, "appid", &jappid)) {
 246       afb_req_fail(req, "failed", "register_surface needs 'appid' integer argument");
 247       return;
 248    }
 249
 250    json_object *jsurfid;
 251    if (! json_object_object_get_ex(jo, "surfaceid", &jsurfid)) {
 252       afb_req_fail(req, "failed", "register_surface needs 'surfaceid' integer argument");
 253       return;
 254    }
 255
 256    uint32_t appid = json_object_get_int(jappid);
 257    uint32_t surfid = json_object_get_int(jsurfid);
 258
 259    if (appid > 0xff) {
 260       afb_req_fail(req, "failed", "invalid appid");
 261       return;
 262    }
 263
 264    if (surfid > 0xffff) {
 265       afb_req_fail(req, "failed", "invalid surfaceid");
 266       return;
 267    }
 268
 269    lognotice("register_surface, got appid %d and surfaceid %d", appid, surfid);
 270
 271    afb_req_success(req, json_object_new_int((appid << 16) + surfid), "success");
 272 }
 273
 274 #define WRAP(F)                                                             \
 275    [](afb_req req) noexcept {                                               \
 276       if (g_afb_instance == nullptr) {                                           \
 277          afb_req_fail(req, "failed",                                        \
 278                       "Binding not initialized, did the compositor die?");  \
 279          return;                                                            \
 280       }                                                                     \
 281       try {                                                                 \
 282          F(req);                                                            \
 283       } catch (std::exception & e) {                                        \
 284          afb_req_fail_f(req, "failed", "Uncaught exception: %s", e.what()); \
 285       }                                                                     \
 286    }
 287
 288 const struct afb_verb_v2 verbs[] = {
 289    {"debug::status", WRAP(debug_status), NULL, NULL, AFB_SESSION_NONE_V2},
 290    {"debug::layers", WRAP(debug_layers), NULL, NULL, AFB_SESSION_NONE_V2},
 291    {"debug::surfaces", WRAP(debug_surfaces), NULL, NULL, AFB_SESSION_NONE_V2},
 292
 293    {"register_surface", WRAP(register_surface), NULL, NULL, AFB_SESSION_NONE_V2},
 294    {}
 295 };
 296 }  // namespace
 297
 298 extern "C" const struct afb_binding_v2 afbBindingV2 = {
 299    "winman", NULL, NULL, verbs, NULL, binding_init, NULL, 1};