diff options
| -rw-r--r-- | CMakeLists.txt | 48 | ||||
| -rw-r--r-- | LICENSE | 177 | ||||
| -rw-r--r-- | src/CMakeLists.txt | 79 | ||||
| -rw-r--r-- | src/libwindowmanager.cpp | 489 | ||||
| -rw-r--r-- | src/libwindowmanager.h | 58 | ||||
| -rw-r--r-- | windowmanager.pc.in | 11 |
6 files changed, 862 insertions, 0 deletions
diff --git a/CMakeLists.txt b/CMakeLists.txt new file mode 100644 index 0000000..8397e92 --- /dev/null +++ b/CMakeLists.txt @@ -0,0 +1,48 @@ +# +# Copyright (c) 2017 TOYOTA MOTOR CORPORATION +# +# 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. +# + +cmake_minimum_required(VERSION 2.8) + +project(WindowManagerTMC) + +set(PACKAGE_VERSION_MAJOR 0) +set(PACKAGE_VERSION_MINOR 0) +set(PACKAGE_VERSION_REVISION 1) +set(PACKAGE_VERSION "${PACKAGE_VERSION_MAJOR}.${PACKAGE_VERSION_MINOR}.${PACKAGE_VERSION_REVISION}") + +find_package(PkgConfig REQUIRED) +include(GNUInstallDirs) + +pkg_check_modules(WLC wayland-client>=1.11.0 REQUIRED) + +# Should modernize the following somehow... +set(ENABLE_SCOPE_TRACING OFF CACHE BOOL "Enable scope enter/leave messages for certain parts of the code.") +if(ENABLE_SCOPE_TRACING) + add_definitions(-DSCOPE_TRACING) +else() + remove_definitions(-DSCOPE_TRACING) +endif() + +set(SANITIZER_MODE "none" CACHE STRING "Build using a specific sanitizer (e.g. 'address', 'thread', 'leak', 'undefined'), depends on compiler; default none") + +set(LINK_LIBCXX OFF CACHE BOOL "Link against LLVMs libc++") + +add_subdirectory(src) + +configure_file(windowmanager.pc.in windowmanager.pc @ONLY) +INSTALL(FILES ${CMAKE_CURRENT_BINARY_DIR}/windowmanager.pc + DESTINATION + ${CMAKE_INSTALL_LIBDIR}/pkgconfig) @@ -0,0 +1,177 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. 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In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt new file mode 100644 index 0000000..96cad55 --- /dev/null +++ b/src/CMakeLists.txt @@ -0,0 +1,79 @@ +# +# Copyright (c) 2017 TOYOTA MOTOR CORPORATION +# +# 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(FindPkgConfig) + +pkg_check_modules(AFB REQUIRED libafbwsc) +pkg_check_modules(SD REQUIRED libsystemd>=222) + +set(TARGET_LIBWM windowmanager) + +add_library(${TARGET_LIBWM} SHARED + libwindowmanager.cpp + libwindowmanager.h) + +target_include_directories(${TARGET_LIBWM} + PRIVATE + ${AFB_INCLUDE_DIRS} + ${SD_INCLUDE_DIRS}) + +target_link_libraries(${TARGET_LIBWM} + PUBLIC + -lpthread + ${AFB_LIBRARIES} + ${SD_LIBRARIES}) + +if(NOT ${CMAKE_BUILD_TYPE} STREQUAL "Release") + target_compile_definitions(${TARGET_LIBWM} + PRIVATE + _GLIBCXX_DEBUG) +endif() + +target_compile_options(${TARGET_LIBWM} + PRIVATE + -Wall -Wextra -Wno-unused-parameter -Wno-comment) + +set_target_properties(${TARGET_LIBWM} + PROPERTIES + # INTERPROCEDURAL_OPTIMIZATION ON + CXX_EXTENSIONS OFF + CXX_STANDARD 14 + CXX_STANDARD_REQUIRED ON) + +if (LINK_LIBCXX) + set_target_properties(${TARGET_LIBWM} + PROPERTIES + LINK_FLAGS "-lc++") +endif() + +if (NOT ${SANITIZER_MODE} STREQUAL "none" AND NOT ${SANITIZER_MODE} STREQUAL "") + target_compile_options(${TARGET_LIBWM} + PRIVATE + -fsanitize=${SANITIZER_MODE} -g -fno-omit-frame-pointer) + set_target_properties(${TARGET_LIBWM} + PROPERTIES + LINK_FLAGS "-fsanitize=${SANITIZER_MODE} -g") +endif() + +install( + TARGETS ${TARGET_LIBWM} + DESTINATION ${CMAKE_INSTALL_LIBDIR} + COMPONENT "runtime") + +install( + FILES libwindowmanager.h + DESTINATION ${CMAKE_INSTALL_INCLUDEDIR} + COMPONENT "development") diff --git a/src/libwindowmanager.cpp b/src/libwindowmanager.cpp new file mode 100644 index 0000000..263dd57 --- /dev/null +++ b/src/libwindowmanager.cpp @@ -0,0 +1,489 @@ +/* + * Copyright (c) 2017 TOYOTA MOTOR CORPORATION + * + * 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 "libwindowmanager.h" + +#include <cassert> +#include <cctype> +#include <cerrno> +#include <cstdio> +#include <cstdlib> +#include <cstring> + +#include <atomic> +#include <map> +#include <mutex> +#include <set> +#include <queue> + +#include <unistd.h> + +#include <systemd/sd-event.h> + +#include <json-c/json.h> +#include <pthread.h> + +extern "C" { +#include <afb/afb-ws-client.h> +#include <afb/afb-wsj1.h> +} + +#define UNUSED(x) (void)(x) + +/** + * @class LibWindowmanager::Impl + */ +class LibWindowmanager::Impl { + friend class LibWindowmanager; + + // This is the LibWindowmanager interface impl + int init(int port, char const *token); + + // WM API + int requestSurface(const char *label); + int activateSurface(const char *label); + int deactivateSurface(const char *label); + int endDraw(const char *label); + + void set_event_handler(enum EventType et, handler_fun func); + + Impl(); + ~Impl(); + + struct afb_wsj1 *wsj1; + struct sd_event *loop; + + std::set<std::string> labels; + std::map<EventType, handler_fun> handlers; + std::queue<std::pair<handler_fun, std::string>> handler_queue; + + int api_call(const char *verb, json_object *object, + const std::function<void(bool, json_object *)> &onReply); + +public: + void event(char const *et, char const *label); +private: + int runEventLoop(); +}; + +namespace { + +constexpr const int token_maxlen = 20; +constexpr const char *const wmAPI = "windowmanager"; + +#define CONCAT_(X, Y) X##Y +#define CONCAT(X, Y) CONCAT_(X, Y) + +#ifndef SCOPE_TRACING +#define TRACE() +#define TRACEN(N) +#else +#define TRACE() \ + ScopeTrace __attribute__((unused)) CONCAT(trace_scope_, __LINE__)(__func__) +#define TRACEN(N) \ + ScopeTrace __attribute__((unused)) CONCAT(named_trace_scope_, __LINE__)(#N) + +struct ScopeTrace { + thread_local static int indent; + char const *f{}; + explicit ScopeTrace(char const *func) : f(func) { + fprintf(stderr, "%*s%s -->\n", 2 * indent++, "", this->f); + } + ~ScopeTrace() { fprintf(stderr, "%*s%s <--\n", 2 * --indent, "", this->f); } +}; +thread_local int ScopeTrace::indent = 0; +#endif + +/* called when wsj1 receives a method invocation */ +void onCall(void *closure, const char *api, const char *verb, + struct afb_wsj1_msg *msg) { + TRACE(); + UNUSED(closure); + UNUSED(verb); + UNUSED(api); + UNUSED(msg); +} + +/* called when wsj1 receives an event */ +void onEvent(void *closure, const char *event, afb_wsj1_msg *msg) { + TRACE(); + + // check API name in event + if (0 != strncmp(wmAPI, event, strlen(wmAPI))) { + return; + } + + reinterpret_cast<LibWindowmanager::Impl *>(closure)->event( + event, json_object_get_string( + json_object_object_get(afb_wsj1_msg_object_j(msg), "data"))); +} + +/* called when wsj1 hangsup */ +void onHangup(void *closure, afb_wsj1 *wsj1) { + TRACE(); + UNUSED(closure); + UNUSED(wsj1); + fputs("Hangup, the WindowManager vanished\n", stderr); + exit(1); // XXX: there should be something ... *better* here. +} + +constexpr struct afb_wsj1_itf itf = { + onHangup, onCall, onEvent, +}; + +// XXX: I am not sure this is the right thing to do though... +std::recursive_mutex dispatch_mutex; + +json_object *drawing_name_json_argument(char const *label) { + json_object *j = json_object_new_object(); + json_object_object_add(j, "drawing_name", json_object_new_string(label)); + return j; +} + +} // namespace + +/** + * @class LibWindowmanager::Impl::Impl + */ +LibWindowmanager::Impl::Impl() : wsj1{}, loop{}, labels(), handlers() { TRACE(); } + +LibWindowmanager::Impl::~Impl() { + TRACE(); + afb_wsj1_unref(wsj1); + sd_event_unref(loop); +} + +int LibWindowmanager::Impl::init(int port, char const *token) { + TRACE(); + char *uribuf = nullptr; + int rc = -1; + + if (this->loop != nullptr && this->wsj1 != nullptr) { + fputs("LibWindowmanager instance is already initialized!\n", stderr); + rc = -EALREADY; + goto fail; + } + + if (token == nullptr) { + fputs("Token is invalid\n", stderr); + rc = -EINVAL; + goto fail; + } + + if (port < 1 || port > 0xffff) { + fputs("Port is invalid\n", stderr); + rc = -EINVAL; + goto fail; + } + + /* get the default event loop */ + rc = sd_event_default(&this->loop); + if (rc < 0) { + fprintf(stderr, "Connection to default event loop failed: %s\n", + strerror(-rc)); + goto fail; + } + + asprintf(&uribuf, "ws://localhost:%d/api?token=%s", port, token); + + /* connect the websocket wsj1 to the uri given by the first argument */ + this->wsj1 = afb_ws_client_connect_wsj1( + this->loop, uribuf, const_cast<struct afb_wsj1_itf *>(&itf), this); + if (this->wsj1 == nullptr) { + sd_event_unref(this->loop); + this->loop = nullptr; + fprintf(stderr, "Connection to %s failed: %m\n", uribuf); + rc = -errno; + goto fail; + } + + this->runEventLoop(); + + return 0; + +fail: + return rc; +} + +int LibWindowmanager::Impl::requestSurface(const char *label) { + TRACE(); + + if (this->labels.find(label) != this->labels.end()) { + fputs("Surface label already known!\n", stderr); + return -EINVAL; + } + + json_object *j = drawing_name_json_argument(label); + + int rc = -1; + /* send the request */ + int rc2 = + this->api_call("RequestSurface", j, [&rc](bool ok, json_object *j) { + if (ok) { + int id = + json_object_get_int(json_object_object_get(j, "response")); + char *buf; + asprintf(&buf, "%d", id); + printf("setenv(\"QT_IVI_SURFACE_ID\", %s, 1)\n", buf); + if (setenv("QT_IVI_SURFACE_ID", buf, 1) != 0) { + fprintf(stderr, "putenv failed: %m\n"); + rc = -errno; + } else { + rc = 0; // Single point of success + } + } else { + fprintf(stderr, "Could not get surface ID from WM: %s\n", + j != nullptr ? json_object_to_json_string_ext( + j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + rc = -EINVAL; + } + }); + + if (rc2 < 0) { + rc = rc2; + } + + if (rc >= 0) { + this->labels.insert(this->labels.end(), label); + } + + return rc; +} + +int LibWindowmanager::Impl::activateSurface(const char *label) { + TRACE(); + json_object *j = drawing_name_json_argument(label); + return this->api_call("ActivateSurface", j, [](bool ok, json_object *j) { + if (!ok) { + fprintf(stderr, "API Call activate_surface() failed: %s\n", + j != nullptr ? json_object_to_json_string_ext( + j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + } + }); +} + +int LibWindowmanager::Impl::deactivateSurface(const char *label) { + TRACE(); + json_object *j = drawing_name_json_argument(label); + return this->api_call("DeactivateSurface", j, [](bool ok, json_object *j) { + if (!ok) { + fprintf(stderr, "API Call deactivate_surface() failed: %s\n", + j != nullptr ? json_object_to_json_string_ext( + j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + } + }); +} + +int LibWindowmanager::Impl::endDraw(const char *label) { + TRACE(); + json_object *j = drawing_name_json_argument(label); + return this->api_call("EndDraw", j, [](bool ok, json_object *j) { + if (!ok) { + fprintf(stderr, "API Call endDraw() failed: %s\n", + j != nullptr ? json_object_to_json_string_ext( + j, JSON_C_TO_STRING_PRETTY) + : "no-info"); + } + }); +} + +void LibWindowmanager::Impl::set_event_handler( + enum EventType et, std::function<void(char const *)> func) { + TRACE(); + + if (et >= 1 && et <= 6) { // Yeah ... just go with it! + this->handlers[et] = std::move(func); + } +} + +namespace { +std::pair<bool, LibWindowmanager::EventType> make_event_type(char const *et) { + // Event have the form "$API/$EVENT", just try to find the first / and + // get on with it. + char const *et2 = strchr(et, '/'); + if (et2 != nullptr) { + et = et2 + 1; + } + +#define ET(N, A) \ + do { \ + if (strcasecmp(et, N) == 0) \ + return std::pair<bool, LibWindowmanager::EventType>( \ + true, CONCAT(LibWindowmanager::Event_, A)); \ + } while (false) + + ET("active", Active); + ET("inactive", Inactive); + ET("visible", Visible); + ET("invisible", Invisible); + ET("syncdraw", SyncDraw); + ET("flushdraw", FlushDraw); +#undef ET + + return std::pair<bool, LibWindowmanager::EventType>(false, + LibWindowmanager::Event_Active); +} +} // namespace + +static void _on_reply_static(void *closure, struct afb_wsj1_msg *msg) +{ + fprintf(stderr, "Call %s\n", __func__); +} + + +/// object will be json_object_put +int LibWindowmanager::Impl::api_call( + const char *verb, json_object *object, + const std::function<void(bool, json_object *)> &onReply) { + TRACE(); + + int rc = 0; + if (0 == strcmp("RequestSurface", verb)) { + // We need to wrap the actual onReply call once in order to + // *look* like a normal functions pointer (std::functions<> + // with captures cannot convert to function pointers). + // Alternatively we could setup a local struct and use it as + // closure, but I think it is cleaner this way. + int call_rc = 0; + std::atomic<bool> returned{}; + returned.store(false, std::memory_order_relaxed); + std::function<void(bool, json_object *)> wrappedOnReply = + [&returned, &call_rc, &onReply](bool ok, json_object *j) { + TRACEN(wrappedOnReply); + call_rc = ok ? 0 : -EINVAL; + // We know it failed, but there may be an explanation in the + // json object. + { + TRACEN(onReply); + onReply(ok, j); + } + returned.store(true, std::memory_order_release); + }; + + // make the actual call, use wrappedOnReply as closure + rc = afb_wsj1_call_j( + this->wsj1, wmAPI, verb, object, + [](void *closure, afb_wsj1_msg *msg) { + TRACEN(callClosure); + auto *onReply = + reinterpret_cast<std::function<void(bool, json_object *)> *>( + closure); + (*onReply)(!(afb_wsj1_msg_is_reply_ok(msg) == 0), + afb_wsj1_msg_object_j(msg)); + }, + &wrappedOnReply); + + if (0 == rc) { + // We need to wait until "returned" got set, this is necessary + // if events get triggered by the call (and would be dispatched before + // the actual call-reply). + while (!returned.load(std::memory_order_consume)) { + sd_event_run(loop, 16); + } + + // return the actual API call result + rc = call_rc; + } + } + else { + rc = afb_wsj1_call_j(this->wsj1, wmAPI, verb, object, _on_reply_static, this); + } + + if (rc < 0) { + fprintf( + stderr, "calling %s/%s(%s) failed: %m\n", wmAPI, verb, + json_object_to_json_string_ext(object, JSON_C_TO_STRING_PRETTY)); + // Call the reply handler regardless with a NULL json_object* + onReply(false, nullptr); + } + + return rc; +} + +void LibWindowmanager::Impl::event(char const *et, char const *label) { + TRACE(); + auto oet = make_event_type(et); + if (!oet.first) { + fprintf(stderr, "Unknown event type string '%s'\n", et); + return; + } + + auto i = this->handlers.find(oet.second); + if (i != this->handlers.end()) { + if (this->labels.find(label) != this->labels.end()) { + i->second(label); + } + } +} + +static void *event_loop_run(void *args){ + struct sd_event* loop = (struct sd_event*)(args); + for(;;) + sd_event_run(loop, 30000000); +} + +int LibWindowmanager::Impl::runEventLoop() { + if(this->wsj1 && this->loop) + { + pthread_t thread_id; + int ret = pthread_create(&thread_id, NULL, event_loop_run, this->loop); + if(ret != 0) + { + printf("Cannot run eventloop due to error:%d", errno); + return -1; + } + else + return thread_id; + } + else + { + printf("Connecting is not established yet"); + return -1; + } +} + +/** + * @class LibWindowmanager + */ +int LibWindowmanager::init(int port, char const *token) { + return this->d->init(port, token); +} + +int LibWindowmanager::requestSurface(const char *label) { + return this->d->requestSurface(label); +} + +int LibWindowmanager::activateSurface(const char *label) { + return this->d->activateSurface(label); +} + +int LibWindowmanager::deactivateSurface(const char *label) { + return this->d->deactivateSurface(label); +} + +int LibWindowmanager::endDraw(const char *label) { return this->d->endDraw(label); } + +void LibWindowmanager::set_event_handler(enum EventType et, + std::function<void(char const *label)> f) { + return this->d->set_event_handler(et, std::move(f)); +} + +LibWindowmanager::LibWindowmanager() : d(new Impl) {} + +LibWindowmanager::~LibWindowmanager() { delete d; } diff --git a/src/libwindowmanager.h b/src/libwindowmanager.h new file mode 100644 index 0000000..6c13763 --- /dev/null +++ b/src/libwindowmanager.h @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2017 TOYOTA MOTOR CORPORATION + * + * 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. + */ + +#ifndef LIBWINDOWMANAGER_H +#define LIBWINDOWMANAGER_H + +#include <functional> + +class LibWindowmanager { +public: + LibWindowmanager(); + ~LibWindowmanager(); + + LibWindowmanager(const LibWindowmanager &) = delete; + LibWindowmanager &operator=(const LibWindowmanager &) = delete; + + using handler_fun = std::function<void(const char *)>; + + enum EventType { + Event_Active = 1, + Event_Inactive, + + Event_Visible, + Event_Invisible, + + Event_SyncDraw, + Event_FlushDraw, + }; + + int init(int port, char const *token); + + // WM API + int requestSurface(const char *label); + int activateSurface(const char *label); + int deactivateSurface(const char *label); + int endDraw(const char *label); + + void set_event_handler(enum EventType et, handler_fun f); + + struct Impl; + +private: + Impl *const d; +}; +#endif // LIBWINDOWMANAGER_H diff --git a/windowmanager.pc.in b/windowmanager.pc.in new file mode 100644 index 0000000..2a70037 --- /dev/null +++ b/windowmanager.pc.in @@ -0,0 +1,11 @@ +includedir=@PROJECT_INCLUDEDIR@ +libdir=@PROJECT_LIBDIR@ + +Name: @PROJECT_PRETTY_NAME@ +Description: @PROJECT_DESCRIPTION@ +Version: @PROJECT_VERSION@ +URL: @PROJECT_URL@ + +Requires: json-c afb-daemon +Cflags: -I${includedir} +Libs: -L${libdir} -lwindowmanager |