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196 lines (166 loc) · 5.85 KB
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// clang-format off
#include "EngineThread.h"
#include "ContainerWindow.h"
#include "Engine.h"
#include "EngineWindow.h"
#include "helpers\win32_misc.h"
#include "utils.h"
// clang-format on
namespace engine {
using EM = engine::Engine::Messages;
void EngineThread::run() {
TRACK_CALL_TEXT(PFC_string_formatter() << AppNameInternal << " EngineThread");
CoInitializeScope com_enable{};
engineWindow.makeContextCurrent();
// We can only destroy the Engine while EngineThread is beeing destroyed,
// since mainthread callbacks held by EngineThread might reference Engine objects.
std::optional<Engine> engine;
try {
engine.emplace(*this, engineWindow, styleManager);
engine->mainLoop();
} catch (std::exception& e) {
runInMainThread([&] {
engineWindow.container.destroyEngineWindow((PFC_string_formatter()
<< "Engine died with exception:\n"
<< e.what())
.c_str());
});
while (nullptr == dynamic_cast<EM::StopThread*>(messageQueue.pop().get())) {
// Going through the message queue has two purposes:
// 1. We wait for and find StopThread messages
// 2. We abandon any promises that are enqueued
}
}
}
void EngineThread::sendMessage(unique_ptr<::engine_messages::Message>&& msg) {
messageQueue.push(std::move(msg));
}
EngineThread::EngineThread(EngineWindow& engineWindow, StyleManager& styleManager)
: engineWindow(engineWindow), styleManager(styleManager), PlaylistCallback(*this) {
instances.insert(this);
styleManager.setChangeHandler([&] { this->on_style_change(); });
play_callback_reregister(flag_on_playback_new_track, true);
//reregister playlist manager
playlist_manager::get()->register_callback(this,
flag_on_item_focus_change |
flag_on_items_added |
flag_on_items_removed |
flag_on_items_reordered |
flag_on_items_selection_change |
flag_on_playlist_activate |
flag_on_playlist_renamed |
flag_on_playlists_removed);
std::packaged_task<void(EngineThread*)> task(&EngineThread::run);
thread = std::thread(std::move(task), this);
}
EngineThread::~EngineThread() {
instances.erase(this);
styleManager.setChangeHandler([] {});
this->send<EM::StopThread>();
// If the shutdown causes an exception, we need a second
// message to shut down the exception handler.
this->send<EM::StopThread>();
if (thread.joinable())
thread.join();
}
HWND EngineThread::GetEngineWindowWnd() {
return engineWindow.hWnd;
}
size_t EngineThread::GetDispFlags() {
return engineWindow.container.GetDisplayFlag();
}
bool EngineThread::GetCoverDispFlagU(DispFlags flg) {
return engineWindow.container.GetCoverDispFlagU(flg);
}
void EngineThread::SetCoverDispFlagU(DispFlags flg, bool val) {
return engineWindow.container.SetCoverDispFlagU(flg, val);
}
bool EngineThread::IsWholeLibrary() {
return engineWindow.container.coverIsWholeLibrary();
}
//serves playlist callback engine thread parent
bool EngineThread::IsSourcePlaylistOn(t_size playlist, PlSrcFilter mode) {
return engineWindow.container.IsSourcePlaylistOn(playlist, mode);
}
void EngineThread::GetState(src_state& srcstate, bool init) {
return engineWindow.container.GetState(srcstate, init);
}
void EngineThread::GetPlaylistSource(pfc::string& out, bool activesource, bool bguid) {
if (activesource) {
if (bguid) {
out = engineWindow.container.GetSourceActivePlaylistGUID();
} else {
out = engineWindow.container.GetSourceActivePlaylistName();
}
} else {
if (bguid) {
out = engineWindow.container.GetSourcePlaylistGUID();
} else {
out = engineWindow.container.GetSourcePlaylistName();
}
}
}
void EngineThread::SetPlaylistSource(pfc::string strval, bool activesource, bool bguid) {
if (activesource) {
if (bguid) {
engineWindow.container.SetSourceActivePlaylistGUID(strval);
} else {
engineWindow.container.SetSourceActivePlaylistName(strval);
}
} else {
if (bguid) {
engineWindow.container.SetSourcePlaylistGUID(strval);
} else {
engineWindow.container.SetSourcePlaylistName(strval);
}
}
}
//..
t_size EngineThread::FindSourcePlaylist(PlSrcFilter mode) const {
return engineWindow.container.FindSourcePlaylist(mode);
}
void EngineThread::invalidateWindow() {
RedrawWindow(engineWindow.hWnd, nullptr, nullptr, RDW_INVALIDATE);
}
const metadb_handle_list_ref EngineThread::getEngineWindowSelection() {
return engineWindow.getSelection(engineWindow.container.coverIsWholeLibrary());
}
std::unordered_set<EngineThread*> EngineThread::instances{};
void EngineThread::forEach(std::function<void(EngineThread&)> f) {
for (auto instance : instances) {
f(*instance);
}
}
void EngineThread::on_style_change() {
send<EM::TextFormatChangedMessage>();
invalidateWindow();
}
void EngineThread::on_playback_new_track(metadb_handle_ptr p_track) {
send<EM::PlaybackNewTrack>(p_track);
}
void EngineThread::on_items_added(metadb_handle_list_cref p_data) {
send<EM::LibraryItemsAdded>(p_data, libraryVersion);
}
void EngineThread::on_items_removed(metadb_handle_list_cref p_data) {
send<EM::LibraryItemsRemoved>(p_data, libraryVersion);
}
void EngineThread::on_items_modified(metadb_handle_list_cref p_data) {
send<EM::LibraryItemsModified>(p_data, libraryVersion);
}
void EngineThread::runInMainThread(std::function<void()> f) {
callbackHolder.addCallback(f);
}
CallbackHolder::CallbackHolder() : deadPtr(make_shared<bool>(false)) {}
CallbackHolder::~CallbackHolder() noexcept {
PFC_ASSERT(core_api::is_main_thread());
*deadPtr = true;
}
void CallbackHolder::addCallback(std::function<void()> f) {
fb2k::inMainThread([f, deadPtr = this->deadPtr] {
TRACK_CALL_TEXT(PFC_string_formatter() << AppNameInternal << "::inMainThread");
if (!*deadPtr) {
f();
}
});
}
} // namespace engine