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Merge pull request #4201 from FearlessTobi/backport-review-comments 

SDLJoystick: Backport review comments from yuzu #1275
This commit is contained in:
Weiyi Wang 2018-09-11 10:13:01 -04:00 committed by GitHub
parent 9df1461cec 0238cf52b7
commit abeee6859e
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 23 additions and 26 deletions
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1
src/citra/emu_window/emu_window_sdl2.cpp
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@ -191,6 +191,7 @@ void EmuWindow_SDL2::PollEvents() {
break;
default:
InputCommon::SDL::HandleGameControllerEvent(event);
break;
}
}
}

48
src/input_common/sdl/sdl.cpp
View File

@ -2,6 +2,7 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <atomic>
#include <cmath>
#include <functional>
@ -30,7 +31,7 @@ class SDLJoystick;
class SDLButtonFactory;
class SDLAnalogFactory;
/// Map of GUID of a list of corresponding vurtual Joysticks
/// Map of GUID of a list of corresponding virtual Joysticks
static std::unordered_map<std::string, std::vector<std::shared_ptr<SDLJoystick>>> joystick_map;
static std::mutex joystick_map_mutex;
@ -52,11 +53,9 @@ static std::string GetGUID(SDL_Joystick* joystick) {
class SDLJoystick {
public:
SDLJoystick(const std::string& guid_, int port_, SDL_Joystick* joystick,
SDLJoystick(std::string guid_, int port_, SDL_Joystick* joystick,
decltype(&SDL_JoystickClose) deleter = &SDL_JoystickClose)
: guid{guid_}, port{port_}, sdl_joystick{joystick, deleter} {}
~SDLJoystick() = default;
: guid{std::move(guid_)}, port{port_}, sdl_joystick{joystick, deleter} {}
void SetButton(int button, bool value) {
std::lock_guard<std::mutex> lock(mutex);
@ -134,8 +133,8 @@ private:
std::unordered_map<int, Sint16> axes;
std::unordered_map<int, Uint8> hats;
} state;
const std::string guid;
const int port;
std::string guid;
int port;
std::unique_ptr<SDL_Joystick, decltype(&SDL_JoystickClose)> sdl_joystick;
mutable std::mutex mutex;
};
@ -145,18 +144,17 @@ private:
*/
static std::shared_ptr<SDLJoystick> GetSDLJoystickByGUID(const std::string& guid, int port) {
std::lock_guard<std::mutex> lock(joystick_map_mutex);
const auto& it = joystick_map.find(guid);
const auto it = joystick_map.find(guid);
if (it != joystick_map.end()) {
while (it->second.size() <= port) {
auto joystick = std::make_shared<SDLJoystick>(guid, it->second.size(), nullptr,
[](SDL_Joystick*) {});
it->second.emplace_back(joystick);
it->second.emplace_back(std::move(joystick));
}
return it->second[port];
}
auto joystick = std::make_shared<SDLJoystick>(guid, 0, nullptr, [](SDL_Joystick*) {});
joystick_map[guid].emplace_back(joystick);
return joystick;
return joystick_map[guid].emplace_back(std::move(joystick));
}
/**
@ -174,11 +172,11 @@ static std::shared_ptr<SDLJoystick> GetSDLJoystickBySDLID(SDL_JoystickID sdl_id)
return sdl_joystick == joystick->GetSDLJoystick();
});
if (vec_it != map_it->second.end()) {
// This is the common case: There is already an existing SDLJoystick maped to a
// This is the common case: There is already an existing SDL_Joystick maped to a
// SDLJoystick. return the SDLJoystick
return *vec_it;
}
// Search for a SDLJoystick without a mapped SDLJoystick...
// Search for a SDLJoystick without a mapped SDL_Joystick...
auto nullptr_it = std::find_if(map_it->second.begin(), map_it->second.end(),
[](const std::shared_ptr<SDLJoystick>& joystick) {
return !joystick->GetSDLJoystick();
@ -188,14 +186,13 @@ static std::shared_ptr<SDLJoystick> GetSDLJoystickBySDLID(SDL_JoystickID sdl_id)
(*nullptr_it)->SetSDLJoystick(sdl_joystick);
return *nullptr_it;
}
// There is no SDLJoystick without a mapped SDLJoystick
// There is no SDLJoystick without a mapped SDL_Joystick
// Create a new SDLJoystick
auto joystick = std::make_shared<SDLJoystick>(guid, map_it->second.size(), sdl_joystick);
map_it->second.emplace_back(joystick);
return joystick;
return map_it->second.emplace_back(std::move(joystick));
}
auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick);
joystick_map[guid].emplace_back(joystick);
return joystick;
return joystick_map[guid].emplace_back(std::move(joystick));
}
void InitJoystick(int joystick_index) {
@ -208,11 +205,11 @@ void InitJoystick(int joystick_index) {
std::string guid = GetGUID(sdl_joystick);
if (joystick_map.find(guid) == joystick_map.end()) {
auto joystick = std::make_shared<SDLJoystick>(guid, 0, sdl_joystick);
joystick_map[guid].emplace_back(joystick);
joystick_map[guid].emplace_back(std::move(joystick));
return;
}
auto& joystick_guid_list = joystick_map[guid];
const auto& it = std::find_if(
const auto it = std::find_if(
joystick_guid_list.begin(), joystick_guid_list.end(),
[](const std::shared_ptr<SDLJoystick>& joystick) { return !joystick->GetSDLJoystick(); });
if (it != joystick_guid_list.end()) {
@ -220,7 +217,7 @@ void InitJoystick(int joystick_index) {
return;
}
auto joystick = std::make_shared<SDLJoystick>(guid, joystick_guid_list.size(), sdl_joystick);
joystick_guid_list.emplace_back(joystick);
joystick_guid_list.emplace_back(std::move(joystick));
}
void CloseJoystick(SDL_Joystick* sdl_joystick) {
@ -228,13 +225,12 @@ void CloseJoystick(SDL_Joystick* sdl_joystick) {
std::string guid = GetGUID(sdl_joystick);
// This call to guid is save since the joystick is guranteed to be in that map
auto& joystick_guid_list = joystick_map[guid];
const auto& joystick_it =
const auto joystick_it =
std::find_if(joystick_guid_list.begin(), joystick_guid_list.end(),
[&sdl_joystick](const std::shared_ptr<SDLJoystick>& joystick) {
return joystick->GetSDLJoystick() == sdl_joystick;
});
(*joystick_it)->SetSDLJoystick(nullptr, [](SDL_Joystick*) {});
return;
}
void HandleGameControllerEvent(const SDL_Event& event) {
@ -294,10 +290,10 @@ void PollLoop() {
// Wait for 10 ms or until an event happens
if (SDL_WaitEventTimeout(&event, 10)) {
// Don't handle the event if we are configuring
if (!polling) {
HandleGameControllerEvent(event);
} else {
if (polling) {
event_queue.Push(event);
} else {
HandleGameControllerEvent(event);
}
}
}