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FrontendCommon: Make SDL2 dependency optional
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@stenzek
stenzek committed Feb 28, 2020
1 parent f35970f commit 9ab5212
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Showing 5 changed files with 102 additions and 70 deletions.
1 change: 1 addition & 0 deletions CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@ endif()

# Common include/library directories on Windows.
if(WIN32)
set(SDL2_FOUND TRUE)
set(SDL2_INCLUDE_DIRS "${CMAKE_CURRENT_SOURCE_DIR}/dep/msvc/sdl2/include")
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(SDL2_LIBRARIES "${CMAKE_CURRENT_SOURCE_DIR}/dep/msvc/sdl2/lib64/SDL2.lib")
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23 changes: 15 additions & 8 deletions src/frontend-common/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -5,14 +5,21 @@ add_library(frontend-common
icon.h
imgui_styles.cpp
imgui_styles.h
sdl_audio_stream.cpp
sdl_audio_stream.h
sdl_controller_interface.cpp
sdl_controller_interface.h
sdl_initializer.cpp
sdl_initializer.h
)

target_include_directories(frontend-common PRIVATE ${SDL2_INCLUDE_DIRS})
target_link_libraries(frontend-common PRIVATE core common imgui ${SDL2_LIBRARIES})
if(SDL2_FOUND)
target_sources(frontend-common PRIVATE
sdl_audio_stream.cpp
sdl_audio_stream.h
sdl_controller_interface.cpp
sdl_controller_interface.h
sdl_initializer.cpp
sdl_initializer.h
)
target_compile_definitions(frontend-common PRIVATE "WITH_SDL2=1")
target_include_directories(frontend-common PRIVATE ${SDL2_INCLUDE_DIRS})
target_link_libraries(frontend-common PRIVATE ${SDL2_LIBRARIES})
endif()

target_link_libraries(frontend-common PRIVATE core common imgui)

122 changes: 72 additions & 50 deletions src/frontend-common/common_host_interface.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,10 @@
#include "core/game_list.h"
#include "core/gpu.h"
#include "core/system.h"
#ifdef WITH_SDL2
#include "sdl_audio_stream.h"
#include "sdl_controller_interface.h"
#endif
#include <cstring>
Log_SetChannel(CommonHostInterface);

Expand All @@ -35,8 +37,10 @@ std::unique_ptr<AudioStream> CommonHostInterface::CreateAudioStream(AudioBackend
case AudioBackend::Cubeb:
return AudioStream::CreateCubebAudioStream();

#ifdef WITH_SDL2
case AudioBackend::SDL:
return SDLAudioStream::Create();
#endif

default:
return nullptr;
Expand Down Expand Up @@ -102,12 +106,28 @@ bool CommonHostInterface::HandleHostKeyEvent(HostKeyCode key, bool pressed)
void CommonHostInterface::UpdateInputMap(SettingsInterface& si)
{
m_keyboard_input_handlers.clear();
#ifdef WITH_SDL2
g_sdl_controller_interface.ClearControllerBindings();
#endif

UpdateControllerInputMap(si);
UpdateHotkeyInputMap(si);
}

static bool SplitBinding(const std::string& binding, std::string_view* device, std::string_view* sub_binding)
{
const std::string::size_type slash_pos = binding.find('/');
if (slash_pos == std::string::npos)
{
Log_WarningPrintf("Malformed binding: '%s'", binding.c_str());
return false;
}

*device = std::string_view(binding).substr(0, slash_pos);
*sub_binding = std::string_view(binding).substr(slash_pos + 1);
return true;
}

void CommonHostInterface::UpdateControllerInputMap(SettingsInterface& si)
{
for (u32 controller_index = 0; controller_index < 2; controller_index++)
Expand All @@ -127,7 +147,11 @@ void CommonHostInterface::UpdateControllerInputMap(SettingsInterface& si)
si.GetStringList(category, TinyString::FromFormat("Button%s", button_name.c_str()));
for (const std::string& binding : bindings)
{
AddButtonToInputMap(binding, [this, controller_index, button_code](bool pressed) {
std::string_view device, button;
if (!SplitBinding(binding, &device, &button))
continue;

AddButtonToInputMap(binding, device, button, [this, controller_index, button_code](bool pressed) {
if (!m_system)
return;

Expand All @@ -148,7 +172,11 @@ void CommonHostInterface::UpdateControllerInputMap(SettingsInterface& si)
si.GetStringList(category, TinyString::FromFormat("Axis%s", axis_name.c_str()));
for (const std::string& binding : bindings)
{
AddAxisToInputMap(binding, [this, controller_index, axis_code](float value) {
std::string_view device, axis;
if (!SplitBinding(binding, &device, &axis))
continue;

AddAxisToInputMap(binding, device, axis, [this, controller_index, axis_code](float value) {
if (!m_system)
return;

Expand All @@ -167,39 +195,40 @@ void CommonHostInterface::UpdateHotkeyInputMap(SettingsInterface& si)
{
const std::vector<std::string> bindings = si.GetStringList("Hotkeys", hi.name);
for (const std::string& binding : bindings)
AddButtonToInputMap(binding, hi.handler);
{
std::string_view device, button;
if (!SplitBinding(binding, &device, &button))
continue;

AddButtonToInputMap(binding, device, button, hi.handler);
}
}
}

void CommonHostInterface::AddButtonToInputMap(const std::string& binding, InputButtonHandler handler)
bool CommonHostInterface::AddButtonToInputMap(const std::string& binding, const std::string_view& device,
const std::string_view& button, InputButtonHandler handler)
{
const std::string::size_type slash_pos = binding.find('/');
if (slash_pos == std::string::npos)
{
Log_WarningPrintf("Malformed button binding: '%s'", binding.c_str());
return;
}

const auto device = std::string_view(binding).substr(0, slash_pos);
const auto button = std::string_view(binding).substr(slash_pos + 1);
if (device == "Keyboard")
{
std::optional<int> key_id = GetHostKeyCode(button);
if (!key_id.has_value())
{
Log_WarningPrintf("Unknown keyboard key in binding '%s'", binding.c_str());
return;
return false;
}

m_keyboard_input_handlers.emplace(key_id.value(), std::move(handler));
return true;
}
else if (device == "Controller")

#ifdef WITH_SDL2
if (device == "Controller")
{
const std::optional<int> controller_index = StringUtil::FromChars<int>(device.substr(10));
if (!controller_index || *controller_index < 0)
{
Log_WarningPrintf("Invalid controller index in button binding '%s'", binding.c_str());
return;
return false;
}

if (button.find_first_of("Button") == 0)
Expand All @@ -209,8 +238,10 @@ void CommonHostInterface::AddButtonToInputMap(const std::string& binding, InputB
!g_sdl_controller_interface.BindControllerButton(*controller_index, *button_index, std::move(handler)))
{
Log_WarningPrintf("Failed to bind controller button '%s' to button", binding.c_str());
return;
return false;
}

return true;
}
else if (button.find_first_of("+Axis") == 0 || button.find_first_of("-Axis"))
{
Expand All @@ -220,40 +251,32 @@ void CommonHostInterface::AddButtonToInputMap(const std::string& binding, InputB
positive, std::move(handler)))
{
Log_WarningPrintf("Failed to bind controller axis '%s' to button", binding.c_str());
return;
return false;
}

return true;
}
else
{
Log_WarningPrintf("Malformed controller binding '%s' in button", binding.c_str());
return;
}
}
else
{
Log_WarningPrintf("Unknown input device in button binding '%s'", binding.c_str());
return;

Log_WarningPrintf("Malformed controller binding '%s' in button", binding.c_str());
return false;
}
#endif

Log_WarningPrintf("Unknown input device in button binding '%s'", binding.c_str());
return false;
}

void CommonHostInterface::AddAxisToInputMap(const std::string& binding, InputAxisHandler handler)
bool CommonHostInterface::AddAxisToInputMap(const std::string& binding, const std::string_view& device,
const std::string_view& axis, InputAxisHandler handler)
{
const std::string::size_type slash_pos = binding.find('/');
if (slash_pos == std::string::npos)
{
Log_WarningPrintf("Malformed axis binding: '%s'", binding.c_str());
return;
}

const auto device = std::string_view(binding).substr(0, slash_pos);
const auto axis = std::string_view(binding).substr(slash_pos + 1);
#ifdef WITH_SDL2
if (device == "Controller")
{
const std::optional<int> controller_index = StringUtil::FromChars<int>(device.substr(10));
if (!controller_index || *controller_index < 0)
{
Log_WarningPrintf("Invalid controller index in axis binding '%s'", binding.c_str());
return;
return false;
}

if (axis.find_first_of("Axis") == 0)
Expand All @@ -263,20 +286,19 @@ void CommonHostInterface::AddAxisToInputMap(const std::string& binding, InputAxi
!g_sdl_controller_interface.BindControllerAxis(*controller_index, *axis_index, std::move(handler)))
{
Log_WarningPrintf("Failed to bind controller axis '%s' to axi", binding.c_str());
return;
return false;
}

return true;
}
else
{
Log_WarningPrintf("Malformed controller binding '%s' in button", binding.c_str());
return;
}
}
else
{
Log_WarningPrintf("Unknown input device in axis binding '%s'", binding.c_str());
return;

Log_WarningPrintf("Malformed controller binding '%s' in button", binding.c_str());
return false;
}
#endif

Log_WarningPrintf("Unknown input device in axis binding '%s'", binding.c_str());
return false;
}

void CommonHostInterface::RegisterGeneralHotkeys()
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10 changes: 6 additions & 4 deletions src/frontend-common/common_host_interface.h
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Original file line number Diff line number Diff line change
@@ -1,14 +1,14 @@
#pragma once
#include "core/host_interface.h"
#include "common/string.h"
#include "core/host_interface.h"
#include <atomic>
#include <functional>
#include <map>
#include <memory>
#include <mutex>
#include <optional>
#include <string_view>
#include <utility>
#include <optional>
#include <vector>

class CommonHostInterface : public HostInterface
Expand Down Expand Up @@ -55,8 +55,10 @@ class CommonHostInterface : public HostInterface
void RegisterSaveStateHotkeys();
void UpdateControllerInputMap(SettingsInterface& si);
void UpdateHotkeyInputMap(SettingsInterface& si);
void AddButtonToInputMap(const std::string& binding, InputButtonHandler handler);
void AddAxisToInputMap(const std::string& binding, InputAxisHandler handler);
virtual bool AddButtonToInputMap(const std::string& binding, const std::string_view& device,
const std::string_view& button, InputButtonHandler handler);
virtual bool AddAxisToInputMap(const std::string& binding, const std::string_view& device,
const std::string_view& axis, InputAxisHandler handler);

HotkeyInfoList m_hotkeys;

Expand Down
16 changes: 8 additions & 8 deletions src/frontend-common/frontend-common.vcxproj
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Original file line number Diff line number Diff line change
Expand Up @@ -202,7 +202,7 @@
</PrecompiledHeader>
<WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
Expand All @@ -229,7 +229,7 @@
</PrecompiledHeader>
<WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>_ITERATOR_DEBUG_LEVEL=1;WIN32;_DEBUGFAST;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;_ITERATOR_DEBUG_LEVEL=1;WIN32;_DEBUGFAST;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
Expand Down Expand Up @@ -259,7 +259,7 @@
</PrecompiledHeader>
<WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
Expand All @@ -286,7 +286,7 @@
</PrecompiledHeader>
<WarningLevel>Level3</WarningLevel>
<Optimization>Disabled</Optimization>
<PreprocessorDefinitions>_ITERATOR_DEBUG_LEVEL=1;WIN32;_DEBUGFAST;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;_ITERATOR_DEBUG_LEVEL=1;WIN32;_DEBUGFAST;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
Expand Down Expand Up @@ -318,7 +318,7 @@
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<MultiProcessorCompilation>true</MultiProcessorCompilation>
Expand Down Expand Up @@ -347,7 +347,7 @@
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<OmitFramePointers>true</OmitFramePointers>
Expand Down Expand Up @@ -378,7 +378,7 @@
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<MultiProcessorCompilation>true</MultiProcessorCompilation>
Expand Down Expand Up @@ -407,7 +407,7 @@
<Optimization>MaxSpeed</Optimization>
<FunctionLevelLinking>true</FunctionLevelLinking>
<IntrinsicFunctions>true</IntrinsicFunctions>
<PreprocessorDefinitions>WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<PreprocessorDefinitions>WITH_SDL2=1;WIN32;NDEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
<SDLCheck>true</SDLCheck>
<AdditionalIncludeDirectories>$(SolutionDir)dep\msvc\include\SDL;$(SolutionDir)dep\glad\include;$(SolutionDir)dep\imgui\include;$(SolutionDir)src;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
<OmitFramePointers>true</OmitFramePointers>
Expand Down

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