yuzu-emu
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yuzu
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Massive removal of unused modules

This commit is contained in:
James Rowe 2018-01-11 19:21:20 -07:00
parent 890bbc0cd3
commit ebf9a784a9
179 changed files with 23 additions and 21306 deletions

12
.gitmodules vendored
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@ -4,12 +4,6 @@
[submodule "boost"]
path = externals/boost
url = https://github.com/yuzu-emu/ext-boost.git
[submodule "nihstro"]
path = externals/nihstro
url = https://github.com/neobrain/nihstro.git
[submodule "soundtouch"]
path = externals/soundtouch
url = https://github.com/citra-emu/ext-soundtouch.git
[submodule "catch"]
path = externals/catch
url = https://github.com/philsquared/Catch.git
@ -22,12 +16,6 @@
[submodule "fmt"]
path = externals/fmt
url = https://github.com/fmtlib/fmt.git
[submodule "enet"]
path = externals/enet
url = https://github.com/lsalzman/enet
[submodule "cpr"]
path = externals/cpr
url = https://github.com/whoshuu/cpr.git
[submodule "lz4"]
path = externals/lz4
url = http://github.com/lz4/lz4.git

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@ -4,7 +4,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/CMakeModules")
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/externals/cmake-modules")
include(DownloadExternals)
project(citra)
project(yuzu)
option(ENABLE_SDL2 "Enable the SDL2 frontend" ON)
option(CITRA_USE_BUNDLED_SDL2 "Download bundled SDL2 binaries" OFF)
@ -14,17 +14,6 @@ option(CITRA_USE_BUNDLED_QT "Download bundled Qt binaries" OFF)
option(YUZU_USE_BUNDLED_UNICORN "Download bundled Unicorn binaries" OFF)
option(ENABLE_WEB_SERVICE "Enable web services (telemetry, etc.)" ON)
option(CITRA_USE_BUNDLED_CURL "FOR MINGW ONLY: Download curl configured against winssl instead of openssl" OFF)
if (ENABLE_WEB_SERVICE AND CITRA_USE_BUNDLED_CURL AND WINDOWS AND MSVC)
message("Turning off use bundled curl as msvc can compile curl on cpr")
SET(CITRA_USE_BUNDLED_CURL OFF CACHE BOOL "" FORCE)
endif()
if (ENABLE_WEB_SERVICE AND NOT CITRA_USE_BUNDLED_CURL AND MINGW)
message(AUTHOR_WARNING "Turning on CITRA_USE_BUNDLED_CURL. Override it only if you know what you are doing.")
SET(CITRA_USE_BUNDLED_CURL ON CACHE BOOL "" FORCE)
endif()
if(NOT EXISTS ${CMAKE_SOURCE_DIR}/.git/hooks/pre-commit)
message(STATUS "Copying pre-commit hook")
file(COPY hooks/pre-commit
@ -154,7 +143,6 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Linux")
add_definitions(-D_FILE_OFFSET_BITS=64)
endif()
add_definitions(-DSINGLETHREADED)
# CMake seems to only define _DEBUG on Windows
set_property(DIRECTORY APPEND PROPERTY
COMPILE_DEFINITIONS $<$<CONFIG:Debug>:_DEBUG> $<$<NOT:$<CONFIG:Debug>>:NDEBUG>)
@ -163,11 +151,6 @@ set_property(DIRECTORY APPEND PROPERTY
# System imported libraries
# ======================
find_package(PNG QUIET)
if (NOT PNG_FOUND)
message(STATUS "libpng not found. Some debugging features have been disabled.")
endif()
find_package(Boost 1.63.0 QUIET)
if (NOT Boost_FOUND)
message(STATUS "Boost 1.63.0 or newer not found, falling back to externals")
@ -264,10 +247,6 @@ if (ENABLE_QT)
find_package(Qt5 REQUIRED COMPONENTS Widgets OpenGL ${QT_PREFIX_HINT})
endif()
if (ENABLE_WEB_SERVICE)
add_definitions(-DENABLE_WEB_SERVICE)
endif()
# Platform-specific library requirements
# ======================================

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@ -13,5 +13,5 @@ function(copy_citra_Qt5_deps target_dir)
Qt5OpenGL$<$<CONFIG:Debug>:d>.*
Qt5Widgets$<$<CONFIG:Debug>:d>.*
)
windows_copy_files(citra-qt ${Qt5_PLATFORMS_DIR} ${PLATFORMS} qwindows$<$<CONFIG:Debug>:d>.*)
windows_copy_files(yuzu ${Qt5_PLATFORMS_DIR} ${PLATFORMS} qwindows$<$<CONFIG:Debug>:d>.*)
endfunction(copy_citra_Qt5_deps)

40
dist/citra-qt.6 vendored
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@ -1,40 +0,0 @@
.Dd November 22 2016
.Dt citra-qt 6
.Os
.Sh NAME
.Nm Citra-Qt
.Nd Nintendo 3DS Emulator/Debugger (Qt)
.Sh SYNOPSIS
.Nm citra-qt
.Op Ar file
.Sh DESCRIPTION
Citra is an experimental open-source Nintendo 3DS emulator/debugger.
.Pp
.Nm citra-qt
is the Qt implementation.
.Sh FILES
.Bl -tag -width Ds
.It Pa $XDG_DATA_HOME/citra-emu
Emulator storage.
.It Pa $XDG_CONFIG_HOME/citra-emu
Configuration files.
.El
.Sh AUTHORS
This document is made available to you under the CC-BY license.
.Pp
Citra is made by a team of volunteers. These contributors are listed
at <\fBhttps://github.com/citra-emu/citra/contributors\fR>.
.Pp
.Sh SEE ALSO
.Bl -tag -width Ds
.It Xr citra 6
The SDL frontend of the application
.El
.Pp
Resources are available for this project:
.Bl -tag -width Ds
.It <\fBhttps://citra-emu.org\fR>
The main homepage of the project.
.It <\fBhttps://github.com/citra-emu/citra\fR>
The main source code repository for the Citra emulator.
.Pp

49
dist/citra.6 vendored
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@ -1,49 +0,0 @@
.Dd November 22 2016
.Dt citra 6
.Os
.Sh NAME
.Nm Citra
.Nd Nintendo 3DS Emulator/Debugger (SDL)
.Sh SYNOPSIS
.Nm citra
.Op Ar options
.Op Ar file
.Sh OPTIONS
.Bl -tag -width Ds
.It Fl g Ar port , Fl Fl gdbport Ar port
Starts the GDB stub on the specified port
.It Fl h , Fl Fl help
Shows syntax help and exits
.It Fl v , Fl Fl version
Describes the installed version and exits
.Sh DESCRIPTION
Citra is an experimental open-source Nintendo 3DS emulator/debugger.
.Pp
.Nm citra
is the Simple DirectMedia Layer (SDL) implementation.
.Sh FILES
.Bl -tag -width Ds
.It Pa $XDG_DATA_HOME/citra-emu
Emulator storage.
.It Pa $XDG_CONFIG_HOME/citra-emu
Configuration files.
.El
.Sh AUTHORS
This document is made available to you under the CC-BY license.
.Pp
Citra is made by a team of volunteers. These contributors are listed
at <\fBhttps://github.com/citra-emu/citra/contributors\fR>.
.Pp
.Sh SEE ALSO
.Bl -tag -width Ds
.It Xr citra-qt 6
The Qt frontend of the application
.El
.Pp
Resources are available for this project:
.Bl -tag -width Ds
.It <\fBhttps://citra-emu.org\fR>
The main homepage of the project.
.It <\fBhttps://github.com/citra-emu/citra\fR>
The main source code repository for the Citra emulator.
.Pp

14
dist/citra.desktop vendored
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@ -1,14 +0,0 @@
[Desktop Entry]
Version=1.0
Type=Application
Name=Citra
GenericName=3DS Emulator
GenericName[fr]=Émulateur 3DS
Comment=Nintendo 3DS video game console emulator
Comment[fr]=Émulateur de console de jeu Nintendo 3DS
Icon=citra
TryExec=citra-qt
Exec=citra-qt %f
Categories=Game;Emulator;Qt;
MimeType=application/x-ctr-3dsx;application/x-ctr-cci;application/x-ctr-cia;application/x-ctr-cxi;
Keywords=3DS;Nintendo;

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@ -1,59 +0,0 @@
<?xml version="1.0" encoding="UTF-8"?>
<mime-info xmlns="http://www.freedesktop.org/standards/shared-mime-info">
<mime-type type="application/x-ctr-3dsx">
<comment>Nintendo 3DS homebrew executable</comment>
<comment xml:lang="fr">Exécutable non-officiel pour Nintendo 3DS</comment>
<acronym>3DSX</acronym>
<icon name="citra"/>
<glob pattern="*.3dsx"/>
<magic><match value="3DSX" type="string" offset="0"/></magic>
</mime-type>
<mime-type type="application/x-ctr-cci">
<comment>Nintendo 3DS cartridge image</comment>
<comment xml:lang="fr">Image de cartouche Nintendo 3DS</comment>
<acronym>CCI</acronym>
<expanded-acronym>CTR Cart Image</expanded-acronym>
<icon name="citra"/>
<glob pattern="*.cci"/>
<glob pattern="*.3ds"/>
<magic><match value="NCSD" type="string" offset="256"/></magic>
</mime-type>
<mime-type type="application/x-ctr-cxi">
<comment>Nintendo 3DS executable</comment>
<comment xml:lang="fr">Exécutable Nintendo 3DS</comment>
<acronym>CXI</acronym>
<expanded-acronym>CTR eXecutable Image</expanded-acronym>
<icon name="citra"/>
<glob pattern="*.cxi"/>
<magic><match value="NCCH" type="string" offset="256"/></magic>
</mime-type>
<mime-type type="application/x-ctr-cia">
<comment>Nintendo 3DS importable archive</comment>
<comment xml:lang="fr">Archive installable Nintendo 3DS</comment>
<acronym>CIA</acronym>
<expanded-acronym>CTR Importable Archive</expanded-acronym>
<icon name="citra"/>
<glob pattern="*.cia"/>
</mime-type>
<mime-type type="application/x-ctr-smdh">
<comment>Nintendo 3DS icon and metadata</comment>
<comment xml:lang="fr">Icône et métadonnées Nintendo 3DS</comment>
<acronym>SMDH</acronym>
<expanded-acronym>System Menu Data Header</expanded-acronym>
<glob pattern="*.smdh"/>
<magic><match value="SMDH" type="string" offset="0"/></magic>
</mime-type>
<mime-type type="application/x-ctr-cbmd">
<comment>Nintendo 3DS banner</comment>
<comment xml:lang="fr">Bannière Nintendo 3DS</comment>
<acronym>CBMD</acronym>
<expanded-acronym>CTR Banner Model Data</expanded-acronym>
<glob pattern="*.cbmd"/>
<magic><match value="CBMD" type="string" offset="0"/></magic>
</mime-type>
</mime-info>

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@ -1,6 +0,0 @@
<RCC>
<qresource prefix="icons">
<file>checked.png</file>
<file>failed.png</file>
</qresource>
</RCC>

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@ -1,46 +0,0 @@
<RCC>
<qresource prefix="qss_icons">
<file>rc/up_arrow_disabled.png</file>
<file>rc/Hmovetoolbar.png</file>
<file>rc/stylesheet-branch-end.png</file>
<file>rc/branch_closed-on.png</file>
<file>rc/stylesheet-vline.png</file>
<file>rc/branch_closed.png</file>
<file>rc/branch_open-on.png</file>
<file>rc/transparent.png</file>
<file>rc/right_arrow_disabled.png</file>
<file>rc/sizegrip.png</file>
<file>rc/close.png</file>
<file>rc/close-hover.png</file>
<file>rc/close-pressed.png</file>
<file>rc/down_arrow.png</file>
<file>rc/Vmovetoolbar.png</file>
<file>rc/left_arrow.png</file>
<file>rc/stylesheet-branch-more.png</file>
<file>rc/up_arrow.png</file>
<file>rc/right_arrow.png</file>
<file>rc/left_arrow_disabled.png</file>
<file>rc/Hsepartoolbar.png</file>
<file>rc/branch_open.png</file>
<file>rc/Vsepartoolbar.png</file>
<file>rc/down_arrow_disabled.png</file>
<file>rc/undock.png</file>
<file>rc/checkbox_checked_disabled.png</file>
<file>rc/checkbox_checked_focus.png</file>
<file>rc/checkbox_checked.png</file>
<file>rc/checkbox_indeterminate.png</file>
<file>rc/checkbox_indeterminate_focus.png</file>
<file>rc/checkbox_unchecked_disabled.png</file>
<file>rc/checkbox_unchecked_focus.png</file>
<file>rc/checkbox_unchecked.png</file>
<file>rc/radio_checked_disabled.png</file>
<file>rc/radio_checked_focus.png</file>
<file>rc/radio_checked.png</file>
<file>rc/radio_unchecked_disabled.png</file>
<file>rc/radio_unchecked_focus.png</file>
<file>rc/radio_unchecked.png</file>
</qresource>
<qresource prefix="qdarkstyle">
<file>style.qss</file>
</qresource>
</RCC>

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@ -38,15 +38,6 @@ target_include_directories(lz4_static INTERFACE ./lz4/lib)
add_library(microprofile INTERFACE)
target_include_directories(microprofile INTERFACE ./microprofile)
# Nihstro
add_library(nihstro-headers INTERFACE)
target_include_directories(nihstro-headers INTERFACE ./nihstro/include)
# SoundTouch
add_subdirectory(soundtouch)
# The SoundTouch target doesn't export the necessary include paths as properties by default
target_include_directories(SoundTouch INTERFACE ./soundtouch/include)
# Unicorn
add_library(unicorn-headers INTERFACE)
target_include_directories(unicorn-headers INTERFACE ./unicorn/include)
@ -58,31 +49,3 @@ if (ARCHITECTURE_x86_64)
target_include_directories(xbyak INTERFACE ./xbyak/xbyak)
target_compile_definitions(xbyak INTERFACE XBYAK_NO_OP_NAMES)
endif()
# ENet
add_subdirectory(enet)
target_include_directories(enet INTERFACE ./enet/include)
if (ENABLE_WEB_SERVICE)
# msys installed curl is configured to use openssl, but that isn't portable
# since it relies on having the bundled certs install in the home folder for SSL
# by default on mingw, download the precompiled curl thats linked against windows native ssl
if (MINGW AND CITRA_USE_BUNDLED_CURL)
download_bundled_external("curl/" "curl-7_55_1" CURL_PREFIX)
set(CURL_PREFIX "${CMAKE_BINARY_DIR}/externals/curl-7_55_1")
set(CURL_FOUND YES)
set(CURL_INCLUDE_DIR "${CURL_PREFIX}/include" CACHE PATH "Path to curl headers")
set(CURL_LIBRARY "${CURL_PREFIX}/lib/libcurldll.a" CACHE PATH "Path to curl library")
set(CURL_DLL_DIR "${CURL_PREFIX}/lib/" CACHE PATH "Path to curl.dll")
set(USE_SYSTEM_CURL ON CACHE BOOL "")
endif()
# CPR
set(BUILD_TESTING OFF CACHE BOOL "")
set(BUILD_CPR_TESTS OFF CACHE BOOL "")
add_subdirectory(cpr)
target_include_directories(cpr INTERFACE ./cpr/include)
# JSON
add_library(json-headers INTERFACE)
target_include_directories(json-headers INTERFACE ./json)
endif()

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@ -1,7 +0,0 @@
JSON for Modern C++
===================
This is a mirror providing the single required header file.
The original repository can be found at
https://github.com/nlohmann/json/commit/21d23982cafe826cae088b2bb37cb40c8e7a81fe

14516
externals/json/json.hpp vendored

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@ -4,16 +4,11 @@ include_directories(.)
add_subdirectory(common)
add_subdirectory(core)
add_subdirectory(video_core)
add_subdirectory(audio_core)
add_subdirectory(network)
add_subdirectory(input_common)
add_subdirectory(tests)
if (ENABLE_SDL2)
add_subdirectory(citra)
add_subdirectory(yuzu_cmd)
endif()
if (ENABLE_QT)
add_subdirectory(citra_qt)
endif()
if (ENABLE_WEB_SERVICE)
add_subdirectory(web_service)
add_subdirectory(yuzu)
endif()

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@ -1,44 +0,0 @@
set(SRCS
audio_core.cpp
codec.cpp
hle/dsp.cpp
hle/filter.cpp
hle/mixers.cpp
hle/pipe.cpp
hle/source.cpp
interpolate.cpp
sink_details.cpp
time_stretch.cpp
)
set(HEADERS
audio_core.h
codec.h
hle/common.h
hle/dsp.h
hle/filter.h
hle/mixers.h
hle/pipe.h
hle/source.h
interpolate.h
null_sink.h
sink.h
sink_details.h
time_stretch.h
)
if(SDL2_FOUND)
set(SRCS ${SRCS} sdl2_sink.cpp)
set(HEADERS ${HEADERS} sdl2_sink.h)
endif()
create_directory_groups(${SRCS} ${HEADERS})
add_library(audio_core STATIC ${SRCS} ${HEADERS})
target_link_libraries(audio_core PUBLIC common core)
target_link_libraries(audio_core PRIVATE SoundTouch)
if(SDL2_FOUND)
target_link_libraries(audio_core PRIVATE SDL2)
target_compile_definitions(audio_core PRIVATE HAVE_SDL2)
endif()

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@ -1,61 +0,0 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <memory>
#include <string>
#include "audio_core/audio_core.h"
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/pipe.h"
#include "audio_core/null_sink.h"
#include "audio_core/sink.h"
#include "audio_core/sink_details.h"
#include "common/common_types.h"
#include "core/core_timing.h"
#include "core/hle/service/dsp_dsp.h"
namespace AudioCore {
// Audio Ticks occur about every 5 miliseconds.
static CoreTiming::EventType* tick_event; ///< CoreTiming event
static constexpr u64 audio_frame_ticks = 1310252ull; ///< Units: ARM11 cycles
static void AudioTickCallback(u64 /*userdata*/, int cycles_late) {
if (DSP::HLE::Tick()) {
// TODO(merry): Signal all the other interrupts as appropriate.
Service::DSP_DSP::SignalPipeInterrupt(DSP::HLE::DspPipe::Audio);
// HACK(merry): Added to prevent regressions. Will remove soon.
Service::DSP_DSP::SignalPipeInterrupt(DSP::HLE::DspPipe::Binary);
}
// Reschedule recurrent event
CoreTiming::ScheduleEvent(audio_frame_ticks - cycles_late, tick_event);
}
void Init() {
DSP::HLE::Init();
tick_event = CoreTiming::RegisterEvent("AudioCore::tick_event", AudioTickCallback);
CoreTiming::ScheduleEvent(audio_frame_ticks, tick_event);
}
std::array<u8, Memory::DSP_RAM_SIZE>& GetDspMemory() {
return DSP::HLE::g_dsp_memory.raw_memory;
}
void SelectSink(std::string sink_id) {
const SinkDetails& sink_details = GetSinkDetails(sink_id);
DSP::HLE::SetSink(sink_details.factory());
}
void EnableStretching(bool enable) {
DSP::HLE::EnableStretching(enable);
}
void Shutdown() {
CoreTiming::UnscheduleEvent(tick_event, 0);
DSP::HLE::Shutdown();
}
} // namespace AudioCore

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@ -1,31 +0,0 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <string>
#include "common/common_types.h"
#include "core/memory.h"
namespace AudioCore {
constexpr int native_sample_rate = 32728; ///< 32kHz
/// Initialise Audio Core
void Init();
/// Returns a reference to the array backing DSP memory
std::array<u8, Memory::DSP_RAM_SIZE>& GetDspMemory();
/// Select the sink to use based on sink id.
void SelectSink(std::string sink_id);
/// Enable/Disable stretching.
void EnableStretching(bool enable);
/// Shutdown Audio Core
void Shutdown();
} // namespace AudioCore

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@ -1,127 +0,0 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <cstddef>
#include <cstring>
#include <vector>
#include "audio_core/codec.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "common/math_util.h"
namespace Codec {
StereoBuffer16 DecodeADPCM(const u8* const data, const size_t sample_count,
const std::array<s16, 16>& adpcm_coeff, ADPCMState& state) {
// GC-ADPCM with scale factor and variable coefficients.
// Frames are 8 bytes long containing 14 samples each.
// Samples are 4 bits (one nibble) long.
constexpr size_t FRAME_LEN = 8;
constexpr size_t SAMPLES_PER_FRAME = 14;
constexpr std::array<int, 16> SIGNED_NIBBLES = {
{0, 1, 2, 3, 4, 5, 6, 7, -8, -7, -6, -5, -4, -3, -2, -1}};
const size_t ret_size =
sample_count % 2 == 0 ? sample_count : sample_count + 1; // Ensure multiple of two.
StereoBuffer16 ret(ret_size);
int yn1 = state.yn1, yn2 = state.yn2;
const size_t NUM_FRAMES =
(sample_count + (SAMPLES_PER_FRAME - 1)) / SAMPLES_PER_FRAME; // Round up.
for (size_t framei = 0; framei < NUM_FRAMES; framei++) {
const int frame_header = data[framei * FRAME_LEN];
const int scale = 1 << (frame_header & 0xF);
const int idx = (frame_header >> 4) & 0x7;
// Coefficients are fixed point with 11 bits fractional part.
const int coef1 = adpcm_coeff[idx * 2 + 0];
const int coef2 = adpcm_coeff[idx * 2 + 1];
// Decodes an audio sample. One nibble produces one sample.
const auto decode_sample = [&](const int nibble) -> s16 {
const int xn = nibble * scale;
// We first transform everything into 11 bit fixed point, perform the second order
// digital filter, then transform back.
// 0x400 == 0.5 in 11 bit fixed point.
// Filter: y[n] = x[n] + 0.5 + c1 * y[n-1] + c2 * y[n-2]
int val = ((xn << 11) + 0x400 + coef1 * yn1 + coef2 * yn2) >> 11;
// Clamp to output range.
val = MathUtil::Clamp(val, -32768, 32767);
// Advance output feedback.
yn2 = yn1;
yn1 = val;
return (s16)val;
};
size_t outputi = framei * SAMPLES_PER_FRAME;
size_t datai = framei * FRAME_LEN + 1;
for (size_t i = 0; i < SAMPLES_PER_FRAME && outputi < sample_count; i += 2) {
const s16 sample1 = decode_sample(SIGNED_NIBBLES[data[datai] >> 4]);
ret[outputi].fill(sample1);
outputi++;
const s16 sample2 = decode_sample(SIGNED_NIBBLES[data[datai] & 0xF]);
ret[outputi].fill(sample2);
outputi++;
datai++;
}
}
state.yn1 = yn1;
state.yn2 = yn2;
return ret;
}
static s16 SignExtendS8(u8 x) {
// The data is actually signed PCM8.
// We sign extend this to signed PCM16.
return static_cast<s16>(static_cast<s8>(x));
}
StereoBuffer16 DecodePCM8(const unsigned num_channels, const u8* const data,
const size_t sample_count) {
ASSERT(num_channels == 1 || num_channels == 2);
StereoBuffer16 ret(sample_count);
if (num_channels == 1) {
for (size_t i = 0; i < sample_count; i++) {
ret[i].fill(SignExtendS8(data[i]));
}
} else {
for (size_t i = 0; i < sample_count; i++) {
ret[i][0] = SignExtendS8(data[i * 2 + 0]);
ret[i][1] = SignExtendS8(data[i * 2 + 1]);
}
}
return ret;
}
StereoBuffer16 DecodePCM16(const unsigned num_channels, const u8* const data,
const size_t sample_count) {
ASSERT(num_channels == 1 || num_channels == 2);
StereoBuffer16 ret(sample_count);
if (num_channels == 1) {
for (size_t i = 0; i < sample_count; i++) {
s16 sample;
std::memcpy(&sample, data + i * sizeof(s16), sizeof(s16));
ret[i].fill(sample);
}
} else {
for (size_t i = 0; i < sample_count; ++i) {
std::memcpy(&ret[i], data + i * sizeof(s16) * 2, 2 * sizeof(s16));
}
}
return ret;
}
};

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <deque>
#include "common/common_types.h"
namespace Codec {
/// A variable length buffer of signed PCM16 stereo samples.
using StereoBuffer16 = std::deque<std::array<s16, 2>>;
/// See: Codec::DecodeADPCM
struct ADPCMState {
// Two historical samples from previous processed buffer,
// required for ADPCM decoding
s16 yn1; ///< y[n-1]
s16 yn2; ///< y[n-2]
};
/**
* @param data Pointer to buffer that contains ADPCM data to decode
* @param sample_count Length of buffer in terms of number of samples
* @param adpcm_coeff ADPCM coefficients
* @param state ADPCM state, this is updated with new state
* @return Decoded stereo signed PCM16 data, sample_count in length
*/
StereoBuffer16 DecodeADPCM(const u8* const data, const size_t sample_count,
const std::array<s16, 16>& adpcm_coeff, ADPCMState& state);
/**
* @param num_channels Number of channels
* @param data Pointer to buffer that contains PCM8 data to decode
* @param sample_count Length of buffer in terms of number of samples
* @return Decoded stereo signed PCM16 data, sample_count in length
*/
StereoBuffer16 DecodePCM8(const unsigned num_channels, const u8* const data,
const size_t sample_count);
/**
* @param num_channels Number of channels
* @param data Pointer to buffer that contains PCM16 data to decode
* @param sample_count Length of buffer in terms of number of samples
* @return Decoded stereo signed PCM16 data, sample_count in length
*/
StereoBuffer16 DecodePCM16(const unsigned num_channels, const u8* const data,
const size_t sample_count);
};

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <algorithm>
#include <array>
#include "common/common_types.h"
namespace DSP {
namespace HLE {
constexpr int num_sources = 24;
constexpr int samples_per_frame = 160; ///< Samples per audio frame at native sample rate
/// The final output to the speakers is stereo. Preprocessing output in Source is also stereo.
using StereoFrame16 = std::array<std::array<s16, 2>, samples_per_frame>;
/// The DSP is quadraphonic internally.
using QuadFrame32 = std::array<std::array<s32, 4>, samples_per_frame>;
/**
* This performs the filter operation defined by FilterT::ProcessSample on the frame in-place.
* FilterT::ProcessSample is called sequentially on the samples.
*/
template <typename FrameT, typename FilterT>
void FilterFrame(FrameT& frame, FilterT& filter) {
std::transform(frame.begin(), frame.end(), frame.begin(),
[&filter](const auto& sample) { return filter.ProcessSample(sample); });
}
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <memory>
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/mixers.h"
#include "audio_core/hle/pipe.h"
#include "audio_core/hle/source.h"
#include "audio_core/sink.h"
#include "audio_core/time_stretch.h"
namespace DSP {
namespace HLE {
// Region management
DspMemory g_dsp_memory;
static size_t CurrentRegionIndex() {
// The region with the higher frame counter is chosen unless there is wraparound.
// This function only returns a 0 or 1.
u16 frame_counter_0 = g_dsp_memory.region_0.frame_counter;
u16 frame_counter_1 = g_dsp_memory.region_1.frame_counter;
if (frame_counter_0 == 0xFFFFu && frame_counter_1 != 0xFFFEu) {
// Wraparound has occurred.
return 1;
}
if (frame_counter_1 == 0xFFFFu && frame_counter_0 != 0xFFFEu) {
// Wraparound has occurred.
return 0;
}
return (frame_counter_0 > frame_counter_1) ? 0 : 1;
}
static SharedMemory& ReadRegion() {
return CurrentRegionIndex() == 0 ? g_dsp_memory.region_0 : g_dsp_memory.region_1;
}
static SharedMemory& WriteRegion() {
return CurrentRegionIndex() != 0 ? g_dsp_memory.region_0 : g_dsp_memory.region_1;
}
// Audio processing and mixing
static std::array<Source, num_sources> sources = {
Source(0), Source(1), Source(2), Source(3), Source(4), Source(5), Source(6), Source(7),
Source(8), Source(9), Source(10), Source(11), Source(12), Source(13), Source(14), Source(15),
Source(16), Source(17), Source(18), Source(19), Source(20), Source(21), Source(22), Source(23),
};
static Mixers mixers;
static StereoFrame16 GenerateCurrentFrame() {
SharedMemory& read = ReadRegion();
SharedMemory& write = WriteRegion();
std::array<QuadFrame32, 3> intermediate_mixes = {};
// Generate intermediate mixes
for (size_t i = 0; i < num_sources; i++) {
write.source_statuses.status[i] =
sources[i].Tick(read.source_configurations.config[i], read.adpcm_coefficients.coeff[i]);
for (size_t mix = 0; mix < 3; mix++) {
sources[i].MixInto(intermediate_mixes[mix], mix);
}
}
// Generate final mix
write.dsp_status = mixers.Tick(read.dsp_configuration, read.intermediate_mix_samples,
write.intermediate_mix_samples, intermediate_mixes);
StereoFrame16 output_frame = mixers.GetOutput();
// Write current output frame to the shared memory region
for (size_t samplei = 0; samplei < output_frame.size(); samplei++) {
for (size_t channeli = 0; channeli < output_frame[0].size(); channeli++) {
write.final_samples.pcm16[samplei][channeli] = s16_le(output_frame[samplei][channeli]);
}
}
return output_frame;
}
// Audio output
static bool perform_time_stretching = true;
static std::unique_ptr<AudioCore::Sink> sink;
static AudioCore::TimeStretcher time_stretcher;
static void FlushResidualStretcherAudio() {
time_stretcher.Flush();
while (true) {
std::vector<s16> residual_audio = time_stretcher.Process(sink->SamplesInQueue());
if (residual_audio.empty())
break;
sink->EnqueueSamples(residual_audio.data(), residual_audio.size() / 2);
}
}
static void OutputCurrentFrame(const StereoFrame16& frame) {
if (perform_time_stretching) {
time_stretcher.AddSamples(&frame[0][0], frame.size());
std::vector<s16> stretched_samples = time_stretcher.Process(sink->SamplesInQueue());
sink->EnqueueSamples(stretched_samples.data(), stretched_samples.size() / 2);
} else {
constexpr size_t maximum_sample_latency = 2048; // about 64 miliseconds
if (sink->SamplesInQueue() > maximum_sample_latency) {
// This can occur if we're running too fast and samples are starting to back up.
// Just drop the samples.
return;
}
sink->EnqueueSamples(&frame[0][0], frame.size());
}
}
void EnableStretching(bool enable) {
if (perform_time_stretching == enable)
return;
if (!enable) {
FlushResidualStretcherAudio();
}
perform_time_stretching = enable;
}
// Public Interface
void Init() {
DSP::HLE::ResetPipes();
for (auto& source : sources) {
source.Reset();
}
mixers.Reset();
time_stretcher.Reset();
if (sink) {
time_stretcher.SetOutputSampleRate(sink->GetNativeSampleRate());
}
}
void Shutdown() {
if (perform_time_stretching) {
FlushResidualStretcherAudio();
}
}
bool Tick() {
StereoFrame16 current_frame = {};
// TODO: Check dsp::DSP semaphore (which indicates emulated application has finished writing to
// shared memory region)
current_frame = GenerateCurrentFrame();
OutputCurrentFrame(current_frame);
return true;
}
void SetSink(std::unique_ptr<AudioCore::Sink> sink_) {
sink = std::move(sink_);
time_stretcher.SetOutputSampleRate(sink->GetNativeSampleRate());
}
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <cstddef>
#include <memory>
#include <type_traits>
#include "audio_core/hle/common.h"
#include "common/bit_field.h"
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/swap.h"
namespace AudioCore {
class Sink;
}
namespace DSP {
namespace HLE {
// The application-accessible region of DSP memory consists of two parts. Both are marked as IO and
// have Read/Write permissions.
//
// First Region: 0x1FF50000 (Size: 0x8000)
// Second Region: 0x1FF70000 (Size: 0x8000)
//
// The DSP reads from each region alternately based on the frame counter for each region much like a
// double-buffer. The frame counter is located as the very last u16 of each region and is
// incremented each audio tick.
constexpr u32 region0_offset = 0x50000;
constexpr u32 region1_offset = 0x70000;
/**
* The DSP is native 16-bit. The DSP also appears to be big-endian. When reading 32-bit numbers from
* its memory regions, the higher and lower 16-bit halves are swapped compared to the little-endian
* layout of the ARM11. Hence from the ARM11's point of view the memory space appears to be
* middle-endian.
*
* Unusually this does not appear to be an issue for floating point numbers. The DSP makes the more
* sensible choice of keeping that little-endian. There are also some exceptions such as the
* IntermediateMixSamples structure, which is little-endian.
*
* This struct implements the conversion to and from this middle-endianness.
*/
struct u32_dsp {
u32_dsp() = default;
operator u32() const {
return Convert(storage);
}
void operator=(u32 new_value) {
storage = Convert(new_value);
}
private:
static constexpr u32 Convert(u32 value) {
return (value << 16) | (value >> 16);
}
u32_le storage;
};
#if (__GNUC__ >= 5) || defined(__clang__) || defined(_MSC_VER)
static_assert(std::is_trivially_copyable<u32_dsp>::value, "u32_dsp isn't trivially copyable");
#endif
// There are 15 structures in each memory region. A table of them in the order they appear in memory
// is presented below:
//
// # First Region DSP Address Purpose Control
// 5 0x8400 DSP Status DSP
// 9 0x8410 DSP Debug Info DSP
// 6 0x8540 Final Mix Samples DSP
// 2 0x8680 Source Status [24] DSP
// 8 0x8710 Compressor Table Application
// 4 0x9430 DSP Configuration Application
// 7 0x9492 Intermediate Mix Samples DSP + App
// 1 0x9E92 Source Configuration [24] Application
// 3 0xA792 Source ADPCM Coefficients [24] Application
// 10 0xA912 Surround Sound Related
// 11 0xAA12 Surround Sound Related
// 12 0xAAD2 Surround Sound Related
// 13 0xAC52 Surround Sound Related
// 14 0xAC5C Surround Sound Related
// 0 0xBFFF Frame Counter Application
//
// #: This refers to the order in which they appear in the DspPipe::Audio DSP pipe.
// See also: DSP::HLE::PipeRead.
//
// Note that the above addresses do vary slightly between audio firmwares observed; the addresses
// are not fixed in stone. The addresses above are only an examplar; they're what this
// implementation does and provides to applications.
//
// Application requests the DSP service to convert DSP addresses into ARM11 virtual addresses using
// the ConvertProcessAddressFromDspDram service call. Applications seem to derive the addresses for
// the second region via:
// second_region_dsp_addr = first_region_dsp_addr | 0x10000
//
// Applications maintain most of its own audio state, the memory region is used mainly for
// communication and not storage of state.
//
// In the documentation below, filter and effect transfer functions are specified in the z domain.
// (If you are more familiar with the Laplace transform, z = exp(sT). The z domain is the digital
// frequency domain, just like how the s domain is the analog frequency domain.)
#define INSERT_PADDING_DSPWORDS(num_words) INSERT_PADDING_BYTES(2 * (num_words))
// GCC versions < 5.0 do not implement std::is_trivially_copyable.
// Excluding MSVC because it has weird behaviour for std::is_trivially_copyable.
#if (__GNUC__ >= 5) || defined(__clang__)
#define ASSERT_DSP_STRUCT(name, size) \
static_assert(std::is_standard_layout<name>::value, \
"DSP structure " #name " doesn't use standard layout"); \
static_assert(std::is_trivially_copyable<name>::value, \
"DSP structure " #name " isn't trivially copyable"); \
static_assert(sizeof(name) == (size), "Unexpected struct size for DSP structure " #name)
#else
#define ASSERT_DSP_STRUCT(name, size) \
static_assert(std::is_standard_layout<name>::value, \
"DSP structure " #name " doesn't use standard layout"); \
static_assert(sizeof(name) == (size), "Unexpected struct size for DSP structure " #name)
#endif
struct SourceConfiguration {
struct Configuration {
/// These dirty flags are set by the application when it updates the fields in this struct.
/// The DSP clears these each audio frame.
union {
u32_le dirty_raw;
BitField<0, 1, u32_le> format_dirty;
BitField<1, 1, u32_le> mono_or_stereo_dirty;
BitField<2, 1, u32_le> adpcm_coefficients_dirty;
/// Tends to be set when a looped buffer is queued.
BitField<3, 1, u32_le> partial_embedded_buffer_dirty;
BitField<4, 1, u32_le> partial_reset_flag;
BitField<16, 1, u32_le> enable_dirty;
BitField<17, 1, u32_le> interpolation_dirty;
BitField<18, 1, u32_le> rate_multiplier_dirty;
BitField<19, 1, u32_le> buffer_queue_dirty;
BitField<20, 1, u32_le> loop_related_dirty;
/// Tends to also be set when embedded buffer is updated.
BitField<21, 1, u32_le> play_position_dirty;
BitField<22, 1, u32_le> filters_enabled_dirty;
BitField<23, 1, u32_le> simple_filter_dirty;
BitField<24, 1, u32_le> biquad_filter_dirty;
BitField<25, 1, u32_le> gain_0_dirty;
BitField<26, 1, u32_le> gain_1_dirty;
BitField<27, 1, u32_le> gain_2_dirty;
BitField<28, 1, u32_le> sync_dirty;
BitField<29, 1, u32_le> reset_flag;
BitField<30, 1, u32_le> embedded_buffer_dirty;
};
// Gain control
/**
* Gain is between 0.0-1.0. This determines how much will this source appear on each of the
* 12 channels that feed into the intermediate mixers. Each of the three intermediate mixers
* is fed two left and two right channels.
*/
float_le gain[3][4];
// Interpolation
/// Multiplier for sample rate. Resampling occurs with the selected interpolation method.
float_le rate_multiplier;
enum class InterpolationMode : u8 {
Polyphase = 0,
Linear = 1,
None = 2,
};
InterpolationMode interpolation_mode;
INSERT_PADDING_BYTES(1); ///< Interpolation related
// Filters
/**
* This is the simplest normalized first-order digital recursive filter.
* The transfer function of this filter is:
* H(z) = b0 / (1 - a1 z^-1)
* Note the feedbackward coefficient is negated.
* Values are signed fixed point with 15 fractional bits.
*/
struct SimpleFilter {
s16_le b0;
s16_le a1;
};
/**
* This is a normalised biquad filter (second-order).
* The transfer function of this filter is:
* H(z) = (b0 + b1 z^-1 + b2 z^-2) / (1 - a1 z^-1 - a2 z^-2)
* Nintendo chose to negate the feedbackward coefficients. This differs from standard
* notation as in: https://ccrma.stanford.edu/~jos/filters/Direct_Form_I.html
* Values are signed fixed point with 14 fractional bits.
*/
struct BiquadFilter {
s16_le a2;
s16_le a1;
s16_le b2;
s16_le b1;
s16_le b0;
};
union {
u16_le filters_enabled;
BitField<0, 1, u16_le> simple_filter_enabled;
BitField<1, 1, u16_le> biquad_filter_enabled;
};
SimpleFilter simple_filter;
BiquadFilter biquad_filter;
// Buffer Queue
/// A buffer of audio data from the application, along with metadata about it.
struct Buffer {
/// Physical memory address of the start of the buffer
u32_dsp physical_address;
/// This is length in terms of samples.
/// Note that in different buffer formats a sample takes up different number of bytes.
u32_dsp length;
/// ADPCM Predictor (4 bits) and Scale (4 bits)
union {
u16_le adpcm_ps;
BitField<0, 4, u16_le> adpcm_scale;
BitField<4, 4, u16_le> adpcm_predictor;
};
/// ADPCM Historical Samples (y[n-1] and y[n-2])
u16_le adpcm_yn[2];
/// This is non-zero when the ADPCM values above are to be updated.
u8 adpcm_dirty;
/// Is a looping buffer.
u8 is_looping;
/// This value is shown in SourceStatus::previous_buffer_id when this buffer has
/// finished. This allows the emulated application to tell what buffer is currently
/// playing.
u16_le buffer_id;
INSERT_PADDING_DSPWORDS(1);
};
u16_le buffers_dirty; ///< Bitmap indicating which buffers are dirty (bit i -> buffers[i])
Buffer buffers[4]; ///< Queued Buffers
// Playback controls
u32_dsp loop_related;
u8 enable;
INSERT_PADDING_BYTES(1);
u16_le sync; ///< Application-side sync (See also: SourceStatus::sync)
u32_dsp play_position; ///< Position. (Units: number of samples)
INSERT_PADDING_DSPWORDS(2);
// Embedded Buffer
// This buffer is often the first buffer to be used when initiating audio playback,
// after which the buffer queue is used.
u32_dsp physical_address;
/// This is length in terms of samples.
/// Note a sample takes up different number of bytes in different buffer formats.
u32_dsp length;
enum class MonoOrStereo : u16_le {
Mono = 1,
Stereo = 2,
};
enum class Format : u16_le {
PCM8 = 0,
PCM16 = 1,
ADPCM = 2,
};
union {
u16_le flags1_raw;
BitField<0, 2, MonoOrStereo> mono_or_stereo;
BitField<2, 2, Format> format;
BitField<5, 1, u16_le> fade_in;
};
/// ADPCM Predictor (4 bit) and Scale (4 bit)
union {
u16_le adpcm_ps;
BitField<0, 4, u16_le> adpcm_scale;
BitField<4, 4, u16_le> adpcm_predictor;
};
/// ADPCM Historical Samples (y[n-1] and y[n-2])
u16_le adpcm_yn[2];
union {
u16_le flags2_raw;
BitField<0, 1, u16_le> adpcm_dirty; ///< Has the ADPCM info above been changed?
BitField<1, 1, u16_le> is_looping; ///< Is this a looping buffer?
};
/// Buffer id of embedded buffer (used as a buffer id in SourceStatus to reference this
/// buffer).
u16_le buffer_id;
};
Configuration config[num_sources];
};
ASSERT_DSP_STRUCT(SourceConfiguration::Configuration, 192);
ASSERT_DSP_STRUCT(SourceConfiguration::Configuration::Buffer, 20);
struct SourceStatus {
struct Status {
u8 is_enabled; ///< Is this channel enabled? (Doesn't have to be playing anything.)
u8 current_buffer_id_dirty; ///< Non-zero when current_buffer_id changes
u16_le sync; ///< Is set by the DSP to the value of SourceConfiguration::sync
u32_dsp buffer_position; ///< Number of samples into the current buffer
u16_le current_buffer_id; ///< Updated when a buffer finishes playing
INSERT_PADDING_DSPWORDS(1);
};
Status status[num_sources];
};
ASSERT_DSP_STRUCT(SourceStatus::Status, 12);
struct DspConfiguration {
/// These dirty flags are set by the application when it updates the fields in this struct.
/// The DSP clears these each audio frame.
union {
u32_le dirty_raw;
BitField<8, 1, u32_le> mixer1_enabled_dirty;
BitField<9, 1, u32_le> mixer2_enabled_dirty;
BitField<10, 1, u32_le> delay_effect_0_dirty;
BitField<11, 1, u32_le> delay_effect_1_dirty;
BitField<12, 1, u32_le> reverb_effect_0_dirty;
BitField<13, 1, u32_le> reverb_effect_1_dirty;
BitField<16, 1, u32_le> volume_0_dirty;
BitField<24, 1, u32_le> volume_1_dirty;
BitField<25, 1, u32_le> volume_2_dirty;
BitField<26, 1, u32_le> output_format_dirty;
BitField<27, 1, u32_le> limiter_enabled_dirty;
BitField<28, 1, u32_le> headphones_connected_dirty;
};
/// The DSP has three intermediate audio mixers. This controls the volume level (0.0-1.0) for
/// each at the final mixer.
float_le volume[3];
INSERT_PADDING_DSPWORDS(3);
enum class OutputFormat : u16_le {
Mono = 0,
Stereo = 1,
Surround = 2,
};
OutputFormat output_format;
u16_le limiter_enabled; ///< Not sure of the exact gain equation for the limiter.
u16_le headphones_connected; ///< Application updates the DSP on headphone status.
INSERT_PADDING_DSPWORDS(4); ///< TODO: Surround sound related
INSERT_PADDING_DSPWORDS(2); ///< TODO: Intermediate mixer 1/2 related
u16_le mixer1_enabled;
u16_le mixer2_enabled;
/**
* This is delay with feedback.
* Transfer function:
* H(z) = a z^-N / (1 - b z^-1 + a g z^-N)
* where
* N = frame_count * samples_per_frame
* g, a and b are fixed point with 7 fractional bits
*/
struct DelayEffect {
/// These dirty flags are set by the application when it updates the fields in this struct.
/// The DSP clears these each audio frame.
union {
u16_le dirty_raw;
BitField<0, 1, u16_le> enable_dirty;
BitField<1, 1, u16_le> work_buffer_address_dirty;
BitField<2, 1, u16_le> other_dirty; ///< Set when anything else has been changed
};
u16_le enable;
INSERT_PADDING_DSPWORDS(1);
u16_le outputs;
/// The application allocates a block of memory for the DSP to use as a work buffer.
u32_dsp work_buffer_address;
/// Frames to delay by
u16_le frame_count;
// Coefficients
s16_le g; ///< Fixed point with 7 fractional bits
s16_le a; ///< Fixed point with 7 fractional bits
s16_le b; ///< Fixed point with 7 fractional bits
};
DelayEffect delay_effect[2];
struct ReverbEffect {
INSERT_PADDING_DSPWORDS(26); ///< TODO
};
ReverbEffect reverb_effect[2];
INSERT_PADDING_DSPWORDS(4);
};
ASSERT_DSP_STRUCT(DspConfiguration, 196);
ASSERT_DSP_STRUCT(DspConfiguration::DelayEffect, 20);
ASSERT_DSP_STRUCT(DspConfiguration::ReverbEffect, 52);
struct AdpcmCoefficients {
/// Coefficients are signed fixed point with 11 fractional bits.
/// Each source has 16 coefficients associated with it.
s16_le coeff[num_sources][16];
};
ASSERT_DSP_STRUCT(AdpcmCoefficients, 768);
struct DspStatus {
u16_le unknown;
u16_le dropped_frames;
INSERT_PADDING_DSPWORDS(0xE);
};
ASSERT_DSP_STRUCT(DspStatus, 32);
/// Final mixed output in PCM16 stereo format, what you hear out of the speakers.
/// When the application writes to this region it has no effect.
struct FinalMixSamples {
s16_le pcm16[samples_per_frame][2];
};
ASSERT_DSP_STRUCT(FinalMixSamples, 640);
/// DSP writes output of intermediate mixers 1 and 2 here.
/// Writes to this region by the application edits the output of the intermediate mixers.
/// This seems to be intended to allow the application to do custom effects on the ARM11.
/// Values that exceed s16 range will be clipped by the DSP after further processing.
struct IntermediateMixSamples {
struct Samples {
s32_le pcm32[4][samples_per_frame]; ///< Little-endian as opposed to DSP middle-endian.
};
Samples mix1;
Samples mix2;
};
ASSERT_DSP_STRUCT(IntermediateMixSamples, 5120);
/// Compressor table
struct Compressor {
INSERT_PADDING_DSPWORDS(0xD20); ///< TODO
};
/// There is no easy way to implement this in a HLE implementation.
struct DspDebug {
INSERT_PADDING_DSPWORDS(0x130);
};
ASSERT_DSP_STRUCT(DspDebug, 0x260);
struct SharedMemory {
/// Padding
INSERT_PADDING_DSPWORDS(0x400);
DspStatus dsp_status;
DspDebug dsp_debug;
FinalMixSamples final_samples;
SourceStatus source_statuses;
Compressor compressor;
DspConfiguration dsp_configuration;
IntermediateMixSamples intermediate_mix_samples;
SourceConfiguration source_configurations;
AdpcmCoefficients adpcm_coefficients;
struct {
INSERT_PADDING_DSPWORDS(0x100);
} unknown10;
struct {
INSERT_PADDING_DSPWORDS(0xC0);
} unknown11;
struct {
INSERT_PADDING_DSPWORDS(0x180);
} unknown12;
struct {
INSERT_PADDING_DSPWORDS(0xA);
} unknown13;
struct {
INSERT_PADDING_DSPWORDS(0x13A3);
} unknown14;
u16_le frame_counter;
};
ASSERT_DSP_STRUCT(SharedMemory, 0x8000);
union DspMemory {
std::array<u8, 0x80000> raw_memory;
struct {
u8 unused_0[0x50000];
SharedMemory region_0;
u8 unused_1[0x18000];
SharedMemory region_1;
u8 unused_2[0x8000];
};
};
static_assert(offsetof(DspMemory, region_0) == region0_offset,
"DSP region 0 is at the wrong offset");
static_assert(offsetof(DspMemory, region_1) == region1_offset,
"DSP region 1 is at the wrong offset");
extern DspMemory g_dsp_memory;
// Structures must have an offset that is a multiple of two.
static_assert(offsetof(SharedMemory, frame_counter) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, source_configurations) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, source_statuses) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, adpcm_coefficients) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, dsp_configuration) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, dsp_status) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, final_samples) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, intermediate_mix_samples) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, compressor) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, dsp_debug) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, unknown10) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, unknown11) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, unknown12) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, unknown13) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
static_assert(offsetof(SharedMemory, unknown14) % 2 == 0,
"Structures in DSP::HLE::SharedMemory must be 2-byte aligned");
#undef INSERT_PADDING_DSPWORDS
#undef ASSERT_DSP_STRUCT
/// Initialize DSP hardware
void Init();
/// Shutdown DSP hardware
void Shutdown();
/**
* Perform processing and updates state of current shared memory buffer.
* This function is called every audio tick before triggering the audio interrupt.
* @return Whether an audio interrupt should be triggered this frame.
*/
bool Tick();
/**
* Set the output sink. This must be called before calling Tick().
* @param sink The sink to which audio will be output to.
*/
void SetSink(std::unique_ptr<AudioCore::Sink> sink);
/**
* Enables/Disables audio-stretching.
* Audio stretching is an enhancement that stretches audio to match emulation
* speed to prevent stuttering at the cost of some audio latency.
* @param enable true to enable, false to disable.
*/
void EnableStretching(bool enable);
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <cstddef>
#include "audio_core/hle/common.h"
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/filter.h"
#include "common/common_types.h"
#include "common/math_util.h"
namespace DSP {
namespace HLE {
void SourceFilters::Reset() {
Enable(false, false);
}
void SourceFilters::Enable(bool simple, bool biquad) {
simple_filter_enabled = simple;
biquad_filter_enabled = biquad;
if (!simple)
simple_filter.Reset();
if (!biquad)
biquad_filter.Reset();
}
void SourceFilters::Configure(SourceConfiguration::Configuration::SimpleFilter config) {
simple_filter.Configure(config);
}
void SourceFilters::Configure(SourceConfiguration::Configuration::BiquadFilter config) {
biquad_filter.Configure(config);
}
void SourceFilters::ProcessFrame(StereoFrame16& frame) {
if (!simple_filter_enabled && !biquad_filter_enabled)
return;
if (simple_filter_enabled) {
FilterFrame(frame, simple_filter);
}
if (biquad_filter_enabled) {
FilterFrame(frame, biquad_filter);
}
}
// SimpleFilter
void SourceFilters::SimpleFilter::Reset() {
y1.fill(0);
// Configure as passthrough.
a1 = 0;
b0 = 1 << 15;
}
void SourceFilters::SimpleFilter::Configure(
SourceConfiguration::Configuration::SimpleFilter config) {
a1 = config.a1;
b0 = config.b0;
}
std::array<s16, 2> SourceFilters::SimpleFilter::ProcessSample(const std::array<s16, 2>& x0) {
std::array<s16, 2> y0;
for (size_t i = 0; i < 2; i++) {
const s32 tmp = (b0 * x0[i] + a1 * y1[i]) >> 15;
y0[i] = MathUtil::Clamp(tmp, -32768, 32767);
}
y1 = y0;
return y0;
}
// BiquadFilter
void SourceFilters::BiquadFilter::Reset() {
x1.fill(0);
x2.fill(0);
y1.fill(0);
y2.fill(0);
// Configure as passthrough.
a1 = a2 = b1 = b2 = 0;
b0 = 1 << 14;
}
void SourceFilters::BiquadFilter::Configure(
SourceConfiguration::Configuration::BiquadFilter config) {
a1 = config.a1;
a2 = config.a2;
b0 = config.b0;
b1 = config.b1;
b2 = config.b2;
}
std::array<s16, 2> SourceFilters::BiquadFilter::ProcessSample(const std::array<s16, 2>& x0) {
std::array<s16, 2> y0;
for (size_t i = 0; i < 2; i++) {
const s32 tmp = (b0 * x0[i] + b1 * x1[i] + b2 * x2[i] + a1 * y1[i] + a2 * y2[i]) >> 14;
y0[i] = MathUtil::Clamp(tmp, -32768, 32767);
}
x2 = x1;
x1 = x0;
y2 = y1;
y1 = y0;
return y0;
}
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "audio_core/hle/common.h"
#include "audio_core/hle/dsp.h"
#include "common/common_types.h"
namespace DSP {
namespace HLE {
/// Preprocessing filters. There is an independent set of filters for each Source.
class SourceFilters final {
public:
SourceFilters() {
Reset();
}
/// Reset internal state.
void Reset();
/**
* Enable/Disable filters
* See also: SourceConfiguration::Configuration::simple_filter_enabled,
* SourceConfiguration::Configuration::biquad_filter_enabled.
* @param simple If true, enables the simple filter. If false, disables it.
* @param biquad If true, enables the biquad filter. If false, disables it.
*/
void Enable(bool simple, bool biquad);
/**
* Configure simple filter.
* @param config Configuration from DSP shared memory.
*/
void Configure(SourceConfiguration::Configuration::SimpleFilter config);
/**
* Configure biquad filter.
* @param config Configuration from DSP shared memory.
*/
void Configure(SourceConfiguration::Configuration::BiquadFilter config);
/**
* Processes a frame in-place.
* @param frame Audio samples to process. Modified in-place.
*/
void ProcessFrame(StereoFrame16& frame);
private:
bool simple_filter_enabled;
bool biquad_filter_enabled;
struct SimpleFilter {
SimpleFilter() {
Reset();
}
/// Resets internal state.
void Reset();
/**
* Configures this filter with application settings.
* @param config Configuration from DSP shared memory.
*/
void Configure(SourceConfiguration::Configuration::SimpleFilter config);
/**
* Processes a single stereo PCM16 sample.
* @param x0 Input sample
* @return Output sample
*/
std::array<s16, 2> ProcessSample(const std::array<s16, 2>& x0);
private:
// Configuration
s32 a1, b0;
// Internal state
std::array<s16, 2> y1;
} simple_filter;
struct BiquadFilter {
BiquadFilter() {
Reset();
}
/// Resets internal state.
void Reset();
/**
* Configures this filter with application settings.
* @param config Configuration from DSP shared memory.
*/
void Configure(SourceConfiguration::Configuration::BiquadFilter config);
/**
* Processes a single stereo PCM16 sample.
* @param x0 Input sample
* @return Output sample
*/
std::array<s16, 2> ProcessSample(const std::array<s16, 2>& x0);
private:
// Configuration
s32 a1, a2, b0, b1, b2;
// Internal state
std::array<s16, 2> x1;
std::array<s16, 2> x2;
std::array<s16, 2> y1;
std::array<s16, 2> y2;
} biquad_filter;
};
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <cstddef>
#include "audio_core/hle/common.h"
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/mixers.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/math_util.h"
namespace DSP {
namespace HLE {
void Mixers::Reset() {
current_frame.fill({});
state = {};
}
DspStatus Mixers::Tick(DspConfiguration& config, const IntermediateMixSamples& read_samples,
IntermediateMixSamples& write_samples,
const std::array<QuadFrame32, 3>& input) {
ParseConfig(config);
AuxReturn(read_samples);
AuxSend(write_samples, input);
MixCurrentFrame();
return GetCurrentStatus();
}
void Mixers::ParseConfig(DspConfiguration& config) {
if (!config.dirty_raw) {
return;
}
if (config.mixer1_enabled_dirty) {
config.mixer1_enabled_dirty.Assign(0);
state.mixer1_enabled = config.mixer1_enabled != 0;
LOG_TRACE(Audio_DSP, "mixers mixer1_enabled = %hu", config.mixer1_enabled);
}
if (config.mixer2_enabled_dirty) {
config.mixer2_enabled_dirty.Assign(0);
state.mixer2_enabled = config.mixer2_enabled != 0;
LOG_TRACE(Audio_DSP, "mixers mixer2_enabled = %hu", config.mixer2_enabled);
}
if (config.volume_0_dirty) {
config.volume_0_dirty.Assign(0);
state.intermediate_mixer_volume[0] = config.volume[0];
LOG_TRACE(Audio_DSP, "mixers volume[0] = %f", config.volume[0]);
}
if (config.volume_1_dirty) {
config.volume_1_dirty.Assign(0);
state.intermediate_mixer_volume[1] = config.volume[1];
LOG_TRACE(Audio_DSP, "mixers volume[1] = %f", config.volume[1]);
}
if (config.volume_2_dirty) {
config.volume_2_dirty.Assign(0);
state.intermediate_mixer_volume[2] = config.volume[2];
LOG_TRACE(Audio_DSP, "mixers volume[2] = %f", config.volume[2]);
}
if (config.output_format_dirty) {
config.output_format_dirty.Assign(0);
state.output_format = config.output_format;
LOG_TRACE(Audio_DSP, "mixers output_format = %zu",
static_cast<size_t>(config.output_format));
}
if (config.headphones_connected_dirty) {
config.headphones_connected_dirty.Assign(0);
// Do nothing. (Note: Whether headphones are connected does affect coefficients used for
// surround sound.)
LOG_TRACE(Audio_DSP, "mixers headphones_connected=%hu", config.headphones_connected);
}
if (config.dirty_raw) {
LOG_DEBUG(Audio_DSP, "mixers remaining_dirty=%x", config.dirty_raw);
}
config.dirty_raw = 0;
}
static s16 ClampToS16(s32 value) {
return static_cast<s16>(MathUtil::Clamp(value, -32768, 32767));
}
static std::array<s16, 2> AddAndClampToS16(const std::array<s16, 2>& a,
const std::array<s16, 2>& b) {
return {ClampToS16(static_cast<s32>(a[0]) + static_cast<s32>(b[0])),
ClampToS16(static_cast<s32>(a[1]) + static_cast<s32>(b[1]))};
}
void Mixers::DownmixAndMixIntoCurrentFrame(float gain, const QuadFrame32& samples) {
// TODO(merry): Limiter. (Currently we're performing final mixing assuming a disabled limiter.)
switch (state.output_format) {
case OutputFormat::Mono:
std::transform(
current_frame.begin(), current_frame.end(), samples.begin(), current_frame.begin(),
[gain](const std::array<s16, 2>& accumulator,
const std::array<s32, 4>& sample) -> std::array<s16, 2> {
// Downmix to mono
s16 mono = ClampToS16(static_cast<s32>(
(gain * sample[0] + gain * sample[1] + gain * sample[2] + gain * sample[3]) /
2));
// Mix into current frame
return AddAndClampToS16(accumulator, {mono, mono});
});
return;
case OutputFormat::Surround:
// TODO(merry): Implement surround sound.
// fallthrough
case OutputFormat::Stereo:
std::transform(
current_frame.begin(), current_frame.end(), samples.begin(), current_frame.begin(),
[gain](const std::array<s16, 2>& accumulator,
const std::array<s32, 4>& sample) -> std::array<s16, 2> {
// Downmix to stereo
s16 left = ClampToS16(static_cast<s32>(gain * sample[0] + gain * sample[2]));
s16 right = ClampToS16(static_cast<s32>(gain * sample[1] + gain * sample[3]));
// Mix into current frame
return AddAndClampToS16(accumulator, {left, right});
});
return;
}
UNREACHABLE_MSG("Invalid output_format %zu", static_cast<size_t>(state.output_format));
}
void Mixers::AuxReturn(const IntermediateMixSamples& read_samples) {
// NOTE: read_samples.mix{1,2}.pcm32 annoyingly have their dimensions in reverse order to
// QuadFrame32.
if (state.mixer1_enabled) {
for (size_t sample = 0; sample < samples_per_frame; sample++) {
for (size_t channel = 0; channel < 4; channel++) {
state.intermediate_mix_buffer[1][sample][channel] =
read_samples.mix1.pcm32[channel][sample];
}
}
}
if (state.mixer2_enabled) {
for (size_t sample = 0; sample < samples_per_frame; sample++) {
for (size_t channel = 0; channel < 4; channel++) {
state.intermediate_mix_buffer[2][sample][channel] =
read_samples.mix2.pcm32[channel][sample];
}
}
}
}
void Mixers::AuxSend(IntermediateMixSamples& write_samples,
const std::array<QuadFrame32, 3>& input) {
// NOTE: read_samples.mix{1,2}.pcm32 annoyingly have their dimensions in reverse order to
// QuadFrame32.
state.intermediate_mix_buffer[0] = input[0];
if (state.mixer1_enabled) {
for (size_t sample = 0; sample < samples_per_frame; sample++) {
for (size_t channel = 0; channel < 4; channel++) {
write_samples.mix1.pcm32[channel][sample] = input[1][sample][channel];
}
}
} else {
state.intermediate_mix_buffer[1] = input[1];
}
if (state.mixer2_enabled) {
for (size_t sample = 0; sample < samples_per_frame; sample++) {
for (size_t channel = 0; channel < 4; channel++) {
write_samples.mix2.pcm32[channel][sample] = input[2][sample][channel];
}
}
} else {
state.intermediate_mix_buffer[2] = input[2];
}
}
void Mixers::MixCurrentFrame() {
current_frame.fill({});
for (size_t mix = 0; mix < 3; mix++) {
DownmixAndMixIntoCurrentFrame(state.intermediate_mixer_volume[mix],
state.intermediate_mix_buffer[mix]);
}
// TODO(merry): Compressor. (We currently assume a disabled compressor.)
}
DspStatus Mixers::GetCurrentStatus() const {
DspStatus status;
status.unknown = 0;
status.dropped_frames = 0;
return status;
}
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include "audio_core/hle/common.h"
#include "audio_core/hle/dsp.h"
namespace DSP {
namespace HLE {
class Mixers final {
public:
Mixers() {
Reset();
}
void Reset();
DspStatus Tick(DspConfiguration& config, const IntermediateMixSamples& read_samples,
IntermediateMixSamples& write_samples, const std::array<QuadFrame32, 3>& input);
StereoFrame16 GetOutput() const {
return current_frame;
}
private:
StereoFrame16 current_frame = {};
using OutputFormat = DspConfiguration::OutputFormat;
struct {
std::array<float, 3> intermediate_mixer_volume = {};
bool mixer1_enabled = false;
bool mixer2_enabled = false;
std::array<QuadFrame32, 3> intermediate_mix_buffer = {};
OutputFormat output_format = OutputFormat::Stereo;
} state;
/// INTERNAL: Update our internal state based on the current config.
void ParseConfig(DspConfiguration& config);
/// INTERNAL: Read samples from shared memory that have been modified by the ARM11.
void AuxReturn(const IntermediateMixSamples& read_samples);
/// INTERNAL: Write samples to shared memory for the ARM11 to modify.
void AuxSend(IntermediateMixSamples& write_samples, const std::array<QuadFrame32, 3>& input);
/// INTERNAL: Mix current_frame.
void MixCurrentFrame();
/// INTERNAL: Downmix from quadraphonic to stereo based on status.output_format and accumulate
/// into current_frame.
void DownmixAndMixIntoCurrentFrame(float gain, const QuadFrame32& samples);
/// INTERNAL: Generate DspStatus based on internal state.
DspStatus GetCurrentStatus() const;
};
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <array>
#include <vector>
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/pipe.h"
#include "common/assert.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "core/hle/service/dsp_dsp.h"
namespace DSP {
namespace HLE {
static DspState dsp_state = DspState::Off;
static std::array<std::vector<u8>, NUM_DSP_PIPE> pipe_data;
void ResetPipes() {
for (auto& data : pipe_data) {
data.clear();
}
dsp_state = DspState::Off;
}
std::vector<u8> PipeRead(DspPipe pipe_number, u32 length) {
const size_t pipe_index = static_cast<size_t>(pipe_number);
if (pipe_index >= NUM_DSP_PIPE) {
LOG_ERROR(Audio_DSP, "pipe_number = %zu invalid", pipe_index);
return {};
}
if (length > UINT16_MAX) { // Can only read at most UINT16_MAX from the pipe
LOG_ERROR(Audio_DSP, "length of %u greater than max of %u", length, UINT16_MAX);
return {};
}
std::vector<u8>& data = pipe_data[pipe_index];
if (length > data.size()) {
LOG_WARNING(
Audio_DSP,
"pipe_number = %zu is out of data, application requested read of %u but %zu remain",
pipe_index, length, data.size());
length = static_cast<u32>(data.size());
}
if (length == 0)
return {};
std::vector<u8> ret(data.begin(), data.begin() + length);
data.erase(data.begin(), data.begin() + length);
return ret;
}
size_t GetPipeReadableSize(DspPipe pipe_number) {
const size_t pipe_index = static_cast<size_t>(pipe_number);
if (pipe_index >= NUM_DSP_PIPE) {
LOG_ERROR(Audio_DSP, "pipe_number = %zu invalid", pipe_index);
return 0;
}
return pipe_data[pipe_index].size();
}
static void WriteU16(DspPipe pipe_number, u16 value) {
const size_t pipe_index = static_cast<size_t>(pipe_number);
std::vector<u8>& data = pipe_data.at(pipe_index);
// Little endian
data.emplace_back(value & 0xFF);
data.emplace_back(value >> 8);
}
static void AudioPipeWriteStructAddresses() {
// These struct addresses are DSP dram addresses.
// See also: DSP_DSP::ConvertProcessAddressFromDspDram
static const std::array<u16, 15> struct_addresses = {
0x8000 + offsetof(SharedMemory, frame_counter) / 2,
0x8000 + offsetof(SharedMemory, source_configurations) / 2,
0x8000 + offsetof(SharedMemory, source_statuses) / 2,
0x8000 + offsetof(SharedMemory, adpcm_coefficients) / 2,
0x8000 + offsetof(SharedMemory, dsp_configuration) / 2,
0x8000 + offsetof(SharedMemory, dsp_status) / 2,
0x8000 + offsetof(SharedMemory, final_samples) / 2,
0x8000 + offsetof(SharedMemory, intermediate_mix_samples) / 2,
0x8000 + offsetof(SharedMemory, compressor) / 2,
0x8000 + offsetof(SharedMemory, dsp_debug) / 2,
0x8000 + offsetof(SharedMemory, unknown10) / 2,
0x8000 + offsetof(SharedMemory, unknown11) / 2,
0x8000 + offsetof(SharedMemory, unknown12) / 2,
0x8000 + offsetof(SharedMemory, unknown13) / 2,
0x8000 + offsetof(SharedMemory, unknown14) / 2,
};
// Begin with a u16 denoting the number of structs.
WriteU16(DspPipe::Audio, static_cast<u16>(struct_addresses.size()));
// Then write the struct addresses.
for (u16 addr : struct_addresses) {
WriteU16(DspPipe::Audio, addr);
}
// Signal that we have data on this pipe.
Service::DSP_DSP::SignalPipeInterrupt(DspPipe::Audio);
}
void PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer) {
switch (pipe_number) {
case DspPipe::Audio: {
if (buffer.size() != 4) {
LOG_ERROR(Audio_DSP, "DspPipe::Audio: Unexpected buffer length %zu was written",
buffer.size());
return;
}
enum class StateChange {
Initialize = 0,
Shutdown = 1,
Wakeup = 2,
Sleep = 3,
};
// The difference between Initialize and Wakeup is that Input state is maintained
// when sleeping but isn't when turning it off and on again. (TODO: Implement this.)
// Waking up from sleep garbles some of the structs in the memory region. (TODO:
// Implement this.) Applications store away the state of these structs before
// sleeping and reset it back after wakeup on behalf of the DSP.
switch (static_cast<StateChange>(buffer[0])) {
case StateChange::Initialize:
LOG_INFO(Audio_DSP, "Application has requested initialization of DSP hardware");
ResetPipes();
AudioPipeWriteStructAddresses();
dsp_state = DspState::On;
break;
case StateChange::Shutdown:
LOG_INFO(Audio_DSP, "Application has requested shutdown of DSP hardware");
dsp_state = DspState::Off;
break;
case StateChange::Wakeup:
LOG_INFO(Audio_DSP, "Application has requested wakeup of DSP hardware");
ResetPipes();
AudioPipeWriteStructAddresses();
dsp_state = DspState::On;
break;
case StateChange::Sleep:
LOG_INFO(Audio_DSP, "Application has requested sleep of DSP hardware");
UNIMPLEMENTED();
dsp_state = DspState::Sleeping;
break;
default:
LOG_ERROR(Audio_DSP,
"Application has requested unknown state transition of DSP hardware %hhu",
buffer[0]);
dsp_state = DspState::Off;
break;
}
return;
}
default:
LOG_CRITICAL(Audio_DSP, "pipe_number = %zu unimplemented",
static_cast<size_t>(pipe_number));
UNIMPLEMENTED();
return;
}
}
DspState GetDspState() {
return dsp_state;
}
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <vector>
#include "common/common_types.h"
namespace DSP {
namespace HLE {
/// Reset the pipes by setting pipe positions back to the beginning.
void ResetPipes();
enum class DspPipe {
Debug = 0,
Dma = 1,
Audio = 2,
Binary = 3,
};
constexpr size_t NUM_DSP_PIPE = 8;
/**
* Reads `length` bytes from the DSP pipe identified with `pipe_number`.
* @note Can read up to the maximum value of a u16 in bytes (65,535).
* @note IF an error is encoutered with either an invalid `pipe_number` or `length` value, an empty
* vector will be returned.
* @note IF `length` is set to 0, an empty vector will be returned.
* @note IF `length` is greater than the amount of data available, this function will only read the
* available amount.
* @param pipe_number a `DspPipe`
* @param length the number of bytes to read. The max is 65,535 (max of u16).
* @returns a vector of bytes from the specified pipe. On error, will be empty.
*/
std::vector<u8> PipeRead(DspPipe pipe_number, u32 length);
/**
* How much data is left in pipe
* @param pipe_number The Pipe ID
* @return The amount of data remaning in the pipe. This is the maximum length PipeRead will return.
*/
size_t GetPipeReadableSize(DspPipe pipe_number);
/**
* Write to a DSP pipe.
* @param pipe_number The Pipe ID
* @param buffer The data to write to the pipe.
*/
void PipeWrite(DspPipe pipe_number, const std::vector<u8>& buffer);
enum class DspState {
Off,
On,
Sleeping,
};
/// Get the state of the DSP
DspState GetDspState();
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <array>
#include "audio_core/codec.h"
#include "audio_core/hle/common.h"
#include "audio_core/hle/source.h"
#include "audio_core/interpolate.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/memory.h"
namespace DSP {
namespace HLE {
SourceStatus::Status Source::Tick(SourceConfiguration::Configuration& config,
const s16_le (&adpcm_coeffs)[16]) {
ParseConfig(config, adpcm_coeffs);
if (state.enabled) {
GenerateFrame();
}
return GetCurrentStatus();
}
void Source::MixInto(QuadFrame32& dest, size_t intermediate_mix_id) const {
if (!state.enabled)
return;
const std::array<float, 4>& gains = state.gain.at(intermediate_mix_id);
for (size_t samplei = 0; samplei < samples_per_frame; samplei++) {
// Conversion from stereo (current_frame) to quadraphonic (dest) occurs here.
dest[samplei][0] += static_cast<s32>(gains[0] * current_frame[samplei][0]);
dest[samplei][1] += static_cast<s32>(gains[1] * current_frame[samplei][1]);
dest[samplei][2] += static_cast<s32>(gains[2] * current_frame[samplei][0]);
dest[samplei][3] += static_cast<s32>(gains[3] * current_frame[samplei][1]);
}
}
void Source::Reset() {
current_frame.fill({});
state = {};
}
void Source::ParseConfig(SourceConfiguration::Configuration& config,
const s16_le (&adpcm_coeffs)[16]) {
if (!config.dirty_raw) {
return;
}
if (config.reset_flag) {
config.reset_flag.Assign(0);
Reset();
LOG_TRACE(Audio_DSP, "source_id=%zu reset", source_id);
}
if (config.partial_reset_flag) {
config.partial_reset_flag.Assign(0);
state.input_queue = std::priority_queue<Buffer, std::vector<Buffer>, BufferOrder>{};
LOG_TRACE(Audio_DSP, "source_id=%zu partial_reset", source_id);
}
if (config.enable_dirty) {
config.enable_dirty.Assign(0);
state.enabled = config.enable != 0;
LOG_TRACE(Audio_DSP, "source_id=%zu enable=%d", source_id, state.enabled);
}
if (config.sync_dirty) {
config.sync_dirty.Assign(0);
state.sync = config.sync;
LOG_TRACE(Audio_DSP, "source_id=%zu sync=%u", source_id, state.sync);
}
if (config.rate_multiplier_dirty) {
config.rate_multiplier_dirty.Assign(0);
state.rate_multiplier = config.rate_multiplier;
LOG_TRACE(Audio_DSP, "source_id=%zu rate=%f", source_id, state.rate_multiplier);
if (state.rate_multiplier <= 0) {
LOG_ERROR(Audio_DSP, "Was given an invalid rate multiplier: source_id=%zu rate=%f",
source_id, state.rate_multiplier);
state.rate_multiplier = 1.0f;
// Note: Actual firmware starts producing garbage if this occurs.
}
}
if (config.adpcm_coefficients_dirty) {
config.adpcm_coefficients_dirty.Assign(0);
std::transform(adpcm_coeffs, adpcm_coeffs + state.adpcm_coeffs.size(),
state.adpcm_coeffs.begin(),
[](const auto& coeff) { return static_cast<s16>(coeff); });
LOG_TRACE(Audio_DSP, "source_id=%zu adpcm update", source_id);
}
if (config.gain_0_dirty) {
config.gain_0_dirty.Assign(0);
std::transform(config.gain[0], config.gain[0] + state.gain[0].size(), state.gain[0].begin(),
[](const auto& coeff) { return static_cast<float>(coeff); });
LOG_TRACE(Audio_DSP, "source_id=%zu gain 0 update", source_id);
}
if (config.gain_1_dirty) {
config.gain_1_dirty.Assign(0);
std::transform(config.gain[1], config.gain[1] + state.gain[1].size(), state.gain[1].begin(),
[](const auto& coeff) { return static_cast<float>(coeff); });
LOG_TRACE(Audio_DSP, "source_id=%zu gain 1 update", source_id);
}
if (config.gain_2_dirty) {
config.gain_2_dirty.Assign(0);
std::transform(config.gain[2], config.gain[2] + state.gain[2].size(), state.gain[2].begin(),
[](const auto& coeff) { return static_cast<float>(coeff); });
LOG_TRACE(Audio_DSP, "source_id=%zu gain 2 update", source_id);
}
if (config.filters_enabled_dirty) {
config.filters_enabled_dirty.Assign(0);
state.filters.Enable(config.simple_filter_enabled.ToBool(),
config.biquad_filter_enabled.ToBool());
LOG_TRACE(Audio_DSP, "source_id=%zu enable_simple=%hu enable_biquad=%hu", source_id,
config.simple_filter_enabled.Value(), config.biquad_filter_enabled.Value());
}
if (config.simple_filter_dirty) {
config.simple_filter_dirty.Assign(0);
state.filters.Configure(config.simple_filter);
LOG_TRACE(Audio_DSP, "source_id=%zu simple filter update", source_id);
}
if (config.biquad_filter_dirty) {
config.biquad_filter_dirty.Assign(0);
state.filters.Configure(config.biquad_filter);
LOG_TRACE(Audio_DSP, "source_id=%zu biquad filter update", source_id);
}
if (config.interpolation_dirty) {
config.interpolation_dirty.Assign(0);
state.interpolation_mode = config.interpolation_mode;
LOG_TRACE(Audio_DSP, "source_id=%zu interpolation_mode=%zu", source_id,
static_cast<size_t>(state.interpolation_mode));
}
if (config.format_dirty || config.embedded_buffer_dirty) {
config.format_dirty.Assign(0);
state.format = config.format;
LOG_TRACE(Audio_DSP, "source_id=%zu format=%zu", source_id,
static_cast<size_t>(state.format));
}
if (config.mono_or_stereo_dirty || config.embedded_buffer_dirty) {
config.mono_or_stereo_dirty.Assign(0);
state.mono_or_stereo = config.mono_or_stereo;
LOG_TRACE(Audio_DSP, "source_id=%zu mono_or_stereo=%zu", source_id,
static_cast<size_t>(state.mono_or_stereo));
}
u32_dsp play_position = {};
if (config.play_position_dirty && config.play_position != 0) {
config.play_position_dirty.Assign(0);
play_position = config.play_position;
// play_position applies only to the embedded buffer, and defaults to 0 w/o a dirty bit
// This will be the starting sample for the first time the buffer is played.
}
if (config.embedded_buffer_dirty) {
config.embedded_buffer_dirty.Assign(0);
state.input_queue.emplace(Buffer{
config.physical_address,
config.length,
static_cast<u8>(config.adpcm_ps),
{config.adpcm_yn[0], config.adpcm_yn[1]},
config.adpcm_dirty.ToBool(),
config.is_looping.ToBool(),
config.buffer_id,
state.mono_or_stereo,
state.format,
false,
play_position,
false,
});
LOG_TRACE(Audio_DSP, "enqueuing embedded addr=0x%08x len=%u id=%hu start=%u",
config.physical_address, config.length, config.buffer_id,
static_cast<u32>(config.play_position));
}
if (config.loop_related_dirty && config.loop_related != 0) {
config.loop_related_dirty.Assign(0);
LOG_WARNING(Audio_DSP, "Unhandled complex loop with loop_related=0x%08x",
static_cast<u32>(config.loop_related));
}
if (config.buffer_queue_dirty) {
config.buffer_queue_dirty.Assign(0);
for (size_t i = 0; i < 4; i++) {
if (config.buffers_dirty & (1 << i)) {
const auto& b = config.buffers[i];
state.input_queue.emplace(Buffer{
b.physical_address,
b.length,
static_cast<u8>(b.adpcm_ps),
{b.adpcm_yn[0], b.adpcm_yn[1]},
b.adpcm_dirty != 0,
b.is_looping != 0,
b.buffer_id,
state.mono_or_stereo,
state.format,
true,
{}, // 0 in u32_dsp
false,
});
LOG_TRACE(Audio_DSP, "enqueuing queued %zu addr=0x%08x len=%u id=%hu", i,
b.physical_address, b.length, b.buffer_id);
}
}
config.buffers_dirty = 0;
}
if (config.dirty_raw) {
LOG_DEBUG(Audio_DSP, "source_id=%zu remaining_dirty=%x", source_id, config.dirty_raw);
}
config.dirty_raw = 0;
}
void Source::GenerateFrame() {
current_frame.fill({});
if (state.current_buffer.empty() && !DequeueBuffer()) {
state.enabled = false;
state.buffer_update = true;
state.current_buffer_id = 0;
return;
}
size_t frame_position = 0;
state.current_sample_number = state.next_sample_number;
while (frame_position < current_frame.size()) {
if (state.current_buffer.empty() && !DequeueBuffer()) {
break;
}
switch (state.interpolation_mode) {
case InterpolationMode::None:
AudioInterp::None(state.interp_state, state.current_buffer, state.rate_multiplier,
current_frame, frame_position);
break;
case InterpolationMode::Linear:
AudioInterp::Linear(state.interp_state, state.current_buffer, state.rate_multiplier,
current_frame, frame_position);
break;
case InterpolationMode::Polyphase:
// TODO(merry): Implement polyphase interpolation
LOG_DEBUG(Audio_DSP, "Polyphase interpolation unimplemented; falling back to linear");
AudioInterp::Linear(state.interp_state, state.current_buffer, state.rate_multiplier,
current_frame, frame_position);
break;
default:
UNIMPLEMENTED();
break;
}
}
state.next_sample_number += static_cast<u32>(frame_position);
state.filters.ProcessFrame(current_frame);
}
bool Source::DequeueBuffer() {
ASSERT_MSG(state.current_buffer.empty(),
"Shouldn't dequeue; we still have data in current_buffer");
if (state.input_queue.empty())
return false;
Buffer buf = state.input_queue.top();
// if we're in a loop, the current sound keeps playing afterwards, so leave the queue alone
if (!buf.is_looping) {
state.input_queue.pop();
}
if (buf.adpcm_dirty) {
state.adpcm_state.yn1 = buf.adpcm_yn[0];
state.adpcm_state.yn2 = buf.adpcm_yn[1];
}
const u8* const memory = Memory::GetPhysicalPointer(buf.physical_address);
if (memory) {
const unsigned num_channels = buf.mono_or_stereo == MonoOrStereo::Stereo ? 2 : 1;
switch (buf.format) {
case Format::PCM8:
state.current_buffer = Codec::DecodePCM8(num_channels, memory, buf.length);
break;
case Format::PCM16:
state.current_buffer = Codec::DecodePCM16(num_channels, memory, buf.length);
break;
case Format::ADPCM:
DEBUG_ASSERT(num_channels == 1);
state.current_buffer =
Codec::DecodeADPCM(memory, buf.length, state.adpcm_coeffs, state.adpcm_state);
break;
default:
UNIMPLEMENTED();
break;
}
} else {
LOG_WARNING(Audio_DSP,
"source_id=%zu buffer_id=%hu length=%u: Invalid physical address 0x%08X",
source_id, buf.buffer_id, buf.length, buf.physical_address);
state.current_buffer.clear();
return true;
}
// the first playthrough starts at play_position, loops start at the beginning of the buffer
state.current_sample_number = (!buf.has_played) ? buf.play_position : 0;
state.next_sample_number = state.current_sample_number;
state.current_buffer_id = buf.buffer_id;
state.buffer_update = buf.from_queue && !buf.has_played;
buf.has_played = true;
LOG_TRACE(Audio_DSP, "source_id=%zu buffer_id=%hu from_queue=%s current_buffer.size()=%zu",
source_id, buf.buffer_id, buf.from_queue ? "true" : "false",
state.current_buffer.size());
return true;
}
SourceStatus::Status Source::GetCurrentStatus() {
SourceStatus::Status ret;
// Applications depend on the correct emulation of
// current_buffer_id_dirty and current_buffer_id to synchronise
// audio with video.
ret.is_enabled = state.enabled;
ret.current_buffer_id_dirty = state.buffer_update ? 1 : 0;
state.buffer_update = false;
ret.current_buffer_id = state.current_buffer_id;
ret.buffer_position = state.current_sample_number;
ret.sync = state.sync;
return ret;
}
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <queue>
#include <vector>
#include "audio_core/codec.h"
#include "audio_core/hle/common.h"
#include "audio_core/hle/dsp.h"
#include "audio_core/hle/filter.h"
#include "audio_core/interpolate.h"
#include "common/common_types.h"
namespace DSP {
namespace HLE {
/**
* This module performs:
* - Buffer management
* - Decoding of buffers
* - Buffer resampling and interpolation
* - Per-source filtering (SimpleFilter, BiquadFilter)
* - Per-source gain
* - Other per-source processing
*/
class Source final {
public:
explicit Source(size_t source_id_) : source_id(source_id_) {
Reset();
}
/// Resets internal state.
void Reset();
/**
* This is called once every audio frame. This performs per-source processing every frame.
* @param config The new configuration we've got for this Source from the application.
* @param adpcm_coeffs ADPCM coefficients to use if config tells us to use them (may contain
* invalid values otherwise).
* @return The current status of this Source. This is given back to the emulated application via
* SharedMemory.
*/
SourceStatus::Status Tick(SourceConfiguration::Configuration& config,
const s16_le (&adpcm_coeffs)[16]);
/**
* Mix this source's output into dest, using the gains for the `intermediate_mix_id`-th
* intermediate mixer.
* @param dest The QuadFrame32 to mix into.
* @param intermediate_mix_id The id of the intermediate mix whose gains we are using.
*/
void MixInto(QuadFrame32& dest, size_t intermediate_mix_id) const;
private:
const size_t source_id;
StereoFrame16 current_frame;
using Format = SourceConfiguration::Configuration::Format;
using InterpolationMode = SourceConfiguration::Configuration::InterpolationMode;
using MonoOrStereo = SourceConfiguration::Configuration::MonoOrStereo;
/// Internal representation of a buffer for our buffer queue
struct Buffer {
PAddr physical_address;
u32 length;
u8 adpcm_ps;
std::array<u16, 2> adpcm_yn;
bool adpcm_dirty;
bool is_looping;
u16 buffer_id;
MonoOrStereo mono_or_stereo;
Format format;
bool from_queue;
u32_dsp play_position; // = 0;
bool has_played; // = false;
};
struct BufferOrder {
bool operator()(const Buffer& a, const Buffer& b) const {
// Lower buffer_id comes first.
return a.buffer_id > b.buffer_id;
}
};
struct {
// State variables
bool enabled = false;
u16 sync = 0;
// Mixing
std::array<std::array<float, 4>, 3> gain = {};
// Buffer queue
std::priority_queue<Buffer, std::vector<Buffer>, BufferOrder> input_queue;
MonoOrStereo mono_or_stereo = MonoOrStereo::Mono;
Format format = Format::ADPCM;
// Current buffer
u32 current_sample_number = 0;
u32 next_sample_number = 0;
AudioInterp::StereoBuffer16 current_buffer;
// buffer_id state
bool buffer_update = false;
u32 current_buffer_id = 0;
// Decoding state
std::array<s16, 16> adpcm_coeffs = {};
Codec::ADPCMState adpcm_state = {};
// Resampling state
float rate_multiplier = 1.0;
InterpolationMode interpolation_mode = InterpolationMode::Polyphase;
AudioInterp::State interp_state = {};
// Filter state
SourceFilters filters;
} state;
// Internal functions
/// INTERNAL: Update our internal state based on the current config.
void ParseConfig(SourceConfiguration::Configuration& config, const s16_le (&adpcm_coeffs)[16]);
/// INTERNAL: Generate the current audio output for this frame based on our internal state.
void GenerateFrame();
/// INTERNAL: Dequeues a buffer and does preprocessing on it (decoding, resampling). Puts it
/// into current_buffer.
bool DequeueBuffer();
/// INTERNAL: Generates a SourceStatus::Status based on our internal state.
SourceStatus::Status GetCurrentStatus();
};
} // namespace HLE
} // namespace DSP

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "audio_core/interpolate.h"
#include "common/assert.h"
#include "common/math_util.h"
namespace AudioInterp {
// Calculations are done in fixed point with 24 fractional bits.
// (This is not verified. This was chosen for minimal error.)
constexpr u64 scale_factor = 1 << 24;
constexpr u64 scale_mask = scale_factor - 1;
/// Here we step over the input in steps of rate, until we consume all of the input.
/// Three adjacent samples are passed to fn each step.
template <typename Function>
static void StepOverSamples(State& state, StereoBuffer16& input, float rate,
DSP::HLE::StereoFrame16& output, size_t& outputi, Function fn) {
ASSERT(rate > 0);
if (input.empty())
return;
input.insert(input.begin(), {state.xn2, state.xn1});
const u64 step_size = static_cast<u64>(rate * scale_factor);
u64 fposition = state.fposition;
size_t inputi = 0;
while (outputi < output.size()) {
inputi = static_cast<size_t>(fposition / scale_factor);
if (inputi + 2 >= input.size()) {
inputi = input.size() - 2;
break;
}
u64 fraction = fposition & scale_mask;
output[outputi++] = fn(fraction, input[inputi], input[inputi + 1], input[inputi + 2]);
fposition += step_size;
}
state.xn2 = input[inputi];
state.xn1 = input[inputi + 1];
state.fposition = fposition - inputi * scale_factor;
input.erase(input.begin(), std::next(input.begin(), inputi + 2));
}
void None(State& state, StereoBuffer16& input, float rate, DSP::HLE::StereoFrame16& output,
size_t& outputi) {
StepOverSamples(
state, input, rate, output, outputi,
[](u64 fraction, const auto& x0, const auto& x1, const auto& x2) { return x0; });
}
void Linear(State& state, StereoBuffer16& input, float rate, DSP::HLE::StereoFrame16& output,
size_t& outputi) {
// Note on accuracy: Some values that this produces are +/- 1 from the actual firmware.
StepOverSamples(state, input, rate, output, outputi,
[](u64 fraction, const auto& x0, const auto& x1, const auto& x2) {
// This is a saturated subtraction. (Verified by black-box fuzzing.)
s64 delta0 = MathUtil::Clamp<s64>(x1[0] - x0[0], -32768, 32767);
s64 delta1 = MathUtil::Clamp<s64>(x1[1] - x0[1], -32768, 32767);
return std::array<s16, 2>{
static_cast<s16>(x0[0] + fraction * delta0 / scale_factor),
static_cast<s16>(x0[1] + fraction * delta1 / scale_factor),
};
});
}
} // namespace AudioInterp

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <deque>
#include "audio_core/hle/common.h"
#include "common/common_types.h"
namespace AudioInterp {
/// A variable length buffer of signed PCM16 stereo samples.
using StereoBuffer16 = std::deque<std::array<s16, 2>>;
struct State {
/// Two historical samples.
std::array<s16, 2> xn1 = {}; ///< x[n-1]
std::array<s16, 2> xn2 = {}; ///< x[n-2]
/// Current fractional position.
u64 fposition = 0;
};
/**
* No interpolation. This is equivalent to a zero-order hold. There is a two-sample predelay.
* @param state Interpolation state.
* @param input Input buffer.
* @param rate Stretch factor. Must be a positive non-zero value.
* rate > 1.0 performs decimation and rate < 1.0 performs upsampling.
* @param output The resampled audio buffer.
* @param outputi The index of output to start writing to.
*/
void None(State& state, StereoBuffer16& input, float rate, DSP::HLE::StereoFrame16& output,
size_t& outputi);
/**
* Linear interpolation. This is equivalent to a first-order hold. There is a two-sample predelay.
* @param state Interpolation state.
* @param input Input buffer.
* @param rate Stretch factor. Must be a positive non-zero value.
* rate > 1.0 performs decimation and rate < 1.0 performs upsampling.
* @param output The resampled audio buffer.
* @param outputi The index of output to start writing to.
*/
void Linear(State& state, StereoBuffer16& input, float rate, DSP::HLE::StereoFrame16& output,
size_t& outputi);
} // namespace AudioInterp

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include "audio_core/audio_core.h"
#include "audio_core/sink.h"
namespace AudioCore {
class NullSink final : public Sink {
public:
~NullSink() override = default;
unsigned int GetNativeSampleRate() const override {
return native_sample_rate;
}
void EnqueueSamples(const s16*, size_t) override {}
size_t SamplesInQueue() const override {
return 0;
}
void SetDevice(int device_id) override {}
std::vector<std::string> GetDeviceList() const override {
return {};
}
};
} // namespace AudioCore

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <list>
#include <numeric>
#include <SDL.h>
#include "audio_core/audio_core.h"
#include "audio_core/sdl2_sink.h"
#include "common/assert.h"
#include "common/logging/log.h"
#include "core/settings.h"
namespace AudioCore {
struct SDL2Sink::Impl {
unsigned int sample_rate = 0;
SDL_AudioDeviceID audio_device_id = 0;
std::list<std::vector<s16>> queue;
static void Callback(void* impl_, u8* buffer, int buffer_size_in_bytes);
};
SDL2Sink::SDL2Sink() : impl(std::make_unique<Impl>()) {
if (SDL_Init(SDL_INIT_AUDIO) < 0) {
LOG_CRITICAL(Audio_Sink, "SDL_Init(SDL_INIT_AUDIO) failed with: %s", SDL_GetError());
impl->audio_device_id = 0;
return;
}
SDL_AudioSpec desired_audiospec;
SDL_zero(desired_audiospec);
desired_audiospec.format = AUDIO_S16;
desired_audiospec.channels = 2;
desired_audiospec.freq = native_sample_rate;
desired_audiospec.samples = 512;
desired_audiospec.userdata = impl.get();
desired_audiospec.callback = &Impl::Callback;
SDL_AudioSpec obtained_audiospec;
SDL_zero(obtained_audiospec);
int device_count = SDL_GetNumAudioDevices(0);
device_list.clear();
for (int i = 0; i < device_count; ++i) {
device_list.push_back(SDL_GetAudioDeviceName(i, 0));
}
const char* device = nullptr;
if (device_count >= 1 && Settings::values.audio_device_id != "auto" &&
!Settings::values.audio_device_id.empty()) {
device = Settings::values.audio_device_id.c_str();
}
impl->audio_device_id = SDL_OpenAudioDevice(device, false, &desired_audiospec,
&obtained_audiospec, SDL_AUDIO_ALLOW_ANY_CHANGE);
if (impl->audio_device_id <= 0) {
LOG_CRITICAL(Audio_Sink, "SDL_OpenAudioDevice failed with code %d for device \"%s\"",
impl->audio_device_id, Settings::values.audio_device_id.c_str());
return;
}
impl->sample_rate = obtained_audiospec.freq;
// SDL2 audio devices start out paused, unpause it:
SDL_PauseAudioDevice(impl->audio_device_id, 0);
}
SDL2Sink::~SDL2Sink() {
if (impl->audio_device_id <= 0)
return;
SDL_CloseAudioDevice(impl->audio_device_id);
}
unsigned int SDL2Sink::GetNativeSampleRate() const {
if (impl->audio_device_id <= 0)
return native_sample_rate;
return impl->sample_rate;
}
std::vector<std::string> SDL2Sink::GetDeviceList() const {
return device_list;
}
void SDL2Sink::EnqueueSamples(const s16* samples, size_t sample_count) {
if (impl->audio_device_id <= 0)
return;
SDL_LockAudioDevice(impl->audio_device_id);
impl->queue.emplace_back(samples, samples + sample_count * 2);
SDL_UnlockAudioDevice(impl->audio_device_id);
}
size_t SDL2Sink::SamplesInQueue() const {
if (impl->audio_device_id <= 0)
return 0;
SDL_LockAudioDevice(impl->audio_device_id);
size_t total_size = std::accumulate(impl->queue.begin(), impl->queue.end(),
static_cast<size_t>(0), [](size_t sum, const auto& buffer) {
// Division by two because each stereo sample is made of
// two s16.
return sum + buffer.size() / 2;
});
SDL_UnlockAudioDevice(impl->audio_device_id);
return total_size;
}
void SDL2Sink::SetDevice(int device_id) {
this->device_id = device_id;
}
void SDL2Sink::Impl::Callback(void* impl_, u8* buffer, int buffer_size_in_bytes) {
Impl* impl = reinterpret_cast<Impl*>(impl_);
size_t remaining_size = static_cast<size_t>(buffer_size_in_bytes) /
sizeof(s16); // Keep track of size in 16-bit increments.
while (remaining_size > 0 && !impl->queue.empty()) {
if (impl->queue.front().size() <= remaining_size) {
memcpy(buffer, impl->queue.front().data(), impl->queue.front().size() * sizeof(s16));
buffer += impl->queue.front().size() * sizeof(s16);
remaining_size -= impl->queue.front().size();
impl->queue.pop_front();
} else {
memcpy(buffer, impl->queue.front().data(), remaining_size * sizeof(s16));
buffer += remaining_size * sizeof(s16);
impl->queue.front().erase(impl->queue.front().begin(),
impl->queue.front().begin() + remaining_size);
remaining_size = 0;
}
}
if (remaining_size > 0) {
memset(buffer, 0, remaining_size * sizeof(s16));
}
}
} // namespace AudioCore

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <memory>
#include "audio_core/sink.h"
namespace AudioCore {
class SDL2Sink final : public Sink {
public:
SDL2Sink();
~SDL2Sink() override;
unsigned int GetNativeSampleRate() const override;
void EnqueueSamples(const s16* samples, size_t sample_count) override;
size_t SamplesInQueue() const override;
std::vector<std::string> GetDeviceList() const override;
void SetDevice(int device_id) override;
private:
struct Impl;
std::unique_ptr<Impl> impl;
int device_id;
std::vector<std::string> device_list;
};
} // namespace AudioCore

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <vector>
#include "common/common_types.h"
namespace AudioCore {
/**
* This class is an interface for an audio sink. An audio sink accepts samples in stereo signed
* PCM16 format to be output. Sinks *do not* handle resampling and expect the correct sample rate.
* They are dumb outputs.
*/
class Sink {
public:
virtual ~Sink() = default;
/// The native rate of this sink. The sink expects to be fed samples that respect this. (Units:
/// samples/sec)
virtual unsigned int GetNativeSampleRate() const = 0;
/**
* Feed stereo samples to sink.
* @param samples Samples in interleaved stereo PCM16 format.
* @param sample_count Number of samples.
*/
virtual void EnqueueSamples(const s16* samples, size_t sample_count) = 0;
/// Samples enqueued that have not been played yet.
virtual std::size_t SamplesInQueue() const = 0;
/**
* Sets the desired output device.
* @param device_id ID of the desired device.
*/
virtual void SetDevice(int device_id) = 0;
/// Returns the list of available devices.
virtual std::vector<std::string> GetDeviceList() const = 0;
};
} // namespace

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <memory>
#include <vector>
#include "audio_core/null_sink.h"
#include "audio_core/sink_details.h"
#ifdef HAVE_SDL2
#include "audio_core/sdl2_sink.h"
#endif
#include "common/logging/log.h"
namespace AudioCore {
// g_sink_details is ordered in terms of desirability, with the best choice at the top.
const std::vector<SinkDetails> g_sink_details = {
#ifdef HAVE_SDL2
{"sdl2", []() { return std::make_unique<SDL2Sink>(); }},
#endif
{"null", []() { return std::make_unique<NullSink>(); }},
};
const SinkDetails& GetSinkDetails(std::string sink_id) {
auto iter =
std::find_if(g_sink_details.begin(), g_sink_details.end(),
[sink_id](const auto& sink_detail) { return sink_detail.id == sink_id; });
if (sink_id == "auto" || iter == g_sink_details.end()) {
if (sink_id != "auto") {
LOG_ERROR(Audio, "AudioCore::SelectSink given invalid sink_id %s", sink_id.c_str());
}
// Auto-select.
// g_sink_details is ordered in terms of desirability, with the best choice at the front.
iter = g_sink_details.begin();
}
return *iter;
}
} // namespace AudioCore

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <functional>
#include <memory>
#include <vector>
namespace AudioCore {
class Sink;
struct SinkDetails {
SinkDetails(const char* id_, std::function<std::unique_ptr<Sink>()> factory_)
: id(id_), factory(factory_) {}
/// Name for this sink.
const char* id;
/// A method to call to construct an instance of this type of sink.
std::function<std::unique_ptr<Sink>()> factory;
};
extern const std::vector<SinkDetails> g_sink_details;
const SinkDetails& GetSinkDetails(std::string sink_id);
} // namespace AudioCore

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <chrono>
#include <cmath>
#include <vector>
#include <SoundTouch.h>
#include "audio_core/audio_core.h"
#include "audio_core/time_stretch.h"
#include "common/common_types.h"
#include "common/logging/log.h"
#include "common/math_util.h"
using steady_clock = std::chrono::steady_clock;
namespace AudioCore {
constexpr double MIN_RATIO = 0.1;
constexpr double MAX_RATIO = 100.0;
static double ClampRatio(double ratio) {
return MathUtil::Clamp(ratio, MIN_RATIO, MAX_RATIO);
}
constexpr double MIN_DELAY_TIME = 0.05; // Units: seconds
constexpr double MAX_DELAY_TIME = 0.25; // Units: seconds
constexpr size_t DROP_FRAMES_SAMPLE_DELAY = 16000; // Units: samples
constexpr double SMOOTHING_FACTOR = 0.007;
struct TimeStretcher::Impl {
soundtouch::SoundTouch soundtouch;
steady_clock::time_point frame_timer = steady_clock::now();
size_t samples_queued = 0;
double smoothed_ratio = 1.0;
double sample_rate = static_cast<double>(native_sample_rate);
};
std::vector<s16> TimeStretcher::Process(size_t samples_in_queue) {
// This is a very simple algorithm without any fancy control theory. It works and is stable.
double ratio = CalculateCurrentRatio();
ratio = CorrectForUnderAndOverflow(ratio, samples_in_queue);
impl->smoothed_ratio =
(1.0 - SMOOTHING_FACTOR) * impl->smoothed_ratio + SMOOTHING_FACTOR * ratio;
impl->smoothed_ratio = ClampRatio(impl->smoothed_ratio);
// SoundTouch's tempo definition the inverse of our ratio definition.
impl->soundtouch.setTempo(1.0 / impl->smoothed_ratio);
std::vector<s16> samples = GetSamples();
if (samples_in_queue >= DROP_FRAMES_SAMPLE_DELAY) {
samples.clear();
LOG_TRACE(Audio, "Dropping frames!");
}
return samples;
}
TimeStretcher::TimeStretcher() : impl(std::make_unique<Impl>()) {
impl->soundtouch.setPitch(1.0);
impl->soundtouch.setChannels(2);
impl->soundtouch.setSampleRate(native_sample_rate);
Reset();
}
TimeStretcher::~TimeStretcher() {
impl->soundtouch.clear();
}
void TimeStretcher::SetOutputSampleRate(unsigned int sample_rate) {
impl->sample_rate = static_cast<double>(sample_rate);
impl->soundtouch.setRate(static_cast<double>(native_sample_rate) / impl->sample_rate);
}
void TimeStretcher::AddSamples(const s16* buffer, size_t num_samples) {
impl->soundtouch.putSamples(buffer, static_cast<uint>(num_samples));
impl->samples_queued += num_samples;
}
void TimeStretcher::Flush() {
impl->soundtouch.flush();
}
void TimeStretcher::Reset() {
impl->soundtouch.setTempo(1.0);
impl->soundtouch.clear();
impl->smoothed_ratio = 1.0;
impl->frame_timer = steady_clock::now();
impl->samples_queued = 0;
SetOutputSampleRate(native_sample_rate);
}
double TimeStretcher::CalculateCurrentRatio() {
const steady_clock::time_point now = steady_clock::now();
const std::chrono::duration<double> duration = now - impl->frame_timer;
const double expected_time =
static_cast<double>(impl->samples_queued) / static_cast<double>(native_sample_rate);
const double actual_time = duration.count();
double ratio;
if (expected_time != 0) {
ratio = ClampRatio(actual_time / expected_time);
} else {
ratio = impl->smoothed_ratio;
}
impl->frame_timer = now;
impl->samples_queued = 0;
return ratio;
}
double TimeStretcher::CorrectForUnderAndOverflow(double ratio, size_t sample_delay) const {
const size_t min_sample_delay = static_cast<size_t>(MIN_DELAY_TIME * impl->sample_rate);
const size_t max_sample_delay = static_cast<size_t>(MAX_DELAY_TIME * impl->sample_rate);
if (sample_delay < min_sample_delay) {
// Make the ratio bigger.
ratio = ratio > 1.0 ? ratio * ratio : sqrt(ratio);
} else if (sample_delay > max_sample_delay) {
// Make the ratio smaller.
ratio = ratio > 1.0 ? sqrt(ratio) : ratio * ratio;
}
return ClampRatio(ratio);
}
std::vector<s16> TimeStretcher::GetSamples() {
uint available = impl->soundtouch.numSamples();
std::vector<s16> output(static_cast<size_t>(available) * 2);
impl->soundtouch.receiveSamples(output.data(), available);
return output;
}
} // namespace AudioCore

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// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <cstddef>
#include <memory>
#include <vector>
#include "common/common_types.h"
namespace AudioCore {
class TimeStretcher final {
public:
TimeStretcher();
~TimeStretcher();
/**
* Set sample rate for the samples that Process returns.
* @param sample_rate The sample rate.
*/
void SetOutputSampleRate(unsigned int sample_rate);
/**
* Add samples to be processed.
* @param sample_buffer Buffer of samples in interleaved stereo PCM16 format.
* @param num_samples Number of samples.
*/
void AddSamples(const s16* sample_buffer, size_t num_samples);
/// Flush audio remaining in internal buffers.
void Flush();
/// Resets internal state and clears buffers.
void Reset();
/**
* Does audio stretching and produces the time-stretched samples.
* Timer calculations use sample_delay to determine how much of a margin we have.
* @param sample_delay How many samples are buffered downstream of this module and haven't been
* played yet.
* @return Samples to play in interleaved stereo PCM16 format.
*/
std::vector<s16> Process(size_t sample_delay);
private:
struct Impl;
std::unique_ptr<Impl> impl;
/// INTERNAL: ratio = wallclock time / emulated time
double CalculateCurrentRatio();
/// INTERNAL: If we have too many or too few samples downstream, nudge ratio in the appropriate
/// direction.
double CorrectForUnderAndOverflow(double ratio, size_t sample_delay) const;
/// INTERNAL: Gets the time-stretched samples from SoundTouch.
std::vector<s16> GetSamples();
};
} // namespace AudioCore

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set(SRCS
network.cpp
packet.cpp
room.cpp
room_member.cpp
)
set(HEADERS
network.h
packet.h
room.h
room_member.h
)
create_directory_groups(${SRCS} ${HEADERS})
add_library(network STATIC ${SRCS} ${HEADERS})
target_link_libraries(network PRIVATE common enet)

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/logging/log.h"
#include "enet/enet.h"
#include "network/network.h"
namespace Network {
static std::shared_ptr<RoomMember> g_room_member; ///< RoomMember (Client) for network games
static std::shared_ptr<Room> g_room; ///< Room (Server) for network games
// TODO(B3N30): Put these globals into a networking class
bool Init() {
if (enet_initialize() != 0) {
LOG_ERROR(Network, "Error initalizing ENet");
return false;
}
g_room = std::make_shared<Room>();
g_room_member = std::make_shared<RoomMember>();
LOG_DEBUG(Network, "initialized OK");
return true;
}
std::weak_ptr<Room> GetRoom() {
return g_room;
}
std::weak_ptr<RoomMember> GetRoomMember() {
return g_room_member;
}
void Shutdown() {
if (g_room_member) {
if (g_room_member->IsConnected())
g_room_member->Leave();
g_room_member.reset();
}
if (g_room) {
if (g_room->GetState() == Room::State::Open)
g_room->Destroy();
g_room.reset();
}
enet_deinitialize();
LOG_DEBUG(Network, "shutdown OK");
}
} // namespace Network

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
#include "network/room.h"
#include "network/room_member.h"
namespace Network {
/// Initializes and registers the network device, the room, and the room member.
bool Init();
/// Returns a pointer to the room handle
std::weak_ptr<Room> GetRoom();
/// Returns a pointer to the room member handle
std::weak_ptr<RoomMember> GetRoomMember();
/// Unregisters the network device, the room, and the room member and shut them down.
void Shutdown();
} // namespace Network

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#ifdef _WIN32
#include <winsock2.h>
#else
#include <arpa/inet.h>
#endif
#include <cstring>
#include <string>
#include "network/packet.h"
namespace Network {
#ifndef htonll
u64 htonll(u64 x) {
return ((1 == htonl(1)) ? (x) : ((uint64_t)htonl((x)&0xFFFFFFFF) << 32) | htonl((x) >> 32));
}
#endif
#ifndef ntohll
u64 ntohll(u64 x) {
return ((1 == ntohl(1)) ? (x) : ((uint64_t)ntohl((x)&0xFFFFFFFF) << 32) | ntohl((x) >> 32));
}
#endif
void Packet::Append(const void* in_data, std::size_t size_in_bytes) {
if (in_data && (size_in_bytes > 0)) {
std::size_t start = data.size();
data.resize(start + size_in_bytes);
std::memcpy(&data[start], in_data, size_in_bytes);
}
}
void Packet::Read(void* out_data, std::size_t size_in_bytes) {
if (out_data && CheckSize(size_in_bytes)) {
std::memcpy(out_data, &data[read_pos], size_in_bytes);
read_pos += size_in_bytes;
}
}
void Packet::Clear() {
data.clear();
read_pos = 0;
is_valid = true;
}
const void* Packet::GetData() const {
return !data.empty() ? &data[0] : nullptr;
}
void Packet::IgnoreBytes(u32 length) {
read_pos += length;
}
std::size_t Packet::GetDataSize() const {
return data.size();
}
bool Packet::EndOfPacket() const {
return read_pos >= data.size();
}
Packet::operator bool() const {
return is_valid ? &Packet::CheckSize : nullptr;
}
Packet& Packet::operator>>(bool& out_data) {
u8 value;
if (*this >> value) {
out_data = (value != 0);
}
return *this;
}
Packet& Packet::operator>>(s8& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(u8& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(s16& out_data) {
s16 value;
Read(&value, sizeof(value));
out_data = ntohs(value);
return *this;
}
Packet& Packet::operator>>(u16& out_data) {
u16 value;
Read(&value, sizeof(value));
out_data = ntohs(value);
return *this;
}
Packet& Packet::operator>>(s32& out_data) {
s32 value;
Read(&value, sizeof(value));
out_data = ntohl(value);
return *this;
}
Packet& Packet::operator>>(u32& out_data) {
u32 value;
Read(&value, sizeof(value));
out_data = ntohl(value);
return *this;
}
Packet& Packet::operator>>(s64& out_data) {
s64 value;
Read(&value, sizeof(value));
out_data = ntohll(value);
return *this;
}
Packet& Packet::operator>>(u64& out_data) {
u64 value;
Read(&value, sizeof(value));
out_data = ntohll(value);
return *this;
}
Packet& Packet::operator>>(float& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(double& out_data) {
Read(&out_data, sizeof(out_data));
return *this;
}
Packet& Packet::operator>>(char* out_data) {
// First extract string length
u32 length = 0;
*this >> length;
if ((length > 0) && CheckSize(length)) {
// Then extract characters
std::memcpy(out_data, &data[read_pos], length);
out_data[length] = '\0';
// Update reading position
read_pos += length;
}
return *this;
}
Packet& Packet::operator>>(std::string& out_data) {
// First extract string length
u32 length = 0;
*this >> length;
out_data.clear();
if ((length > 0) && CheckSize(length)) {
// Then extract characters
out_data.assign(&data[read_pos], length);
// Update reading position
read_pos += length;
}
return *this;
}
Packet& Packet::operator<<(bool in_data) {
*this << static_cast<u8>(in_data);
return *this;
}
Packet& Packet::operator<<(s8 in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(u8 in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(s16 in_data) {
s16 toWrite = htons(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(u16 in_data) {
u16 toWrite = htons(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(s32 in_data) {
s32 toWrite = htonl(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(u32 in_data) {
u32 toWrite = htonl(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(s64 in_data) {
s64 toWrite = htonll(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(u64 in_data) {
u64 toWrite = htonll(in_data);
Append(&toWrite, sizeof(toWrite));
return *this;
}
Packet& Packet::operator<<(float in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(double in_data) {
Append(&in_data, sizeof(in_data));
return *this;
}
Packet& Packet::operator<<(const char* in_data) {
// First insert string length
u32 length = static_cast<u32>(std::strlen(in_data));
*this << length;
// Then insert characters
Append(in_data, length * sizeof(char));
return *this;
}
Packet& Packet::operator<<(const std::string& in_data) {
// First insert string length
u32 length = static_cast<u32>(in_data.size());
*this << length;
// Then insert characters
if (length > 0)
Append(in_data.c_str(), length * sizeof(std::string::value_type));
return *this;
}
bool Packet::CheckSize(std::size_t size) {
is_valid = is_valid && (read_pos + size <= data.size());
return is_valid;
}
} // namespace Network

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <vector>
#include "common/common_types.h"
namespace Network {
/// A class that serializes data for network transfer. It also handles endianess
class Packet {
public:
Packet() = default;
~Packet() = default;
/**
* Append data to the end of the packet
* @param data Pointer to the sequence of bytes to append
* @param size_in_bytes Number of bytes to append
*/
void Append(const void* data, std::size_t size_in_bytes);
/**
* Reads data from the current read position of the packet
* @param out_data Pointer where the data should get written to
* @param size_in_bytes Number of bytes to read
*/
void Read(void* out_data, std::size_t size_in_bytes);
/**
* Clear the packet
* After calling Clear, the packet is empty.
*/
void Clear();
/**
* Ignores bytes while reading
* @param length THe number of bytes to ignore
*/
void IgnoreBytes(u32 length);
/**
* Get a pointer to the data contained in the packet
* @return Pointer to the data
*/
const void* GetData() const;
/**
* This function returns the number of bytes pointed to by
* what getData returns.
* @return Data size, in bytes
*/
std::size_t GetDataSize() const;
/**
* This function is useful to know if there is some data
* left to be read, without actually reading it.
* @return True if all data was read, false otherwise
*/
bool EndOfPacket() const;
explicit operator bool() const;
/// Overloads of operator >> to read data from the packet
Packet& operator>>(bool& out_data);
Packet& operator>>(s8& out_data);
Packet& operator>>(u8& out_data);
Packet& operator>>(s16& out_data);
Packet& operator>>(u16& out_data);
Packet& operator>>(s32& out_data);
Packet& operator>>(u32& out_data);
Packet& operator>>(s64& out_data);
Packet& operator>>(u64& out_data);
Packet& operator>>(float& out_data);
Packet& operator>>(double& out_data);
Packet& operator>>(char* out_data);
Packet& operator>>(std::string& out_data);
template <typename T>
Packet& operator>>(std::vector<T>& out_data);
template <typename T, std::size_t S>
Packet& operator>>(std::array<T, S>& out_data);
/// Overloads of operator << to write data into the packet
Packet& operator<<(bool in_data);
Packet& operator<<(s8 in_data);
Packet& operator<<(u8 in_data);
Packet& operator<<(s16 in_data);
Packet& operator<<(u16 in_data);
Packet& operator<<(s32 in_data);
Packet& operator<<(u32 in_data);
Packet& operator<<(s64 in_data);
Packet& operator<<(u64 in_data);
Packet& operator<<(float in_data);
Packet& operator<<(double in_data);
Packet& operator<<(const char* in_data);
Packet& operator<<(const std::string& in_data);
template <typename T>
Packet& operator<<(const std::vector<T>& in_data);
template <typename T, std::size_t S>
Packet& operator<<(const std::array<T, S>& data);
private:
/**
* Check if the packet can extract a given number of bytes
* This function updates accordingly the state of the packet.
* @param size Size to check
* @return True if size bytes can be read from the packet
*/
bool CheckSize(std::size_t size);
// Member data
std::vector<char> data; ///< Data stored in the packet
std::size_t read_pos = 0; ///< Current reading position in the packet
bool is_valid = true; ///< Reading state of the packet
};
template <typename T>
Packet& Packet::operator>>(std::vector<T>& out_data) {
// First extract the size
u32 size = 0;
*this >> size;
out_data.resize(size);
// Then extract the data
for (std::size_t i = 0; i < out_data.size(); ++i) {
T character = 0;
*this >> character;
out_data[i] = character;
}
return *this;
}
template <typename T, std::size_t S>
Packet& Packet::operator>>(std::array<T, S>& out_data) {
for (std::size_t i = 0; i < out_data.size(); ++i) {
T character = 0;
*this >> character;
out_data[i] = character;
}
return *this;
}
template <typename T>
Packet& Packet::operator<<(const std::vector<T>& in_data) {
// First insert the size
*this << static_cast<u32>(in_data.size());
// Then insert the data
for (std::size_t i = 0; i < in_data.size(); ++i) {
*this << in_data[i];
}
return *this;
}
template <typename T, std::size_t S>
Packet& Packet::operator<<(const std::array<T, S>& in_data) {
for (std::size_t i = 0; i < in_data.size(); ++i) {
*this << in_data[i];
}
return *this;
}
} // namespace Network

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@ -1,497 +0,0 @@
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <algorithm>
#include <atomic>
#include <mutex>
#include <random>
#include <thread>
#include "enet/enet.h"
#include "network/packet.h"
#include "network/room.h"
namespace Network {
/// Maximum number of concurrent connections allowed to this room.
static constexpr u32 MaxConcurrentConnections = 10;
class Room::RoomImpl {
public:
// This MAC address is used to generate a 'Nintendo' like Mac address.
const MacAddress NintendoOUI;
std::mt19937 random_gen; ///< Random number generator. Used for GenerateMacAddress
ENetHost* server = nullptr; ///< Network interface.
std::atomic<State> state{State::Closed}; ///< Current state of the room.
RoomInformation room_information; ///< Information about this room.
struct Member {
std::string nickname; ///< The nickname of the member.
GameInfo game_info; ///< The current game of the member
MacAddress mac_address; ///< The assigned mac address of the member.
ENetPeer* peer; ///< The remote peer.
};
using MemberList = std::vector<Member>;
MemberList members; ///< Information about the members of this room
mutable std::mutex member_mutex; ///< Mutex for locking the members list
/// This should be a std::shared_mutex as soon as C++17 is supported
RoomImpl()
: random_gen(std::random_device()()), NintendoOUI{0x00, 0x1F, 0x32, 0x00, 0x00, 0x00} {}
/// Thread that receives and dispatches network packets
std::unique_ptr<std::thread> room_thread;
/// Thread function that will receive and dispatch messages until the room is destroyed.
void ServerLoop();
void StartLoop();
/**
* Parses and answers a room join request from a client.
* Validates the uniqueness of the username and assigns the MAC address
* that the client will use for the remainder of the connection.
*/
void HandleJoinRequest(const ENetEvent* event);
/**
* Returns whether the nickname is valid, ie. isn't already taken by someone else in the room.
*/
bool IsValidNickname(const std::string& nickname) const;
/**
* Returns whether the MAC address is valid, ie. isn't already taken by someone else in the
* room.
*/
bool IsValidMacAddress(const MacAddress& address) const;
/**
* Sends a ID_ROOM_NAME_COLLISION message telling the client that the name is invalid.
*/
void SendNameCollision(ENetPeer* client);
/**
* Sends a ID_ROOM_MAC_COLLISION message telling the client that the MAC is invalid.
*/
void SendMacCollision(ENetPeer* client);
/**
* Sends a ID_ROOM_VERSION_MISMATCH message telling the client that the version is invalid.
*/
void SendVersionMismatch(ENetPeer* client);
/**
* Notifies the member that its connection attempt was successful,
* and it is now part of the room.
*/
void SendJoinSuccess(ENetPeer* client, MacAddress mac_address);
/**
* Notifies the members that the room is closed,
*/
void SendCloseMessage();
/**
* Sends the information about the room, along with the list of members
* to every connected client in the room.
* The packet has the structure:
* <MessageID>ID_ROOM_INFORMATION
* <String> room_name
* <u32> member_slots: The max number of clients allowed in this room
* <u32> num_members: the number of currently joined clients
* This is followed by the following three values for each member:
* <String> nickname of that member
* <MacAddress> mac_address of that member
* <String> game_name of that member
*/
void BroadcastRoomInformation();
/**
* Generates a free MAC address to assign to a new client.
* The first 3 bytes are the NintendoOUI 0x00, 0x1F, 0x32
*/
MacAddress GenerateMacAddress();
/**
* Broadcasts this packet to all members except the sender.
* @param event The ENet event containing the data
*/
void HandleWifiPacket(const ENetEvent* event);
/**
* Extracts a chat entry from a received ENet packet and adds it to the chat queue.
* @param event The ENet event that was received.
*/
void HandleChatPacket(const ENetEvent* event);
/**
* Extracts the game name from a received ENet packet and broadcasts it.
* @param event The ENet event that was received.
*/
void HandleGameNamePacket(const ENetEvent* event);
/**
* Removes the client from the members list if it was in it and announces the change
* to all other clients.
*/
void HandleClientDisconnection(ENetPeer* client);
};
// RoomImpl
void Room::RoomImpl::ServerLoop() {
while (state != State::Closed) {
ENetEvent event;
if (enet_host_service(server, &event, 100) > 0) {
switch (event.type) {
case ENET_EVENT_TYPE_RECEIVE:
switch (event.packet->data[0]) {
case IdJoinRequest:
HandleJoinRequest(&event);
break;
case IdSetGameInfo:
HandleGameNamePacket(&event);
break;
case IdWifiPacket:
HandleWifiPacket(&event);
break;
case IdChatMessage:
HandleChatPacket(&event);
break;
}
enet_packet_destroy(event.packet);
break;
case ENET_EVENT_TYPE_DISCONNECT:
HandleClientDisconnection(event.peer);
break;
}
}
}
// Close the connection to all members:
SendCloseMessage();
}
void Room::RoomImpl::StartLoop() {
room_thread = std::make_unique<std::thread>(&Room::RoomImpl::ServerLoop, this);
}
void Room::RoomImpl::HandleJoinRequest(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
packet.IgnoreBytes(sizeof(u8)); // Igonore the message type
std::string nickname;
packet >> nickname;
MacAddress preferred_mac;
packet >> preferred_mac;
u32 client_version;
packet >> client_version;
if (!IsValidNickname(nickname)) {
SendNameCollision(event->peer);
return;
}
if (preferred_mac != NoPreferredMac) {
// Verify if the preferred mac is available
if (!IsValidMacAddress(preferred_mac)) {
SendMacCollision(event->peer);
return;
}
} else {
// Assign a MAC address of this client automatically
preferred_mac = GenerateMacAddress();
}
if (client_version != network_version) {
SendVersionMismatch(event->peer);
return;
}
// At this point the client is ready to be added to the room.
Member member{};
member.mac_address = preferred_mac;
member.nickname = nickname;
member.peer = event->peer;
{
std::lock_guard<std::mutex> lock(member_mutex);
members.push_back(std::move(member));
}
// Notify everyone that the room information has changed.
BroadcastRoomInformation();
SendJoinSuccess(event->peer, preferred_mac);
}
bool Room::RoomImpl::IsValidNickname(const std::string& nickname) const {
// A nickname is valid if it is not already taken by anybody else in the room.
// TODO(B3N30): Check for empty names, spaces, etc.
std::lock_guard<std::mutex> lock(member_mutex);
return std::all_of(members.begin(), members.end(),
[&nickname](const auto& member) { return member.nickname != nickname; });
}
bool Room::RoomImpl::IsValidMacAddress(const MacAddress& address) const {
// A MAC address is valid if it is not already taken by anybody else in the room.
std::lock_guard<std::mutex> lock(member_mutex);
return std::all_of(members.begin(), members.end(),
[&address](const auto& member) { return member.mac_address != address; });
}
void Room::RoomImpl::SendNameCollision(ENetPeer* client) {
Packet packet;
packet << static_cast<u8>(IdNameCollision);
ENetPacket* enet_packet =
enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
enet_peer_send(client, 0, enet_packet);
enet_host_flush(server);
}
void Room::RoomImpl::SendMacCollision(ENetPeer* client) {
Packet packet;
packet << static_cast<u8>(IdMacCollision);
ENetPacket* enet_packet =
enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
enet_peer_send(client, 0, enet_packet);
enet_host_flush(server);
}
void Room::RoomImpl::SendVersionMismatch(ENetPeer* client) {
Packet packet;
packet << static_cast<u8>(IdVersionMismatch);
packet << network_version;
ENetPacket* enet_packet =
enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
enet_peer_send(client, 0, enet_packet);
enet_host_flush(server);
}
void Room::RoomImpl::SendJoinSuccess(ENetPeer* client, MacAddress mac_address) {
Packet packet;
packet << static_cast<u8>(IdJoinSuccess);
packet << mac_address;
ENetPacket* enet_packet =
enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
enet_peer_send(client, 0, enet_packet);
enet_host_flush(server);
}
void Room::RoomImpl::SendCloseMessage() {
Packet packet;
packet << static_cast<u8>(IdCloseRoom);
ENetPacket* enet_packet =
enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
std::lock_guard<std::mutex> lock(member_mutex);
for (auto& member : members) {
enet_peer_send(member.peer, 0, enet_packet);
}
enet_host_flush(server);
for (auto& member : members) {
enet_peer_disconnect(member.peer, 0);
}
}
void Room::RoomImpl::BroadcastRoomInformation() {
Packet packet;
packet << static_cast<u8>(IdRoomInformation);
packet << room_information.name;
packet << room_information.member_slots;
packet << static_cast<u32>(members.size());
{
std::lock_guard<std::mutex> lock(member_mutex);
for (const auto& member : members) {
packet << member.nickname;
packet << member.mac_address;
packet << member.game_info.name;
packet << member.game_info.id;
}
}
ENetPacket* enet_packet =
enet_packet_create(packet.GetData(), packet.GetDataSize(), ENET_PACKET_FLAG_RELIABLE);
enet_host_broadcast(server, 0, enet_packet);
enet_host_flush(server);
}
MacAddress Room::RoomImpl::GenerateMacAddress() {
MacAddress result_mac =
NintendoOUI; // The first three bytes of each MAC address will be the NintendoOUI
std::uniform_int_distribution<> dis(0x00, 0xFF); // Random byte between 0 and 0xFF
do {
for (size_t i = 3; i < result_mac.size(); ++i) {
result_mac[i] = dis(random_gen);
}
} while (!IsValidMacAddress(result_mac));
return result_mac;
}
void Room::RoomImpl::HandleWifiPacket(const ENetEvent* event) {
Packet in_packet;
in_packet.Append(event->packet->data, event->packet->dataLength);
in_packet.IgnoreBytes(sizeof(u8)); // Message type
in_packet.IgnoreBytes(sizeof(u8)); // WifiPacket Type
in_packet.IgnoreBytes(sizeof(u8)); // WifiPacket Channel
in_packet.IgnoreBytes(sizeof(MacAddress)); // WifiPacket Transmitter Address
MacAddress destination_address;
in_packet >> destination_address;
Packet out_packet;
out_packet.Append(event->packet->data, event->packet->dataLength);
ENetPacket* enet_packet = enet_packet_create(out_packet.GetData(), out_packet.GetDataSize(),
ENET_PACKET_FLAG_RELIABLE);
if (destination_address == BroadcastMac) { // Send the data to everyone except the sender
std::lock_guard<std::mutex> lock(member_mutex);
for (const auto& member : members) {
if (member.peer != event->peer)
enet_peer_send(member.peer, 0, enet_packet);
}
} else { // Send the data only to the destination client
std::lock_guard<std::mutex> lock(member_mutex);
auto member = std::find_if(members.begin(), members.end(),
[destination_address](const Member& member) -> bool {
return member.mac_address == destination_address;
});
if (member != members.end()) {
enet_peer_send(member->peer, 0, enet_packet);
}
}
enet_host_flush(server);
}
void Room::RoomImpl::HandleChatPacket(const ENetEvent* event) {
Packet in_packet;
in_packet.Append(event->packet->data, event->packet->dataLength);
in_packet.IgnoreBytes(sizeof(u8)); // Igonore the message type
std::string message;
in_packet >> message;
auto CompareNetworkAddress = [event](const Member member) -> bool {
return member.peer == event->peer;
};
std::lock_guard<std::mutex> lock(member_mutex);
const auto sending_member = std::find_if(members.begin(), members.end(), CompareNetworkAddress);
if (sending_member == members.end()) {
return; // Received a chat message from a unknown sender
}
Packet out_packet;
out_packet << static_cast<u8>(IdChatMessage);
out_packet << sending_member->nickname;
out_packet << message;
ENetPacket* enet_packet = enet_packet_create(out_packet.GetData(), out_packet.GetDataSize(),
ENET_PACKET_FLAG_RELIABLE);
for (const auto& member : members) {
if (member.peer != event->peer)
enet_peer_send(member.peer, 0, enet_packet);
}
enet_host_flush(server);
}
void Room::RoomImpl::HandleGameNamePacket(const ENetEvent* event) {
Packet in_packet;
in_packet.Append(event->packet->data, event->packet->dataLength);
in_packet.IgnoreBytes(sizeof(u8)); // Igonore the message type
GameInfo game_info;
in_packet >> game_info.name;
in_packet >> game_info.id;
{
std::lock_guard<std::mutex> lock(member_mutex);
auto member =
std::find_if(members.begin(), members.end(), [event](const Member& member) -> bool {
return member.peer == event->peer;
});
if (member != members.end()) {
member->game_info = game_info;
}
}
BroadcastRoomInformation();
}
void Room::RoomImpl::HandleClientDisconnection(ENetPeer* client) {
// Remove the client from the members list.
{
std::lock_guard<std::mutex> lock(member_mutex);
members.erase(
std::remove_if(members.begin(), members.end(),
[client](const Member& member) { return member.peer == client; }),
members.end());
}
// Announce the change to all clients.
enet_peer_disconnect(client, 0);
BroadcastRoomInformation();
}
// Room
Room::Room() : room_impl{std::make_unique<RoomImpl>()} {}
Room::~Room() = default;
void Room::Create(const std::string& name, const std::string& server_address, u16 server_port) {
ENetAddress address;
address.host = ENET_HOST_ANY;
if (!server_address.empty()) {
enet_address_set_host(&address, server_address.c_str());
}
address.port = server_port;
room_impl->server = enet_host_create(&address, MaxConcurrentConnections, NumChannels, 0, 0);
// TODO(B3N30): Allow specifying the maximum number of concurrent connections.
room_impl->state = State::Open;
room_impl->room_information.name = name;
room_impl->room_information.member_slots = MaxConcurrentConnections;
room_impl->StartLoop();
}
Room::State Room::GetState() const {
return room_impl->state;
}
const RoomInformation& Room::GetRoomInformation() const {
return room_impl->room_information;
}
std::vector<Room::Member> Room::GetRoomMemberList() const {
std::vector<Room::Member> member_list;
std::lock_guard<std::mutex> lock(room_impl->member_mutex);
for (const auto& member_impl : room_impl->members) {
Member member;
member.nickname = member_impl.nickname;
member.mac_address = member_impl.mac_address;
member.game_info = member_impl.game_info;
member_list.push_back(member);
}
return member_list;
};
void Room::Destroy() {
room_impl->state = State::Closed;
room_impl->room_thread->join();
room_impl->room_thread.reset();
if (room_impl->server) {
enet_host_destroy(room_impl->server);
}
room_impl->room_information = {};
room_impl->server = nullptr;
{
std::lock_guard<std::mutex> lock(room_impl->member_mutex);
room_impl->members.clear();
}
room_impl->room_information.member_slots = 0;
room_impl->room_information.name.clear();
}
} // namespace Network

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <memory>
#include <string>
#include <vector>
#include "common/common_types.h"
namespace Network {
constexpr u32 network_version = 1; ///< The version of this Room and RoomMember
constexpr u16 DefaultRoomPort = 1234;
constexpr size_t NumChannels = 1; // Number of channels used for the connection
struct RoomInformation {
std::string name; ///< Name of the server
u32 member_slots; ///< Maximum number of members in this room
};
struct GameInfo {
std::string name{""};
u64 id{0};
};
using MacAddress = std::array<u8, 6>;
/// A special MAC address that tells the room we're joining to assign us a MAC address
/// automatically.
constexpr MacAddress NoPreferredMac = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
// 802.11 broadcast MAC address
constexpr MacAddress BroadcastMac = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
// The different types of messages that can be sent. The first byte of each packet defines the type
enum RoomMessageTypes : u8 {
IdJoinRequest = 1,
IdJoinSuccess,
IdRoomInformation,
IdSetGameInfo,
IdWifiPacket,
IdChatMessage,
IdNameCollision,
IdMacCollision,
IdVersionMismatch,
IdCloseRoom
};
/// This is what a server [person creating a server] would use.
class Room final {
public:
enum class State : u8 {
Open, ///< The room is open and ready to accept connections.
Closed, ///< The room is not opened and can not accept connections.
};
struct Member {
std::string nickname; ///< The nickname of the member.
GameInfo game_info; ///< The current game of the member
MacAddress mac_address; ///< The assigned mac address of the member.
};
Room();
~Room();
/**
* Gets the current state of the room.
*/
State GetState() const;
/**
* Gets the room information of the room.
*/
const RoomInformation& GetRoomInformation() const;
/**
* Gets a list of the mbmers connected to the room.
*/
std::vector<Member> GetRoomMemberList() const;
/**
* Creates the socket for this room. Will bind to default address if
* server is empty string.
*/
void Create(const std::string& name, const std::string& server = "",
u16 server_port = DefaultRoomPort);
/**
* Destroys the socket
*/
void Destroy();
private:
class RoomImpl;
std::unique_ptr<RoomImpl> room_impl;
};
} // namespace Network

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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <atomic>
#include <list>
#include <mutex>
#include <set>
#include <thread>
#include "common/assert.h"
#include "enet/enet.h"
#include "network/packet.h"
#include "network/room_member.h"
namespace Network {
constexpr u32 ConnectionTimeoutMs = 5000;
class RoomMember::RoomMemberImpl {
public:
ENetHost* client = nullptr; ///< ENet network interface.
ENetPeer* server = nullptr; ///< The server peer the client is connected to
/// Information about the clients connected to the same room as us.
MemberList member_information;
/// Information about the room we're connected to.
RoomInformation room_information;
/// The current game name, id and version
GameInfo current_game_info;
std::atomic<State> state{State::Idle}; ///< Current state of the RoomMember.
void SetState(const State new_state);
bool IsConnected() const;
std::string nickname; ///< The nickname of this member.
MacAddress mac_address; ///< The mac_address of this member.
std::mutex network_mutex; ///< Mutex that controls access to the `client` variable.
/// Thread that receives and dispatches network packets
std::unique_ptr<std::thread> loop_thread;
std::mutex send_list_mutex; ///< Mutex that controls access to the `send_list` variable.
std::list<Packet> send_list; ///< A list that stores all packets to send the async
template <typename T>
using CallbackSet = std::set<CallbackHandle<T>>;
std::mutex callback_mutex; ///< The mutex used for handling callbacks
class Callbacks {
public:
template <typename T>
CallbackSet<T>& Get();
private:
CallbackSet<WifiPacket> callback_set_wifi_packet;
CallbackSet<ChatEntry> callback_set_chat_messages;
CallbackSet<RoomInformation> callback_set_room_information;
CallbackSet<State> callback_set_state;
};
Callbacks callbacks; ///< All CallbackSets to all events
void MemberLoop();
void StartLoop();
/**
* Sends data to the room. It will be send on channel 0 with flag RELIABLE
* @param packet The data to send
*/
void Send(Packet&& packet);
/**
* Sends a request to the server, asking for permission to join a room with the specified
* nickname and preferred mac.
* @params nickname The desired nickname.
* @params preferred_mac The preferred MAC address to use in the room, the NoPreferredMac tells
* the server to assign one for us.
*/
void SendJoinRequest(const std::string& nickname,
const MacAddress& preferred_mac = NoPreferredMac);
/**
* Extracts a MAC Address from a received ENet packet.
* @param event The ENet event that was received.
*/
void HandleJoinPacket(const ENetEvent* event);
/**
* Extracts RoomInformation and MemberInformation from a received RakNet packet.
* @param event The ENet event that was received.
*/
void HandleRoomInformationPacket(const ENetEvent* event);
/**
* Extracts a WifiPacket from a received ENet packet.
* @param event The ENet event that was received.
*/
void HandleWifiPackets(const ENetEvent* event);
/**
* Extracts a chat entry from a received ENet packet and adds it to the chat queue.
* @param event The ENet event that was received.
*/
void HandleChatPacket(const ENetEvent* event);
/**
* Disconnects the RoomMember from the Room
*/
void Disconnect();
template <typename T>
void Invoke(const T& data);
template <typename T>
CallbackHandle<T> Bind(std::function<void(const T&)> callback);
};
// RoomMemberImpl
void RoomMember::RoomMemberImpl::SetState(const State new_state) {
if (state != new_state) {
state = new_state;
Invoke<State>(state);
}
}
bool RoomMember::RoomMemberImpl::IsConnected() const {
return state == State::Joining || state == State::Joined;
}
void RoomMember::RoomMemberImpl::MemberLoop() {
// Receive packets while the connection is open
while (IsConnected()) {
std::lock_guard<std::mutex> lock(network_mutex);
ENetEvent event;
if (enet_host_service(client, &event, 100) > 0) {
switch (event.type) {
case ENET_EVENT_TYPE_RECEIVE:
switch (event.packet->data[0]) {
case IdWifiPacket:
HandleWifiPackets(&event);
break;
case IdChatMessage:
HandleChatPacket(&event);
break;
case IdRoomInformation:
HandleRoomInformationPacket(&event);
break;
case IdJoinSuccess:
// The join request was successful, we are now in the room.
// If we joined successfully, there must be at least one client in the room: us.
ASSERT_MSG(member_information.size() > 0,
"We have not yet received member information.");
HandleJoinPacket(&event); // Get the MAC Address for the client
SetState(State::Joined);
break;
case IdNameCollision:
SetState(State::NameCollision);
break;
case IdMacCollision:
SetState(State::MacCollision);
break;
case IdVersionMismatch:
SetState(State::WrongVersion);
break;
case IdCloseRoom:
SetState(State::LostConnection);
break;
}
enet_packet_destroy(event.packet);
break;
case ENET_EVENT_TYPE_DISCONNECT:
SetState(State::LostConnection);
break;
}
}
{
std::lock_guard<std::mutex> lock(send_list_mutex);
for (const auto& packet : send_list) {
ENetPacket* enetPacket = enet_packet_create(packet.GetData(), packet.GetDataSize(),
ENET_PACKET_FLAG_RELIABLE);
enet_peer_send(server, 0, enetPacket);
}
enet_host_flush(client);
send_list.clear();
}
}
Disconnect();
};
void RoomMember::RoomMemberImpl::StartLoop() {
loop_thread = std::make_unique<std::thread>(&RoomMember::RoomMemberImpl::MemberLoop, this);
}
void RoomMember::RoomMemberImpl::Send(Packet&& packet) {
std::lock_guard<std::mutex> lock(send_list_mutex);
send_list.push_back(std::move(packet));
}
void RoomMember::RoomMemberImpl::SendJoinRequest(const std::string& nickname,
const MacAddress& preferred_mac) {
Packet packet;
packet << static_cast<u8>(IdJoinRequest);
packet << nickname;
packet << preferred_mac;
packet << network_version;
Send(std::move(packet));
}
void RoomMember::RoomMemberImpl::HandleRoomInformationPacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8)); // Igonore the message type
RoomInformation info{};
packet >> info.name;
packet >> info.member_slots;
room_information.name = info.name;
room_information.member_slots = info.member_slots;
u32 num_members;
packet >> num_members;
member_information.resize(num_members);
for (auto& member : member_information) {
packet >> member.nickname;
packet >> member.mac_address;
packet >> member.game_info.name;
packet >> member.game_info.id;
}
Invoke(room_information);
}
void RoomMember::RoomMemberImpl::HandleJoinPacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8)); // Igonore the message type
// Parse the MAC Address from the packet
packet >> mac_address;
SetState(State::Joined);
}
void RoomMember::RoomMemberImpl::HandleWifiPackets(const ENetEvent* event) {
WifiPacket wifi_packet{};
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8)); // Igonore the message type
// Parse the WifiPacket from the packet
u8 frame_type;
packet >> frame_type;
WifiPacket::PacketType type = static_cast<WifiPacket::PacketType>(frame_type);
wifi_packet.type = type;
packet >> wifi_packet.channel;
packet >> wifi_packet.transmitter_address;
packet >> wifi_packet.destination_address;
u32 data_length;
packet >> data_length;
packet >> wifi_packet.data;
Invoke<WifiPacket>(wifi_packet);
}
void RoomMember::RoomMemberImpl::HandleChatPacket(const ENetEvent* event) {
Packet packet;
packet.Append(event->packet->data, event->packet->dataLength);
// Ignore the first byte, which is the message id.
packet.IgnoreBytes(sizeof(u8));
ChatEntry chat_entry{};
packet >> chat_entry.nickname;
packet >> chat_entry.message;
Invoke<ChatEntry>(chat_entry);
}
void RoomMember::RoomMemberImpl::Disconnect() {
member_information.clear();
room_information.member_slots = 0;
room_information.name.clear();
if (!server)
return;
enet_peer_disconnect(server, 0);
ENetEvent event;
while (enet_host_service(client, &event, ConnectionTimeoutMs) > 0) {
switch (event.type) {
case ENET_EVENT_TYPE_RECEIVE:
enet_packet_destroy(event.packet); // Ignore all incoming data
break;
case ENET_EVENT_TYPE_DISCONNECT:
server = nullptr;
return;
}
}
// didn't disconnect gracefully force disconnect
enet_peer_reset(server);
server = nullptr;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<WifiPacket>& RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_wifi_packet;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<RoomMember::State>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_state;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<RoomInformation>&
RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_room_information;
}
template <>
RoomMember::RoomMemberImpl::CallbackSet<ChatEntry>& RoomMember::RoomMemberImpl::Callbacks::Get() {
return callback_set_chat_messages;
}
template <typename T>
void RoomMember::RoomMemberImpl::Invoke(const T& data) {
std::lock_guard<std::mutex> lock(callback_mutex);
CallbackSet<T> callback_set = callbacks.Get<T>();
for (auto const& callback : callback_set)
(*callback)(data);
}
template <typename T>
RoomMember::CallbackHandle<T> RoomMember::RoomMemberImpl::Bind(
std::function<void(const T&)> callback) {
std::lock_guard<std::mutex> lock(callback_mutex);
CallbackHandle<T> handle;
handle = std::make_shared<std::function<void(const T&)>>(callback);
callbacks.Get<T>().insert(handle);
return handle;
}
// RoomMember
RoomMember::RoomMember() : room_member_impl{std::make_unique<RoomMemberImpl>()} {
room_member_impl->client = enet_host_create(nullptr, 1, NumChannels, 0, 0);
ASSERT_MSG(room_member_impl->client != nullptr, "Could not create client");
}
RoomMember::~RoomMember() {
ASSERT_MSG(!IsConnected(), "RoomMember is being destroyed while connected");
enet_host_destroy(room_member_impl->client);
}
RoomMember::State RoomMember::GetState() const {
return room_member_impl->state;
}
const RoomMember::MemberList& RoomMember::GetMemberInformation() const {
return room_member_impl->member_information;
}
const std::string& RoomMember::GetNickname() const {
return room_member_impl->nickname;
}
const MacAddress& RoomMember::GetMacAddress() const {
ASSERT_MSG(IsConnected(), "Tried to get MAC address while not connected");
return room_member_impl->mac_address;
}
RoomInformation RoomMember::GetRoomInformation() const {
return room_member_impl->room_information;
}
void RoomMember::Join(const std::string& nick, const char* server_addr, u16 server_port,
u16 client_port, const MacAddress& preferred_mac) {
// If the member is connected, kill the connection first
if (room_member_impl->loop_thread && room_member_impl->loop_thread->joinable()) {
room_member_impl->SetState(State::Error);
room_member_impl->loop_thread->join();
room_member_impl->loop_thread.reset();
}
// If the thread isn't running but the ptr still exists, reset it
else if (room_member_impl->loop_thread) {
room_member_impl->loop_thread.reset();
}
ENetAddress address{};
enet_address_set_host(&address, server_addr);
address.port = server_port;
room_member_impl->server =
enet_host_connect(room_member_impl->client, &address, NumChannels, 0);
if (!room_member_impl->server) {
room_member_impl->SetState(State::Error);
return;
}
ENetEvent event{};
int net = enet_host_service(room_member_impl->client, &event, ConnectionTimeoutMs);
if (net > 0 && event.type == ENET_EVENT_TYPE_CONNECT) {
room_member_impl->nickname = nick;
room_member_impl->SetState(State::Joining);
room_member_impl->StartLoop();
room_member_impl->SendJoinRequest(nick, preferred_mac);
SendGameInfo(room_member_impl->current_game_info);
} else {
room_member_impl->SetState(State::CouldNotConnect);
}
}
bool RoomMember::IsConnected() const {
return room_member_impl->IsConnected();
}
void RoomMember::SendWifiPacket(const WifiPacket& wifi_packet) {
Packet packet;
packet << static_cast<u8>(IdWifiPacket);
packet << static_cast<u8>(wifi_packet.type);
packet << wifi_packet.channel;
packet << wifi_packet.transmitter_address;
packet << wifi_packet.destination_address;
packet << wifi_packet.data;
room_member_impl->Send(std::move(packet));
}
void RoomMember::SendChatMessage(const std::string& message) {
Packet packet;
packet << static_cast<u8>(IdChatMessage);
packet << message;
room_member_impl->Send(std::move(packet));
}
void RoomMember::SendGameInfo(const GameInfo& game_info) {
room_member_impl->current_game_info = game_info;
if (!IsConnected())
return;
Packet packet;
packet << static_cast<u8>(IdSetGameInfo);
packet << game_info.name;
packet << game_info.id;
room_member_impl->Send(std::move(packet));
}
RoomMember::CallbackHandle<RoomMember::State> RoomMember::BindOnStateChanged(
std::function<void(const RoomMember::State&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<WifiPacket> RoomMember::BindOnWifiPacketReceived(
std::function<void(const WifiPacket&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<RoomInformation> RoomMember::BindOnRoomInformationChanged(
std::function<void(const RoomInformation&)> callback) {
return room_member_impl->Bind(callback);
}
RoomMember::CallbackHandle<ChatEntry> RoomMember::BindOnChatMessageRecieved(
std::function<void(const ChatEntry&)> callback) {
return room_member_impl->Bind(callback);
}
template <typename T>
void RoomMember::Unbind(CallbackHandle<T> handle) {
std::lock_guard<std::mutex> lock(room_member_impl->callback_mutex);
room_member_impl->callbacks.Get<T>().erase(handle);
}
void RoomMember::Leave() {
room_member_impl->SetState(State::Idle);
room_member_impl->loop_thread->join();
room_member_impl->loop_thread.reset();
}
template void RoomMember::Unbind(CallbackHandle<WifiPacket>);
template void RoomMember::Unbind(CallbackHandle<RoomMember::State>);
template void RoomMember::Unbind(CallbackHandle<RoomInformation>);
template void RoomMember::Unbind(CallbackHandle<ChatEntry>);
} // namespace Network

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@ -1,182 +0,0 @@
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <functional>
#include <memory>
#include <string>
#include <vector>
#include "common/common_types.h"
#include "network/room.h"
namespace Network {
/// Information about the received WiFi packets.
/// Acts as our own 802.11 header.
struct WifiPacket {
enum class PacketType : u8 { Beacon, Data, Authentication, AssociationResponse };
PacketType type; ///< The type of 802.11 frame.
std::vector<u8> data; ///< Raw 802.11 frame data, starting at the management frame header
/// for management frames.
MacAddress transmitter_address; ///< Mac address of the transmitter.
MacAddress destination_address; ///< Mac address of the receiver.
u8 channel; ///< WiFi channel where this frame was transmitted.
};
/// Represents a chat message.
struct ChatEntry {
std::string nickname; ///< Nickname of the client who sent this message.
std::string message; ///< Body of the message.
};
/**
* This is what a client [person joining a server] would use.
* It also has to be used if you host a game yourself (You'd create both, a Room and a
* RoomMembership for yourself)
*/
class RoomMember final {
public:
enum class State : u8 {
Idle, ///< Default state
Error, ///< Some error [permissions to network device missing or something]
Joining, ///< The client is attempting to join a room.
Joined, ///< The client is connected to the room and is ready to send/receive packets.
LostConnection, ///< Connection closed
// Reasons why connection was rejected
NameCollision, ///< Somebody is already using this name
MacCollision, ///< Somebody is already using that mac-address
WrongVersion, ///< The room version is not the same as for this RoomMember
CouldNotConnect ///< The room is not responding to a connection attempt
};
struct MemberInformation {
std::string nickname; ///< Nickname of the member.
GameInfo game_info; ///< Name of the game they're currently playing, or empty if they're
/// not playing anything.
MacAddress mac_address; ///< MAC address associated with this member.
};
using MemberList = std::vector<MemberInformation>;
// The handle for the callback functions
template <typename T>
using CallbackHandle = std::shared_ptr<std::function<void(const T&)>>;
/**
* Unbinds a callback function from the events.
* @param handle The connection handle to disconnect
*/
template <typename T>
void Unbind(CallbackHandle<T> handle);
RoomMember();
~RoomMember();
/**
* Returns the status of our connection to the room.
*/
State GetState() const;
/**
* Returns information about the members in the room we're currently connected to.
*/
const MemberList& GetMemberInformation() const;
/**
* Returns the nickname of the RoomMember.
*/
const std::string& GetNickname() const;
/**
* Returns the MAC address of the RoomMember.
*/
const MacAddress& GetMacAddress() const;
/**
* Returns information about the room we're currently connected to.
*/
RoomInformation GetRoomInformation() const;
/**
* Returns whether we're connected to a server or not.
*/
bool IsConnected() const;
/**
* Attempts to join a room at the specified address and port, using the specified nickname.
* This may fail if the username is already taken.
*/
void Join(const std::string& nickname, const char* server_addr = "127.0.0.1",
const u16 serverPort = DefaultRoomPort, const u16 clientPort = 0,
const MacAddress& preferred_mac = NoPreferredMac);
/**
* Sends a WiFi packet to the room.
* @param packet The WiFi packet to send.
*/
void SendWifiPacket(const WifiPacket& packet);
/**
* Sends a chat message to the room.
* @param message The contents of the message.
*/
void SendChatMessage(const std::string& message);
/**
* Sends the current game info to the room.
* @param game_info The game information.
*/
void SendGameInfo(const GameInfo& game_info);
/**
* Binds a function to an event that will be triggered every time the State of the member
* changed. The function wil be called every time the event is triggered. The callback function
* must not bind or unbind a function. Doing so will cause a deadlock
* @param callback The function to call
* @return A handle used for removing the function from the registered list
*/
CallbackHandle<State> BindOnStateChanged(std::function<void(const State&)> callback);
/**
* Binds a function to an event that will be triggered every time a WifiPacket is received.
* The function wil be called everytime the event is triggered.
* The callback function must not bind or unbind a function. Doing so will cause a deadlock
* @param callback The function to call
* @return A handle used for removing the function from the registered list
*/
CallbackHandle<WifiPacket> BindOnWifiPacketReceived(
std::function<void(const WifiPacket&)> callback);
/**
* Binds a function to an event that will be triggered every time the RoomInformation changes.
* The function wil be called every time the event is triggered.
* The callback function must not bind or unbind a function. Doing so will cause a deadlock
* @param callback The function to call
* @return A handle used for removing the function from the registered list
*/
CallbackHandle<RoomInformation> BindOnRoomInformationChanged(
std::function<void(const RoomInformation&)> callback);
/**
* Binds a function to an event that will be triggered every time a ChatMessage is received.
* The function wil be called every time the event is triggered.
* The callback function must not bind or unbind a function. Doing so will cause a deadlock
* @param callback The function to call
* @return A handle used for removing the function from the registered list
*/
CallbackHandle<ChatEntry> BindOnChatMessageRecieved(
std::function<void(const ChatEntry&)> callback);
/**
* Leaves the current room.
*/
void Leave();
private:
class RoomMemberImpl;
std::unique_ptr<RoomMemberImpl> room_member_impl;
};
} // namespace Network

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@ -1,16 +0,0 @@
set(SRCS
telemetry_json.cpp
verify_login.cpp
web_backend.cpp
)
set(HEADERS
telemetry_json.h
verify_login.h
web_backend.h
)
create_directory_groups(${SRCS} ${HEADERS})
add_library(web_service STATIC ${SRCS} ${HEADERS})
target_link_libraries(web_service PUBLIC common cpr json-headers)

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@ -1,86 +0,0 @@
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "web_service/telemetry_json.h"
#include "web_service/web_backend.h"
namespace WebService {
template <class T>
void TelemetryJson::Serialize(Telemetry::FieldType type, const std::string& name, T value) {
sections[static_cast<u8>(type)][name] = value;
}
void TelemetryJson::SerializeSection(Telemetry::FieldType type, const std::string& name) {
TopSection()[name] = sections[static_cast<unsigned>(type)];
}
void TelemetryJson::Visit(const Telemetry::Field<bool>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<double>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<float>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<u8>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<u16>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<u32>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<u64>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<s8>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<s16>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<s32>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<s64>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<std::string>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue());
}
void TelemetryJson::Visit(const Telemetry::Field<const char*>& field) {
Serialize(field.GetType(), field.GetName(), std::string(field.GetValue()));
}
void TelemetryJson::Visit(const Telemetry::Field<std::chrono::microseconds>& field) {
Serialize(field.GetType(), field.GetName(), field.GetValue().count());
}
void TelemetryJson::Complete() {
SerializeSection(Telemetry::FieldType::App, "App");
SerializeSection(Telemetry::FieldType::Session, "Session");
SerializeSection(Telemetry::FieldType::Performance, "Performance");
SerializeSection(Telemetry::FieldType::UserFeedback, "UserFeedback");
SerializeSection(Telemetry::FieldType::UserConfig, "UserConfig");
SerializeSection(Telemetry::FieldType::UserSystem, "UserSystem");
PostJson(endpoint_url, TopSection().dump(), true, username, token);
}
} // namespace WebService

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@ -1,59 +0,0 @@
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <array>
#include <string>
#include <json.hpp>
#include "common/telemetry.h"
namespace WebService {
/**
* Implementation of VisitorInterface that serialized telemetry into JSON, and submits it to the
* Citra web service
*/
class TelemetryJson : public Telemetry::VisitorInterface {
public:
TelemetryJson(const std::string& endpoint_url, const std::string& username,
const std::string& token)
: endpoint_url(endpoint_url), username(username), token(token) {}
~TelemetryJson() = default;
void Visit(const Telemetry::Field<bool>& field) override;
void Visit(const Telemetry::Field<double>& field) override;
void Visit(const Telemetry::Field<float>& field) override;
void Visit(const Telemetry::Field<u8>& field) override;
void Visit(const Telemetry::Field<u16>& field) override;
void Visit(const Telemetry::Field<u32>& field) override;
void Visit(const Telemetry::Field<u64>& field) override;
void Visit(const Telemetry::Field<s8>& field) override;
void Visit(const Telemetry::Field<s16>& field) override;
void Visit(const Telemetry::Field<s32>& field) override;
void Visit(const Telemetry::Field<s64>& field) override;
void Visit(const Telemetry::Field<std::string>& field) override;
void Visit(const Telemetry::Field<const char*>& field) override;
void Visit(const Telemetry::Field<std::chrono::microseconds>& field) override;
void Complete() override;
private:
nlohmann::json& TopSection() {
return sections[static_cast<u8>(Telemetry::FieldType::None)];
}
template <class T>
void Serialize(Telemetry::FieldType type, const std::string& name, T value);
void SerializeSection(Telemetry::FieldType type, const std::string& name);
nlohmann::json output;
std::array<nlohmann::json, 7> sections;
std::string endpoint_url;
std::string username;
std::string token;
};
} // namespace WebService

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@ -1,28 +0,0 @@
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <json.hpp>
#include "web_service/verify_login.h"
#include "web_service/web_backend.h"
namespace WebService {
std::future<bool> VerifyLogin(std::string& username, std::string& token,
const std::string& endpoint_url, std::function<void()> func) {
auto get_func = [func, username](const std::string& reply) -> bool {
func();
if (reply.empty())
return false;
nlohmann::json json = nlohmann::json::parse(reply);
std::string result;
try {
result = json["username"];
} catch (const nlohmann::detail::out_of_range&) {
}
return result == username;
};
return GetJson<bool>(get_func, endpoint_url, false, username, token);
}
} // namespace WebService

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@ -1,24 +0,0 @@
// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <functional>
#include <future>
#include <string>
namespace WebService {
/**
* Checks if username and token is valid
* @param username Citra username to use for authentication.
* @param token Citra token to use for authentication.
* @param endpoint_url URL of the services.citra-emu.org endpoint.
* @param func A function that gets exectued when the verification is finished
* @returns Future with bool indicating whether the verification succeeded
*/
std::future<bool> VerifyLogin(std::string& username, std::string& token,
const std::string& endpoint_url, std::function<void()> func);
} // namespace WebService

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