dolphin/Source/Core/AudioCommon/WASAPIStream.cpp

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// Copyright 2018 Dolphin Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
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#include "AudioCommon/WASAPIStream.h"
#ifdef _WIN32
// clang-format off
#include <Audioclient.h>
#include <comdef.h>
#include <mmdeviceapi.h>
#include <devpkey.h>
#include <functiondiscoverykeys_devpkey.h>
#include <wil/resource.h>
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// clang-format on
#include <thread>
#include "Common/Assert.h"
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#include "Common/Logging/Log.h"
#include "Common/StringUtil.h"
#include "Common/Thread.h"
#include "Core/ConfigManager.h"
#include "VideoCommon/OnScreenDisplay.h"
using Microsoft::WRL::ComPtr;
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WASAPIStream::WASAPIStream()
{
if (SUCCEEDED(CoInitializeEx(nullptr, COINIT_MULTITHREADED)))
m_coinitialize.activate();
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m_format.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
m_format.Format.nChannels = 2;
m_format.Format.nSamplesPerSec = GetMixer()->GetSampleRate();
m_format.Format.nAvgBytesPerSec = m_format.Format.nSamplesPerSec * 4;
m_format.Format.nBlockAlign = 4;
m_format.Format.wBitsPerSample = 16;
m_format.Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
m_format.Samples.wValidBitsPerSample = m_format.Format.wBitsPerSample;
m_format.dwChannelMask = SPEAKER_FRONT_LEFT | SPEAKER_FRONT_RIGHT;
m_format.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
}
WASAPIStream::~WASAPIStream()
{
m_running.store(false, std::memory_order_relaxed);
if (m_thread.joinable())
m_thread.join();
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}
bool WASAPIStream::isValid()
{
return true;
}
static bool HandleWinAPI(std::string_view message, HRESULT result)
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{
if (FAILED(result))
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{
std::string error;
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switch (result)
{
case AUDCLNT_E_DEVICE_IN_USE:
error = "Audio endpoint already in use!";
break;
default:
error = TStrToUTF8(_com_error(result).ErrorMessage()).c_str();
break;
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}
ERROR_LOG_FMT(AUDIO, "WASAPI: {}: {}", message, error);
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}
return SUCCEEDED(result);
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}
static void ForEachNamedDevice(const std::function<bool(ComPtr<IMMDevice>, std::string)>& callback)
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{
HRESULT result = CoInitializeEx(nullptr, COINIT_MULTITHREADED);
// RPC_E_CHANGED_MODE means that thread has COM already initialized with a different threading
// model. We don't necessarily need multithreaded model here, so don't treat this as an error
if (result != RPC_E_CHANGED_MODE && !HandleWinAPI("Failed to call CoInitialize", result))
return;
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wil::unique_couninitialize_call cleanup;
if (FAILED(result))
cleanup.release(); // CoUninitialize must be matched with each successful CoInitialize call, so
// don't call it if initialize fails
ComPtr<IMMDeviceEnumerator> enumerator;
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result = CoCreateInstance(__uuidof(MMDeviceEnumerator), nullptr, CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(enumerator.GetAddressOf()));
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if (!HandleWinAPI("Failed to create MMDeviceEnumerator", result))
return;
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ComPtr<IMMDeviceCollection> devices;
result = enumerator->EnumAudioEndpoints(eRender, DEVICE_STATE_ACTIVE, devices.GetAddressOf());
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if (!HandleWinAPI("Failed to get available devices", result))
return;
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UINT count;
devices->GetCount(&count);
for (u32 i = 0; i < count; i++)
{
ComPtr<IMMDevice> device;
devices->Item(i, device.GetAddressOf());
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if (!HandleWinAPI("Failed to get device " + std::to_string(i), result))
continue;
ComPtr<IPropertyStore> device_properties;
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result = device->OpenPropertyStore(STGM_READ, device_properties.GetAddressOf());
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if (!HandleWinAPI("Failed to initialize IPropertyStore", result))
continue;
wil::unique_prop_variant device_name;
device_properties->GetValue(PKEY_Device_FriendlyName, device_name.addressof());
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if (!callback(std::move(device), TStrToUTF8(device_name.pwszVal)))
break;
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}
}
std::vector<std::string> WASAPIStream::GetAvailableDevices()
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{
std::vector<std::string> device_names;
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ForEachNamedDevice([&device_names](ComPtr<IMMDevice>, std::string n) {
device_names.push_back(std::move(n));
return true;
});
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return device_names;
}
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ComPtr<IMMDevice> WASAPIStream::GetDeviceByName(std::string_view name)
{
ComPtr<IMMDevice> device;
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ForEachNamedDevice([&device, &name](ComPtr<IMMDevice> d, std::string n) {
if (n == name)
{
device = std::move(d);
return false;
}
return true;
});
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return device;
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}
bool WASAPIStream::Init()
{
ASSERT(m_enumerator == nullptr);
HRESULT result = CoCreateInstance(__uuidof(MMDeviceEnumerator), nullptr, CLSCTX_INPROC_SERVER,
IID_PPV_ARGS(m_enumerator.GetAddressOf()));
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if (!HandleWinAPI("Failed to create MMDeviceEnumerator", result))
return false;
return true;
}
bool WASAPIStream::SetRunning(bool running)
{
if (running)
{
ComPtr<IMMDevice> device;
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HRESULT result;
if (SConfig::GetInstance().sWASAPIDevice == "default")
{
result = m_enumerator->GetDefaultAudioEndpoint(eRender, eConsole, device.GetAddressOf());
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}
else
{
result = S_OK;
device = GetDeviceByName(SConfig::GetInstance().sWASAPIDevice);
if (!device)
{
ERROR_LOG_FMT(AUDIO, "Can't find device '{}', falling back to default",
SConfig::GetInstance().sWASAPIDevice);
result = m_enumerator->GetDefaultAudioEndpoint(eRender, eConsole, device.GetAddressOf());
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}
}
if (!HandleWinAPI("Failed to obtain default endpoint", result))
return false;
// Show a friendly name in the log
ComPtr<IPropertyStore> device_properties;
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result = device->OpenPropertyStore(STGM_READ, device_properties.GetAddressOf());
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if (!HandleWinAPI("Failed to initialize IPropertyStore", result))
return false;
wil::unique_prop_variant device_name;
device_properties->GetValue(PKEY_Device_FriendlyName, device_name.addressof());
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INFO_LOG_FMT(AUDIO, "Using audio endpoint '{}'", TStrToUTF8(device_name.pwszVal));
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ComPtr<IAudioClient> audio_client;
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// Get IAudioDevice
result = device->Activate(__uuidof(IAudioClient), CLSCTX_INPROC_SERVER, nullptr,
reinterpret_cast<LPVOID*>(audio_client.GetAddressOf()));
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if (!HandleWinAPI("Failed to activate IAudioClient", result))
return false;
REFERENCE_TIME device_period = 0;
result = audio_client->GetDevicePeriod(nullptr, &device_period);
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device_period += SConfig::GetInstance().iLatency * (10000 / m_format.Format.nChannels);
INFO_LOG_FMT(AUDIO, "Audio period set to {}", device_period);
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if (!HandleWinAPI("Failed to obtain device period", result))
return false;
result = audio_client->Initialize(
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AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST, device_period,
device_period, reinterpret_cast<WAVEFORMATEX*>(&m_format), nullptr);
if (result == AUDCLNT_E_UNSUPPORTED_FORMAT)
{
OSD::AddMessage("Your current audio device doesn't support 16-bit 48000 hz PCM audio. WASAPI "
"exclusive mode won't work.",
6000U);
return false;
}
if (result == AUDCLNT_E_BUFFER_SIZE_NOT_ALIGNED)
{
result = audio_client->GetBufferSize(&m_frames_in_buffer);
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if (!HandleWinAPI("Failed to get aligned buffer size", result))
return false;
// Get IAudioDevice
result = device->Activate(__uuidof(IAudioClient), CLSCTX_INPROC_SERVER, nullptr,
reinterpret_cast<LPVOID*>(audio_client.ReleaseAndGetAddressOf()));
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if (!HandleWinAPI("Failed to reactivate IAudioClient", result))
return false;
device_period =
static_cast<REFERENCE_TIME>(
10000.0 * 1000 * m_frames_in_buffer / m_format.Format.nSamplesPerSec + 0.5) +
SConfig::GetInstance().iLatency * 10000;
result = audio_client->Initialize(
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AUDCLNT_SHAREMODE_EXCLUSIVE,
AUDCLNT_STREAMFLAGS_EVENTCALLBACK | AUDCLNT_STREAMFLAGS_NOPERSIST, device_period,
device_period, reinterpret_cast<WAVEFORMATEX*>(&m_format), nullptr);
}
if (!HandleWinAPI("Failed to initialize IAudioClient", result))
return false;
result = audio_client->GetBufferSize(&m_frames_in_buffer);
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if (!HandleWinAPI("Failed to get buffer size from IAudioClient", result))
return false;
ComPtr<IAudioRenderClient> audio_renderer;
result = audio_client->GetService(IID_PPV_ARGS(audio_renderer.GetAddressOf()));
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if (!HandleWinAPI("Failed to get IAudioRenderClient from IAudioClient", result))
return false;
wil::unique_event_nothrow need_data_event;
need_data_event.create();
audio_client->SetEventHandle(need_data_event.get());
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result = audio_client->Start();
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if (!HandleWinAPI("Failed to get IAudioRenderClient from IAudioClient", result))
return false;
INFO_LOG_FMT(AUDIO, "WASAPI: Successfully initialized!");
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// "Commit" audio client and audio renderer now
m_audio_client = std::move(audio_client);
m_audio_renderer = std::move(audio_renderer);
m_need_data_event = std::move(need_data_event);
m_running.store(true, std::memory_order_relaxed);
m_thread = std::thread(&WASAPIStream::SoundLoop, this);
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}
else
{
m_running.store(false, std::memory_order_relaxed);
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if (m_thread.joinable())
m_thread.join();
m_need_data_event.reset();
m_audio_renderer.Reset();
m_audio_client.Reset();
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}
return true;
}
void WASAPIStream::SoundLoop()
{
Common::SetCurrentThreadName("WASAPI Handler");
BYTE* data;
m_audio_renderer->GetBuffer(m_frames_in_buffer, &data);
m_audio_renderer->ReleaseBuffer(m_frames_in_buffer, AUDCLNT_BUFFERFLAGS_SILENT);
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while (m_running.load(std::memory_order_relaxed))
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{
WaitForSingleObject(m_need_data_event.get(), 1000);
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m_audio_renderer->GetBuffer(m_frames_in_buffer, &data);
s16* audio_data = reinterpret_cast<s16*>(data);
GetMixer()->Mix(audio_data, m_frames_in_buffer);
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const SConfig& config = SConfig::GetInstance();
const bool is_muted = config.m_IsMuted || config.m_Volume == 0;
const bool need_volume_adjustment = config.m_Volume != 100 && !is_muted;
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if (need_volume_adjustment)
{
const float volume = config.m_Volume / 100.0f;
for (u32 i = 0; i < m_frames_in_buffer * 2; i++)
*audio_data++ *= volume;
}
m_audio_renderer->ReleaseBuffer(m_frames_in_buffer, is_muted ? AUDCLNT_BUFFERFLAGS_SILENT : 0);
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}
}
#endif // _WIN32