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Diffstat (limited to 'alc/backends/wasapi.cpp')
| -rw-r--r-- | alc/backends/wasapi.cpp | 1750 |
1 files changed, 1750 insertions, 0 deletions
diff --git a/alc/backends/wasapi.cpp b/alc/backends/wasapi.cpp new file mode 100644 index 00000000..37a547af --- /dev/null +++ b/alc/backends/wasapi.cpp @@ -0,0 +1,1750 @@ +/** + * OpenAL cross platform audio library + * Copyright (C) 2011 by authors. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Library General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Library General Public License for more details. + * + * You should have received a copy of the GNU Library General Public + * License along with this library; if not, write to the + * Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + * Or go to http://www.gnu.org/copyleft/lgpl.html + */ + +#include "config.h" + +#include "backends/wasapi.h" + +#define WIN32_LEAN_AND_MEAN +#include <windows.h> + +#include <stdlib.h> +#include <stdio.h> +#include <memory.h> + +#include <wtypes.h> +#include <mmdeviceapi.h> +#include <audioclient.h> +#include <cguid.h> +#include <devpropdef.h> +#include <mmreg.h> +#include <propsys.h> +#include <propkey.h> +#include <devpkey.h> +#ifndef _WAVEFORMATEXTENSIBLE_ +#include <ks.h> +#include <ksmedia.h> +#endif + +#include <deque> +#include <mutex> +#include <atomic> +#include <thread> +#include <vector> +#include <string> +#include <future> +#include <algorithm> +#include <functional> +#include <condition_variable> + +#include "alcmain.h" +#include "alexcpt.h" +#include "alu.h" +#include "ringbuffer.h" +#include "compat.h" +#include "converter.h" +#include "strutils.h" +#include "threads.h" + + +/* Some headers seem to define these as macros for __uuidof, which is annoying + * since some headers don't declare them at all. Hopefully the ifdef is enough + * to tell if they need to be declared. + */ +#ifndef KSDATAFORMAT_SUBTYPE_PCM +DEFINE_GUID(KSDATAFORMAT_SUBTYPE_PCM, 0x00000001, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71); +#endif +#ifndef KSDATAFORMAT_SUBTYPE_IEEE_FLOAT +DEFINE_GUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, 0x00000003, 0x0000, 0x0010, 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71); +#endif + +DEFINE_DEVPROPKEY(DEVPKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80,0x20, 0x67,0xd1,0x46,0xa8,0x50,0xe0, 14); +DEFINE_PROPERTYKEY(PKEY_AudioEndpoint_FormFactor, 0x1da5d803, 0xd492, 0x4edd, 0x8c,0x23, 0xe0,0xc0,0xff,0xee,0x7f,0x0e, 0); +DEFINE_PROPERTYKEY(PKEY_AudioEndpoint_GUID, 0x1da5d803, 0xd492, 0x4edd, 0x8c, 0x23,0xe0, 0xc0,0xff,0xee,0x7f,0x0e, 4 ); + + +namespace { + +inline constexpr REFERENCE_TIME operator "" _reftime(unsigned long long int n) noexcept +{ return static_cast<REFERENCE_TIME>(n); } + +#define MONO SPEAKER_FRONT_CENTER +#define STEREO (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT) +#define QUAD (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT) +#define X5DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT) +#define X5DOT1REAR (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT) +#define X6DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_CENTER|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT) +#define X7DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT) +#define X7DOT1_WIDE (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT|SPEAKER_FRONT_LEFT_OF_CENTER|SPEAKER_FRONT_RIGHT_OF_CENTER) + +#define REFTIME_PER_SEC 10000000_reftime + +#define DEVNAME_HEAD "OpenAL Soft on " + + +/* Scales the given value using 64-bit integer math, ceiling the result. */ +inline int64_t ScaleCeil(int64_t val, int64_t new_scale, int64_t old_scale) +{ + return (val*new_scale + old_scale-1) / old_scale; +} + + +struct PropVariant { + PROPVARIANT mProp; + +public: + PropVariant() { PropVariantInit(&mProp); } + ~PropVariant() { clear(); } + + void clear() { PropVariantClear(&mProp); } + + PROPVARIANT* get() noexcept { return &mProp; } + + PROPVARIANT& operator*() noexcept { return mProp; } + const PROPVARIANT& operator*() const noexcept { return mProp; } + + PROPVARIANT* operator->() noexcept { return &mProp; } + const PROPVARIANT* operator->() const noexcept { return &mProp; } +}; + +struct DevMap { + std::string name; + std::string endpoint_guid; // obtained from PKEY_AudioEndpoint_GUID , set to "Unknown device GUID" if absent. + std::wstring devid; + + template<typename T0, typename T1, typename T2> + DevMap(T0&& name_, T1&& guid_, T2&& devid_) + : name{std::forward<T0>(name_)} + , endpoint_guid{std::forward<T1>(guid_)} + , devid{std::forward<T2>(devid_)} + { } +}; + +bool checkName(const al::vector<DevMap> &list, const std::string &name) +{ + return std::find_if(list.cbegin(), list.cend(), + [&name](const DevMap &entry) -> bool + { return entry.name == name; } + ) != list.cend(); +} + +al::vector<DevMap> PlaybackDevices; +al::vector<DevMap> CaptureDevices; + + +using NameGUIDPair = std::pair<std::string,std::string>; +NameGUIDPair get_device_name_and_guid(IMMDevice *device) +{ + std::string name{DEVNAME_HEAD}; + std::string guid; + + IPropertyStore *ps; + HRESULT hr = device->OpenPropertyStore(STGM_READ, &ps); + if(FAILED(hr)) + { + WARN("OpenPropertyStore failed: 0x%08lx\n", hr); + return { name+"Unknown Device Name", "Unknown Device GUID" }; + } + + PropVariant pvprop; + hr = ps->GetValue(reinterpret_cast<const PROPERTYKEY&>(DEVPKEY_Device_FriendlyName), pvprop.get()); + if(FAILED(hr)) + { + WARN("GetValue Device_FriendlyName failed: 0x%08lx\n", hr); + name += "Unknown Device Name"; + } + else if(pvprop->vt == VT_LPWSTR) + name += wstr_to_utf8(pvprop->pwszVal); + else + { + WARN("Unexpected PROPVARIANT type: 0x%04x\n", pvprop->vt); + name += "Unknown Device Name"; + } + + pvprop.clear(); + hr = ps->GetValue(reinterpret_cast<const PROPERTYKEY&>(PKEY_AudioEndpoint_GUID), pvprop.get()); + if(FAILED(hr)) + { + WARN("GetValue AudioEndpoint_GUID failed: 0x%08lx\n", hr); + guid = "Unknown Device GUID"; + } + else if(pvprop->vt == VT_LPWSTR) + guid = wstr_to_utf8(pvprop->pwszVal); + else + { + WARN("Unexpected PROPVARIANT type: 0x%04x\n", pvprop->vt); + guid = "Unknown Device GUID"; + } + + ps->Release(); + + return {name, guid}; +} + +void get_device_formfactor(IMMDevice *device, EndpointFormFactor *formfactor) +{ + IPropertyStore *ps; + HRESULT hr = device->OpenPropertyStore(STGM_READ, &ps); + if(FAILED(hr)) + { + WARN("OpenPropertyStore failed: 0x%08lx\n", hr); + return; + } + + PropVariant pvform; + hr = ps->GetValue(reinterpret_cast<const PROPERTYKEY&>(PKEY_AudioEndpoint_FormFactor), pvform.get()); + if(FAILED(hr)) + WARN("GetValue AudioEndpoint_FormFactor failed: 0x%08lx\n", hr); + else if(pvform->vt == VT_UI4) + *formfactor = static_cast<EndpointFormFactor>(pvform->ulVal); + else if(pvform->vt == VT_EMPTY) + *formfactor = UnknownFormFactor; + else + WARN("Unexpected PROPVARIANT type: 0x%04x\n", pvform->vt); + + ps->Release(); +} + + +void add_device(IMMDevice *device, const WCHAR *devid, al::vector<DevMap> &list) +{ + std::string basename, guidstr; + std::tie(basename, guidstr) = get_device_name_and_guid(device); + + int count{1}; + std::string newname{basename}; + while(checkName(list, newname)) + { + newname = basename; + newname += " #"; + newname += std::to_string(++count); + } + list.emplace_back(std::move(newname), std::move(guidstr), devid); + const DevMap &newentry = list.back(); + + TRACE("Got device \"%s\", \"%s\", \"%ls\"\n", newentry.name.c_str(), + newentry.endpoint_guid.c_str(), newentry.devid.c_str()); +} + +WCHAR *get_device_id(IMMDevice *device) +{ + WCHAR *devid; + + HRESULT hr = device->GetId(&devid); + if(FAILED(hr)) + { + ERR("Failed to get device id: %lx\n", hr); + return nullptr; + } + + return devid; +} + +HRESULT probe_devices(IMMDeviceEnumerator *devenum, EDataFlow flowdir, al::vector<DevMap> &list) +{ + IMMDeviceCollection *coll; + HRESULT hr{devenum->EnumAudioEndpoints(flowdir, DEVICE_STATE_ACTIVE, &coll)}; + if(FAILED(hr)) + { + ERR("Failed to enumerate audio endpoints: 0x%08lx\n", hr); + return hr; + } + + IMMDevice *defdev{nullptr}; + WCHAR *defdevid{nullptr}; + UINT count{0}; + hr = coll->GetCount(&count); + if(SUCCEEDED(hr) && count > 0) + { + list.clear(); + list.reserve(count); + + hr = devenum->GetDefaultAudioEndpoint(flowdir, eMultimedia, &defdev); + } + if(SUCCEEDED(hr) && defdev != nullptr) + { + defdevid = get_device_id(defdev); + if(defdevid) + add_device(defdev, defdevid, list); + } + + for(UINT i{0};i < count;++i) + { + IMMDevice *device; + hr = coll->Item(i, &device); + if(FAILED(hr)) continue; + + WCHAR *devid{get_device_id(device)}; + if(devid) + { + if(!defdevid || wcscmp(devid, defdevid) != 0) + add_device(device, devid, list); + CoTaskMemFree(devid); + } + device->Release(); + } + + if(defdev) defdev->Release(); + if(defdevid) CoTaskMemFree(defdevid); + coll->Release(); + + return S_OK; +} + + +bool MakeExtensible(WAVEFORMATEXTENSIBLE *out, const WAVEFORMATEX *in) +{ + *out = WAVEFORMATEXTENSIBLE{}; + if(in->wFormatTag == WAVE_FORMAT_EXTENSIBLE) + { + *out = *CONTAINING_RECORD(in, const WAVEFORMATEXTENSIBLE, Format); + out->Format.cbSize = sizeof(*out) - sizeof(out->Format); + } + else if(in->wFormatTag == WAVE_FORMAT_PCM) + { + out->Format = *in; + out->Format.cbSize = 0; + out->Samples.wValidBitsPerSample = out->Format.wBitsPerSample; + if(out->Format.nChannels == 1) + out->dwChannelMask = MONO; + else if(out->Format.nChannels == 2) + out->dwChannelMask = STEREO; + else + ERR("Unhandled PCM channel count: %d\n", out->Format.nChannels); + out->SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + } + else if(in->wFormatTag == WAVE_FORMAT_IEEE_FLOAT) + { + out->Format = *in; + out->Format.cbSize = 0; + out->Samples.wValidBitsPerSample = out->Format.wBitsPerSample; + if(out->Format.nChannels == 1) + out->dwChannelMask = MONO; + else if(out->Format.nChannels == 2) + out->dwChannelMask = STEREO; + else + ERR("Unhandled IEEE float channel count: %d\n", out->Format.nChannels); + out->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT; + } + else + { + ERR("Unhandled format tag: 0x%04x\n", in->wFormatTag); + return false; + } + return true; +} + +void TraceFormat(const char *msg, const WAVEFORMATEX *format) +{ + constexpr size_t fmtex_extra_size{sizeof(WAVEFORMATEXTENSIBLE)-sizeof(WAVEFORMATEX)}; + if(format->wFormatTag == WAVE_FORMAT_EXTENSIBLE && format->cbSize >= fmtex_extra_size) + { + class GuidPrinter { + char mMsg[64]; + + public: + GuidPrinter(const GUID &guid) + { + std::snprintf(mMsg, al::size(mMsg), + "{%08lx-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}", + DWORD{guid.Data1}, guid.Data2, guid.Data3, + guid.Data4[0], guid.Data4[1], guid.Data4[2], guid.Data4[3], + guid.Data4[4], guid.Data4[5], guid.Data4[6], guid.Data4[7]); + } + const char *c_str() const { return mMsg; } + }; + + const WAVEFORMATEXTENSIBLE *fmtex{ + CONTAINING_RECORD(format, const WAVEFORMATEXTENSIBLE, Format)}; + TRACE("%s:\n" + " FormatTag = 0x%04x\n" + " Channels = %d\n" + " SamplesPerSec = %lu\n" + " AvgBytesPerSec = %lu\n" + " BlockAlign = %d\n" + " BitsPerSample = %d\n" + " Size = %d\n" + " Samples = %d\n" + " ChannelMask = 0x%lx\n" + " SubFormat = %s\n", + msg, fmtex->Format.wFormatTag, fmtex->Format.nChannels, fmtex->Format.nSamplesPerSec, + fmtex->Format.nAvgBytesPerSec, fmtex->Format.nBlockAlign, fmtex->Format.wBitsPerSample, + fmtex->Format.cbSize, fmtex->Samples.wReserved, fmtex->dwChannelMask, + GuidPrinter{fmtex->SubFormat}.c_str()); + } + else + TRACE("%s:\n" + " FormatTag = 0x%04x\n" + " Channels = %d\n" + " SamplesPerSec = %lu\n" + " AvgBytesPerSec = %lu\n" + " BlockAlign = %d\n" + " BitsPerSample = %d\n" + " Size = %d\n", + msg, format->wFormatTag, format->nChannels, format->nSamplesPerSec, + format->nAvgBytesPerSec, format->nBlockAlign, format->wBitsPerSample, format->cbSize); +} + + +enum class MsgType { + OpenDevice, + ResetDevice, + StartDevice, + StopDevice, + CloseDevice, + EnumeratePlayback, + EnumerateCapture, + QuitThread, + + Count +}; + +constexpr char MessageStr[static_cast<size_t>(MsgType::Count)][20]{ + "Open Device", + "Reset Device", + "Start Device", + "Stop Device", + "Close Device", + "Enumerate Playback", + "Enumerate Capture", + "Quit" +}; + + +/* Proxy interface used by the message handler. */ +struct WasapiProxy { + virtual ~WasapiProxy() = default; + + virtual HRESULT openProxy() = 0; + virtual void closeProxy() = 0; + + virtual HRESULT resetProxy() = 0; + virtual HRESULT startProxy() = 0; + virtual void stopProxy() = 0; + + struct Msg { + MsgType mType; + WasapiProxy *mProxy; + std::promise<HRESULT> mPromise; + }; + static std::deque<Msg> mMsgQueue; + static std::mutex mMsgQueueLock; + static std::condition_variable mMsgQueueCond; + + std::future<HRESULT> pushMessage(MsgType type) + { + std::promise<HRESULT> promise; + std::future<HRESULT> future{promise.get_future()}; + { std::lock_guard<std::mutex> _{mMsgQueueLock}; + mMsgQueue.emplace_back(Msg{type, this, std::move(promise)}); + } + mMsgQueueCond.notify_one(); + return future; + } + + static std::future<HRESULT> pushMessageStatic(MsgType type) + { + std::promise<HRESULT> promise; + std::future<HRESULT> future{promise.get_future()}; + { std::lock_guard<std::mutex> _{mMsgQueueLock}; + mMsgQueue.emplace_back(Msg{type, nullptr, std::move(promise)}); + } + mMsgQueueCond.notify_one(); + return future; + } + + static bool popMessage(Msg &msg) + { + std::unique_lock<std::mutex> lock{mMsgQueueLock}; + while(mMsgQueue.empty()) + mMsgQueueCond.wait(lock); + msg = std::move(mMsgQueue.front()); + mMsgQueue.pop_front(); + return msg.mType != MsgType::QuitThread; + } + + static int messageHandler(std::promise<HRESULT> *promise); +}; +std::deque<WasapiProxy::Msg> WasapiProxy::mMsgQueue; +std::mutex WasapiProxy::mMsgQueueLock; +std::condition_variable WasapiProxy::mMsgQueueCond; + +int WasapiProxy::messageHandler(std::promise<HRESULT> *promise) +{ + TRACE("Starting message thread\n"); + + HRESULT cohr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); + if(FAILED(cohr)) + { + WARN("Failed to initialize COM: 0x%08lx\n", cohr); + promise->set_value(cohr); + return 0; + } + + void *ptr{}; + HRESULT hr{CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_INPROC_SERVER, + IID_IMMDeviceEnumerator, &ptr)}; + if(FAILED(hr)) + { + WARN("Failed to create IMMDeviceEnumerator instance: 0x%08lx\n", hr); + promise->set_value(hr); + CoUninitialize(); + return 0; + } + auto Enumerator = static_cast<IMMDeviceEnumerator*>(ptr); + Enumerator->Release(); + Enumerator = nullptr; + CoUninitialize(); + + TRACE("Message thread initialization complete\n"); + promise->set_value(S_OK); + promise = nullptr; + + TRACE("Starting message loop\n"); + ALuint deviceCount{0}; + Msg msg; + while(popMessage(msg)) + { + TRACE("Got message \"%s\" (0x%04x, this=%p)\n", + MessageStr[static_cast<size_t>(msg.mType)], static_cast<int>(msg.mType), + decltype(std::declval<void*>()){msg.mProxy}); + + switch(msg.mType) + { + case MsgType::OpenDevice: + hr = cohr = S_OK; + if(++deviceCount == 1) + hr = cohr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); + if(SUCCEEDED(hr)) + hr = msg.mProxy->openProxy(); + msg.mPromise.set_value(hr); + + if(FAILED(hr)) + { + if(--deviceCount == 0 && SUCCEEDED(cohr)) + CoUninitialize(); + } + continue; + + case MsgType::ResetDevice: + hr = msg.mProxy->resetProxy(); + msg.mPromise.set_value(hr); + continue; + + case MsgType::StartDevice: + hr = msg.mProxy->startProxy(); + msg.mPromise.set_value(hr); + continue; + + case MsgType::StopDevice: + msg.mProxy->stopProxy(); + msg.mPromise.set_value(S_OK); + continue; + + case MsgType::CloseDevice: + msg.mProxy->closeProxy(); + msg.mPromise.set_value(S_OK); + + if(--deviceCount == 0) + CoUninitialize(); + continue; + + case MsgType::EnumeratePlayback: + case MsgType::EnumerateCapture: + hr = cohr = S_OK; + if(++deviceCount == 1) + hr = cohr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); + if(SUCCEEDED(hr)) + hr = CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_INPROC_SERVER, IID_IMMDeviceEnumerator, &ptr); + if(FAILED(hr)) + msg.mPromise.set_value(hr); + else + { + Enumerator = static_cast<IMMDeviceEnumerator*>(ptr); + + if(msg.mType == MsgType::EnumeratePlayback) + hr = probe_devices(Enumerator, eRender, PlaybackDevices); + else if(msg.mType == MsgType::EnumerateCapture) + hr = probe_devices(Enumerator, eCapture, CaptureDevices); + msg.mPromise.set_value(hr); + + Enumerator->Release(); + Enumerator = nullptr; + } + + if(--deviceCount == 0 && SUCCEEDED(cohr)) + CoUninitialize(); + continue; + + default: + ERR("Unexpected message: %u\n", static_cast<unsigned int>(msg.mType)); + msg.mPromise.set_value(E_FAIL); + continue; + } + } + TRACE("Message loop finished\n"); + + return 0; +} + + +struct WasapiPlayback final : public BackendBase, WasapiProxy { + WasapiPlayback(ALCdevice *device) noexcept : BackendBase{device} { } + ~WasapiPlayback() override; + + int mixerProc(); + + void open(const ALCchar *name) override; + HRESULT openProxy() override; + void closeProxy() override; + + bool reset() override; + HRESULT resetProxy() override; + bool start() override; + HRESULT startProxy() override; + void stop() override; + void stopProxy() override; + + ClockLatency getClockLatency() override; + + std::wstring mDevId; + + IMMDevice *mMMDev{nullptr}; + IAudioClient *mClient{nullptr}; + IAudioRenderClient *mRender{nullptr}; + HANDLE mNotifyEvent{nullptr}; + + std::atomic<UINT32> mPadding{0u}; + + std::atomic<bool> mKillNow{true}; + std::thread mThread; + + DEF_NEWDEL(WasapiPlayback) +}; + +WasapiPlayback::~WasapiPlayback() +{ + pushMessage(MsgType::CloseDevice).wait(); + + if(mNotifyEvent != nullptr) + CloseHandle(mNotifyEvent); + mNotifyEvent = nullptr; +} + + +FORCE_ALIGN int WasapiPlayback::mixerProc() +{ + HRESULT hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); + if(FAILED(hr)) + { + ERR("CoInitializeEx(nullptr, COINIT_MULTITHREADED) failed: 0x%08lx\n", hr); + aluHandleDisconnect(mDevice, "COM init failed: 0x%08lx", hr); + return 1; + } + + SetRTPriority(); + althrd_setname(MIXER_THREAD_NAME); + + const ALuint update_size{mDevice->UpdateSize}; + const UINT32 buffer_len{mDevice->BufferSize}; + while(!mKillNow.load(std::memory_order_relaxed)) + { + UINT32 written; + hr = mClient->GetCurrentPadding(&written); + if(FAILED(hr)) + { + ERR("Failed to get padding: 0x%08lx\n", hr); + aluHandleDisconnect(mDevice, "Failed to retrieve buffer padding: 0x%08lx", hr); + break; + } + mPadding.store(written, std::memory_order_relaxed); + + ALuint len{buffer_len - written}; + if(len < update_size) + { + DWORD res{WaitForSingleObjectEx(mNotifyEvent, 2000, FALSE)}; + if(res != WAIT_OBJECT_0) + ERR("WaitForSingleObjectEx error: 0x%lx\n", res); + continue; + } + + BYTE *buffer; + hr = mRender->GetBuffer(len, &buffer); + if(SUCCEEDED(hr)) + { + std::unique_lock<WasapiPlayback> dlock{*this}; + aluMixData(mDevice, buffer, len); + mPadding.store(written + len, std::memory_order_relaxed); + dlock.unlock(); + hr = mRender->ReleaseBuffer(len, 0); + } + if(FAILED(hr)) + { + ERR("Failed to buffer data: 0x%08lx\n", hr); + aluHandleDisconnect(mDevice, "Failed to send playback samples: 0x%08lx", hr); + break; + } + } + mPadding.store(0u, std::memory_order_release); + + CoUninitialize(); + return 0; +} + + +void WasapiPlayback::open(const ALCchar *name) +{ + HRESULT hr{S_OK}; + + mNotifyEvent = CreateEventW(nullptr, FALSE, FALSE, nullptr); + if(mNotifyEvent == nullptr) + { + ERR("Failed to create notify events: %lu\n", GetLastError()); + hr = E_FAIL; + } + + if(SUCCEEDED(hr)) + { + if(name) + { + if(PlaybackDevices.empty()) + pushMessage(MsgType::EnumeratePlayback).wait(); + + hr = E_FAIL; + auto iter = std::find_if(PlaybackDevices.cbegin(), PlaybackDevices.cend(), + [name](const DevMap &entry) -> bool + { return entry.name == name || entry.endpoint_guid == name; } + ); + if(iter == PlaybackDevices.cend()) + { + std::wstring wname{utf8_to_wstr(name)}; + iter = std::find_if(PlaybackDevices.cbegin(), PlaybackDevices.cend(), + [&wname](const DevMap &entry) -> bool + { return entry.devid == wname; } + ); + } + if(iter == PlaybackDevices.cend()) + WARN("Failed to find device name matching \"%s\"\n", name); + else + { + mDevId = iter->devid; + mDevice->DeviceName = iter->name; + hr = S_OK; + } + } + } + + if(SUCCEEDED(hr)) + hr = pushMessage(MsgType::OpenDevice).get(); + + if(FAILED(hr)) + { + if(mNotifyEvent != nullptr) + CloseHandle(mNotifyEvent); + mNotifyEvent = nullptr; + + mDevId.clear(); + + throw al::backend_exception{ALC_INVALID_VALUE, "Device init failed: 0x%08lx", hr}; + } +} + +HRESULT WasapiPlayback::openProxy() +{ + void *ptr; + HRESULT hr{CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_INPROC_SERVER, IID_IMMDeviceEnumerator, &ptr)}; + if(SUCCEEDED(hr)) + { + auto Enumerator = static_cast<IMMDeviceEnumerator*>(ptr); + if(mDevId.empty()) + hr = Enumerator->GetDefaultAudioEndpoint(eRender, eMultimedia, &mMMDev); + else + hr = Enumerator->GetDevice(mDevId.c_str(), &mMMDev); + Enumerator->Release(); + } + if(SUCCEEDED(hr)) + hr = mMMDev->Activate(IID_IAudioClient, CLSCTX_INPROC_SERVER, nullptr, &ptr); + if(SUCCEEDED(hr)) + { + mClient = static_cast<IAudioClient*>(ptr); + if(mDevice->DeviceName.empty()) + mDevice->DeviceName = get_device_name_and_guid(mMMDev).first; + } + + if(FAILED(hr)) + { + if(mMMDev) + mMMDev->Release(); + mMMDev = nullptr; + } + + return hr; +} + +void WasapiPlayback::closeProxy() +{ + if(mClient) + mClient->Release(); + mClient = nullptr; + + if(mMMDev) + mMMDev->Release(); + mMMDev = nullptr; +} + + +bool WasapiPlayback::reset() +{ + HRESULT hr{pushMessage(MsgType::ResetDevice).get()}; + if(FAILED(hr)) + throw al::backend_exception{ALC_INVALID_VALUE, "0x%08lx", hr}; + return true; +} + +HRESULT WasapiPlayback::resetProxy() +{ + if(mClient) + mClient->Release(); + mClient = nullptr; + + void *ptr; + HRESULT hr = mMMDev->Activate(IID_IAudioClient, CLSCTX_INPROC_SERVER, nullptr, &ptr); + if(FAILED(hr)) + { + ERR("Failed to reactivate audio client: 0x%08lx\n", hr); + return hr; + } + mClient = static_cast<IAudioClient*>(ptr); + + WAVEFORMATEX *wfx; + hr = mClient->GetMixFormat(&wfx); + if(FAILED(hr)) + { + ERR("Failed to get mix format: 0x%08lx\n", hr); + return hr; + } + + WAVEFORMATEXTENSIBLE OutputType; + if(!MakeExtensible(&OutputType, wfx)) + { + CoTaskMemFree(wfx); + return E_FAIL; + } + CoTaskMemFree(wfx); + wfx = nullptr; + + const REFERENCE_TIME per_time{mDevice->UpdateSize * REFTIME_PER_SEC / mDevice->Frequency}; + const REFERENCE_TIME buf_time{mDevice->BufferSize * REFTIME_PER_SEC / mDevice->Frequency}; + + if(!mDevice->Flags.get<FrequencyRequest>()) + mDevice->Frequency = OutputType.Format.nSamplesPerSec; + if(!mDevice->Flags.get<ChannelsRequest>()) + { + if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO) + mDevice->FmtChans = DevFmtMono; + else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO) + mDevice->FmtChans = DevFmtStereo; + else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD) + mDevice->FmtChans = DevFmtQuad; + else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1) + mDevice->FmtChans = DevFmtX51; + else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1REAR) + mDevice->FmtChans = DevFmtX51Rear; + else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1) + mDevice->FmtChans = DevFmtX61; + else if(OutputType.Format.nChannels == 8 && (OutputType.dwChannelMask == X7DOT1 || OutputType.dwChannelMask == X7DOT1_WIDE)) + mDevice->FmtChans = DevFmtX71; + else + ERR("Unhandled channel config: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask); + } + + OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; + switch(mDevice->FmtChans) + { + case DevFmtMono: + OutputType.Format.nChannels = 1; + OutputType.dwChannelMask = MONO; + break; + case DevFmtAmbi3D: + mDevice->FmtChans = DevFmtStereo; + /*fall-through*/ + case DevFmtStereo: + OutputType.Format.nChannels = 2; + OutputType.dwChannelMask = STEREO; + break; + case DevFmtQuad: + OutputType.Format.nChannels = 4; + OutputType.dwChannelMask = QUAD; + break; + case DevFmtX51: + OutputType.Format.nChannels = 6; + OutputType.dwChannelMask = X5DOT1; + break; + case DevFmtX51Rear: + OutputType.Format.nChannels = 6; + OutputType.dwChannelMask = X5DOT1REAR; + break; + case DevFmtX61: + OutputType.Format.nChannels = 7; + OutputType.dwChannelMask = X6DOT1; + break; + case DevFmtX71: + OutputType.Format.nChannels = 8; + OutputType.dwChannelMask = X7DOT1; + break; + } + switch(mDevice->FmtType) + { + case DevFmtByte: + mDevice->FmtType = DevFmtUByte; + /* fall-through */ + case DevFmtUByte: + OutputType.Format.wBitsPerSample = 8; + OutputType.Samples.wValidBitsPerSample = 8; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + break; + case DevFmtUShort: + mDevice->FmtType = DevFmtShort; + /* fall-through */ + case DevFmtShort: + OutputType.Format.wBitsPerSample = 16; + OutputType.Samples.wValidBitsPerSample = 16; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + break; + case DevFmtUInt: + mDevice->FmtType = DevFmtInt; + /* fall-through */ + case DevFmtInt: + OutputType.Format.wBitsPerSample = 32; + OutputType.Samples.wValidBitsPerSample = 32; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + break; + case DevFmtFloat: + OutputType.Format.wBitsPerSample = 32; + OutputType.Samples.wValidBitsPerSample = 32; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT; + break; + } + OutputType.Format.nSamplesPerSec = mDevice->Frequency; + + OutputType.Format.nBlockAlign = static_cast<WORD>(OutputType.Format.nChannels * + OutputType.Format.wBitsPerSample / 8); + OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec * + OutputType.Format.nBlockAlign; + + TraceFormat("Requesting playback format", &OutputType.Format); + hr = mClient->IsFormatSupported(AUDCLNT_SHAREMODE_SHARED, &OutputType.Format, &wfx); + if(FAILED(hr)) + { + ERR("Failed to check format support: 0x%08lx\n", hr); + hr = mClient->GetMixFormat(&wfx); + } + if(FAILED(hr)) + { + ERR("Failed to find a supported format: 0x%08lx\n", hr); + return hr; + } + + if(wfx != nullptr) + { + TraceFormat("Got playback format", wfx); + if(!MakeExtensible(&OutputType, wfx)) + { + CoTaskMemFree(wfx); + return E_FAIL; + } + CoTaskMemFree(wfx); + wfx = nullptr; + + mDevice->Frequency = OutputType.Format.nSamplesPerSec; + if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO) + mDevice->FmtChans = DevFmtMono; + else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO) + mDevice->FmtChans = DevFmtStereo; + else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD) + mDevice->FmtChans = DevFmtQuad; + else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1) + mDevice->FmtChans = DevFmtX51; + else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1REAR) + mDevice->FmtChans = DevFmtX51Rear; + else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1) + mDevice->FmtChans = DevFmtX61; + else if(OutputType.Format.nChannels == 8 && (OutputType.dwChannelMask == X7DOT1 || OutputType.dwChannelMask == X7DOT1_WIDE)) + mDevice->FmtChans = DevFmtX71; + else + { + ERR("Unhandled extensible channels: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask); + mDevice->FmtChans = DevFmtStereo; + OutputType.Format.nChannels = 2; + OutputType.dwChannelMask = STEREO; + } + + if(IsEqualGUID(OutputType.SubFormat, KSDATAFORMAT_SUBTYPE_PCM)) + { + if(OutputType.Format.wBitsPerSample == 8) + mDevice->FmtType = DevFmtUByte; + else if(OutputType.Format.wBitsPerSample == 16) + mDevice->FmtType = DevFmtShort; + else if(OutputType.Format.wBitsPerSample == 32) + mDevice->FmtType = DevFmtInt; + else + { + mDevice->FmtType = DevFmtShort; + OutputType.Format.wBitsPerSample = 16; + } + } + else if(IsEqualGUID(OutputType.SubFormat, KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) + { + mDevice->FmtType = DevFmtFloat; + OutputType.Format.wBitsPerSample = 32; + } + else + { + ERR("Unhandled format sub-type\n"); + mDevice->FmtType = DevFmtShort; + if(OutputType.Format.wFormatTag != WAVE_FORMAT_EXTENSIBLE) + OutputType.Format.wFormatTag = WAVE_FORMAT_PCM; + OutputType.Format.wBitsPerSample = 16; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + } + OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample; + } + + EndpointFormFactor formfactor = UnknownFormFactor; + get_device_formfactor(mMMDev, &formfactor); + mDevice->IsHeadphones = (mDevice->FmtChans == DevFmtStereo && + (formfactor == Headphones || formfactor == Headset)); + + SetDefaultWFXChannelOrder(mDevice); + + hr = mClient->Initialize(AUDCLNT_SHAREMODE_SHARED, AUDCLNT_STREAMFLAGS_EVENTCALLBACK, buf_time, + 0, &OutputType.Format, nullptr); + if(FAILED(hr)) + { + ERR("Failed to initialize audio client: 0x%08lx\n", hr); + return hr; + } + + UINT32 buffer_len{}, min_len{}; + REFERENCE_TIME min_per{}; + hr = mClient->GetDevicePeriod(&min_per, nullptr); + if(SUCCEEDED(hr)) + hr = mClient->GetBufferSize(&buffer_len); + if(FAILED(hr)) + { + ERR("Failed to get audio buffer info: 0x%08lx\n", hr); + return hr; + } + + /* Find the nearest multiple of the period size to the update size */ + if(min_per < per_time) + min_per *= maxi64((per_time + min_per/2) / min_per, 1); + min_len = static_cast<UINT32>(ScaleCeil(min_per, mDevice->Frequency, REFTIME_PER_SEC)); + min_len = minu(min_len, buffer_len/2); + + mDevice->UpdateSize = min_len; + mDevice->BufferSize = buffer_len; + + hr = mClient->SetEventHandle(mNotifyEvent); + if(FAILED(hr)) + { + ERR("Failed to set event handle: 0x%08lx\n", hr); + return hr; + } + + return hr; +} + + +bool WasapiPlayback::start() +{ + HRESULT hr{pushMessage(MsgType::StartDevice).get()}; + return SUCCEEDED(hr) ? true : false; +} + +HRESULT WasapiPlayback::startProxy() +{ + ResetEvent(mNotifyEvent); + + HRESULT hr = mClient->Start(); + if(FAILED(hr)) + { + ERR("Failed to start audio client: 0x%08lx\n", hr); + return hr; + } + + void *ptr; + hr = mClient->GetService(IID_IAudioRenderClient, &ptr); + if(SUCCEEDED(hr)) + { + mRender = static_cast<IAudioRenderClient*>(ptr); + try { + mKillNow.store(false, std::memory_order_release); + mThread = std::thread{std::mem_fn(&WasapiPlayback::mixerProc), this}; + } + catch(...) { + mRender->Release(); + mRender = nullptr; + ERR("Failed to start thread\n"); + hr = E_FAIL; + } + } + + if(FAILED(hr)) + mClient->Stop(); + + return hr; +} + + +void WasapiPlayback::stop() +{ pushMessage(MsgType::StopDevice).wait(); } + +void WasapiPlayback::stopProxy() +{ + if(!mRender || !mThread.joinable()) + return; + + mKillNow.store(true, std::memory_order_release); + mThread.join(); + + mRender->Release(); + mRender = nullptr; + mClient->Stop(); +} + + +ClockLatency WasapiPlayback::getClockLatency() +{ + ClockLatency ret; + + std::lock_guard<WasapiPlayback> _{*this}; + ret.ClockTime = GetDeviceClockTime(mDevice); + ret.Latency = std::chrono::seconds{mPadding.load(std::memory_order_relaxed)}; + ret.Latency /= mDevice->Frequency; + + return ret; +} + + +struct WasapiCapture final : public BackendBase, WasapiProxy { + WasapiCapture(ALCdevice *device) noexcept : BackendBase{device} { } + ~WasapiCapture() override; + + int recordProc(); + + void open(const ALCchar *name) override; + HRESULT openProxy() override; + void closeProxy() override; + + HRESULT resetProxy() override; + bool start() override; + HRESULT startProxy() override; + void stop() override; + void stopProxy() override; + + ALCenum captureSamples(al::byte *buffer, ALCuint samples) override; + ALCuint availableSamples() override; + + std::wstring mDevId; + + IMMDevice *mMMDev{nullptr}; + IAudioClient *mClient{nullptr}; + IAudioCaptureClient *mCapture{nullptr}; + HANDLE mNotifyEvent{nullptr}; + + ChannelConverter mChannelConv{}; + SampleConverterPtr mSampleConv; + RingBufferPtr mRing; + + std::atomic<bool> mKillNow{true}; + std::thread mThread; + + DEF_NEWDEL(WasapiCapture) +}; + +WasapiCapture::~WasapiCapture() +{ + pushMessage(MsgType::CloseDevice).wait(); + + if(mNotifyEvent != nullptr) + CloseHandle(mNotifyEvent); + mNotifyEvent = nullptr; +} + + +FORCE_ALIGN int WasapiCapture::recordProc() +{ + HRESULT hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); + if(FAILED(hr)) + { + ERR("CoInitializeEx(nullptr, COINIT_MULTITHREADED) failed: 0x%08lx\n", hr); + aluHandleDisconnect(mDevice, "COM init failed: 0x%08lx", hr); + return 1; + } + + althrd_setname(RECORD_THREAD_NAME); + + al::vector<float> samples; + while(!mKillNow.load(std::memory_order_relaxed)) + { + UINT32 avail; + hr = mCapture->GetNextPacketSize(&avail); + if(FAILED(hr)) + ERR("Failed to get next packet size: 0x%08lx\n", hr); + else if(avail > 0) + { + UINT32 numsamples; + DWORD flags; + BYTE *rdata; + + hr = mCapture->GetBuffer(&rdata, &numsamples, &flags, nullptr, nullptr); + if(FAILED(hr)) + ERR("Failed to get capture buffer: 0x%08lx\n", hr); + else + { + if(mChannelConv.is_active()) + { + samples.resize(numsamples*2); + mChannelConv.convert(rdata, samples.data(), numsamples); + rdata = reinterpret_cast<BYTE*>(samples.data()); + } + + auto data = mRing->getWriteVector(); + + size_t dstframes; + if(mSampleConv) + { + const ALvoid *srcdata{rdata}; + ALuint srcframes{numsamples}; + + dstframes = mSampleConv->convert(&srcdata, &srcframes, data.first.buf, + static_cast<ALuint>(minz(data.first.len, INT_MAX))); + if(srcframes > 0 && dstframes == data.first.len && data.second.len > 0) + { + /* If some source samples remain, all of the first dest + * block was filled, and there's space in the second + * dest block, do another run for the second block. + */ + dstframes += mSampleConv->convert(&srcdata, &srcframes, data.second.buf, + static_cast<ALuint>(minz(data.second.len, INT_MAX))); + } + } + else + { + const auto framesize = static_cast<ALuint>(mDevice->frameSizeFromFmt()); + size_t len1{minz(data.first.len, numsamples)}; + size_t len2{minz(data.second.len, numsamples-len1)}; + + memcpy(data.first.buf, rdata, len1*framesize); + if(len2 > 0) + memcpy(data.second.buf, rdata+len1*framesize, len2*framesize); + dstframes = len1 + len2; + } + + mRing->writeAdvance(dstframes); + + hr = mCapture->ReleaseBuffer(numsamples); + if(FAILED(hr)) ERR("Failed to release capture buffer: 0x%08lx\n", hr); + } + } + + if(FAILED(hr)) + { + aluHandleDisconnect(mDevice, "Failed to capture samples: 0x%08lx", hr); + break; + } + + DWORD res{WaitForSingleObjectEx(mNotifyEvent, 2000, FALSE)}; + if(res != WAIT_OBJECT_0) + ERR("WaitForSingleObjectEx error: 0x%lx\n", res); + } + + CoUninitialize(); + return 0; +} + + +void WasapiCapture::open(const ALCchar *name) +{ + HRESULT hr{S_OK}; + + mNotifyEvent = CreateEventW(nullptr, FALSE, FALSE, nullptr); + if(mNotifyEvent == nullptr) + { + ERR("Failed to create notify event: %lu\n", GetLastError()); + hr = E_FAIL; + } + + if(SUCCEEDED(hr)) + { + if(name) + { + if(CaptureDevices.empty()) + pushMessage(MsgType::EnumerateCapture).wait(); + + hr = E_FAIL; + auto iter = std::find_if(CaptureDevices.cbegin(), CaptureDevices.cend(), + [name](const DevMap &entry) -> bool + { return entry.name == name || entry.endpoint_guid == name; } + ); + if(iter == CaptureDevices.cend()) + { + std::wstring wname{utf8_to_wstr(name)}; + iter = std::find_if(CaptureDevices.cbegin(), CaptureDevices.cend(), + [&wname](const DevMap &entry) -> bool + { return entry.devid == wname; } + ); + } + if(iter == CaptureDevices.cend()) + WARN("Failed to find device name matching \"%s\"\n", name); + else + { + mDevId = iter->devid; + mDevice->DeviceName = iter->name; + hr = S_OK; + } + } + } + + if(SUCCEEDED(hr)) + hr = pushMessage(MsgType::OpenDevice).get(); + + if(FAILED(hr)) + { + if(mNotifyEvent != nullptr) + CloseHandle(mNotifyEvent); + mNotifyEvent = nullptr; + + mDevId.clear(); + + throw al::backend_exception{ALC_INVALID_VALUE, "Device init failed: 0x%08lx", hr}; + } + + hr = pushMessage(MsgType::ResetDevice).get(); + if(FAILED(hr)) + { + if(hr == E_OUTOFMEMORY) + throw al::backend_exception{ALC_OUT_OF_MEMORY, "Out of memory"}; + throw al::backend_exception{ALC_INVALID_VALUE, "Device reset failed"}; + } +} + +HRESULT WasapiCapture::openProxy() +{ + void *ptr; + HRESULT hr{CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_INPROC_SERVER, + IID_IMMDeviceEnumerator, &ptr)}; + if(SUCCEEDED(hr)) + { + auto Enumerator = static_cast<IMMDeviceEnumerator*>(ptr); + if(mDevId.empty()) + hr = Enumerator->GetDefaultAudioEndpoint(eCapture, eMultimedia, &mMMDev); + else + hr = Enumerator->GetDevice(mDevId.c_str(), &mMMDev); + Enumerator->Release(); + } + if(SUCCEEDED(hr)) + hr = mMMDev->Activate(IID_IAudioClient, CLSCTX_INPROC_SERVER, nullptr, &ptr); + if(SUCCEEDED(hr)) + { + mClient = static_cast<IAudioClient*>(ptr); + if(mDevice->DeviceName.empty()) + mDevice->DeviceName = get_device_name_and_guid(mMMDev).first; + } + + if(FAILED(hr)) + { + if(mMMDev) + mMMDev->Release(); + mMMDev = nullptr; + } + + return hr; +} + +void WasapiCapture::closeProxy() +{ + if(mClient) + mClient->Release(); + mClient = nullptr; + + if(mMMDev) + mMMDev->Release(); + mMMDev = nullptr; +} + +HRESULT WasapiCapture::resetProxy() +{ + if(mClient) + mClient->Release(); + mClient = nullptr; + + void *ptr; + HRESULT hr{mMMDev->Activate(IID_IAudioClient, CLSCTX_INPROC_SERVER, nullptr, &ptr)}; + if(FAILED(hr)) + { + ERR("Failed to reactivate audio client: 0x%08lx\n", hr); + return hr; + } + mClient = static_cast<IAudioClient*>(ptr); + + // Make sure buffer is at least 100ms in size + REFERENCE_TIME buf_time{mDevice->BufferSize * REFTIME_PER_SEC / mDevice->Frequency}; + buf_time = maxu64(buf_time, REFTIME_PER_SEC/10); + + WAVEFORMATEXTENSIBLE OutputType{}; + OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; + switch(mDevice->FmtChans) + { + case DevFmtMono: + OutputType.Format.nChannels = 1; + OutputType.dwChannelMask = MONO; + break; + case DevFmtStereo: + OutputType.Format.nChannels = 2; + OutputType.dwChannelMask = STEREO; + break; + case DevFmtQuad: + OutputType.Format.nChannels = 4; + OutputType.dwChannelMask = QUAD; + break; + case DevFmtX51: + OutputType.Format.nChannels = 6; + OutputType.dwChannelMask = X5DOT1; + break; + case DevFmtX51Rear: + OutputType.Format.nChannels = 6; + OutputType.dwChannelMask = X5DOT1REAR; + break; + case DevFmtX61: + OutputType.Format.nChannels = 7; + OutputType.dwChannelMask = X6DOT1; + break; + case DevFmtX71: + OutputType.Format.nChannels = 8; + OutputType.dwChannelMask = X7DOT1; + break; + + case DevFmtAmbi3D: + return E_FAIL; + } + switch(mDevice->FmtType) + { + /* NOTE: Signedness doesn't matter, the converter will handle it. */ + case DevFmtByte: + case DevFmtUByte: + OutputType.Format.wBitsPerSample = 8; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + break; + case DevFmtShort: + case DevFmtUShort: + OutputType.Format.wBitsPerSample = 16; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + break; + case DevFmtInt: + case DevFmtUInt: + OutputType.Format.wBitsPerSample = 32; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; + break; + case DevFmtFloat: + OutputType.Format.wBitsPerSample = 32; + OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT; + break; + } + OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample; + OutputType.Format.nSamplesPerSec = mDevice->Frequency; + + OutputType.Format.nBlockAlign = static_cast<WORD>(OutputType.Format.nChannels * + OutputType.Format.wBitsPerSample / 8); + OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec * + OutputType.Format.nBlockAlign; + OutputType.Format.cbSize = sizeof(OutputType) - sizeof(OutputType.Format); + + TraceFormat("Requesting capture format", &OutputType.Format); + WAVEFORMATEX *wfx; + hr = mClient->IsFormatSupported(AUDCLNT_SHAREMODE_SHARED, &OutputType.Format, &wfx); + if(FAILED(hr)) + { + ERR("Failed to check format support: 0x%08lx\n", hr); + return hr; + } + + mSampleConv = nullptr; + mChannelConv = {}; + + if(wfx != nullptr) + { + TraceFormat("Got capture format", wfx); + if(!(wfx->nChannels == OutputType.Format.nChannels || + (wfx->nChannels == 1 && OutputType.Format.nChannels == 2) || + (wfx->nChannels == 2 && OutputType.Format.nChannels == 1))) + { + ERR("Failed to get matching format, wanted: %s %s %uhz, got: %d channel%s %d-bit %luhz\n", + DevFmtChannelsString(mDevice->FmtChans), DevFmtTypeString(mDevice->FmtType), + mDevice->Frequency, wfx->nChannels, (wfx->nChannels==1)?"":"s", wfx->wBitsPerSample, + wfx->nSamplesPerSec); + CoTaskMemFree(wfx); + return E_FAIL; + } + + if(!MakeExtensible(&OutputType, wfx)) + { + CoTaskMemFree(wfx); + return E_FAIL; + } + CoTaskMemFree(wfx); + wfx = nullptr; + } + + DevFmtType srcType; + if(IsEqualGUID(OutputType.SubFormat, KSDATAFORMAT_SUBTYPE_PCM)) + { + if(OutputType.Format.wBitsPerSample == 8) + srcType = DevFmtUByte; + else if(OutputType.Format.wBitsPerSample == 16) + srcType = DevFmtShort; + else if(OutputType.Format.wBitsPerSample == 32) + srcType = DevFmtInt; + else + { + ERR("Unhandled integer bit depth: %d\n", OutputType.Format.wBitsPerSample); + return E_FAIL; + } + } + else if(IsEqualGUID(OutputType.SubFormat, KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) + { + if(OutputType.Format.wBitsPerSample == 32) + srcType = DevFmtFloat; + else + { + ERR("Unhandled float bit depth: %d\n", OutputType.Format.wBitsPerSample); + return E_FAIL; + } + } + else + { + ERR("Unhandled format sub-type\n"); + return E_FAIL; + } + + if(mDevice->FmtChans == DevFmtMono && OutputType.Format.nChannels == 2) + { + mChannelConv = ChannelConverter{srcType, DevFmtStereo, mDevice->FmtChans}; + TRACE("Created %s stereo-to-mono converter\n", DevFmtTypeString(srcType)); + /* The channel converter always outputs float, so change the input type + * for the resampler/type-converter. + */ + srcType = DevFmtFloat; + } + else if(mDevice->FmtChans == DevFmtStereo && OutputType.Format.nChannels == 1) + { + mChannelConv = ChannelConverter{srcType, DevFmtMono, mDevice->FmtChans}; + TRACE("Created %s mono-to-stereo converter\n", DevFmtTypeString(srcType)); + srcType = DevFmtFloat; + } + + if(mDevice->Frequency != OutputType.Format.nSamplesPerSec || mDevice->FmtType != srcType) + { + mSampleConv = CreateSampleConverter(srcType, mDevice->FmtType, mDevice->channelsFromFmt(), + OutputType.Format.nSamplesPerSec, mDevice->Frequency, Resampler::FastBSinc24); + if(!mSampleConv) + { + ERR("Failed to create converter for %s format, dst: %s %uhz, src: %s %luhz\n", + DevFmtChannelsString(mDevice->FmtChans), DevFmtTypeString(mDevice->FmtType), + mDevice->Frequency, DevFmtTypeString(srcType), OutputType.Format.nSamplesPerSec); + return E_FAIL; + } + TRACE("Created converter for %s format, dst: %s %uhz, src: %s %luhz\n", + DevFmtChannelsString(mDevice->FmtChans), DevFmtTypeString(mDevice->FmtType), + mDevice->Frequency, DevFmtTypeString(srcType), OutputType.Format.nSamplesPerSec); + } + + hr = mClient->Initialize(AUDCLNT_SHAREMODE_SHARED, AUDCLNT_STREAMFLAGS_EVENTCALLBACK, buf_time, + 0, &OutputType.Format, nullptr); + if(FAILED(hr)) + { + ERR("Failed to initialize audio client: 0x%08lx\n", hr); + return hr; + } + + UINT32 buffer_len{}; + REFERENCE_TIME min_per{}; + hr = mClient->GetDevicePeriod(&min_per, nullptr); + if(SUCCEEDED(hr)) + hr = mClient->GetBufferSize(&buffer_len); + if(FAILED(hr)) + { + ERR("Failed to get buffer size: 0x%08lx\n", hr); + return hr; + } + mDevice->UpdateSize = static_cast<ALuint>(ScaleCeil(min_per, mDevice->Frequency, + REFTIME_PER_SEC)); + mDevice->BufferSize = buffer_len; + + buffer_len = maxu(mDevice->BufferSize, buffer_len); + mRing = CreateRingBuffer(buffer_len, mDevice->frameSizeFromFmt(), false); + + hr = mClient->SetEventHandle(mNotifyEvent); + if(FAILED(hr)) + { + ERR("Failed to set event handle: 0x%08lx\n", hr); + return hr; + } + + return hr; +} + + +bool WasapiCapture::start() +{ + HRESULT hr{pushMessage(MsgType::StartDevice).get()}; + return SUCCEEDED(hr) ? true : false; +} + +HRESULT WasapiCapture::startProxy() +{ + ResetEvent(mNotifyEvent); + + HRESULT hr{mClient->Start()}; + if(FAILED(hr)) + { + ERR("Failed to start audio client: 0x%08lx\n", hr); + return hr; + } + + void *ptr; + hr = mClient->GetService(IID_IAudioCaptureClient, &ptr); + if(SUCCEEDED(hr)) + { + mCapture = static_cast<IAudioCaptureClient*>(ptr); + try { + mKillNow.store(false, std::memory_order_release); + mThread = std::thread{std::mem_fn(&WasapiCapture::recordProc), this}; + } + catch(...) { + mCapture->Release(); + mCapture = nullptr; + ERR("Failed to start thread\n"); + hr = E_FAIL; + } + } + + if(FAILED(hr)) + { + mClient->Stop(); + mClient->Reset(); + } + + return hr; +} + + +void WasapiCapture::stop() +{ pushMessage(MsgType::StopDevice).wait(); } + +void WasapiCapture::stopProxy() +{ + if(!mCapture || !mThread.joinable()) + return; + + mKillNow.store(true, std::memory_order_release); + mThread.join(); + + mCapture->Release(); + mCapture = nullptr; + mClient->Stop(); + mClient->Reset(); +} + + +ALCuint WasapiCapture::availableSamples() +{ return static_cast<ALCuint>(mRing->readSpace()); } + +ALCenum WasapiCapture::captureSamples(al::byte *buffer, ALCuint samples) +{ + mRing->read(buffer, samples); + return ALC_NO_ERROR; +} + +} // namespace + + +bool WasapiBackendFactory::init() +{ + static HRESULT InitResult{E_FAIL}; + + if(FAILED(InitResult)) try + { + std::promise<HRESULT> promise; + auto future = promise.get_future(); + + std::thread{&WasapiProxy::messageHandler, &promise}.detach(); + InitResult = future.get(); + } + catch(...) { + } + + return SUCCEEDED(InitResult) ? ALC_TRUE : ALC_FALSE; +} + +bool WasapiBackendFactory::querySupport(BackendType type) +{ return type == BackendType::Playback || type == BackendType::Capture; } + +void WasapiBackendFactory::probe(DevProbe type, std::string *outnames) +{ + auto add_device = [outnames](const DevMap &entry) -> void + { + /* +1 to also append the null char (to ensure a null-separated list and + * double-null terminated list). + */ + outnames->append(entry.name.c_str(), entry.name.length()+1); + }; + HRESULT hr{}; + switch(type) + { + case DevProbe::Playback: + hr = WasapiProxy::pushMessageStatic(MsgType::EnumeratePlayback).get(); + if(SUCCEEDED(hr)) + std::for_each(PlaybackDevices.cbegin(), PlaybackDevices.cend(), add_device); + break; + + case DevProbe::Capture: + hr = WasapiProxy::pushMessageStatic(MsgType::EnumerateCapture).get(); + if(SUCCEEDED(hr)) + std::for_each(CaptureDevices.cbegin(), CaptureDevices.cend(), add_device); + break; + } +} + +BackendPtr WasapiBackendFactory::createBackend(ALCdevice *device, BackendType type) +{ + if(type == BackendType::Playback) + return BackendPtr{new WasapiPlayback{device}}; + if(type == BackendType::Capture) + return BackendPtr{new WasapiCapture{device}}; + return nullptr; +} + +BackendFactory &WasapiBackendFactory::getFactory() +{ + static WasapiBackendFactory factory{}; + return factory; +} |