/** * 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" #include #include #include #include #include #include #include #include #include #include #include #include #ifndef _WAVEFORMATEXTENSIBLE_ #include #include #endif #include #include #include #include #include #include "alMain.h" #include "alu.h" #include "ringbuffer.h" #include "compat.h" #include "converter.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 { #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 ((REFERENCE_TIME)10000000) #define DEVNAME_HEAD "OpenAL Soft on " /* Scales the given value using 64-bit integer math, ceiling the result. */ inline ALint64 ScaleCeil(ALint64 val, ALint64 new_scale, ALint64 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 DevMap(T0&& name_, T1&& guid_, T2&& devid_) : name{std::forward(name_)} , endpoint_guid{std::forward(guid_)} , devid{std::forward(devid_)} { } }; bool checkName(const std::vector &list, const std::string &name) { return std::find_if(list.cbegin(), list.cend(), [&name](const DevMap &entry) -> bool { return entry.name == name; } ) != list.cend(); } std::vector PlaybackDevices; std::vector CaptureDevices; HANDLE ThreadHdl; DWORD ThreadID; struct ThreadRequest { HANDLE FinishedEvt; HRESULT result; }; #define WM_USER_First (WM_USER+0) #define WM_USER_OpenDevice (WM_USER+0) #define WM_USER_ResetDevice (WM_USER+1) #define WM_USER_StartDevice (WM_USER+2) #define WM_USER_StopDevice (WM_USER+3) #define WM_USER_CloseDevice (WM_USER+4) #define WM_USER_Enumerate (WM_USER+5) #define WM_USER_Last (WM_USER+5) constexpr char MessageStr[WM_USER_Last+1-WM_USER][20] = { "Open Device", "Reset Device", "Start Device", "Stop Device", "Close Device", "Enumerate Devices", }; inline void ReturnMsgResponse(ThreadRequest *req, HRESULT res) { req->result = res; SetEvent(req->FinishedEvt); } HRESULT WaitForResponse(ThreadRequest *req) { if(WaitForSingleObject(req->FinishedEvt, INFINITE) == WAIT_OBJECT_0) return req->result; ERR("Message response error: %lu\n", GetLastError()); return E_FAIL; } using NameGUIDPair = std::pair; 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(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(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(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(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, std::vector &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, std::vector &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(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; } /* Proxy interface used by the message handler. */ struct WasapiProxy { virtual HRESULT openProxy() = 0; virtual void closeProxy() = 0; virtual HRESULT resetProxy() = 0; virtual HRESULT startProxy() = 0; virtual void stopProxy() = 0; }; DWORD CALLBACK WasapiProxy_messageHandler(void *ptr) { auto req = reinterpret_cast(ptr); TRACE("Starting message thread\n"); HRESULT cohr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); if(FAILED(cohr)) { WARN("Failed to initialize COM: 0x%08lx\n", cohr); ReturnMsgResponse(req, cohr); return 0; } 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); CoUninitialize(); ReturnMsgResponse(req, hr); return 0; } auto Enumerator = reinterpret_cast(ptr); Enumerator->Release(); Enumerator = nullptr; CoUninitialize(); /* HACK: Force Windows to create a message queue for this thread before * returning success, otherwise PostThreadMessage may fail if it gets * called before GetMessage. */ MSG msg; PeekMessage(&msg, nullptr, WM_USER, WM_USER, PM_NOREMOVE); TRACE("Message thread initialization complete\n"); ReturnMsgResponse(req, S_OK); TRACE("Starting message loop\n"); ALuint deviceCount{0}; while(GetMessage(&msg, nullptr, WM_USER_First, WM_USER_Last)) { TRACE("Got message \"%s\" (0x%04x, lparam=%p, wparam=%p)\n", (msg.message >= WM_USER && msg.message <= WM_USER_Last) ? MessageStr[msg.message-WM_USER] : "Unknown", msg.message, (void*)msg.lParam, (void*)msg.wParam ); WasapiProxy *proxy{nullptr}; switch(msg.message) { case WM_USER_OpenDevice: req = reinterpret_cast(msg.wParam); proxy = reinterpret_cast(msg.lParam); hr = cohr = S_OK; if(++deviceCount == 1) hr = cohr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); if(SUCCEEDED(hr)) hr = proxy->openProxy(); if(FAILED(hr)) { if(--deviceCount == 0 && SUCCEEDED(cohr)) CoUninitialize(); } ReturnMsgResponse(req, hr); continue; case WM_USER_ResetDevice: req = reinterpret_cast(msg.wParam); proxy = reinterpret_cast(msg.lParam); hr = proxy->resetProxy(); ReturnMsgResponse(req, hr); continue; case WM_USER_StartDevice: req = reinterpret_cast(msg.wParam); proxy = reinterpret_cast(msg.lParam); hr = proxy->startProxy(); ReturnMsgResponse(req, hr); continue; case WM_USER_StopDevice: req = reinterpret_cast(msg.wParam); proxy = reinterpret_cast(msg.lParam); proxy->stopProxy(); ReturnMsgResponse(req, S_OK); continue; case WM_USER_CloseDevice: req = reinterpret_cast(msg.wParam); proxy = reinterpret_cast(msg.lParam); proxy->closeProxy(); if(--deviceCount == 0) CoUninitialize(); ReturnMsgResponse(req, S_OK); continue; case WM_USER_Enumerate: req = reinterpret_cast(msg.wParam); 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(SUCCEEDED(hr)) { Enumerator = reinterpret_cast(ptr); if(msg.lParam == ALL_DEVICE_PROBE) hr = probe_devices(Enumerator, eRender, PlaybackDevices); else if(msg.lParam == CAPTURE_DEVICE_PROBE) hr = probe_devices(Enumerator, eCapture, CaptureDevices); Enumerator->Release(); Enumerator = nullptr; } if(--deviceCount == 0 && SUCCEEDED(cohr)) CoUninitialize(); ReturnMsgResponse(req, hr); continue; default: ERR("Unexpected message: %u\n", msg.message); continue; } } TRACE("Message loop finished\n"); return 0; } struct ALCwasapiPlayback final : public ALCbackend, WasapiProxy { HRESULT openProxy() override; void closeProxy() override; HRESULT resetProxy() override; HRESULT startProxy() override; void stopProxy() override; std::wstring mDevId; IMMDevice *mMMDev{nullptr}; IAudioClient *mClient{nullptr}; IAudioRenderClient *mRender{nullptr}; HANDLE mNotifyEvent{nullptr}; HANDLE mMsgEvent{nullptr}; std::atomic mPadding{0u}; std::atomic mKillNow{AL_TRUE}; std::thread mThread; }; int ALCwasapiPlayback_mixerProc(ALCwasapiPlayback *self); void ALCwasapiPlayback_Construct(ALCwasapiPlayback *self, ALCdevice *device); void ALCwasapiPlayback_Destruct(ALCwasapiPlayback *self); ALCenum ALCwasapiPlayback_open(ALCwasapiPlayback *self, const ALCchar *name); ALCboolean ALCwasapiPlayback_reset(ALCwasapiPlayback *self); ALCboolean ALCwasapiPlayback_start(ALCwasapiPlayback *self); void ALCwasapiPlayback_stop(ALCwasapiPlayback *self); DECLARE_FORWARD2(ALCwasapiPlayback, ALCbackend, ALCenum, captureSamples, ALCvoid*, ALCuint) DECLARE_FORWARD(ALCwasapiPlayback, ALCbackend, ALCuint, availableSamples) ClockLatency ALCwasapiPlayback_getClockLatency(ALCwasapiPlayback *self); DECLARE_FORWARD(ALCwasapiPlayback, ALCbackend, void, lock) DECLARE_FORWARD(ALCwasapiPlayback, ALCbackend, void, unlock) DECLARE_DEFAULT_ALLOCATORS(ALCwasapiPlayback) DEFINE_ALCBACKEND_VTABLE(ALCwasapiPlayback); void ALCwasapiPlayback_Construct(ALCwasapiPlayback *self, ALCdevice *device) { new (self) ALCwasapiPlayback{}; SET_VTABLE2(ALCwasapiPlayback, ALCbackend, self); ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device); } void ALCwasapiPlayback_Destruct(ALCwasapiPlayback *self) { if(self->mMsgEvent) { ThreadRequest req = { self->mMsgEvent, 0 }; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_CloseDevice, (WPARAM)&req, (LPARAM)proxy)) (void)WaitForResponse(&req); CloseHandle(self->mMsgEvent); self->mMsgEvent = nullptr; } if(self->mNotifyEvent != nullptr) CloseHandle(self->mNotifyEvent); self->mNotifyEvent = nullptr; if(self->mMsgEvent != nullptr) CloseHandle(self->mMsgEvent); self->mMsgEvent = nullptr; ALCbackend_Destruct(STATIC_CAST(ALCbackend, self)); self->~ALCwasapiPlayback(); } FORCE_ALIGN int ALCwasapiPlayback_mixerProc(ALCwasapiPlayback *self) { ALCdevice *device{STATIC_CAST(ALCbackend, self)->mDevice}; IAudioClient *client{self->mClient}; IAudioRenderClient *render{self->mRender}; HRESULT hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); if(FAILED(hr)) { ERR("CoInitializeEx(nullptr, COINIT_MULTITHREADED) failed: 0x%08lx\n", hr); ALCwasapiPlayback_lock(self); aluHandleDisconnect(device, "COM init failed: 0x%08lx", hr); ALCwasapiPlayback_unlock(self); return 1; } SetRTPriority(); althrd_setname(MIXER_THREAD_NAME); ALuint update_size{device->UpdateSize}; UINT32 buffer_len{update_size * device->NumUpdates}; while(!self->mKillNow.load(std::memory_order_relaxed)) { UINT32 written; hr = client->GetCurrentPadding(&written); if(FAILED(hr)) { ERR("Failed to get padding: 0x%08lx\n", hr); ALCwasapiPlayback_lock(self); aluHandleDisconnect(device, "Failed to retrieve buffer padding: 0x%08lx", hr); ALCwasapiPlayback_unlock(self); break; } self->mPadding.store(written, std::memory_order_relaxed); ALuint len{buffer_len - written}; if(len < update_size) { DWORD res; res = WaitForSingleObjectEx(self->mNotifyEvent, 2000, FALSE); if(res != WAIT_OBJECT_0) ERR("WaitForSingleObjectEx error: 0x%lx\n", res); continue; } len -= len%update_size; BYTE *buffer; hr = render->GetBuffer(len, &buffer); if(SUCCEEDED(hr)) { ALCwasapiPlayback_lock(self); aluMixData(device, buffer, len); self->mPadding.store(written + len, std::memory_order_relaxed); ALCwasapiPlayback_unlock(self); hr = render->ReleaseBuffer(len, 0); } if(FAILED(hr)) { ERR("Failed to buffer data: 0x%08lx\n", hr); ALCwasapiPlayback_lock(self); aluHandleDisconnect(device, "Failed to send playback samples: 0x%08lx", hr); ALCwasapiPlayback_unlock(self); break; } } self->mPadding.store(0u, std::memory_order_release); CoUninitialize(); return 0; } ALCboolean MakeExtensible(WAVEFORMATEXTENSIBLE *out, const WAVEFORMATEX *in) { memset(out, 0, sizeof(*out)); if(in->wFormatTag == WAVE_FORMAT_EXTENSIBLE) *out = *(const WAVEFORMATEXTENSIBLE*)in; else if(in->wFormatTag == WAVE_FORMAT_PCM) { out->Format = *in; out->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; out->Format.cbSize = sizeof(*out) - sizeof(*in); 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.wFormatTag = WAVE_FORMAT_EXTENSIBLE; out->Format.cbSize = sizeof(*out) - sizeof(*in); 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 ALC_FALSE; } return ALC_TRUE; } ALCenum ALCwasapiPlayback_open(ALCwasapiPlayback *self, const ALCchar *deviceName) { HRESULT hr = S_OK; self->mNotifyEvent = CreateEventW(nullptr, FALSE, FALSE, nullptr); self->mMsgEvent = CreateEventW(nullptr, FALSE, FALSE, nullptr); if(self->mNotifyEvent == nullptr || self->mMsgEvent == nullptr) { ERR("Failed to create message events: %lu\n", GetLastError()); hr = E_FAIL; } if(SUCCEEDED(hr)) { if(deviceName) { if(PlaybackDevices.empty()) { ThreadRequest req = { self->mMsgEvent, 0 }; if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, ALL_DEVICE_PROBE)) (void)WaitForResponse(&req); } hr = E_FAIL; auto iter = std::find_if(PlaybackDevices.cbegin(), PlaybackDevices.cend(), [deviceName](const DevMap &entry) -> bool { return entry.name == deviceName || entry.endpoint_guid == deviceName; } ); if(iter == PlaybackDevices.cend()) { std::wstring wname{utf8_to_wstr(deviceName)}; 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", deviceName); else { ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice; self->mDevId = iter->devid; device->DeviceName = iter->name; hr = S_OK; } } } if(SUCCEEDED(hr)) { ThreadRequest req{ self->mMsgEvent, 0 }; auto proxy = static_cast(self); hr = E_FAIL; if(PostThreadMessage(ThreadID, WM_USER_OpenDevice, (WPARAM)&req, (LPARAM)proxy)) hr = WaitForResponse(&req); else ERR("Failed to post thread message: %lu\n", GetLastError()); } if(FAILED(hr)) { if(self->mNotifyEvent != nullptr) CloseHandle(self->mNotifyEvent); self->mNotifyEvent = nullptr; if(self->mMsgEvent != nullptr) CloseHandle(self->mMsgEvent); self->mMsgEvent = nullptr; self->mDevId.clear(); ERR("Device init failed: 0x%08lx\n", hr); return ALC_INVALID_VALUE; } return ALC_NO_ERROR; } HRESULT ALCwasapiPlayback::openProxy() { ALCdevice *device = STATIC_CAST(ALCbackend, this)->mDevice; void *ptr; HRESULT hr = CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_INPROC_SERVER, IID_IMMDeviceEnumerator, &ptr); if(SUCCEEDED(hr)) { auto Enumerator = reinterpret_cast(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 = reinterpret_cast(ptr); if(device->DeviceName.empty()) device->DeviceName = get_device_name_and_guid(mMMDev).first; } if(FAILED(hr)) { if(mMMDev) mMMDev->Release(); mMMDev = nullptr; } return hr; } void ALCwasapiPlayback::closeProxy() { if(mClient) mClient->Release(); mClient = nullptr; if(mMMDev) mMMDev->Release(); mMMDev = nullptr; } ALCboolean ALCwasapiPlayback_reset(ALCwasapiPlayback *self) { ThreadRequest req{ self->mMsgEvent, 0 }; HRESULT hr{E_FAIL}; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_ResetDevice, (WPARAM)&req, (LPARAM)proxy)) hr = WaitForResponse(&req); return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE; } HRESULT ALCwasapiPlayback::resetProxy() { ALCdevice *device{STATIC_CAST(ALCbackend, this)->mDevice}; 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 = reinterpret_cast(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; REFERENCE_TIME buf_time{ScaleCeil(device->UpdateSize*device->NumUpdates, REFTIME_PER_SEC, device->Frequency)}; if(!(device->Flags&DEVICE_FREQUENCY_REQUEST)) device->Frequency = OutputType.Format.nSamplesPerSec; if(!(device->Flags&DEVICE_CHANNELS_REQUEST)) { if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO) device->FmtChans = DevFmtMono; else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO) device->FmtChans = DevFmtStereo; else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD) device->FmtChans = DevFmtQuad; else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1) device->FmtChans = DevFmtX51; else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1REAR) device->FmtChans = DevFmtX51Rear; else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1) device->FmtChans = DevFmtX61; else if(OutputType.Format.nChannels == 8 && (OutputType.dwChannelMask == X7DOT1 || OutputType.dwChannelMask == X7DOT1_WIDE)) device->FmtChans = DevFmtX71; else ERR("Unhandled channel config: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask); } switch(device->FmtChans) { case DevFmtMono: OutputType.Format.nChannels = 1; OutputType.dwChannelMask = MONO; break; case DevFmtAmbi3D: device->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(device->FmtType) { case DevFmtByte: device->FmtType = DevFmtUByte; /* fall-through */ case DevFmtUByte: OutputType.Format.wBitsPerSample = 8; OutputType.Samples.wValidBitsPerSample = 8; OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; break; case DevFmtUShort: device->FmtType = DevFmtShort; /* fall-through */ case DevFmtShort: OutputType.Format.wBitsPerSample = 16; OutputType.Samples.wValidBitsPerSample = 16; OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; break; case DevFmtUInt: device->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 = device->Frequency; OutputType.Format.nBlockAlign = OutputType.Format.nChannels * OutputType.Format.wBitsPerSample / 8; OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec * OutputType.Format.nBlockAlign; 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) { if(!MakeExtensible(&OutputType, wfx)) { CoTaskMemFree(wfx); return E_FAIL; } CoTaskMemFree(wfx); wfx = nullptr; device->Frequency = OutputType.Format.nSamplesPerSec; if(OutputType.Format.nChannels == 1 && OutputType.dwChannelMask == MONO) device->FmtChans = DevFmtMono; else if(OutputType.Format.nChannels == 2 && OutputType.dwChannelMask == STEREO) device->FmtChans = DevFmtStereo; else if(OutputType.Format.nChannels == 4 && OutputType.dwChannelMask == QUAD) device->FmtChans = DevFmtQuad; else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1) device->FmtChans = DevFmtX51; else if(OutputType.Format.nChannels == 6 && OutputType.dwChannelMask == X5DOT1REAR) device->FmtChans = DevFmtX51Rear; else if(OutputType.Format.nChannels == 7 && OutputType.dwChannelMask == X6DOT1) device->FmtChans = DevFmtX61; else if(OutputType.Format.nChannels == 8 && (OutputType.dwChannelMask == X7DOT1 || OutputType.dwChannelMask == X7DOT1_WIDE)) device->FmtChans = DevFmtX71; else { ERR("Unhandled extensible channels: %d -- 0x%08lx\n", OutputType.Format.nChannels, OutputType.dwChannelMask); device->FmtChans = DevFmtStereo; OutputType.Format.nChannels = 2; OutputType.dwChannelMask = STEREO; } if(IsEqualGUID(OutputType.SubFormat, KSDATAFORMAT_SUBTYPE_PCM)) { if(OutputType.Format.wBitsPerSample == 8) device->FmtType = DevFmtUByte; else if(OutputType.Format.wBitsPerSample == 16) device->FmtType = DevFmtShort; else if(OutputType.Format.wBitsPerSample == 32) device->FmtType = DevFmtInt; else { device->FmtType = DevFmtShort; OutputType.Format.wBitsPerSample = 16; } } else if(IsEqualGUID(OutputType.SubFormat, KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) { device->FmtType = DevFmtFloat; OutputType.Format.wBitsPerSample = 32; } else { ERR("Unhandled format sub-type\n"); device->FmtType = DevFmtShort; OutputType.Format.wBitsPerSample = 16; OutputType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM; } OutputType.Samples.wValidBitsPerSample = OutputType.Format.wBitsPerSample; } EndpointFormFactor formfactor = UnknownFormFactor; get_device_formfactor(mMMDev, &formfactor); device->IsHeadphones = (device->FmtChans == DevFmtStereo && (formfactor == Headphones || formfactor == Headset) ); SetDefaultWFXChannelOrder(device); 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)) { min_len = (UINT32)ScaleCeil(min_per, device->Frequency, REFTIME_PER_SEC); /* Find the nearest multiple of the period size to the update size */ if(min_len < device->UpdateSize) min_len *= (device->UpdateSize + min_len/2)/min_len; hr = mClient->GetBufferSize(&buffer_len); } if(FAILED(hr)) { ERR("Failed to get audio buffer info: 0x%08lx\n", hr); return hr; } device->UpdateSize = min_len; device->NumUpdates = buffer_len / device->UpdateSize; if(device->NumUpdates <= 1) { ERR("Audio client returned buffer_len < period*2; expect break up\n"); device->NumUpdates = 2; device->UpdateSize = buffer_len / device->NumUpdates; } hr = mClient->SetEventHandle(mNotifyEvent); if(FAILED(hr)) { ERR("Failed to set event handle: 0x%08lx\n", hr); return hr; } return hr; } ALCboolean ALCwasapiPlayback_start(ALCwasapiPlayback *self) { ThreadRequest req{ self->mMsgEvent, 0 }; HRESULT hr{E_FAIL}; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_StartDevice, (WPARAM)&req, (LPARAM)proxy)) hr = WaitForResponse(&req); return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE; } HRESULT ALCwasapiPlayback::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 = reinterpret_cast(ptr); try { mKillNow.store(AL_FALSE, std::memory_order_release); mThread = std::thread(ALCwasapiPlayback_mixerProc, this); } catch(...) { mRender->Release(); mRender = nullptr; ERR("Failed to start thread\n"); hr = E_FAIL; } } if(FAILED(hr)) mClient->Stop(); return hr; } void ALCwasapiPlayback_stop(ALCwasapiPlayback *self) { ThreadRequest req{ self->mMsgEvent, 0 }; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_StopDevice, (WPARAM)&req, (LPARAM)proxy)) (void)WaitForResponse(&req); } void ALCwasapiPlayback::stopProxy() { if(!mRender || !mThread.joinable()) return; mKillNow.store(AL_TRUE); mThread.join(); mRender->Release(); mRender = nullptr; mClient->Stop(); } ClockLatency ALCwasapiPlayback_getClockLatency(ALCwasapiPlayback *self) { ClockLatency ret; ALCwasapiPlayback_lock(self); ALCdevice *device{STATIC_CAST(ALCbackend, self)->mDevice}; ret.ClockTime = GetDeviceClockTime(device); ret.Latency = self->mPadding.load(std::memory_order_relaxed) * DEVICE_CLOCK_RES / device->Frequency; ALCwasapiPlayback_unlock(self); return ret; } struct ALCwasapiCapture final : public ALCbackend, WasapiProxy { HRESULT openProxy() override; void closeProxy() override; HRESULT resetProxy() override; HRESULT startProxy() override; void stopProxy() override; std::wstring mDevId; IMMDevice *mMMDev{nullptr}; IAudioClient *mClient{nullptr}; IAudioCaptureClient *mCapture{nullptr}; HANDLE mNotifyEvent{nullptr}; HANDLE mMsgEvent{nullptr}; ChannelConverter *mChannelConv{nullptr}; SampleConverter *mSampleConv{nullptr}; ll_ringbuffer_t *mRing{nullptr}; std::atomic mKillNow{AL_TRUE}; std::thread mThread; }; int ALCwasapiCapture_recordProc(ALCwasapiCapture *self); void ALCwasapiCapture_Construct(ALCwasapiCapture *self, ALCdevice *device); void ALCwasapiCapture_Destruct(ALCwasapiCapture *self); ALCenum ALCwasapiCapture_open(ALCwasapiCapture *self, const ALCchar *name); DECLARE_FORWARD(ALCwasapiCapture, ALCbackend, ALCboolean, reset) ALCboolean ALCwasapiCapture_start(ALCwasapiCapture *self); void ALCwasapiCapture_stop(ALCwasapiCapture *self); ALCenum ALCwasapiCapture_captureSamples(ALCwasapiCapture *self, ALCvoid *buffer, ALCuint samples); ALuint ALCwasapiCapture_availableSamples(ALCwasapiCapture *self); DECLARE_FORWARD(ALCwasapiCapture, ALCbackend, ClockLatency, getClockLatency) DECLARE_FORWARD(ALCwasapiCapture, ALCbackend, void, lock) DECLARE_FORWARD(ALCwasapiCapture, ALCbackend, void, unlock) DECLARE_DEFAULT_ALLOCATORS(ALCwasapiCapture) DEFINE_ALCBACKEND_VTABLE(ALCwasapiCapture); void ALCwasapiCapture_Construct(ALCwasapiCapture *self, ALCdevice *device) { new (self) ALCwasapiCapture{}; SET_VTABLE2(ALCwasapiCapture, ALCbackend, self); ALCbackend_Construct(STATIC_CAST(ALCbackend, self), device); } void ALCwasapiCapture_Destruct(ALCwasapiCapture *self) { if(self->mMsgEvent) { ThreadRequest req{ self->mMsgEvent, 0 }; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_CloseDevice, (WPARAM)&req, (LPARAM)proxy)) (void)WaitForResponse(&req); CloseHandle(self->mMsgEvent); self->mMsgEvent = nullptr; } if(self->mNotifyEvent != nullptr) CloseHandle(self->mNotifyEvent); self->mNotifyEvent = nullptr; ll_ringbuffer_free(self->mRing); self->mRing = nullptr; DestroySampleConverter(&self->mSampleConv); DestroyChannelConverter(&self->mChannelConv); ALCbackend_Destruct(STATIC_CAST(ALCbackend, self)); self->~ALCwasapiCapture(); } FORCE_ALIGN int ALCwasapiCapture_recordProc(ALCwasapiCapture *self) { ALCdevice *device{STATIC_CAST(ALCbackend, self)->mDevice}; IAudioCaptureClient *capture{self->mCapture}; HRESULT hr = CoInitializeEx(nullptr, COINIT_MULTITHREADED); if(FAILED(hr)) { ERR("CoInitializeEx(nullptr, COINIT_MULTITHREADED) failed: 0x%08lx\n", hr); ALCwasapiCapture_lock(self); aluHandleDisconnect(device, "COM init failed: 0x%08lx", hr); ALCwasapiCapture_unlock(self); return 1; } althrd_setname(RECORD_THREAD_NAME); std::vector samples; while(!self->mKillNow.load(std::memory_order_relaxed)) { UINT32 avail; DWORD res; hr = capture->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 = capture->GetBuffer(&rdata, &numsamples, &flags, nullptr, nullptr); if(FAILED(hr)) ERR("Failed to get capture buffer: 0x%08lx\n", hr); else { if(self->mChannelConv) { samples.resize(numsamples*2); ChannelConverterInput(self->mChannelConv, rdata, samples.data(), numsamples); rdata = reinterpret_cast(samples.data()); } auto data = ll_ringbuffer_get_write_vector(self->mRing); size_t dstframes; if(self->mSampleConv) { const ALvoid *srcdata = rdata; ALsizei srcframes = numsamples; dstframes = SampleConverterInput(self->mSampleConv, &srcdata, &srcframes, data.first.buf, (ALsizei)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 += SampleConverterInput(self->mSampleConv, &srcdata, &srcframes, data.second.buf, (ALsizei)minz(data.second.len, INT_MAX) ); } } else { ALuint framesize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->mAmbiOrder); 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; } ll_ringbuffer_write_advance(self->mRing, dstframes); hr = capture->ReleaseBuffer(numsamples); if(FAILED(hr)) ERR("Failed to release capture buffer: 0x%08lx\n", hr); } } if(FAILED(hr)) { ALCwasapiCapture_lock(self); aluHandleDisconnect(device, "Failed to capture samples: 0x%08lx", hr); ALCwasapiCapture_unlock(self); break; } res = WaitForSingleObjectEx(self->mNotifyEvent, 2000, FALSE); if(res != WAIT_OBJECT_0) ERR("WaitForSingleObjectEx error: 0x%lx\n", res); } CoUninitialize(); return 0; } ALCenum ALCwasapiCapture_open(ALCwasapiCapture *self, const ALCchar *deviceName) { HRESULT hr{S_OK}; self->mNotifyEvent = CreateEventW(nullptr, FALSE, FALSE, nullptr); self->mMsgEvent = CreateEventW(nullptr, FALSE, FALSE, nullptr); if(self->mNotifyEvent == nullptr || self->mMsgEvent == nullptr) { ERR("Failed to create message events: %lu\n", GetLastError()); hr = E_FAIL; } if(SUCCEEDED(hr)) { if(deviceName) { if(CaptureDevices.empty()) { ThreadRequest req{ self->mMsgEvent, 0 }; if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, CAPTURE_DEVICE_PROBE)) (void)WaitForResponse(&req); } hr = E_FAIL; auto iter = std::find_if(CaptureDevices.cbegin(), CaptureDevices.cend(), [deviceName](const DevMap &entry) -> bool { return entry.name == deviceName || entry.endpoint_guid == deviceName; } ); if(iter == CaptureDevices.cend()) { std::wstring wname{utf8_to_wstr(deviceName)}; 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", deviceName); else { ALCdevice *device = STATIC_CAST(ALCbackend,self)->mDevice; self->mDevId = iter->devid; device->DeviceName = iter->name; hr = S_OK; } } } if(SUCCEEDED(hr)) { ThreadRequest req{ self->mMsgEvent, 0 }; hr = E_FAIL; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_OpenDevice, (WPARAM)&req, (LPARAM)proxy)) hr = WaitForResponse(&req); else ERR("Failed to post thread message: %lu\n", GetLastError()); } if(FAILED(hr)) { if(self->mNotifyEvent != nullptr) CloseHandle(self->mNotifyEvent); self->mNotifyEvent = nullptr; if(self->mMsgEvent != nullptr) CloseHandle(self->mMsgEvent); self->mMsgEvent = nullptr; self->mDevId.clear(); ERR("Device init failed: 0x%08lx\n", hr); return ALC_INVALID_VALUE; } else { ThreadRequest req{ self->mMsgEvent, 0 }; hr = E_FAIL; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_ResetDevice, (WPARAM)&req, (LPARAM)proxy)) hr = WaitForResponse(&req); else ERR("Failed to post thread message: %lu\n", GetLastError()); if(FAILED(hr)) { if(hr == E_OUTOFMEMORY) return ALC_OUT_OF_MEMORY; return ALC_INVALID_VALUE; } } return ALC_NO_ERROR; } HRESULT ALCwasapiCapture::openProxy() { ALCdevice *device{STATIC_CAST(ALCbackend, this)->mDevice}; void *ptr; HRESULT hr = CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_INPROC_SERVER, IID_IMMDeviceEnumerator, &ptr); if(SUCCEEDED(hr)) { auto Enumerator = reinterpret_cast(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 = reinterpret_cast(ptr); if(device->DeviceName.empty()) device->DeviceName = get_device_name_and_guid(mMMDev).first; } if(FAILED(hr)) { if(mMMDev) mMMDev->Release(); mMMDev = nullptr; } return hr; } void ALCwasapiCapture::closeProxy() { if(mClient) mClient->Release(); mClient = nullptr; if(mMMDev) mMMDev->Release(); mMMDev = nullptr; } HRESULT ALCwasapiCapture::resetProxy() { ALCdevice *device{STATIC_CAST(ALCbackend, this)->mDevice}; 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 = reinterpret_cast(ptr); REFERENCE_TIME buf_time{ScaleCeil(device->UpdateSize*device->NumUpdates, REFTIME_PER_SEC, device->Frequency)}; // Make sure buffer is at least 100ms in size buf_time = maxu64(buf_time, REFTIME_PER_SEC/10); device->UpdateSize = (ALuint)ScaleCeil(buf_time, device->Frequency, REFTIME_PER_SEC) / device->NumUpdates; WAVEFORMATEXTENSIBLE OutputType; OutputType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE; switch(device->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(device->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 = device->Frequency; OutputType.Format.nBlockAlign = OutputType.Format.nChannels * OutputType.Format.wBitsPerSample / 8; OutputType.Format.nAvgBytesPerSec = OutputType.Format.nSamplesPerSec * OutputType.Format.nBlockAlign; OutputType.Format.cbSize = sizeof(OutputType) - sizeof(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; } DestroySampleConverter(&mSampleConv); DestroyChannelConverter(&mChannelConv); if(wfx != nullptr) { 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(device->FmtChans), DevFmtTypeString(device->FmtType), device->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; } enum 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(device->FmtChans == DevFmtMono && OutputType.Format.nChannels == 2) { mChannelConv = CreateChannelConverter(srcType, DevFmtStereo, device->FmtChans); if(!mChannelConv) { ERR("Failed to create %s stereo-to-mono converter\n", DevFmtTypeString(srcType)); return E_FAIL; } 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(device->FmtChans == DevFmtStereo && OutputType.Format.nChannels == 1) { mChannelConv = CreateChannelConverter(srcType, DevFmtMono, device->FmtChans); if(!mChannelConv) { ERR("Failed to create %s mono-to-stereo converter\n", DevFmtTypeString(srcType)); return E_FAIL; } TRACE("Created %s mono-to-stereo converter\n", DevFmtTypeString(srcType)); srcType = DevFmtFloat; } if(device->Frequency != OutputType.Format.nSamplesPerSec || device->FmtType != srcType) { mSampleConv = CreateSampleConverter( srcType, device->FmtType, ChannelsFromDevFmt(device->FmtChans, device->mAmbiOrder), OutputType.Format.nSamplesPerSec, device->Frequency ); if(!mSampleConv) { ERR("Failed to create converter for %s format, dst: %s %uhz, src: %s %luhz\n", DevFmtChannelsString(device->FmtChans), DevFmtTypeString(device->FmtType), device->Frequency, DevFmtTypeString(srcType), OutputType.Format.nSamplesPerSec); return E_FAIL; } TRACE("Created converter for %s format, dst: %s %uhz, src: %s %luhz\n", DevFmtChannelsString(device->FmtChans), DevFmtTypeString(device->FmtType), device->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; hr = mClient->GetBufferSize(&buffer_len); if(FAILED(hr)) { ERR("Failed to get buffer size: 0x%08lx\n", hr); return hr; } buffer_len = maxu(device->UpdateSize*device->NumUpdates, buffer_len); ll_ringbuffer_free(mRing); mRing = ll_ringbuffer_create(buffer_len, FrameSizeFromDevFmt(device->FmtChans, device->FmtType, device->mAmbiOrder), false ); if(!mRing) { ERR("Failed to allocate capture ring buffer\n"); return E_OUTOFMEMORY; } hr = mClient->SetEventHandle(mNotifyEvent); if(FAILED(hr)) { ERR("Failed to set event handle: 0x%08lx\n", hr); return hr; } return hr; } ALCboolean ALCwasapiCapture_start(ALCwasapiCapture *self) { ThreadRequest req{ self->mMsgEvent, 0 }; HRESULT hr{E_FAIL}; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_StartDevice, (WPARAM)&req, (LPARAM)proxy)) hr = WaitForResponse(&req); return SUCCEEDED(hr) ? ALC_TRUE : ALC_FALSE; } HRESULT ALCwasapiCapture::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 = reinterpret_cast(ptr); try { mKillNow.store(AL_FALSE, std::memory_order_release); mThread = std::thread(ALCwasapiCapture_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 ALCwasapiCapture_stop(ALCwasapiCapture *self) { ThreadRequest req{ self->mMsgEvent, 0 }; auto proxy = static_cast(self); if(PostThreadMessage(ThreadID, WM_USER_StopDevice, (WPARAM)&req, (LPARAM)proxy)) (void)WaitForResponse(&req); } void ALCwasapiCapture::stopProxy() { if(!mCapture || !mThread.joinable()) return; mKillNow.store(AL_TRUE); mThread.join(); mCapture->Release(); mCapture = nullptr; mClient->Stop(); mClient->Reset(); } ALuint ALCwasapiCapture_availableSamples(ALCwasapiCapture *self) { return (ALuint)ll_ringbuffer_read_space(self->mRing); } ALCenum ALCwasapiCapture_captureSamples(ALCwasapiCapture *self, ALCvoid *buffer, ALCuint samples) { if(ALCwasapiCapture_availableSamples(self) < samples) return ALC_INVALID_VALUE; ll_ringbuffer_read(self->mRing, reinterpret_cast(buffer), samples); return ALC_NO_ERROR; } } // namespace bool WasapiBackendFactory::init() { static HRESULT InitResult; if(!ThreadHdl) { ThreadRequest req; InitResult = E_FAIL; req.FinishedEvt = CreateEventW(nullptr, FALSE, FALSE, nullptr); if(req.FinishedEvt == nullptr) ERR("Failed to create event: %lu\n", GetLastError()); else { ThreadHdl = CreateThread(nullptr, 0, WasapiProxy_messageHandler, &req, 0, &ThreadID); if(ThreadHdl != nullptr) InitResult = WaitForResponse(&req); CloseHandle(req.FinishedEvt); } } return SUCCEEDED(InitResult) ? ALC_TRUE : ALC_FALSE; } void WasapiBackendFactory::deinit() { PlaybackDevices.clear(); CaptureDevices.clear(); if(ThreadHdl) { TRACE("Sending WM_QUIT to Thread %04lx\n", ThreadID); PostThreadMessage(ThreadID, WM_QUIT, 0, 0); CloseHandle(ThreadHdl); ThreadHdl = nullptr; } } bool WasapiBackendFactory::querySupport(ALCbackend_Type type) { return (type == ALCbackend_Playback || type == ALCbackend_Capture); } void WasapiBackendFactory::probe(enum DevProbe type, std::string *outnames) { ThreadRequest req{ nullptr, 0 }; req.FinishedEvt = CreateEventW(nullptr, FALSE, FALSE, nullptr); if(req.FinishedEvt == nullptr) ERR("Failed to create event: %lu\n", GetLastError()); else { 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 = E_FAIL; if(PostThreadMessage(ThreadID, WM_USER_Enumerate, (WPARAM)&req, type)) hr = WaitForResponse(&req); if(SUCCEEDED(hr)) switch(type) { case ALL_DEVICE_PROBE: std::for_each(PlaybackDevices.cbegin(), PlaybackDevices.cend(), add_device); break; case CAPTURE_DEVICE_PROBE: std::for_each(CaptureDevices.cbegin(), CaptureDevices.cend(), add_device); break; } CloseHandle(req.FinishedEvt); req.FinishedEvt = nullptr; } } ALCbackend *WasapiBackendFactory::createBackend(ALCdevice *device, ALCbackend_Type type) { if(type == ALCbackend_Playback) { ALCwasapiPlayback *backend; NEW_OBJ(backend, ALCwasapiPlayback)(device); if(!backend) return nullptr; return STATIC_CAST(ALCbackend, backend); } if(type == ALCbackend_Capture) { ALCwasapiCapture *backend; NEW_OBJ(backend, ALCwasapiCapture)(device); if(!backend) return nullptr; return STATIC_CAST(ALCbackend, backend); } return nullptr; } BackendFactory &WasapiBackendFactory::getFactory() { static WasapiBackendFactory factory{}; return factory; }