a7f49ac9a1
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880 lines
24 KiB
C++
880 lines
24 KiB
C++
/*************************************************************************/
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/* audio_driver_wasapi.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* https://godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur. */
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/* Copyright (c) 2014-2020 Godot Engine contributors (cf. AUTHORS.md). */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#ifdef WASAPI_ENABLED
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#include "audio_driver_wasapi.h"
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#include "core/os/os.h"
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#include "core/project_settings.h"
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#include <functiondiscoverykeys.h>
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#ifndef PKEY_Device_FriendlyName
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#undef DEFINE_PROPERTYKEY
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/* clang-format off */
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#define DEFINE_PROPERTYKEY(id, a, b, c, d, e, f, g, h, i, j, k, l) \
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const PROPERTYKEY id = { { a, b, c, { d, e, f, g, h, i, j, k, } }, l };
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/* clang-format on */
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DEFINE_PROPERTYKEY(PKEY_Device_FriendlyName, 0xa45c254e, 0xdf1c, 0x4efd, 0x80, 0x20, 0x67, 0xd1, 0x46, 0xa8, 0x50, 0xe0, 14);
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#endif
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const CLSID CLSID_MMDeviceEnumerator = __uuidof(MMDeviceEnumerator);
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const IID IID_IMMDeviceEnumerator = __uuidof(IMMDeviceEnumerator);
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const IID IID_IAudioClient = __uuidof(IAudioClient);
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const IID IID_IAudioRenderClient = __uuidof(IAudioRenderClient);
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const IID IID_IAudioCaptureClient = __uuidof(IAudioCaptureClient);
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#define SAFE_RELEASE(memory) \
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if ((memory) != NULL) { \
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(memory)->Release(); \
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(memory) = NULL; \
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}
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#define REFTIMES_PER_SEC 10000000
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#define REFTIMES_PER_MILLISEC 10000
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#define CAPTURE_BUFFER_CHANNELS 2
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static bool default_render_device_changed = false;
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static bool default_capture_device_changed = false;
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class CMMNotificationClient : public IMMNotificationClient {
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LONG _cRef;
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IMMDeviceEnumerator *_pEnumerator;
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public:
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CMMNotificationClient() :
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_cRef(1),
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_pEnumerator(NULL) {}
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virtual ~CMMNotificationClient() {
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if ((_pEnumerator) != NULL) {
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(_pEnumerator)->Release();
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(_pEnumerator) = NULL;
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}
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}
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ULONG STDMETHODCALLTYPE AddRef() {
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return InterlockedIncrement(&_cRef);
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}
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ULONG STDMETHODCALLTYPE Release() {
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ULONG ulRef = InterlockedDecrement(&_cRef);
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if (0 == ulRef) {
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delete this;
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}
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return ulRef;
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}
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HRESULT STDMETHODCALLTYPE QueryInterface(REFIID riid, VOID **ppvInterface) {
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if (IID_IUnknown == riid) {
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AddRef();
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*ppvInterface = (IUnknown *)this;
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} else if (__uuidof(IMMNotificationClient) == riid) {
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AddRef();
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*ppvInterface = (IMMNotificationClient *)this;
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} else {
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*ppvInterface = NULL;
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return E_NOINTERFACE;
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}
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnDeviceAdded(LPCWSTR pwstrDeviceId) {
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return S_OK;
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};
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HRESULT STDMETHODCALLTYPE OnDeviceRemoved(LPCWSTR pwstrDeviceId) {
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState) {
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnDefaultDeviceChanged(EDataFlow flow, ERole role, LPCWSTR pwstrDeviceId) {
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if (role == eConsole) {
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if (flow == eRender) {
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default_render_device_changed = true;
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} else if (flow == eCapture) {
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default_capture_device_changed = true;
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}
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}
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnPropertyValueChanged(LPCWSTR pwstrDeviceId, const PROPERTYKEY key) {
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return S_OK;
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}
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};
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static CMMNotificationClient notif_client;
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Error AudioDriverWASAPI::audio_device_init(AudioDeviceWASAPI *p_device, bool p_capture, bool reinit) {
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WAVEFORMATEX *pwfex;
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IMMDeviceEnumerator *enumerator = NULL;
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IMMDevice *device = NULL;
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CoInitialize(NULL);
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HRESULT hr = CoCreateInstance(CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, IID_IMMDeviceEnumerator, (void **)&enumerator);
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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if (p_device->device_name == "Default") {
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hr = enumerator->GetDefaultAudioEndpoint(p_capture ? eCapture : eRender, eConsole, &device);
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} else {
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IMMDeviceCollection *devices = NULL;
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hr = enumerator->EnumAudioEndpoints(p_capture ? eCapture : eRender, DEVICE_STATE_ACTIVE, &devices);
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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LPWSTR strId = NULL;
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bool found = false;
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UINT count = 0;
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hr = devices->GetCount(&count);
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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for (ULONG i = 0; i < count && !found; i++) {
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IMMDevice *tmp_device = NULL;
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hr = devices->Item(i, &tmp_device);
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ERR_BREAK(hr != S_OK);
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IPropertyStore *props = NULL;
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hr = tmp_device->OpenPropertyStore(STGM_READ, &props);
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ERR_BREAK(hr != S_OK);
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PROPVARIANT propvar;
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PropVariantInit(&propvar);
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hr = props->GetValue(PKEY_Device_FriendlyName, &propvar);
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ERR_BREAK(hr != S_OK);
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if (p_device->device_name == String(propvar.pwszVal)) {
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hr = tmp_device->GetId(&strId);
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ERR_BREAK(hr != S_OK);
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found = true;
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}
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PropVariantClear(&propvar);
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props->Release();
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tmp_device->Release();
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}
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if (found) {
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hr = enumerator->GetDevice(strId, &device);
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}
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if (strId) {
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CoTaskMemFree(strId);
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}
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if (device == NULL) {
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hr = enumerator->GetDefaultAudioEndpoint(p_capture ? eCapture : eRender, eConsole, &device);
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}
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}
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if (reinit) {
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// In case we're trying to re-initialize the device prevent throwing this error on the console,
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// otherwise if there is currently no device available this will spam the console.
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if (hr != S_OK) {
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return ERR_CANT_OPEN;
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}
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} else {
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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}
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hr = enumerator->RegisterEndpointNotificationCallback(¬if_client);
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SAFE_RELEASE(enumerator)
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if (hr != S_OK) {
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ERR_PRINT("WASAPI: RegisterEndpointNotificationCallback error");
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}
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hr = device->Activate(IID_IAudioClient, CLSCTX_ALL, NULL, (void **)&p_device->audio_client);
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SAFE_RELEASE(device)
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if (reinit) {
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if (hr != S_OK) {
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return ERR_CANT_OPEN;
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}
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} else {
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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}
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hr = p_device->audio_client->GetMixFormat(&pwfex);
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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print_verbose("WASAPI: wFormatTag = " + itos(pwfex->wFormatTag));
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print_verbose("WASAPI: nChannels = " + itos(pwfex->nChannels));
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print_verbose("WASAPI: nSamplesPerSec = " + itos(pwfex->nSamplesPerSec));
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print_verbose("WASAPI: nAvgBytesPerSec = " + itos(pwfex->nAvgBytesPerSec));
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print_verbose("WASAPI: nBlockAlign = " + itos(pwfex->nBlockAlign));
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print_verbose("WASAPI: wBitsPerSample = " + itos(pwfex->wBitsPerSample));
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print_verbose("WASAPI: cbSize = " + itos(pwfex->cbSize));
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WAVEFORMATEX *closest = NULL;
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hr = p_device->audio_client->IsFormatSupported(AUDCLNT_SHAREMODE_SHARED, pwfex, &closest);
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if (hr == S_FALSE) {
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WARN_PRINT("WASAPI: Mix format is not supported by the Device");
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if (closest) {
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print_verbose("WASAPI: closest->wFormatTag = " + itos(closest->wFormatTag));
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print_verbose("WASAPI: closest->nChannels = " + itos(closest->nChannels));
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print_verbose("WASAPI: closest->nSamplesPerSec = " + itos(closest->nSamplesPerSec));
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print_verbose("WASAPI: closest->nAvgBytesPerSec = " + itos(closest->nAvgBytesPerSec));
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print_verbose("WASAPI: closest->nBlockAlign = " + itos(closest->nBlockAlign));
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print_verbose("WASAPI: closest->wBitsPerSample = " + itos(closest->wBitsPerSample));
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print_verbose("WASAPI: closest->cbSize = " + itos(closest->cbSize));
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WARN_PRINT("WASAPI: Using closest match instead");
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pwfex = closest;
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}
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}
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// Since we're using WASAPI Shared Mode we can't control any of these, we just tag along
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p_device->channels = pwfex->nChannels;
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p_device->format_tag = pwfex->wFormatTag;
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p_device->bits_per_sample = pwfex->wBitsPerSample;
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p_device->frame_size = (p_device->bits_per_sample / 8) * p_device->channels;
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if (p_device->format_tag == WAVE_FORMAT_EXTENSIBLE) {
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WAVEFORMATEXTENSIBLE *wfex = (WAVEFORMATEXTENSIBLE *)pwfex;
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if (wfex->SubFormat == KSDATAFORMAT_SUBTYPE_PCM) {
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p_device->format_tag = WAVE_FORMAT_PCM;
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} else if (wfex->SubFormat == KSDATAFORMAT_SUBTYPE_IEEE_FLOAT) {
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p_device->format_tag = WAVE_FORMAT_IEEE_FLOAT;
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} else {
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ERR_PRINT("WASAPI: Format not supported");
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ERR_FAIL_V(ERR_CANT_OPEN);
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}
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} else {
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if (p_device->format_tag != WAVE_FORMAT_PCM && p_device->format_tag != WAVE_FORMAT_IEEE_FLOAT) {
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ERR_PRINT("WASAPI: Format not supported");
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ERR_FAIL_V(ERR_CANT_OPEN);
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}
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}
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DWORD streamflags = 0;
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if ((DWORD)mix_rate != pwfex->nSamplesPerSec) {
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streamflags |= AUDCLNT_STREAMFLAGS_RATEADJUST;
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pwfex->nSamplesPerSec = mix_rate;
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pwfex->nAvgBytesPerSec = pwfex->nSamplesPerSec * pwfex->nChannels * (pwfex->wBitsPerSample / 8);
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}
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hr = p_device->audio_client->Initialize(AUDCLNT_SHAREMODE_SHARED, streamflags, p_capture ? REFTIMES_PER_SEC : 0, 0, pwfex, NULL);
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ERR_FAIL_COND_V_MSG(hr != S_OK, ERR_CANT_OPEN, "WASAPI: Initialize failed with error 0x" + String::num_uint64(hr, 16) + ".");
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if (p_capture) {
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hr = p_device->audio_client->GetService(IID_IAudioCaptureClient, (void **)&p_device->capture_client);
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} else {
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hr = p_device->audio_client->GetService(IID_IAudioRenderClient, (void **)&p_device->render_client);
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}
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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// Free memory
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CoTaskMemFree(pwfex);
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SAFE_RELEASE(device)
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return OK;
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}
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Error AudioDriverWASAPI::init_render_device(bool reinit) {
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Error err = audio_device_init(&audio_output, false, reinit);
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if (err != OK)
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return err;
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switch (audio_output.channels) {
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case 2: // Stereo
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case 4: // Surround 3.1
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case 6: // Surround 5.1
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case 8: // Surround 7.1
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channels = audio_output.channels;
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break;
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default:
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WARN_PRINTS("WASAPI: Unsupported number of channels: " + itos(audio_output.channels));
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channels = 2;
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break;
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}
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UINT32 max_frames;
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HRESULT hr = audio_output.audio_client->GetBufferSize(&max_frames);
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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// Due to WASAPI Shared Mode we have no control of the buffer size
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buffer_frames = max_frames;
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// Sample rate is independent of channels (ref: https://stackoverflow.com/questions/11048825/audio-sample-frequency-rely-on-channels)
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samples_in.resize(buffer_frames * channels);
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capture_position = 0;
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capture_size = 0;
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print_verbose("WASAPI: detected " + itos(channels) + " channels");
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print_verbose("WASAPI: audio buffer frames: " + itos(buffer_frames) + " calculated latency: " + itos(buffer_frames * 1000 / mix_rate) + "ms");
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return OK;
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}
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Error AudioDriverWASAPI::init_capture_device(bool reinit) {
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Error err = audio_device_init(&audio_input, true, reinit);
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if (err != OK)
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return err;
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// Get the max frames
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UINT32 max_frames;
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HRESULT hr = audio_input.audio_client->GetBufferSize(&max_frames);
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ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
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capture_buffer_init(max_frames);
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return OK;
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}
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Error AudioDriverWASAPI::audio_device_finish(AudioDeviceWASAPI *p_device) {
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if (p_device->active) {
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if (p_device->audio_client) {
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p_device->audio_client->Stop();
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}
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p_device->active = false;
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}
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SAFE_RELEASE(p_device->audio_client)
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SAFE_RELEASE(p_device->render_client)
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SAFE_RELEASE(p_device->capture_client)
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return OK;
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}
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Error AudioDriverWASAPI::finish_render_device() {
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return audio_device_finish(&audio_output);
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}
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Error AudioDriverWASAPI::finish_capture_device() {
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return audio_device_finish(&audio_input);
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}
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Error AudioDriverWASAPI::init() {
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mix_rate = GLOBAL_DEF_RST("audio/mix_rate", DEFAULT_MIX_RATE);
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Error err = init_render_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: init_render_device error");
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}
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exit_thread = false;
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thread_exited = false;
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mutex = Mutex::create(true);
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thread = Thread::create(thread_func, this);
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return OK;
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}
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int AudioDriverWASAPI::get_mix_rate() const {
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return mix_rate;
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}
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AudioDriver::SpeakerMode AudioDriverWASAPI::get_speaker_mode() const {
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return get_speaker_mode_by_total_channels(channels);
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}
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Array AudioDriverWASAPI::audio_device_get_list(bool p_capture) {
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Array list;
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IMMDeviceCollection *devices = NULL;
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IMMDeviceEnumerator *enumerator = NULL;
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list.push_back(String("Default"));
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CoInitialize(NULL);
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HRESULT hr = CoCreateInstance(CLSID_MMDeviceEnumerator, NULL, CLSCTX_ALL, IID_IMMDeviceEnumerator, (void **)&enumerator);
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ERR_FAIL_COND_V(hr != S_OK, Array());
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hr = enumerator->EnumAudioEndpoints(p_capture ? eCapture : eRender, DEVICE_STATE_ACTIVE, &devices);
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ERR_FAIL_COND_V(hr != S_OK, Array());
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UINT count = 0;
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hr = devices->GetCount(&count);
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ERR_FAIL_COND_V(hr != S_OK, Array());
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for (ULONG i = 0; i < count; i++) {
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IMMDevice *device = NULL;
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hr = devices->Item(i, &device);
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ERR_BREAK(hr != S_OK);
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IPropertyStore *props = NULL;
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hr = device->OpenPropertyStore(STGM_READ, &props);
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ERR_BREAK(hr != S_OK);
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PROPVARIANT propvar;
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PropVariantInit(&propvar);
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hr = props->GetValue(PKEY_Device_FriendlyName, &propvar);
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ERR_BREAK(hr != S_OK);
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list.push_back(String(propvar.pwszVal));
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PropVariantClear(&propvar);
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props->Release();
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device->Release();
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}
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devices->Release();
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enumerator->Release();
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return list;
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}
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Array AudioDriverWASAPI::get_device_list() {
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return audio_device_get_list(false);
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}
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String AudioDriverWASAPI::get_device() {
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lock();
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String name = audio_output.device_name;
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unlock();
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return name;
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}
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void AudioDriverWASAPI::set_device(String device) {
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lock();
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audio_output.new_device = device;
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unlock();
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}
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int32_t AudioDriverWASAPI::read_sample(WORD format_tag, int bits_per_sample, BYTE *buffer, int i) {
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if (format_tag == WAVE_FORMAT_PCM) {
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int32_t sample = 0;
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switch (bits_per_sample) {
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case 8:
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sample = int32_t(((int8_t *)buffer)[i]) << 24;
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break;
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case 16:
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sample = int32_t(((int16_t *)buffer)[i]) << 16;
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break;
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case 24:
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sample |= int32_t(((int8_t *)buffer)[i * 3 + 2]) << 24;
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sample |= int32_t(((int8_t *)buffer)[i * 3 + 1]) << 16;
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sample |= int32_t(((int8_t *)buffer)[i * 3 + 0]) << 8;
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break;
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case 32:
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sample = ((int32_t *)buffer)[i];
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break;
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}
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return sample;
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} else if (format_tag == WAVE_FORMAT_IEEE_FLOAT) {
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return int32_t(((float *)buffer)[i] * 32768.0) << 16;
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} else {
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ERR_PRINT("WASAPI: Unknown format tag");
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}
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return 0;
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}
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void AudioDriverWASAPI::write_sample(WORD format_tag, int bits_per_sample, BYTE *buffer, int i, int32_t sample) {
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if (format_tag == WAVE_FORMAT_PCM) {
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switch (bits_per_sample) {
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case 8:
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((int8_t *)buffer)[i] = sample >> 24;
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break;
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case 16:
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((int16_t *)buffer)[i] = sample >> 16;
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break;
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case 24:
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((int8_t *)buffer)[i * 3 + 2] = sample >> 24;
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((int8_t *)buffer)[i * 3 + 1] = sample >> 16;
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((int8_t *)buffer)[i * 3 + 0] = sample >> 8;
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break;
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case 32:
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((int32_t *)buffer)[i] = sample;
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break;
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}
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} else if (format_tag == WAVE_FORMAT_IEEE_FLOAT) {
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((float *)buffer)[i] = (sample >> 16) / 32768.f;
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} else {
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ERR_PRINT("WASAPI: Unknown format tag");
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}
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}
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void AudioDriverWASAPI::thread_func(void *p_udata) {
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AudioDriverWASAPI *ad = (AudioDriverWASAPI *)p_udata;
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uint32_t avail_frames = 0;
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uint32_t write_ofs = 0;
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while (!ad->exit_thread) {
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uint32_t read_frames = 0;
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uint32_t written_frames = 0;
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if (avail_frames == 0) {
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ad->lock();
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ad->start_counting_ticks();
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if (ad->audio_output.active) {
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ad->audio_server_process(ad->buffer_frames, ad->samples_in.ptrw());
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} else {
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for (int i = 0; i < ad->samples_in.size(); i++) {
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ad->samples_in.write[i] = 0;
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}
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}
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avail_frames = ad->buffer_frames;
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write_ofs = 0;
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ad->stop_counting_ticks();
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ad->unlock();
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}
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ad->lock();
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ad->start_counting_ticks();
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if (avail_frames > 0 && ad->audio_output.audio_client) {
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UINT32 cur_frames;
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bool invalidated = false;
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HRESULT hr = ad->audio_output.audio_client->GetCurrentPadding(&cur_frames);
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if (hr == S_OK) {
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// Check how much frames are available on the WASAPI buffer
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UINT32 write_frames = MIN(ad->buffer_frames - cur_frames, avail_frames);
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if (write_frames > 0) {
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BYTE *buffer = NULL;
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hr = ad->audio_output.render_client->GetBuffer(write_frames, &buffer);
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if (hr == S_OK) {
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// We're using WASAPI Shared Mode so we must convert the buffer
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if (ad->channels == ad->audio_output.channels) {
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for (unsigned int i = 0; i < write_frames * ad->channels; i++) {
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ad->write_sample(ad->audio_output.format_tag, ad->audio_output.bits_per_sample, buffer, i, ad->samples_in.write[write_ofs++]);
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}
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} else {
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for (unsigned int i = 0; i < write_frames; i++) {
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for (unsigned int j = 0; j < MIN(ad->channels, ad->audio_output.channels); j++) {
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ad->write_sample(ad->audio_output.format_tag, ad->audio_output.bits_per_sample, buffer, i * ad->audio_output.channels + j, ad->samples_in.write[write_ofs++]);
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}
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if (ad->audio_output.channels > ad->channels) {
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for (unsigned int j = ad->channels; j < ad->audio_output.channels; j++) {
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ad->write_sample(ad->audio_output.format_tag, ad->audio_output.bits_per_sample, buffer, i * ad->audio_output.channels + j, 0);
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}
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}
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}
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}
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hr = ad->audio_output.render_client->ReleaseBuffer(write_frames, 0);
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if (hr != S_OK) {
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ERR_PRINT("WASAPI: Release buffer error");
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}
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avail_frames -= write_frames;
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written_frames += write_frames;
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} else if (hr == AUDCLNT_E_DEVICE_INVALIDATED) {
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// Device is not valid anymore, reopen it
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Error err = ad->finish_render_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: finish_render_device error");
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} else {
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// We reopened the device and samples_in may have resized, so invalidate the current avail_frames
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avail_frames = 0;
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}
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} else {
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ERR_PRINT("WASAPI: Get buffer error");
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ad->exit_thread = true;
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}
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}
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} else if (hr == AUDCLNT_E_DEVICE_INVALIDATED) {
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invalidated = true;
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} else {
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ERR_PRINT("WASAPI: GetCurrentPadding error");
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}
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if (invalidated) {
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// Device is not valid anymore
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WARN_PRINT("WASAPI: Current device invalidated, closing device");
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Error err = ad->finish_render_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: finish_render_device error");
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}
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}
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}
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// If we're using the Default device and it changed finish it so we'll re-init the device
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if (ad->audio_output.device_name == "Default" && default_render_device_changed) {
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Error err = ad->finish_render_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: finish_render_device error");
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}
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default_render_device_changed = false;
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}
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// User selected a new device, finish the current one so we'll init the new device
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if (ad->audio_output.device_name != ad->audio_output.new_device) {
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ad->audio_output.device_name = ad->audio_output.new_device;
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Error err = ad->finish_render_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: finish_render_device error");
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}
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}
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if (!ad->audio_output.audio_client) {
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Error err = ad->init_render_device(true);
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if (err == OK) {
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ad->start();
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}
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avail_frames = 0;
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write_ofs = 0;
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}
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if (ad->audio_input.active) {
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UINT32 packet_length = 0;
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BYTE *data;
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UINT32 num_frames_available;
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DWORD flags;
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HRESULT hr = ad->audio_input.capture_client->GetNextPacketSize(&packet_length);
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if (hr == S_OK) {
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while (packet_length != 0) {
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hr = ad->audio_input.capture_client->GetBuffer(&data, &num_frames_available, &flags, NULL, NULL);
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ERR_BREAK(hr != S_OK);
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// fixme: Only works for floating point atm
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for (UINT32 j = 0; j < num_frames_available; j++) {
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int32_t l, r;
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if (flags & AUDCLNT_BUFFERFLAGS_SILENT) {
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l = r = 0;
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} else {
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if (ad->audio_input.channels == 2) {
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l = read_sample(ad->audio_input.format_tag, ad->audio_input.bits_per_sample, data, j * 2);
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r = read_sample(ad->audio_input.format_tag, ad->audio_input.bits_per_sample, data, j * 2 + 1);
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} else if (ad->audio_input.channels == 1) {
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l = r = read_sample(ad->audio_input.format_tag, ad->audio_input.bits_per_sample, data, j);
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} else {
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l = r = 0;
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ERR_PRINT("WASAPI: unsupported channel count in microphone!");
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}
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}
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ad->capture_buffer_write(l);
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ad->capture_buffer_write(r);
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}
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read_frames += num_frames_available;
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hr = ad->audio_input.capture_client->ReleaseBuffer(num_frames_available);
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ERR_BREAK(hr != S_OK);
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hr = ad->audio_input.capture_client->GetNextPacketSize(&packet_length);
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ERR_BREAK(hr != S_OK);
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}
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}
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// If we're using the Default device and it changed finish it so we'll re-init the device
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if (ad->audio_input.device_name == "Default" && default_capture_device_changed) {
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Error err = ad->finish_capture_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: finish_capture_device error");
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}
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default_capture_device_changed = false;
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}
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// User selected a new device, finish the current one so we'll init the new device
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if (ad->audio_input.device_name != ad->audio_input.new_device) {
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ad->audio_input.device_name = ad->audio_input.new_device;
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Error err = ad->finish_capture_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: finish_capture_device error");
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}
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}
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if (!ad->audio_input.audio_client) {
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Error err = ad->init_capture_device(true);
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if (err == OK) {
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ad->capture_start();
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}
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}
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}
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ad->stop_counting_ticks();
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ad->unlock();
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// Let the thread rest a while if we haven't read or write anything
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if (written_frames == 0 && read_frames == 0) {
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OS::get_singleton()->delay_usec(1000);
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}
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}
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ad->thread_exited = true;
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}
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void AudioDriverWASAPI::start() {
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if (audio_output.audio_client) {
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HRESULT hr = audio_output.audio_client->Start();
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if (hr != S_OK) {
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ERR_PRINT("WASAPI: Start failed");
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} else {
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audio_output.active = true;
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}
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}
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}
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void AudioDriverWASAPI::lock() {
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if (mutex)
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mutex->lock();
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}
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void AudioDriverWASAPI::unlock() {
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if (mutex)
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mutex->unlock();
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}
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void AudioDriverWASAPI::finish() {
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if (thread) {
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exit_thread = true;
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Thread::wait_to_finish(thread);
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memdelete(thread);
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thread = NULL;
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}
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finish_capture_device();
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finish_render_device();
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if (mutex) {
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memdelete(mutex);
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mutex = NULL;
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}
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}
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Error AudioDriverWASAPI::capture_start() {
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Error err = init_capture_device();
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if (err != OK) {
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ERR_PRINT("WASAPI: init_capture_device error");
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return err;
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}
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if (audio_input.active) {
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return FAILED;
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}
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audio_input.audio_client->Start();
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audio_input.active = true;
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return OK;
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}
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Error AudioDriverWASAPI::capture_stop() {
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if (audio_input.active) {
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audio_input.audio_client->Stop();
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audio_input.active = false;
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return OK;
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}
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return FAILED;
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}
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void AudioDriverWASAPI::capture_set_device(const String &p_name) {
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lock();
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audio_input.new_device = p_name;
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unlock();
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}
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Array AudioDriverWASAPI::capture_get_device_list() {
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return audio_device_get_list(true);
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}
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String AudioDriverWASAPI::capture_get_device() {
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lock();
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String name = audio_input.device_name;
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unlock();
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return name;
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}
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AudioDriverWASAPI::AudioDriverWASAPI() {
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mutex = NULL;
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thread = NULL;
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samples_in.clear();
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channels = 0;
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mix_rate = 0;
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buffer_frames = 0;
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thread_exited = false;
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exit_thread = false;
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}
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#endif
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