Added: Voicemeeter audio processing support. When Voicemeeter is installed, it can be selected in the Configurator.
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jthedering committed
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#include "stdafx.h"
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#include <string>
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include <shellapi.h>
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#include "helpers/RegistryHelper.h"
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#include "VoicemeeterClient.h"
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#include "VoicemeeterAPOInfo.h"
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#define voicemeeterKeyPath L"HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\VB:Voicemeeter {17359A74-1236-5467}"
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#define voicemeeterWowKeyPath L"HKEY_LOCAL_MACHINE\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\VB:Voicemeeter {17359A74-1236-5467}"
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#define uninstallStringValueName L"UninstallString"
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using namespace std;
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long __stdcall callback(void* lpUser, long nCommand, void* lpData, long nnn);
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int APIENTRY wWinMain(_In_ HINSTANCE hInstance,
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_In_opt_ HINSTANCE hPrevInstance,
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_In_ LPTSTR lpCmdLine,
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_In_ int nCmdShow)
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{
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vector<wstring> outputs;
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if (lpCmdLine[0] != 0)
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{
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int argc;
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wchar_t** argv = CommandLineToArgvW(lpCmdLine, &argc);
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for (int i = 0; i < argc; i++)
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outputs.push_back(argv[i]);
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LocalFree(argv);
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}
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VoicemeeterClient* client = new VoicemeeterClient(outputs);
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MSG msg;
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msg.wParam = 0;
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bool loop = client->restart;
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while (loop)
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{
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client->start();
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client->restart = false;
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while (GetMessage(&msg, NULL, 0, 0))
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{
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TranslateMessage(&msg);
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DispatchMessage(&msg);
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}
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loop = client->restart;
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client->stop();
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}
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delete client;
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return (int)msg.wParam;
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}
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VoicemeeterClient::VoicemeeterClient(const vector<wstring>& outputs)
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: outputs(outputs)
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{
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mainThreadId = GetCurrentThreadId();
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wstring voicemeeterDirectory;
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if (RegistryHelper::keyExists(voicemeeterKeyPath))
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voicemeeterDirectory = RegistryHelper::readValue(voicemeeterKeyPath, uninstallStringValueName);
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else if (RegistryHelper::keyExists(voicemeeterWowKeyPath))
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voicemeeterDirectory = RegistryHelper::readValue(voicemeeterWowKeyPath, uninstallStringValueName);
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size_t index = voicemeeterDirectory.find_last_of(L'\\');
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HMODULE voicemeeterModule = NULL;
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if (index != wstring::npos)
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{
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wstring setupFilename = voicemeeterDirectory.substr(index + 1);
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banana = (setupFilename == L"VoicemeeterProSetup.exe");
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voicemeeterDirectory = voicemeeterDirectory.substr(0, index);
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#ifdef _WIN64
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voicemeeterModule = LoadLibraryW((voicemeeterDirectory + L"\\VoicemeeterRemote64.dll").c_str());
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#else
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voicemeeterModule = LoadLibraryW((voicemeeterDirectory + L"\\VoicemeeterRemote.dll").c_str());
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#endif
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}
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memset(&vmr, 0, sizeof(T_VBVMR_INTERFACE));
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#define LOAD_PROC(proc) vmr.proc = (T_ ## proc)GetProcAddress(voicemeeterModule, # proc)
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if (voicemeeterModule != NULL)
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{
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LOAD_PROC(VBVMR_Login);
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LOAD_PROC(VBVMR_Logout);
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LOAD_PROC(VBVMR_AudioCallbackRegister);
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LOAD_PROC(VBVMR_AudioCallbackStart);
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LOAD_PROC(VBVMR_AudioCallbackStop);
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LOAD_PROC(VBVMR_AudioCallbackUnregister);
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LOAD_PROC(VBVMR_GetVoicemeeterType);
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restart = true;
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}
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}
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VoicemeeterClient::~VoicemeeterClient()
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{
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if (loggedIn)
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{
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vmr.VBVMR_Logout();
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loggedIn = false;
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}
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}
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void VoicemeeterClient::start()
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{
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if (!loggedIn)
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loggedIn = (vmr.VBVMR_Login() == 0);
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if (loggedIn)
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{
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long type;
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if (vmr.VBVMR_GetVoicemeeterType(&type) == 0)
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banana = (type == 2);
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}
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unsigned outputCount;
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if (banana)
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outputCount = 3;
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else
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outputCount = 1;
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for (unsigned i = 0; i < outputCount; i++)
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{
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wstringstream sstream;
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sstream << "Output A" << (i + 1);
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wstring output = sstream.str();
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if (find(outputs.begin(), outputs.end(), output) != outputs.end())
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{
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FilterEngine* engine = new FilterEngine();
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engine->setDeviceInfo(false, true, L"Voicemeeter", output, L"", L"Voicemeeter " + output);
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engines.push_back(engine);
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}
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else
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{
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engines.push_back(NULL);
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}
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idleSampleCounts.push_back(0);
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}
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if (vmr.VBVMR_AudioCallbackRegister(VBVMR_AUDIOCALLBACK_OUT, callback, this, "Equalizer APO") != 0)
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{
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PostThreadMessage(mainThreadId, WM_QUIT, 0, 0);
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return;
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}
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vmr.VBVMR_AudioCallbackStart();
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}
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void VoicemeeterClient::stop()
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{
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vmr.VBVMR_AudioCallbackStop();
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vmr.VBVMR_AudioCallbackUnregister();
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idleSampleCounts.clear();
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for (FilterEngine* engine : engines)
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if (engine != NULL)
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delete engine;
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engines.clear();
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}
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void VoicemeeterClient::handle(long nCommand, void* lpData, long nnn)
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{
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switch (nCommand)
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{
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case VBVMR_CBCOMMAND_STARTING:
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{
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VBVMR_LPT_AUDIOINFO audioInfo = (VBVMR_LPT_AUDIOINFO)lpData;
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for (FilterEngine* engine : engines)
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if (engine != NULL)
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engine->initialize((float)audioInfo->samplerate, 8, 8, 8, 0, audioInfo->nbSamplePerFrame);
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VoicemeeterAPOInfo::saveVoicemeeterSampleRate((unsigned)audioInfo->samplerate);
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}
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break;
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case VBVMR_CBCOMMAND_ENDING:
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{
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restart = true;
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PostThreadMessage(mainThreadId, WM_QUIT, 0, 0);
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}
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break;
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case VBVMR_CBCOMMAND_CHANGE:
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{
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VBVMR_LPT_AUDIOINFO audioInfo = (VBVMR_LPT_AUDIOINFO)lpData;
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for (FilterEngine* engine : engines)
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if (engine != NULL)
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engine->initialize((float)audioInfo->samplerate, 8, 8, 8, 0, audioInfo->nbSamplePerFrame);
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VoicemeeterAPOInfo::saveVoicemeeterSampleRate((unsigned)audioInfo->samplerate);
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}
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break;
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case VBVMR_CBCOMMAND_BUFFER_OUT:
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{
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VBVMR_LPT_AUDIOBUFFER audioBuffer = (VBVMR_LPT_AUDIOBUFFER)lpData;
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int nbi = audioBuffer->audiobuffer_nbi;
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int nbo = audioBuffer->audiobuffer_nbo;
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int n = min(nbi, nbo) / 8;
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for (int i = 0; i < n; i++)
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{
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FilterEngine* engine = NULL;
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if (i < engines.size())
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engine = engines[i];
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bool idle = true;
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bool inputSilent = true;
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if (engine != NULL)
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{
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inputSilent = isBufferSilent(audioBuffer->audiobuffer_r + 8 * i, audioBuffer->audiobuffer_nbs);
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idle = inputSilent && idleSampleCounts[i] > 10 * engine->getSampleRate();
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}
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// avoid processing when idle (Voicemeeter does still call this when no audio is played)
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if (!idle)
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{
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engine->process(audioBuffer->audiobuffer_w + 8 * i, audioBuffer->audiobuffer_r + 8 * i, audioBuffer->audiobuffer_nbs);
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bool outputSilent = isBufferSilent(audioBuffer->audiobuffer_w + 8 * i, audioBuffer->audiobuffer_nbs);
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if (inputSilent && outputSilent)
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idleSampleCounts[i] += audioBuffer->audiobuffer_nbs;
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else
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idleSampleCounts[i] = 0;
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}
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else
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{
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for (int j = 0; j < 8; j++)
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memcpy(audioBuffer->audiobuffer_w[8 * i + j], audioBuffer->audiobuffer_r[8 * i + j], audioBuffer->audiobuffer_nbs * sizeof(float));
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}
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}
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}
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break;
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}
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}
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bool VoicemeeterClient::isBufferSilent(float** sampleData, long sampleCount)
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{
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bool silent = true;
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for (int j = 0; j < 8; j++)
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{
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float* buf = sampleData[j];
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for (int k = 0; k < sampleCount; k++)
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{
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if (buf[k] != 0.0f)
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{
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silent = false;
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break;
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}
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}
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}
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return silent;
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}
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long __stdcall callback(void* lpUser, long nCommand, void* lpData, long nnn)
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{
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VoicemeeterClient* client = (VoicemeeterClient*)lpUser;
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client->handle(nCommand, lpData, nnn);
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return 0;
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}
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