From 88adb6513ea5c40436709bbf485823175cd73d22 Mon Sep 17 00:00:00 2001
From: bruvzg <7645683+bruvzg@users.noreply.github.com>
Date: Thu, 13 Oct 2022 22:49:24 +0300
Subject: [PATCH] Detect Wine and disable unsupported IAudioClient3 interface.

---
 drivers/wasapi/audio_driver_wasapi.cpp | 23 +++++++++++++++++++++++
 drivers/wasapi/audio_driver_wasapi.h   |  2 ++
 2 files changed, 25 insertions(+)

diff --git a/drivers/wasapi/audio_driver_wasapi.cpp b/drivers/wasapi/audio_driver_wasapi.cpp
index fb90b776cfc0..d6636606d225 100644
--- a/drivers/wasapi/audio_driver_wasapi.cpp
+++ b/drivers/wasapi/audio_driver_wasapi.cpp
@@ -127,6 +127,11 @@ static bool default_capture_device_changed = false;
 #pragma GCC diagnostic ignored "-Wnon-virtual-dtor"
 #endif
 
+#if defined(__GNUC__)
+// Workaround GCC warning from -Wcast-function-type.
+#define GetProcAddress (void *)GetProcAddress
+#endif
+
 class CMMNotificationClient : public IMMNotificationClient {
 	LONG _cRef = 1;
 	IMMDeviceEnumerator *_pEnumerator = nullptr;
@@ -201,6 +206,20 @@ public:
 
 static CMMNotificationClient notif_client;
 
+typedef const char *(CDECL *PWineGetVersionPtr)(void);
+
+bool AudioDriverWASAPI::is_running_on_wine() {
+	HMODULE nt_lib = LoadLibraryW(L"ntdll.dll");
+	if (!nt_lib) {
+		return false;
+	}
+
+	PWineGetVersionPtr wine_get_version = (PWineGetVersionPtr)GetProcAddress(nt_lib, "wine_get_version");
+	FreeLibrary(nt_lib);
+
+	return (bool)wine_get_version;
+}
+
 Error AudioDriverWASAPI::audio_device_init(AudioDeviceWASAPI *p_device, bool p_capture, bool reinit) {
 	WAVEFORMATEX *pwfex;
 	IMMDeviceEnumerator *enumerator = nullptr;
@@ -285,6 +304,10 @@ Error AudioDriverWASAPI::audio_device_init(AudioDeviceWASAPI *p_device, bool p_c
 	}
 
 	using_audio_client_3 = !p_capture; // IID_IAudioClient3 is only used for adjustable output latency (not input)
+	if (using_audio_client_3 && is_running_on_wine()) {
+		using_audio_client_3 = false;
+		print_verbose("WASAPI: Wine detected, falling back to IAudioClient interface");
+	}
 	if (using_audio_client_3) {
 		hr = device->Activate(IID_IAudioClient3, CLSCTX_ALL, nullptr, (void **)&p_device->audio_client);
 		if (hr != S_OK) {
diff --git a/drivers/wasapi/audio_driver_wasapi.h b/drivers/wasapi/audio_driver_wasapi.h
index c30a54c042d7..e9f2794e971d 100644
--- a/drivers/wasapi/audio_driver_wasapi.h
+++ b/drivers/wasapi/audio_driver_wasapi.h
@@ -79,6 +79,8 @@ class AudioDriverWASAPI : public AudioDriver {
 
 	SafeFlag exit_thread;
 
+	static bool is_running_on_wine();
+
 	static _FORCE_INLINE_ void write_sample(WORD format_tag, int bits_per_sample, BYTE *buffer, int i, int32_t sample);
 	static _FORCE_INLINE_ int32_t read_sample(WORD format_tag, int bits_per_sample, BYTE *buffer, int i);
 	static void thread_func(void *p_udata);