Add ASIO device finder

src/CMakeLists.txt

@@ -850,7 +850,7 @@ optional_source(WIN32
   HEADERS
     core/windows7thumbbar.h
 )
-optional_source(MSVC SOURCES engine/uwpdevicefinder.cpp)
+optional_source(MSVC SOURCES engine/uwpdevicefinder.cpp engine/asiodevicefinder.cpp)
 
 optional_source(HAVE_SUBSONIC
   SOURCES

src/engine/asiodevicefinder.cpp

@@ -0,0 +1,92 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2024, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include <windows.h>
+#include <string.h>
+#include <atlconv.h>
+#include <winreg.h>
+
+#include <QString>
+
+#include "asiodevicefinder.h"
+#include "enginedevice.h"
+#include "core/logging.h"
+
+AsioDeviceFinder::AsioDeviceFinder() : DeviceFinder("asio", { "asiosink" }) {}
+
+EngineDeviceList AsioDeviceFinder::ListDevices() {
+
+  EngineDeviceList devices;
+
+  HKEY reg_key = nullptr;
+  LSTATUS status = RegOpenKeyExW(HKEY_LOCAL_MACHINE, L"software\\asio", 0, KEY_READ, &reg_key);
+
+  for (DWORD i = 0; status == ERROR_SUCCESS; i++) {
+    WCHAR key_name[256];
+    status = RegEnumKeyW(reg_key, i, key_name, sizeof(key_name));
+    EngineDevice device = GetDevice(reg_key, key_name);
+    if (device.value.isValid()) {
+      devices.append(device);
+    }
+  }
+
+  if (reg_key) {
+    RegCloseKey(reg_key);
+  }
+
+  return devices;
+
+}
+
+EngineDevice AsioDeviceFinder::GetDevice(HKEY reg_key, LPWSTR key_name) {
+
+  HKEY sub_key = nullptr;
+  const QScopeGuard scopeguard_sub_key = qScopeGuard([sub_key]() {
+    if (sub_key) {
+      RegCloseKey(sub_key);
+    }
+  });
+
+  LSTATUS status = RegOpenKeyExW(reg_key, key_name, 0, KEY_READ, &sub_key);
+  if (status != ERROR_SUCCESS) {
+    return EngineDevice();
+  }
+
+  DWORD type = REG_SZ;
+  WCHAR clsid_data[256]{};
+  DWORD clsid_data_size = sizeof(clsid_data);
+  status = RegQueryValueExW(sub_key, L"clsid", 0, &type, (LPBYTE)clsid_data, &clsid_data_size);
+  if (status != ERROR_SUCCESS) {
+    return EngineDevice();
+  }
+
+  EngineDevice device;
+  device.value = QString::fromStdWString(clsid_data);
+  device.description = QString::fromStdWString(key_name);
+
+  WCHAR desc_data[256]{};
+  DWORD desc_data_size = sizeof(desc_data);
+  status = RegQueryValueExW(sub_key, L"description", 0, &type, (LPBYTE)desc_data, &desc_data_size);
+  if (status == ERROR_SUCCESS) {
+    device.description = QString::fromStdWString(desc_data);
+  }
+
+  return device;
+
+}

src/engine/asiodevicefinder.h

@@ -0,0 +1,41 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2024, Jonas Kvinge <jonas@jkvinge.net>
+ *
+ * Strawberry is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Strawberry 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Strawberry.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef ASIODEVICEFINDER_H
+#define ASIODEVICEFINDER_H
+
+#include "config.h"
+
+#include <windows.h>
+
+#include "devicefinder.h"
+#include "enginedevice.h"
+
+class AsioDeviceFinder : public DeviceFinder {
+ public:
+  explicit AsioDeviceFinder();
+
+  virtual bool Initialize() { return true; }
+  virtual EngineDeviceList ListDevices();
+
+ private:
+  EngineDevice GetDevice(HKEY reg_key, LPWSTR key_name);
+};
+
+#endif  // ASIODEVICEFINDER_H

src/engine/devicefinders.cpp

@@ -45,6 +45,7 @@
 #  include "mmdevicefinder.h"
 #  ifdef _MSC_VER
 #    include "uwpdevicefinder.h"
+#    include "asiodevicefinder.h"
 #  endif  // _MSC_VER
 #endif  // Q_OS_WIN32
 
@@ -73,6 +74,7 @@ void DeviceFinders::Init() {
   device_finders.append(new MMDeviceFinder);
 #  ifdef _MSC_VER
   device_finders.append(new UWPDeviceFinder);
+  device_finders.append(new AsioDeviceFinder);
 #  endif  // _MSC_VER
 #endif  // Q_OS_WIN32