Rename EngineDevice --> DeviceFinders, Add MMDeviceFinder

src/engine/mmdevicefinder.cpp

@@ -0,0 +1,115 @@
+/*
+ * Strawberry Music Player
+ * Copyright 2019, 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 "config.h"
+
+#include <initguid.h>
+#include <devpkey.h>
+#include <functiondiscoverykeys_devpkey.h>
+#include <mmdeviceapi.h>
+
+#include <QList>
+#include <QVariant>
+#include <QString>
+
+#include "mmdevicefinder.h"
+#include "core/logging.h"
+
+MMDeviceFinder::MMDeviceFinder() : DeviceFinder("mmdevice", { "wasapisink" }) {}
+
+QList<DeviceFinder::Device> MMDeviceFinder::ListDevices() {
+
+  HRESULT hr = S_OK;
+
+  IMMDeviceEnumerator *enumerator = nullptr;
+  hr = CoCreateInstance(CLSID_MMDeviceEnumerator, nullptr, CLSCTX_ALL, IID_IMMDeviceEnumerator, (void**)&enumerator);
+  if (FAILED(hr)) {
+    return QList<Device>();
+  }
+
+  IMMDeviceCollection *collection = nullptr;
+  hr = enumerator->EnumAudioEndpoints(eRender, DEVICE_STATE_ACTIVE, &collection);
+  if (FAILED(hr)) {
+    enumerator->Release();
+    return QList<Device>();
+  }
+
+  UINT count;
+  hr = collection->GetCount(&count);
+  if (FAILED(hr)) {
+    collection->Release();
+    enumerator->Release();
+    return QList<Device>();
+  }
+
+  QList<Device> devices;
+  Device default_device;
+  default_device.description = "Default device";
+  default_device.iconname = GuessIconName(default_device.description);
+  devices.append(default_device);
+
+  for (ULONG i = 0 ; i < count ; i++) {
+
+    IMMDevice *endpoint = nullptr;
+    hr = collection->Item(i, &endpoint);
+    if (FAILED(hr)) { return devices; }
+
+    LPWSTR pwszid = nullptr;
+    hr = endpoint->GetId(&pwszid);
+    if (FAILED(hr)) {
+      endpoint->Release();
+      continue;
+    }
+
+    IPropertyStore *props = nullptr;
+    hr = endpoint->OpenPropertyStore(STGM_READ, &props);
+    if (FAILED(hr)) {
+      CoTaskMemFree(pwszid);
+      endpoint->Release();
+      continue;
+    }
+
+    PROPVARIANT var_name;
+    PropVariantInit(&var_name);
+    hr = props->GetValue(PKEY_Device_FriendlyName, &var_name);
+    if (FAILED(hr)) {
+      props->Release();
+      CoTaskMemFree(pwszid);
+      endpoint->Release();
+      continue;
+    }
+
+    Device device;
+    device.description = QString::fromWCharArray(var_name.pwszVal);
+    device.iconname = GuessIconName(device.description);
+    device.value = QString::fromStdWString(pwszid);
+    devices.append(device);
+
+    PropVariantClear(&var_name);
+    props->Release();
+    CoTaskMemFree(pwszid);
+    endpoint->Release();
+
+  }
+  collection->Release();
+  enumerator->Release();
+
+  return devices;
+
+}