Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 187 insertions, 0 deletions

diff --git a/widget/gtk/MPRISServiceHandler.h b/widget/gtk/MPRISServiceHandler.h
new file mode 100644
index 0000000000..f2b171c87e
--- /dev/null
+++ b/widget/gtk/MPRISServiceHandler.h
@@ -0,0 +1,187 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef WIDGET_GTK_MPRIS_SERVICE_HANDLER_H_
+#define WIDGET_GTK_MPRIS_SERVICE_HANDLER_H_
+
+#include <gio/gio.h>
+#include "mozilla/dom/FetchImageHelper.h"
+#include "mozilla/dom/MediaControlKeySource.h"
+#include "mozilla/Attributes.h"
+#include "mozilla/UniquePtr.h"
+#include "nsIFile.h"
+#include "nsMimeTypes.h"
+#include "nsString.h"
+
+#define DBUS_MPRIS_SERVICE_NAME "org.mpris.MediaPlayer2.firefox"
+#define DBUS_MPRIS_OBJECT_PATH "/org/mpris/MediaPlayer2"
+#define DBUS_MPRIS_INTERFACE "org.mpris.MediaPlayer2"
+#define DBUS_MPRIS_PLAYER_INTERFACE "org.mpris.MediaPlayer2.Player"
+#define DBUS_MPRIS_TRACK_PATH "/org/mpris/MediaPlayer2/firefox"
+
+namespace mozilla {
+namespace widget {
+
+/**
+ * This class implements the "MPRIS" D-Bus Service
+ * (https://specifications.freedesktop.org/mpris-spec/2.2),
+ * which is used to communicate with the Desktop Environment about the
+ * Multimedia playing in Gecko.
+ * Note that this interface requires many methods which may not be supported by
+ * Gecko, the interface
+ * however provides CanXYZ properties for these methods, so the method is
+ * defined but won't be executed.
+ *
+ * Also note that the following defines are for parts that the MPRIS Spec
+ * defines optional. The code won't
+ * compile with any of the defines set, yet, as those aren't implemented yet and
+ * probably never will be of
+ * use for gecko. For sake of completeness, they have been added until the
+ * decision about their implementation
+ * is finally made.
+ *
+ * The constexpr'ed methods are capabilities of the user agent known at compile
+ * time, e.g. we decided at
+ * compile time whether we ever want to support closing the user agent via MPRIS
+ * (Quit() and CanQuit()).
+ *
+ * Other properties like CanPlay() might depend on the runtime state (is there
+ * media available for playback?)
+ * and thus aren't a constexpr but merely a const method.
+ */
+class MPRISServiceHandler final : public dom::MediaControlKeySource {
+  NS_INLINE_DECL_REFCOUNTING(MPRISServiceHandler, override)
+ public:
+  // Note that this constructor does NOT initialize the MPRIS Service but only
+  // this class. The method Open() is responsible for registering and MAY FAIL.
+
+  MPRISServiceHandler();
+  bool Open() override;
+  void Close() override;
+  bool IsOpened() const override;
+
+  // From the EventSource.
+  void SetPlaybackState(dom::MediaSessionPlaybackState aState) override;
+
+  // GetPlaybackState returns dom::PlaybackState. GetPlaybackStatus returns this
+  // state converted into d-bus variants.
+  GVariant* GetPlaybackStatus() const;
+
+  const char* Identity() const;
+  const char* DesktopEntry() const;
+  bool PressKey(dom::MediaControlKey aKey) const;
+
+  void SetMediaMetadata(const dom::MediaMetadataBase& aMetadata) override;
+  GVariant* GetMetadataAsGVariant() const;
+
+  void SetSupportedMediaKeys(const MediaKeysArray& aSupportedKeys) override;
+
+  bool IsMediaKeySupported(dom::MediaControlKey aKey) const;
+
+ private:
+  ~MPRISServiceHandler();
+
+  // Note: Registration Ids for the D-Bus start with 1, so a value of 0
+  // indicates an error (or an object which wasn't initialized yet)
+
+  // a handle to our bus registration/ownership
+  guint mOwnerId = 0;
+  // This is for the interface org.mpris.MediaPlayer2
+  guint mRootRegistrationId = 0;
+  // This is for the interface org.mpris.MediaPlayer2.Player
+  guint mPlayerRegistrationId = 0;
+  RefPtr<GDBusNodeInfo> mIntrospectionData;
+  GDBusConnection* mConnection = nullptr;
+  bool mInitialized = false;
+  nsAutoCString mIdentity;
+  nsAutoCString mDesktopEntry;
+
+  // The image format used in MPRIS is based on the mMimeType here. Although
+  // IMAGE_JPEG or IMAGE_BMP are valid types as well but a png image with
+  // transparent background will be converted into a jpeg/bmp file with a
+  // colored background IMAGE_PNG format seems to be the best choice for now.
+  nsCString mMimeType{IMAGE_PNG};
+
+  // A bitmask indicating what keys are enabled
+  uint32_t mSupportedKeys = 0;
+
+  class MPRISMetadata : public dom::MediaMetadataBase {
+   public:
+    MPRISMetadata() = default;
+    ~MPRISMetadata() = default;
+
+    void UpdateFromMetadataBase(const dom::MediaMetadataBase& aMetadata) {
+      mTitle = aMetadata.mTitle;
+      mArtist = aMetadata.mArtist;
+      mAlbum = aMetadata.mAlbum;
+      mArtwork = aMetadata.mArtwork;
+    }
+    void Clear() {
+      UpdateFromMetadataBase(MediaMetadataBase::EmptyData());
+      mArtUrl.Truncate();
+    }
+
+    nsCString mArtUrl;
+  };
+  MPRISMetadata mMPRISMetadata;
+
+  // The saved image file fetched from the URL
+  nsCOMPtr<nsIFile> mLocalImageFile;
+  nsCOMPtr<nsIFile> mLocalImageFolder;
+
+  UniquePtr<dom::FetchImageHelper> mImageFetcher;
+  MozPromiseRequestHolder<dom::ImagePromise> mImageFetchRequest;
+
+  nsString mFetchingUrl;
+  nsString mCurrentImageUrl;
+
+  size_t mNextImageIndex = 0;
+
+  // Load the image at index aIndex of the metadta's artwork to MPRIS
+  // asynchronously
+  void LoadImageAtIndex(const size_t aIndex);
+  bool SetImageToDisplay(const char* aImageData, uint32_t aDataSize);
+
+  bool RenewLocalImageFile(const char* aImageData, uint32_t aDataSize);
+  bool InitLocalImageFile();
+  bool InitLocalImageFolder();
+  void RemoveAllLocalImages();
+  bool LocalImageFolderExists();
+
+  // Queries nsAppInfo to get the branded browser name and vendor
+  void InitIdentity();
+
+  // non-public API, called from events
+  void OnNameAcquired(GDBusConnection* aConnection, const gchar* aName);
+  void OnNameLost(GDBusConnection* aConnection, const gchar* aName);
+  void OnBusAcquired(GDBusConnection* aConnection, const gchar* aName);
+
+  static void OnNameAcquiredStatic(GDBusConnection* aConnection,
+                                   const gchar* aName, gpointer aUserData);
+  static void OnNameLostStatic(GDBusConnection* aConnection, const gchar* aName,
+                               gpointer aUserData);
+  static void OnBusAcquiredStatic(GDBusConnection* aConnection,
+                                  const gchar* aName, gpointer aUserData);
+
+  void EmitEvent(dom::MediaControlKey aKey) const;
+
+  bool EmitMetadataChanged() const;
+
+  void SetMediaMetadataInternal(const dom::MediaMetadataBase& aMetadata,
+                                bool aClearArtUrl = true);
+
+  bool EmitSupportedKeyChanged(dom::MediaControlKey aKey,
+                               bool aSupported) const;
+
+  bool EmitPropertiesChangedSignal(GVariant* aParameters) const;
+
+  void ClearMetadata();
+};
+
+}  // namespace widget
+}  // namespace mozilla
+
+#endif  // WIDGET_GTK_MPRIS_SERVICE_HANDLER_H_