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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /gfx/layers/ipc/TextureForwarder.h
parentInitial commit. (diff)
downloadfirefox-e51783d008170d9ab27d25da98ca3a38b0a41b67.tar.xz
firefox-e51783d008170d9ab27d25da98ca3a38b0a41b67.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'gfx/layers/ipc/TextureForwarder.h')
-rw-r--r--gfx/layers/ipc/TextureForwarder.h92
1 files changed, 92 insertions, 0 deletions
diff --git a/gfx/layers/ipc/TextureForwarder.h b/gfx/layers/ipc/TextureForwarder.h
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 MOZILLA_LAYERS_TEXTUREFORWARDER
+#define MOZILLA_LAYERS_TEXTUREFORWARDER
+
+#include <stdint.h> // for int32_t, uint64_t
+#include "gfxTypes.h"
+#include "mozilla/dom/ipc/IdType.h"
+#include "mozilla/ipc/ProtocolUtils.h"
+#include "mozilla/layers/LayersMessages.h" // for Edit, etc
+#include "mozilla/layers/LayersTypes.h" // for LayersBackend
+#include "mozilla/layers/TextureClient.h" // for TextureClient
+#include "mozilla/layers/KnowsCompositor.h"
+#include "nsISerialEventTarget.h"
+
+namespace mozilla {
+namespace layers {
+class CanvasChild;
+
+/**
+ * An abstract interface for classes that implement the autogenerated
+ * IPDL actor class. Lets us check if they are still valid for IPC.
+ */
+class LayersIPCActor {
+ public:
+ virtual bool IPCOpen() const { return true; }
+};
+
+/**
+ * An abstract interface for LayersIPCActors that implement a top-level
+ * IPDL protocol so also have their own channel.
+ * Has their own MessageLoop for message dispatch, and can allocate
+ * shmem.
+ */
+class LayersIPCChannel : public LayersIPCActor,
+ public mozilla::ipc::IShmemAllocator {
+ public:
+ NS_INLINE_DECL_PURE_VIRTUAL_REFCOUNTING
+
+ virtual bool IsSameProcess() const = 0;
+
+ virtual bool UsesImageBridge() const { return false; }
+
+ virtual base::ProcessId GetParentPid() const = 0;
+
+ virtual nsISerialEventTarget* GetThread() const = 0;
+
+ virtual FixedSizeSmallShmemSectionAllocator* GetTileLockAllocator() {
+ return nullptr;
+ }
+
+ virtual void CancelWaitForNotifyNotUsed(uint64_t aTextureId) = 0;
+
+ virtual wr::MaybeExternalImageId GetNextExternalImageId() {
+ return Nothing();
+ }
+
+ protected:
+ virtual ~LayersIPCChannel() = default;
+};
+
+/**
+ * An abstract interface for classes that can allocate PTexture objects
+ * across IPDL. Currently a sub-class of LayersIPCChannel for simplicity
+ * since all our implementations use both, but could be independant if needed.
+ */
+class TextureForwarder : public LayersIPCChannel {
+ public:
+ /**
+ * Create a TextureChild/Parent pair as as well as the TextureHost on the
+ * parent side.
+ */
+ virtual PTextureChild* CreateTexture(
+ const SurfaceDescriptor& aSharedData, ReadLockDescriptor&& aReadLock,
+ LayersBackend aLayersBackend, TextureFlags aFlags,
+ const dom::ContentParentId& aContentId, uint64_t aSerial,
+ wr::MaybeExternalImageId& aExternalImageId) = 0;
+
+ /**
+ * Returns the CanvasChild for this TextureForwarder.
+ */
+ virtual already_AddRefed<CanvasChild> GetCanvasChild() { return nullptr; };
+};
+
+} // namespace layers
+} // namespace mozilla
+
+#endif