From 6bf0a5cb5034a7e684dcc3500e841785237ce2dd Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 19:32:43 +0200 Subject: Adding upstream version 1:115.7.0. Signed-off-by: Daniel Baumann --- widget/gtk/nsShmImage.h | 75 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 75 insertions(+) create mode 100644 widget/gtk/nsShmImage.h (limited to 'widget/gtk/nsShmImage.h') diff --git a/widget/gtk/nsShmImage.h b/widget/gtk/nsShmImage.h new file mode 100644 index 0000000000..2d92c39e0d --- /dev/null +++ b/widget/gtk/nsShmImage.h @@ -0,0 +1,75 @@ +/* -*- Mode: C++; tab-width: 8; 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 __mozilla_widget_nsShmImage_h__ +#define __mozilla_widget_nsShmImage_h__ + +#if defined(MOZ_X11) +# define MOZ_HAVE_SHMIMAGE +#endif + +#ifdef MOZ_HAVE_SHMIMAGE + +# include "mozilla/gfx/2D.h" +# include "nsIWidget.h" +# include "Units.h" + +# include +# include + +class nsShmImage { + // bug 1168843, compositor thread may create shared memory instances that are + // destroyed by main thread on shutdown, so this must use thread-safe RC to + // avoid hitting assertion + NS_INLINE_DECL_THREADSAFE_REFCOUNTING(nsShmImage) + + public: + static bool UseShm(); + + already_AddRefed CreateDrawTarget( + const mozilla::LayoutDeviceIntRegion& aRegion); + + void Put(const mozilla::LayoutDeviceIntRegion& aRegion); + + nsShmImage(Display* aDisplay, Drawable aWindow, Visual* aVisual, + unsigned int aDepth); + + private: + ~nsShmImage(); + + bool InitExtension(); + + bool CreateShmSegment(); + void DestroyShmSegment(); + + bool CreateImage(const mozilla::gfx::IntSize& aSize); + void DestroyImage(); + + void WaitIfPendingReply(); + + Display* mDisplay; + xcb_connection_t* mConnection; + Window mWindow; + Visual* mVisual; + unsigned int mDepth; + + mozilla::gfx::SurfaceFormat mFormat; + mozilla::gfx::IntSize mSize; + int mStride; + + xcb_pixmap_t mPixmap; + xcb_gcontext_t mGC; + xcb_get_input_focus_cookie_t mSyncRequest; + bool mRequestPending; + + xcb_shm_seg_t mShmSeg; + int mShmId; + uint8_t* mShmAddr; +}; + +#endif // MOZ_HAVE_SHMIMAGE + +#endif -- cgit v1.2.3