forked from mirrors/gecko-dev
c7ed87060f
Rebased from https://hg.mozilla.org/mozilla-central/rev/b34601c7751d Differential Revision: https://phabricator.services.mozilla.com/D241144
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_MEDIA_PLATFORMS_FFMPEG_VALIBWRAPPER_H_
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#define DOM_MEDIA_PLATFORMS_FFMPEG_VALIBWRAPPER_H_
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#include "mozilla/Attributes.h"
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#include "mozilla/Types.h"
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struct PRLibrary;
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#ifdef MOZ_WIDGET_GTK
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namespace mozilla {
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class MOZ_ONLY_USED_TO_AVOID_STATIC_CONSTRUCTORS VALibWrapper {
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public:
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// The class is used only in static storage and so is zero initialized.
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VALibWrapper() = default;
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// The libraries are not unloaded in the destructor, because doing so would
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// require a static constructor to register the static destructor. As the
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// class is in static storage, the destructor would only run on shutdown
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// anyway.
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~VALibWrapper() = default;
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// Check if sVALib and sVALibDrm are available with necessary symbols and
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// initialize sFuncs;
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static bool IsVAAPIAvailable();
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static VALibWrapper sFuncs;
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private:
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void Link();
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bool AreVAAPIFuncsAvailable();
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// Attempt to load libva-drm and libva and resolve necessary symbols.
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// Upon failure, the entire object will be reset and any attached libraries
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// will be unlinked. Do not invoke more than once.
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bool LinkVAAPILibs();
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public:
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int (*vaExportSurfaceHandle)(void*, unsigned int, uint32_t, uint32_t, void*);
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int (*vaSyncSurface)(void*, unsigned int);
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int (*vaInitialize)(void* dpy, int* major_version, int* minor_version);
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int (*vaTerminate)(void* dpy);
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void* (*vaGetDisplayDRM)(int fd);
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private:
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PRLibrary* mVALib;
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PRLibrary* mVALibDrm;
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};
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} // namespace mozilla
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#endif // MOZ_WIDGET_GTK
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#endif // DOM_MEDIA_PLATFORMS_FFMPEG_VALIBWRAPPER_H_
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