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69 lines
2.1 KiB
C++
69 lines
2.1 KiB
C++
// Copyright (c) 2013 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef UI_GL_ANDROID_SCOPED_JAVA_SURFACE_H_
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#define UI_GL_ANDROID_SCOPED_JAVA_SURFACE_H_
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#include <jni.h>
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#include "base/android/scoped_java_ref.h"
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#include "base/move.h"
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#include "ui/gl/gl_export.h"
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namespace gfx {
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class SurfaceTexture;
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// A helper class for holding a scoped reference to a Java Surface instance.
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// When going out of scope, Surface.release() is called on the Java object to
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// make sure server-side references (esp. wrt graphics memory) are released.
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class GL_EXPORT ScopedJavaSurface {
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MOVE_ONLY_TYPE_FOR_CPP_03(ScopedJavaSurface, RValue);
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public:
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ScopedJavaSurface();
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// Wraps an existing Java Surface object in a ScopedJavaSurface.
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explicit ScopedJavaSurface(const base::android::JavaRef<jobject>& surface);
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// Creates a Java Surface from a SurfaceTexture and wraps it in a
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// ScopedJavaSurface.
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explicit ScopedJavaSurface(const SurfaceTexture* surface_texture);
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// Move constructor. Take the surface from another ScopedJavaSurface object,
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// the latter no longer owns the surface afterwards.
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ScopedJavaSurface(RValue rvalue);
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ScopedJavaSurface& operator=(RValue rhs);
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// Creates a ScopedJavaSurface that is owned externally, i.e.,
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// someone else is responsible to call Surface.release().
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static ScopedJavaSurface AcquireExternalSurface(jobject surface);
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~ScopedJavaSurface();
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// Check whether the surface is an empty one.
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bool IsEmpty() const;
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// Check whether the surface is hardware protected so that no readback is
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// possible.
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bool is_protected() const { return is_protected_; }
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const base::android::JavaRef<jobject>& j_surface() const {
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return j_surface_;
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}
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private:
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// Performs destructive move from |other| to this.
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void MoveFrom(ScopedJavaSurface& other);
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bool auto_release_;
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bool is_protected_;
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base::android::ScopedJavaGlobalRef<jobject> j_surface_;
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};
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} // namespace gfx
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#endif // UI_GL_ANDROID_SCOPED_JAVA_SURFACE_H_
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