gecko-dev/gfx/gl/SharedSurfaceEGL.h

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/* -*- Mode: c++; c-basic-offset: 4; indent-tabs-mode: nil; tab-width: 40; -*- */
/* 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 SHARED_SURFACE_EGL_H_
#define SHARED_SURFACE_EGL_H_
#include "SharedSurfaceGL.h"
#include "SurfaceFactory.h"
#include "GLLibraryEGL.h"
#include "SurfaceTypes.h"
#include "mozilla/Attributes.h"
#include "mozilla/Mutex.h"
namespace mozilla {
namespace gl {
class GLContext;
class SharedSurface_EGLImage
: public SharedSurface_GL
{
public:
static SharedSurface_EGLImage* Create(GLContext* prodGL,
const GLFormats& formats,
const gfxIntSize& size,
bool hasAlpha,
EGLContext context);
static SharedSurface_EGLImage* Cast(SharedSurface* surf) {
MOZ_ASSERT(surf->Type() == SharedSurfaceType::EGLImageShare);
return (SharedSurface_EGLImage*)surf;
}
protected:
mutable Mutex mMutex;
GLLibraryEGL* const mEGL;
const GLFormats mFormats;
GLuint mProdTex;
nsRefPtr<gfxImageSurface> mPixels;
GLuint mProdTexForPipe; // Moves to mProdTex when mPipeActive becomes true.
EGLImage mImage;
GLContext* mCurConsGL;
GLuint mConsTex;
nsRefPtr<TextureGarbageBin> mGarbageBin;
EGLSync mSync;
bool mPipeFailed; // Pipe creation failed, and has been abandoned.
bool mPipeComplete; // Pipe connects (mPipeActive ? mProdTex : mProdTexForPipe) to mConsTex.
bool mPipeActive; // Pipe is complete and in use for production.
SharedSurface_EGLImage(GLContext* gl,
GLLibraryEGL* egl,
const gfxIntSize& size,
bool hasAlpha,
const GLFormats& formats,
GLuint prodTex)
: SharedSurface_GL(SharedSurfaceType::EGLImageShare,
AttachmentType::GLTexture,
gl,
size,
hasAlpha)
, mMutex("SharedSurface_EGLImage mutex")
, mEGL(egl)
, mFormats(formats)
, mProdTex(prodTex)
, mProdTexForPipe(0)
, mImage(0)
, mCurConsGL(nullptr)
, mConsTex(0)
, mSync(0)
, mPipeFailed(false)
, mPipeComplete(false)
, mPipeActive(false)
{}
EGLDisplay Display() const;
static bool HasExtensions(GLLibraryEGL* egl, GLContext* gl);
public:
virtual ~SharedSurface_EGLImage();
virtual void LockProdImpl();
virtual void UnlockProdImpl() {}
virtual void Fence();
virtual bool WaitSync();
virtual GLuint Texture() const {
return mProdTex;
}
// Implementation-specific functions below:
// Returns 0 if the pipe isn't ready. If 0, use GetPixels below.
GLuint AcquireConsumerTexture(GLContext* consGL);
// Will be void if AcquireConsumerTexture returns non-zero.
gfxImageSurface* GetPixels() const;
};
class SurfaceFactory_EGLImage
: public SurfaceFactory_GL
{
public:
// Infallible:
static SurfaceFactory_EGLImage* Create(GLContext* prodGL,
const SurfaceCaps& caps);
protected:
const EGLContext mContext;
SurfaceFactory_EGLImage(GLContext* prodGL,
EGLContext context,
const SurfaceCaps& caps)
: SurfaceFactory_GL(prodGL, SharedSurfaceType::EGLImageShare, caps)
, mContext(context)
{}
public:
virtual SharedSurface* CreateShared(const gfxIntSize& size) {
bool hasAlpha = mReadCaps.alpha;
return SharedSurface_EGLImage::Create(mGL, mFormats, size, hasAlpha, mContext);
}
};
} /* namespace gfx */
} /* namespace mozilla */
#endif /* SHARED_SURFACE_EGL_H_ */