michael@0: /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "GLContext.h"                  // for GLContext, etc
michael@0: #include "SurfaceStream.h"
michael@0: #include "mozilla/Assertions.h"         // for MOZ_ASSERT, etc
michael@0: #include "mozilla/layers/ISurfaceAllocator.h"
michael@0: #include "mozilla/layers/TextureClientOGL.h"
michael@0: #include "nsSize.h"                     // for nsIntSize
michael@0: 
michael@0: using namespace mozilla::gl;
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace layers {
michael@0: 
michael@0: class CompositableForwarder;
michael@0: 
michael@0: SharedTextureClientOGL::SharedTextureClientOGL(TextureFlags aFlags)
michael@0:   : TextureClient(aFlags)
michael@0:   , mHandle(0)
michael@0:   , mInverted(false)
michael@0: {
michael@0:   // SharedTextureClient is always owned externally.
michael@0:   mFlags |= TEXTURE_DEALLOCATE_CLIENT;
michael@0: }
michael@0: 
michael@0: SharedTextureClientOGL::~SharedTextureClientOGL()
michael@0: {
michael@0:   // the shared data is owned externally.
michael@0: }
michael@0: 
michael@0: 
michael@0: bool
michael@0: SharedTextureClientOGL::ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor)
michael@0: {
michael@0:   MOZ_ASSERT(IsValid());
michael@0:   if (!IsAllocated()) {
michael@0:     return false;
michael@0:   }
michael@0:   aOutDescriptor = SharedTextureDescriptor(mShareType, mHandle, mSize, mInverted);
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: SharedTextureClientOGL::InitWith(gl::SharedTextureHandle aHandle,
michael@0:                                  gfx::IntSize aSize,
michael@0:                                  gl::SharedTextureShareType aShareType,
michael@0:                                  bool aInverted)
michael@0: {
michael@0:   MOZ_ASSERT(IsValid());
michael@0:   MOZ_ASSERT(!IsAllocated());
michael@0:   mHandle = aHandle;
michael@0:   mSize = aSize;
michael@0:   mShareType = aShareType;
michael@0:   mInverted = aInverted;
michael@0:   if (mInverted) {
michael@0:     AddFlags(TEXTURE_NEEDS_Y_FLIP);
michael@0:   }
michael@0: }
michael@0: 
michael@0: bool
michael@0: SharedTextureClientOGL::Lock(OpenMode mode)
michael@0: {
michael@0:   MOZ_ASSERT(!mIsLocked);
michael@0:   if (!IsValid() || !IsAllocated()) {
michael@0:     return false;
michael@0:   }
michael@0:   mIsLocked = true;
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: SharedTextureClientOGL::Unlock()
michael@0: {
michael@0:   MOZ_ASSERT(mIsLocked);
michael@0:   mIsLocked = false;
michael@0: }
michael@0: 
michael@0: bool
michael@0: SharedTextureClientOGL::IsAllocated() const
michael@0: {
michael@0:   return mHandle != 0;
michael@0: }
michael@0: 
michael@0: StreamTextureClientOGL::StreamTextureClientOGL(TextureFlags aFlags)
michael@0:   : TextureClient(aFlags)
michael@0:   , mIsLocked(false)
michael@0: {
michael@0: }
michael@0: 
michael@0: StreamTextureClientOGL::~StreamTextureClientOGL()
michael@0: {
michael@0:   // the data is owned externally.
michael@0: }
michael@0: 
michael@0: bool
michael@0: StreamTextureClientOGL::Lock(OpenMode mode)
michael@0: {
michael@0:   MOZ_ASSERT(!mIsLocked);
michael@0:   if (!IsValid() || !IsAllocated()) {
michael@0:     return false;
michael@0:   }
michael@0:   mIsLocked = true;
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: StreamTextureClientOGL::Unlock()
michael@0: {
michael@0:   MOZ_ASSERT(mIsLocked);
michael@0:   mIsLocked = false;
michael@0: }
michael@0: 
michael@0: bool
michael@0: StreamTextureClientOGL::ToSurfaceDescriptor(SurfaceDescriptor& aOutDescriptor)
michael@0: {
michael@0:   if (!IsAllocated()) {
michael@0:     return false;
michael@0:   }
michael@0: 
michael@0:   gfx::SurfaceStreamHandle handle = mStream->GetShareHandle();
michael@0:   aOutDescriptor = SurfaceStreamDescriptor(handle, false);
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: StreamTextureClientOGL::InitWith(gfx::SurfaceStream* aStream)
michael@0: {
michael@0:   MOZ_ASSERT(!IsAllocated());
michael@0:   mStream = aStream;
michael@0:   mGL = mStream->GLContext();
michael@0: }
michael@0: 
michael@0: bool
michael@0: StreamTextureClientOGL::IsAllocated() const
michael@0: {
michael@0:   return mStream != 0;
michael@0: }
michael@0: 
michael@0: 
michael@0: } // namespace
michael@0: } // namespace