content: Move IOSurface backed GpuMemoryBuffer allocation to GPU process.

content/common/gpu/client/gpu_memory_buffer_impl_io_surface.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h"
 
+#include "base/atomic_sequence_num.h"
+#include "base/bind.h"
+#include "base/logging.h"
+#include "content/common/gpu/client/gpu_memory_buffer_factory_host.h"
 #include "ui/gl/gl_bindings.h"
 
 namespace content {
+namespace {
+
+base::StaticAtomicSequenceNumber g_next_buffer_id;
+
+void Noop() {
+}
+
+void GpuMemoryBufferCreated(
+    const gfx::Size& size,
+    unsigned internalformat,
+    const GpuMemoryBufferImpl::CreationCallback& callback,
+    const gfx::GpuMemoryBufferHandle& handle) {
+  DCHECK_EQ(gfx::IO_SURFACE_BUFFER, handle.type);
+
+  callback.Run(GpuMemoryBufferImplIOSurface::CreateFromHandle(
+      handle, size, internalformat, base::Bind(&Noop)));
+}
+
+void GpuMemoryBufferCreatedForChildProcess(
+    const GpuMemoryBufferImpl::AllocationCallback& callback,
+    const gfx::GpuMemoryBufferHandle& handle) {
+  DCHECK_EQ(gfx::IO_SURFACE_BUFFER, handle.type);
+
+  callback.Run(handle);
+}
+
+}  // namespace
 
 GpuMemoryBufferImplIOSurface::GpuMemoryBufferImplIOSurface(
     const gfx::Size& size,
     unsigned internalformat,
     const DestructionCallback& callback,
     IOSurfaceRef io_surface)
     : GpuMemoryBufferImpl(size, internalformat, callback),
       io_surface_(io_surface) {
 }
 
 GpuMemoryBufferImplIOSurface::~GpuMemoryBufferImplIOSurface() {
 }
 
 // static
+void GpuMemoryBufferImplIOSurface::Create(const gfx::Size& size,
+                                          unsigned internalformat,
+                                          unsigned usage,
+                                          int client_id,
+                                          const CreationCallback& callback) {
+  gfx::GpuMemoryBufferHandle handle;
+  handle.type = gfx::IO_SURFACE_BUFFER;
+  handle.global_id.primary_id = g_next_buffer_id.GetNext();
+  handle.global_id.secondary_id = client_id;
+  GpuMemoryBufferFactoryHost::GetInstance()->CreateGpuMemoryBuffer(
+      handle,
+      size,
+      internalformat,
+      usage,
+      base::Bind(&GpuMemoryBufferCreated, size, internalformat, callback));
+}
+
+// static
+void GpuMemoryBufferImplIOSurface::AllocateForChildProcess(
+    const gfx::Size& size,
+    unsigned internalformat,
+    unsigned usage,
+    int child_client_id,
+    const AllocationCallback& callback) {
+  gfx::GpuMemoryBufferHandle handle;
+  handle.type = gfx::IO_SURFACE_BUFFER;
+  handle.global_id.primary_id = g_next_buffer_id.GetNext();
+  handle.global_id.secondary_id = child_client_id;
+  GpuMemoryBufferFactoryHost::GetInstance()->CreateGpuMemoryBuffer(
+      handle,
+      size,
+      internalformat,
+      usage,
+      base::Bind(&GpuMemoryBufferCreatedForChildProcess, callback));
+}
+
+// static
 scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImplIOSurface::CreateFromHandle(
     const gfx::GpuMemoryBufferHandle& handle,
     const gfx::Size& size,
     unsigned internalformat,
     const DestructionCallback& callback) {
   DCHECK(IsFormatSupported(internalformat));
 
   base::ScopedCFTypeRef<IOSurfaceRef> io_surface(
       IOSurfaceLookup(handle.io_surface_id));
   if (!io_surface)
@@ skipping 59 matching lines @@
 }
 
 gfx::GpuMemoryBufferHandle GpuMemoryBufferImplIOSurface::GetHandle() const {
   gfx::GpuMemoryBufferHandle handle;
   handle.type = gfx::IO_SURFACE_BUFFER;
   handle.io_surface_id = IOSurfaceGetID(io_surface_);
   return handle;
 }
 
 }  // namespace content