Update To 11.40.268.0

[platform/framework/web/crosswalk.git] / src / content / common / gpu / client / gpu_memory_buffer_impl.h

diff --git a/src/content/common/gpu/client/gpu_memory_buffer_impl.h b/src/content/common/gpu/client/gpu_memory_buffer_impl.h
index ee85f0f..52d5aef 100644 (file)
--- a/src/content/common/gpu/client/gpu_memory_buffer_impl.h
+++ b/src/content/common/gpu/client/gpu_memory_buffer_impl.h
@@ -5,6 +5,7 @@
 #ifndef CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_H_
 #define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_H_
 
+#include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
 #include "ui/gfx/gpu_memory_buffer.h"
 #include "ui/gfx/size.h"
@@ -14,26 +15,79 @@ namespace content {
 // Provides common implementation of a GPU memory buffer.
 class GpuMemoryBufferImpl : public gfx::GpuMemoryBuffer {
  public:
-  static scoped_ptr<GpuMemoryBufferImpl> Create(
-      gfx::GpuMemoryBufferHandle handle,
-      gfx::Size size,
-      unsigned internalformat);
+  typedef base::Callback<void(scoped_ptr<GpuMemoryBufferImpl> buffer)>
+      CreationCallback;
+  typedef base::Callback<void(const gfx::GpuMemoryBufferHandle& handle)>
+      AllocationCallback;
+  typedef base::Callback<void(uint32 sync_point)> DestructionCallback;
 
-  virtual ~GpuMemoryBufferImpl();
+  ~GpuMemoryBufferImpl() override;
 
-  static bool IsFormatValid(unsigned internalformat);
-  static size_t BytesPerPixel(unsigned internalformat);
+  // Creates a GPU memory buffer instance with |size| and |format| for |usage|
+  // by the current process and |client_id|.
+  static void Create(gfx::GpuMemoryBufferId id,
+                     const gfx::Size& size,
+                     Format format,
+                     Usage usage,
+                     int client_id,
+                     const CreationCallback& callback);
+
+  // Allocates a GPU memory buffer with |size| and |internalformat| for |usage|
+  // by |child_process| and |child_client_id|. The |handle| returned can be
+  // used by the |child_process| to create an instance of this class.
+  static void AllocateForChildProcess(gfx::GpuMemoryBufferId id,
+                                      const gfx::Size& size,
+                                      Format format,
+                                      Usage usage,
+                                      base::ProcessHandle child_process,
+                                      int child_client_id,
+                                      const AllocationCallback& callback);
+
+  // Notify that GPU memory buffer has been deleted by |child_process|.
+  static void DeletedByChildProcess(gfx::GpuMemoryBufferType type,
+                                    gfx::GpuMemoryBufferId id,
+                                    base::ProcessHandle child_process,
+                                    int child_client_id,
+                                    uint32 sync_point);
+
+  // Creates an instance from the given |handle|. |size| and |internalformat|
+  // should match what was used to allocate the |handle|. |callback| is
+  // called when instance is deleted, which is not necessarily on the same
+  // thread as this function was called on and instance was created on.
+  static scoped_ptr<GpuMemoryBufferImpl> CreateFromHandle(
+      const gfx::GpuMemoryBufferHandle& handle,
+      const gfx::Size& size,
+      Format format,
+      const DestructionCallback& callback);
+
+  // Type-checking upcast routine. Returns an NULL on failure.
+  static GpuMemoryBufferImpl* FromClientBuffer(ClientBuffer buffer);
+
+  // Returns the number of bytes per pixel that must be used by an
+  // implementation when using |format|.
+  static size_t BytesPerPixel(Format format);
 
   // Overridden from gfx::GpuMemoryBuffer:
-  virtual bool IsMapped() const OVERRIDE;
-  virtual uint32 GetStride() const OVERRIDE;
+  bool IsMapped() const override;
+  Format GetFormat() const override;
+  ClientBuffer AsClientBuffer() override;
+
+  void set_destruction_sync_point(uint32 sync_point) {
+    destruction_sync_point_ = sync_point;
+  }
 
  protected:
-  GpuMemoryBufferImpl(gfx::Size size, unsigned internalformat);
+  GpuMemoryBufferImpl(gfx::GpuMemoryBufferId id,
+                      const gfx::Size& size,
+                      Format format,
+                      const DestructionCallback& callback);
 
+  const gfx::GpuMemoryBufferId id_;
   const gfx::Size size_;
-  unsigned internalformat_;
+  const Format format_;
+  const DestructionCallback callback_;
   bool mapped_;
+  uint32 destruction_sync_point_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImpl);
 };