1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef GPU_IPC_COMMON_GPU_MEMORY_BUFFER_SUPPORT_H_
6 #define GPU_IPC_COMMON_GPU_MEMORY_BUFFER_SUPPORT_H_
7 
8 #include <memory>
9 
10 #include "base/callback.h"
11 #include "base/macros.h"
12 #include "build/build_config.h"
13 #include "gpu/gpu_export.h"
14 #include "gpu/ipc/common/gpu_memory_buffer_impl.h"
15 #include "ui/gfx/buffer_types.h"
16 #include "ui/gfx/geometry/size.h"
17 #include "ui/gfx/gpu_memory_buffer.h"
18 
19 #if defined(OS_LINUX) || defined(OS_BSD) || defined(USE_OZONE)
20 namespace gfx {
21 class ClientNativePixmapFactory;
22 }
23 #endif
24 
25 namespace gpu {
26 
27 // Provides a common factory for GPU memory buffer implementations.
28 class GPU_EXPORT GpuMemoryBufferSupport {
29  public:
30   GpuMemoryBufferSupport();
31   virtual ~GpuMemoryBufferSupport();
32 
33   // Returns the native GPU memory buffer factory type. Returns EMPTY_BUFFER
34   // type if native buffers are not supported.
35   gfx::GpuMemoryBufferType GetNativeGpuMemoryBufferType();
36 
37   // Returns whether the provided buffer format is supported.
38   bool IsNativeGpuMemoryBufferConfigurationSupported(gfx::BufferFormat format,
39                                                      gfx::BufferUsage usage);
40 
41 #if defined(OS_LINUX) || defined(OS_BSD) || defined(USE_OZONE)
client_native_pixmap_factory()42   gfx::ClientNativePixmapFactory* client_native_pixmap_factory() {
43     return client_native_pixmap_factory_.get();
44   }
45 #endif
46 
47   // Returns whether the provided buffer format is supported.
48   bool IsConfigurationSupportedForTest(gfx::GpuMemoryBufferType type,
49                                        gfx::BufferFormat format,
50                                        gfx::BufferUsage usage);
51 
52   // Creates a GpuMemoryBufferImpl from the given |handle|. |size| and |format|
53   // should match what was used to allocate the |handle|. |callback|, if
54   // non-null, is called when instance is deleted, which is not necessarily on
55   // the same thread as this function was called on and instance was created on.
56   virtual std::unique_ptr<GpuMemoryBufferImpl>
57   CreateGpuMemoryBufferImplFromHandle(
58       gfx::GpuMemoryBufferHandle handle,
59       const gfx::Size& size,
60       gfx::BufferFormat format,
61       gfx::BufferUsage usage,
62       GpuMemoryBufferImpl::DestructionCallback callback);
63 
64  private:
65 #if defined(OS_LINUX) || defined(OS_BSD) || defined(USE_OZONE)
66   std::unique_ptr<gfx::ClientNativePixmapFactory> client_native_pixmap_factory_;
67 #endif
68 
69   DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferSupport);
70 };
71 
72 }  // namespace gpu
73 
74 #endif  // GPU_IPC_COMMON_GPU_MEMORY_BUFFER_SUPPORT_H_
75