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Side by Side Diff: content/common/gpu/client/gpu_memory_buffer_impl_shm.h

Issue 331723003: gpu: Remove Create/DeleteImage IPC by adding an X11_PIXMAP_BUFFER GpuMemoryBuffer type. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: rebase Created 6 years, 5 months ago
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1 // Copyright 2013 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 CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SHM_H_
6 #define CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SHM_H_
7
8 #include "content/common/gpu/client/gpu_memory_buffer_impl.h"
9
10 namespace content {
11
12 // Implementation of GPU memory buffer based on shared memory.
13 class GpuMemoryBufferImplShm : public GpuMemoryBufferImpl {
14 public:
15 GpuMemoryBufferImplShm(const gfx::Size& size, unsigned internalformat);
16 virtual ~GpuMemoryBufferImplShm();
17
18 // Allocates a shared memory backed GPU memory buffer with |size| and
19 // |internalformat| for use by |child_process|.
20 static void AllocateSharedMemoryForChildProcess(
21 const gfx::Size& size,
22 unsigned internalformat,
23 base::ProcessHandle child_process,
24 const AllocationCallback& callback);
25
26 static bool IsLayoutSupported(const gfx::Size& size, unsigned internalformat);
27 static bool IsUsageSupported(unsigned usage);
28 static bool IsConfigurationSupported(const gfx::Size& size,
29 unsigned internalformat,
30 unsigned usage);
31
32 bool Initialize();
33 bool InitializeFromHandle(gfx::GpuMemoryBufferHandle handle);
34
35 // Overridden from gfx::GpuMemoryBuffer:
36 virtual void* Map() OVERRIDE;
37 virtual void Unmap() OVERRIDE;
38 virtual uint32 GetStride() const OVERRIDE;
39 virtual gfx::GpuMemoryBufferHandle GetHandle() const OVERRIDE;
40
41 private:
42 scoped_ptr<base::SharedMemory> shared_memory_;
43
44 DISALLOW_COPY_AND_ASSIGN(GpuMemoryBufferImplShm);
45 };
46
47 } // namespace content
48
49 #endif // CONTENT_COMMON_GPU_CLIENT_GPU_MEMORY_BUFFER_IMPL_SHM_H_
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