gpu_memory_buffer_impl_win.cc revision 03b57e008b61dfcb1fbad3aea950ae0e001748b0 
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#include "content/common/gpu/client/gpu_memory_buffer_impl.h"
6
7#include "content/common/gpu/client/gpu_memory_buffer_impl_shared_memory.h"
8
9namespace content {
10
11// static
12scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::Create(
13    const gfx::Size& size,
14    unsigned internalformat,
15    unsigned usage) {
16  if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
17          size, internalformat, usage)) {
18    scoped_ptr<GpuMemoryBufferImplSharedMemory> buffer(
19        new GpuMemoryBufferImplSharedMemory(size, internalformat));
20    if (!buffer->Initialize())
21      return scoped_ptr<GpuMemoryBufferImpl>();
22
23    return buffer.PassAs<GpuMemoryBufferImpl>();
24  }
25
26  return scoped_ptr<GpuMemoryBufferImpl>();
27}
28
29// static
30void GpuMemoryBufferImpl::AllocateForChildProcess(
31    const gfx::Size& size,
32    unsigned internalformat,
33    unsigned usage,
34    base::ProcessHandle child_process,
35    int child_id,
36    const AllocationCallback& callback) {
37  if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
38          size, internalformat, usage)) {
39    GpuMemoryBufferImplSharedMemory::AllocateSharedMemoryForChildProcess(
40        size, internalformat, child_process, callback);
41    return;
42  }
43
44  callback.Run(gfx::GpuMemoryBufferHandle());
45}
46
47// static
48void GpuMemoryBufferImpl::DeletedByChildProcess(
49    gfx::GpuMemoryBufferType type,
50    const gfx::GpuMemoryBufferId& id,
51    base::ProcessHandle child_process) {
52}
53
54// static
55scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::CreateFromHandle(
56    const gfx::GpuMemoryBufferHandle& handle,
57    const gfx::Size& size,
58    unsigned internalformat) {
59  switch (handle.type) {
60    case gfx::SHARED_MEMORY_BUFFER: {
61      scoped_ptr<GpuMemoryBufferImplSharedMemory> buffer(
62          new GpuMemoryBufferImplSharedMemory(size, internalformat));
63      if (!buffer->InitializeFromHandle(handle))
64        return scoped_ptr<GpuMemoryBufferImpl>();
65
66      return buffer.PassAs<GpuMemoryBufferImpl>();
67    }
68    default:
69      return scoped_ptr<GpuMemoryBufferImpl>();
70  }
71}
72
73}  // namespace content
74