gpu_memory_buffer_impl_win.cc revision cedac228d2dd51db4b79ea1e72c7f249408ee061 
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_shm.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 (GpuMemoryBufferImplShm::IsConfigurationSupported(
17          size, internalformat, usage)) {
18    scoped_ptr<GpuMemoryBufferImplShm> buffer(
19        new GpuMemoryBufferImplShm(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    const AllocationCallback& callback) {
36  if (GpuMemoryBufferImplShm::IsConfigurationSupported(
37          size, internalformat, usage)) {
38    GpuMemoryBufferImplShm::AllocateSharedMemoryForChildProcess(
39        size, internalformat, child_process, callback);
40    return;
41  }
42
43  callback.Run(gfx::GpuMemoryBufferHandle());
44}
45
46// static
47scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::CreateFromHandle(
48    gfx::GpuMemoryBufferHandle handle,
49    const gfx::Size& size,
50    unsigned internalformat) {
51  switch (handle.type) {
52    case gfx::SHARED_MEMORY_BUFFER: {
53      scoped_ptr<GpuMemoryBufferImplShm> buffer(
54          new GpuMemoryBufferImplShm(size, internalformat));
55      if (!buffer->InitializeFromHandle(handle))
56        return scoped_ptr<GpuMemoryBufferImpl>();
57
58      return buffer.PassAs<GpuMemoryBufferImpl>();
59    }
60    default:
61      return scoped_ptr<GpuMemoryBufferImpl>();
62  }
63}
64
65}  // namespace content
66