content/common/gpu/client/gpu_memory_buffer_impl_win.cc

   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
   9 namespace content {
  10
  11 // static
  12 scoped_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
  30 void 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
  48 void GpuMemoryBufferImpl::DeletedByChildProcess(
  49     gfx::GpuMemoryBufferType type,
  50     const gfx::GpuMemoryBufferId& id,
  51     base::ProcessHandle child_process) {
  52 }
  53
  54 // static
  55 scoped_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