src/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     const AllocationCallback& callback) {
  36   if (GpuMemoryBufferImplSharedMemory::IsConfigurationSupported(
  37           size, internalformat, usage)) {
  38     GpuMemoryBufferImplSharedMemory::AllocateSharedMemoryForChildProcess(
  39         size, internalformat, child_process, callback);
  40     return;
  41   }
  42
  43   callback.Run(gfx::GpuMemoryBufferHandle());
  44 }
  45
  46 // static
  47 void GpuMemoryBufferImpl::DeletedByChildProcess(
  48     gfx::GpuMemoryBufferType type,
  49     const gfx::GpuMemoryBufferId& id,
  50     base::ProcessHandle child_process) {
  51 }
  52
  53 // static
  54 scoped_ptr<GpuMemoryBufferImpl> GpuMemoryBufferImpl::CreateFromHandle(
  55     const gfx::GpuMemoryBufferHandle& handle,
  56     const gfx::Size& size,
  57     unsigned internalformat) {
  58   switch (handle.type) {
  59     case gfx::SHARED_MEMORY_BUFFER: {
  60       scoped_ptr<GpuMemoryBufferImplSharedMemory> buffer(
  61           new GpuMemoryBufferImplSharedMemory(size, internalformat));
  62       if (!buffer->InitializeFromHandle(handle))
  63         return scoped_ptr<GpuMemoryBufferImpl>();
  64
  65       return buffer.PassAs<GpuMemoryBufferImpl>();
  66     }
  67     default:
  68       return scoped_ptr<GpuMemoryBufferImpl>();
  69   }
  70 }
  71
  72 }  // namespace content