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