mojo/services/gles2/mojo_buffer_backing.cc

   1 // Copyright 2014 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 "mojo/services/gles2/mojo_buffer_backing.h"
   6
   7 #include "base/logging.h"
   8
   9 namespace mojo {
  10 namespace gles2 {
  11
  12 MojoBufferBacking::MojoBufferBacking(mojo::ScopedSharedBufferHandle handle,
  13                                      void* memory,
  14                                      size_t size)
  15     : handle_(handle.Pass()), memory_(memory), size_(size) {}
  16
  17 MojoBufferBacking::~MojoBufferBacking() { mojo::UnmapBuffer(memory_); }
  18
  19 // static
  20 scoped_ptr<gpu::BufferBacking> MojoBufferBacking::Create(
  21     mojo::ScopedSharedBufferHandle handle,
  22     size_t size) {
  23   void* memory = NULL;
  24   MojoResult result = mojo::MapBuffer(
  25       handle.get(), 0, size, &memory, MOJO_MAP_BUFFER_FLAG_NONE);
  26   if (result != MOJO_RESULT_OK)
  27     return scoped_ptr<BufferBacking>();
  28   DCHECK(memory);
  29   return scoped_ptr<BufferBacking>(
  30       new MojoBufferBacking(handle.Pass(), memory, size));
  31 }
  32 void* MojoBufferBacking::GetMemory() const { return memory_; }
  33 size_t MojoBufferBacking::GetSize() const { return size_; }
  34
  35 }  // namespace gles2
  36 }  // namespace mojo