src/gpu/command_buffer/service/image_manager.cc

   1 // Copyright (c) 2012 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 "gpu/command_buffer/service/image_manager.h"
   6
   7 #include "ui/gl/gl_image.h"
   8
   9 namespace gpu {
  10 namespace gles2 {
  11
  12 ImageManager::ImageManager() {
  13 }
  14
  15 ImageManager::~ImageManager() {
  16 }
  17
  18 bool ImageManager::RegisterGpuMemoryBuffer(int32 id,
  19                                            gfx::GpuMemoryBufferHandle buffer,
  20                                            size_t width,
  21                                            size_t height,
  22                                            unsigned internalformat) {
  23   if (id <= 0) {
  24     DVLOG(0) << "Cannot register GPU memory buffer with non-positive ID.";
  25     return false;
  26   }
  27
  28   if (LookupImage(id)) {
  29     DVLOG(0) << "GPU memory buffer ID already in use.";
  30     return false;
  31   }
  32
  33   scoped_refptr<gfx::GLImage> gl_image =
  34       gfx::GLImage::CreateGLImageForGpuMemoryBuffer(buffer,
  35                                                     gfx::Size(width, height),
  36                                                     internalformat);
  37   if (!gl_image)
  38     return false;
  39
  40   AddImage(gl_image.get(), id);
  41   return true;
  42 }
  43
  44 void ImageManager::DestroyGpuMemoryBuffer(int32 id) {
  45   RemoveImage(id);
  46 }
  47
  48 void ImageManager::AddImage(gfx::GLImage* image, int32 service_id) {
  49   gl_images_[service_id] = image;
  50 }
  51
  52 void ImageManager::RemoveImage(int32 service_id) {
  53   gl_images_.erase(service_id);
  54 }
  55
  56 gfx::GLImage* ImageManager::LookupImage(int32 service_id) {
  57   GLImageMap::const_iterator iter = gl_images_.find(service_id);
  58   if (iter != gl_images_.end())
  59     return iter->second.get();
  60
  61   return NULL;
  62 }
  63
  64 }  // namespace gles2
  65 }  // namespace gpu