src/content/common/gpu/gpu_memory_buffer_factory_x11.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 "content/common/gpu/gpu_memory_buffer_factory.h"
   6
   7 #include "base/logging.h"
   8 #include "content/common/gpu/gpu_memory_buffer_factory_x11_pixmap.h"
   9 #include "ui/gl/gl_image.h"
  10 #include "ui/gl/gl_image_shared_memory.h"
  11
  12 namespace content {
  13 namespace {
  14
  15 class GpuMemoryBufferFactoryImpl : public GpuMemoryBufferFactory {
  16  public:
  17   // Overridden from GpuMemoryBufferFactory:
  18   virtual gfx::GpuMemoryBufferHandle CreateGpuMemoryBuffer(
  19       const gfx::GpuMemoryBufferHandle& handle,
  20       const gfx::Size& size,
  21       unsigned internalformat,
  22       unsigned usage) OVERRIDE {
  23     switch (handle.type) {
  24       case gfx::X11_PIXMAP_BUFFER:
  25         x11_pixmap_factory_.CreateGpuMemoryBuffer(handle.global_id,
  26                                                   handle.pixmap);
  27         return handle;
  28       default:
  29         NOTREACHED();
  30         return gfx::GpuMemoryBufferHandle();
  31     }
  32   }
  33   virtual void DestroyGpuMemoryBuffer(
  34       const gfx::GpuMemoryBufferHandle& handle) OVERRIDE {
  35     switch (handle.type) {
  36       case gfx::X11_PIXMAP_BUFFER:
  37         x11_pixmap_factory_.DestroyGpuMemoryBuffer(handle.global_id);
  38         break;
  39       default:
  40         NOTREACHED();
  41         break;
  42     }
  43   }
  44   virtual scoped_refptr<gfx::GLImage> CreateImageForGpuMemoryBuffer(
  45       const gfx::GpuMemoryBufferHandle& handle,
  46       const gfx::Size& size,
  47       unsigned internalformat,
  48       int client_id) OVERRIDE {
  49     switch (handle.type) {
  50       case gfx::SHARED_MEMORY_BUFFER: {
  51         scoped_refptr<gfx::GLImageSharedMemory> image(
  52             new gfx::GLImageSharedMemory(size, internalformat));
  53         if (!image->Initialize(handle))
  54           return NULL;
  55
  56         return image;
  57       }
  58       case gfx::X11_PIXMAP_BUFFER:
  59         // Verify that client is the owner of the buffer we're about to use.
  60         if (handle.global_id.secondary_id != client_id)
  61           return scoped_refptr<gfx::GLImage>();
  62
  63         return x11_pixmap_factory_.CreateImageForGpuMemoryBuffer(
  64             handle.global_id, size, internalformat);
  65       default:
  66         NOTREACHED();
  67         return scoped_refptr<gfx::GLImage>();
  68     }
  69   }
  70
  71  private:
  72   GpuMemoryBufferFactoryX11Pixmap x11_pixmap_factory_;
  73 };
  74
  75 }  // namespace
  76
  77 // static
  78 scoped_ptr<GpuMemoryBufferFactory> GpuMemoryBufferFactory::Create() {
  79   return make_scoped_ptr<GpuMemoryBufferFactory>(
  80       new GpuMemoryBufferFactoryImpl);
  81 }
  82
  83 }  // namespace content