content/common/gpu/gpu_memory_buffer_factory_io_surface.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_io_surface.h"
   6
   7 #include <CoreFoundation/CoreFoundation.h>
   8
   9 #include "content/common/gpu/client/gpu_memory_buffer_impl_io_surface.h"
  10 #include "ui/gl/gl_image_io_surface.h"
  11
  12 namespace content {
  13 namespace {
  14
  15 void AddBooleanValue(CFMutableDictionaryRef dictionary,
  16                      const CFStringRef key,
  17                      bool value) {
  18   CFDictionaryAddValue(
  19       dictionary, key, value ? kCFBooleanTrue : kCFBooleanFalse);
  20 }
  21
  22 void AddIntegerValue(CFMutableDictionaryRef dictionary,
  23                      const CFStringRef key,
  24                      int32 value) {
  25   base::ScopedCFTypeRef<CFNumberRef> number(
  26       CFNumberCreate(NULL, kCFNumberSInt32Type, &value));
  27   CFDictionaryAddValue(dictionary, key, number.get());
  28 }
  29
  30 }  // namespace
  31
  32 GpuMemoryBufferFactoryIOSurface::GpuMemoryBufferFactoryIOSurface() {
  33 }
  34
  35 GpuMemoryBufferFactoryIOSurface::~GpuMemoryBufferFactoryIOSurface() {
  36 }
  37
  38 gfx::GpuMemoryBufferHandle
  39 GpuMemoryBufferFactoryIOSurface::CreateGpuMemoryBuffer(
  40     gfx::GpuMemoryBufferId id,
  41     const gfx::Size& size,
  42     gfx::GpuMemoryBuffer::Format format,
  43     int client_id) {
  44   base::ScopedCFTypeRef<CFMutableDictionaryRef> properties;
  45   properties.reset(CFDictionaryCreateMutable(kCFAllocatorDefault,
  46                                              0,
  47                                              &kCFTypeDictionaryKeyCallBacks,
  48                                              &kCFTypeDictionaryValueCallBacks));
  49   AddIntegerValue(properties, kIOSurfaceWidth, size.width());
  50   AddIntegerValue(properties, kIOSurfaceHeight, size.height());
  51   AddIntegerValue(properties,
  52                   kIOSurfaceBytesPerElement,
  53                   GpuMemoryBufferImpl::BytesPerPixel(format));
  54   AddIntegerValue(properties,
  55                   kIOSurfacePixelFormat,
  56                   GpuMemoryBufferImplIOSurface::PixelFormat(format));
  57   // TODO(reveman): Remove this when using a mach_port_t to transfer
  58   // IOSurface to browser and renderer process. crbug.com/323304
  59   AddBooleanValue(properties, kIOSurfaceIsGlobal, true);
  60
  61   base::ScopedCFTypeRef<IOSurfaceRef> io_surface(IOSurfaceCreate(properties));
  62   if (!io_surface)
  63     return gfx::GpuMemoryBufferHandle();
  64
  65   IOSurfaceMapKey key(id, client_id);
  66   DCHECK(io_surfaces_.find(key) == io_surfaces_.end());
  67   io_surfaces_[key] = io_surface;
  68
  69   gfx::GpuMemoryBufferHandle handle;
  70   handle.type = gfx::IO_SURFACE_BUFFER;
  71   handle.id = id;
  72   handle.io_surface_id = IOSurfaceGetID(io_surface);
  73   return handle;
  74 }
  75
  76 void GpuMemoryBufferFactoryIOSurface::DestroyGpuMemoryBuffer(
  77     gfx::GpuMemoryBufferId id,
  78     int client_id) {
  79   IOSurfaceMapKey key(id, client_id);
  80   IOSurfaceMap::iterator it = io_surfaces_.find(key);
  81   if (it != io_surfaces_.end())
  82     io_surfaces_.erase(it);
  83 }
  84
  85 scoped_refptr<gfx::GLImage>
  86 GpuMemoryBufferFactoryIOSurface::CreateImageForGpuMemoryBuffer(
  87     gfx::GpuMemoryBufferId id,
  88     const gfx::Size& size,
  89     gfx::GpuMemoryBuffer::Format format,
  90     int client_id) {
  91   IOSurfaceMapKey key(id, client_id);
  92   IOSurfaceMap::iterator it = io_surfaces_.find(key);
  93   if (it == io_surfaces_.end())
  94     return scoped_refptr<gfx::GLImage>();
  95
  96   scoped_refptr<gfx::GLImageIOSurface> image(new gfx::GLImageIOSurface(size));
  97   if (!image->Initialize(it->second.get()))
  98     return scoped_refptr<gfx::GLImage>();
  99
 100   return image;
 101 }
 102
 103 }  // namespace content