content/common/gpu/gpu_memory_buffer_factory_surface_texture.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_surface_texture.h"
   6
   7 #include "content/common/android/surface_texture_manager.h"
   8 #include "ui/gl/android/surface_texture.h"
   9 #include "ui/gl/gl_image_surface_texture.h"
  10
  11 namespace content {
  12 namespace {
  13
  14 const GpuMemoryBufferFactory::Configuration kSupportedConfigurations[] = {
  15   { gfx::GpuMemoryBuffer::RGBA_8888, gfx::GpuMemoryBuffer::MAP }
  16 };
  17
  18 }  // namespace
  19
  20 GpuMemoryBufferFactorySurfaceTexture::GpuMemoryBufferFactorySurfaceTexture() {
  21 }
  22
  23 GpuMemoryBufferFactorySurfaceTexture::~GpuMemoryBufferFactorySurfaceTexture() {
  24 }
  25
  26 // static
  27 bool GpuMemoryBufferFactorySurfaceTexture::
  28     IsGpuMemoryBufferConfigurationSupported(gfx::GpuMemoryBuffer::Format format,
  29                                             gfx::GpuMemoryBuffer::Usage usage) {
  30   for (auto& configuration : kSupportedConfigurations) {
  31     if (configuration.format == format && configuration.usage == usage)
  32       return true;
  33   }
  34
  35   return false;
  36 }
  37
  38 void GpuMemoryBufferFactorySurfaceTexture::
  39     GetSupportedGpuMemoryBufferConfigurations(
  40         std::vector<Configuration>* configurations) {
  41   configurations->assign(
  42       kSupportedConfigurations,
  43       kSupportedConfigurations + arraysize(kSupportedConfigurations));
  44 }
  45
  46 gfx::GpuMemoryBufferHandle
  47 GpuMemoryBufferFactorySurfaceTexture::CreateGpuMemoryBuffer(
  48     gfx::GpuMemoryBufferId id,
  49     const gfx::Size& size,
  50     gfx::GpuMemoryBuffer::Format format,
  51     gfx::GpuMemoryBuffer::Usage usage,
  52     int client_id,
  53     gfx::PluginWindowHandle surface_handle) {
  54   // Note: this needs to be 0 as the surface texture implemenation will take
  55   // ownership of the texture and call glDeleteTextures when the GPU service
  56   // attaches the surface texture to a real texture id. glDeleteTextures
  57   // silently ignores 0.
  58   const int kDummyTextureId = 0;
  59   scoped_refptr<gfx::SurfaceTexture> surface_texture =
  60       gfx::SurfaceTexture::Create(kDummyTextureId);
  61   if (!surface_texture.get())
  62     return gfx::GpuMemoryBufferHandle();
  63
  64   SurfaceTextureManager::GetInstance()->RegisterSurfaceTexture(
  65       id, client_id, surface_texture.get());
  66
  67   {
  68     base::AutoLock lock(surface_textures_lock_);
  69
  70     SurfaceTextureMapKey key(id, client_id);
  71     DCHECK(surface_textures_.find(key) == surface_textures_.end());
  72     surface_textures_[key] = surface_texture;
  73   }
  74
  75   gfx::GpuMemoryBufferHandle handle;
  76   handle.type = gfx::SURFACE_TEXTURE_BUFFER;
  77   handle.id = id;
  78   return handle;
  79 }
  80
  81 void GpuMemoryBufferFactorySurfaceTexture::DestroyGpuMemoryBuffer(
  82     gfx::GpuMemoryBufferId id,
  83     int client_id) {
  84   {
  85     base::AutoLock lock(surface_textures_lock_);
  86
  87     SurfaceTextureMapKey key(id, client_id);
  88     SurfaceTextureMap::iterator it = surface_textures_.find(key);
  89     if (it != surface_textures_.end())
  90       surface_textures_.erase(it);
  91   }
  92
  93   SurfaceTextureManager::GetInstance()->UnregisterSurfaceTexture(id, client_id);
  94 }
  95
  96 gpu::ImageFactory* GpuMemoryBufferFactorySurfaceTexture::AsImageFactory() {
  97   return this;
  98 }
  99
 100 scoped_refptr<gfx::GLImage>
 101 GpuMemoryBufferFactorySurfaceTexture::CreateImageForGpuMemoryBuffer(
 102     const gfx::GpuMemoryBufferHandle& handle,
 103     const gfx::Size& size,
 104     gfx::GpuMemoryBuffer::Format format,
 105     unsigned internalformat,
 106     int client_id) {
 107   base::AutoLock lock(surface_textures_lock_);
 108
 109   DCHECK_EQ(handle.type, gfx::SURFACE_TEXTURE_BUFFER);
 110
 111   SurfaceTextureMapKey key(handle.id, client_id);
 112   SurfaceTextureMap::iterator it = surface_textures_.find(key);
 113   if (it == surface_textures_.end())
 114     return scoped_refptr<gfx::GLImage>();
 115
 116   scoped_refptr<gfx::GLImageSurfaceTexture> image(
 117       new gfx::GLImageSurfaceTexture(size));
 118   if (!image->Initialize(it->second.get()))
 119     return scoped_refptr<gfx::GLImage>();
 120
 121   return image;
 122 }
 123
 124 }  // namespace content