src/gpu/command_buffer/service/stream_texture_manager_in_process_android.cc

   1 // Copyright 2013 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/stream_texture_manager_in_process_android.h"
   6
   7 #include "base/bind.h"
   8 #include "base/callback.h"
   9 #include "gpu/command_buffer/service/texture_manager.h"
  10 #include "ui/gfx/size.h"
  11 #include "ui/gl/android/surface_texture.h"
  12 #include "ui/gl/gl_bindings.h"
  13 #include "ui/gl/gl_image.h"
  14
  15 namespace gpu {
  16
  17 namespace {
  18
  19 // Simply wraps a SurfaceTexture reference as a GLImage.
  20 class GLImageImpl : public gfx::GLImage {
  21  public:
  22   GLImageImpl(const scoped_refptr<gfx::SurfaceTexture>& surface_texture,
  23               const base::Closure& release_callback);
  24
  25   // implement gfx::GLImage
  26   virtual void Destroy(bool have_context) OVERRIDE;
  27   virtual gfx::Size GetSize() OVERRIDE;
  28   virtual bool BindTexImage(unsigned target) OVERRIDE;
  29   virtual void ReleaseTexImage(unsigned target) OVERRIDE;
  30   virtual bool CopyTexImage(unsigned target) OVERRIDE;
  31   virtual void WillUseTexImage() OVERRIDE;
  32   virtual void DidUseTexImage() OVERRIDE {}
  33   virtual void WillModifyTexImage() OVERRIDE {}
  34   virtual void DidModifyTexImage() OVERRIDE {}
  35   virtual bool ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  36                                     int z_order,
  37                                     gfx::OverlayTransform transform,
  38                                     const gfx::Rect& bounds_rect,
  39                                     const gfx::RectF& crop_rect) OVERRIDE;
  40
  41  private:
  42   virtual ~GLImageImpl();
  43
  44   scoped_refptr<gfx::SurfaceTexture> surface_texture_;
  45   base::Closure release_callback_;
  46
  47   DISALLOW_COPY_AND_ASSIGN(GLImageImpl);
  48 };
  49
  50 GLImageImpl::GLImageImpl(
  51     const scoped_refptr<gfx::SurfaceTexture>& surface_texture,
  52     const base::Closure& release_callback)
  53     : surface_texture_(surface_texture), release_callback_(release_callback) {}
  54
  55 GLImageImpl::~GLImageImpl() {
  56   release_callback_.Run();
  57 }
  58
  59 void GLImageImpl::Destroy(bool have_context) {
  60   NOTREACHED();
  61 }
  62
  63 gfx::Size GLImageImpl::GetSize() {
  64   return gfx::Size();
  65 }
  66
  67 bool GLImageImpl::BindTexImage(unsigned target) {
  68   NOTREACHED();
  69   return false;
  70 }
  71
  72 void GLImageImpl::ReleaseTexImage(unsigned target) {
  73   NOTREACHED();
  74 }
  75
  76 bool GLImageImpl::CopyTexImage(unsigned target) {
  77   return false;
  78 }
  79
  80 void GLImageImpl::WillUseTexImage() {
  81   surface_texture_->UpdateTexImage();
  82 }
  83
  84 bool GLImageImpl::ScheduleOverlayPlane(gfx::AcceleratedWidget widget,
  85                                        int z_order,
  86                                        gfx::OverlayTransform transform,
  87                                        const gfx::Rect& bounds_rect,
  88                                        const gfx::RectF& crop_rect) {
  89   NOTREACHED();
  90   return false;
  91 }
  92
  93 }  // anonymous namespace
  94
  95 StreamTextureManagerInProcess::StreamTextureManagerInProcess()
  96     : next_id_(1), weak_factory_(this) {}
  97
  98 StreamTextureManagerInProcess::~StreamTextureManagerInProcess() {
  99   if (!textures_.empty()) {
 100     LOG(WARNING) << "Undestroyed surface textures while tearing down "
 101                     "StreamTextureManager.";
 102   }
 103 }
 104
 105 GLuint StreamTextureManagerInProcess::CreateStreamTexture(
 106     uint32 client_texture_id,
 107     gles2::TextureManager* texture_manager) {
 108   CalledOnValidThread();
 109
 110   gles2::TextureRef* texture = texture_manager->GetTexture(client_texture_id);
 111
 112   if (!texture || (texture->texture()->target() &&
 113                    texture->texture()->target() != GL_TEXTURE_EXTERNAL_OES)) {
 114     return 0;
 115   }
 116
 117   scoped_refptr<gfx::SurfaceTexture> surface_texture(
 118       gfx::SurfaceTexture::Create(texture->service_id()));
 119
 120   uint32 stream_id = next_id_++;
 121   base::Closure release_callback =
 122       base::Bind(&StreamTextureManagerInProcess::OnReleaseStreamTexture,
 123                  weak_factory_.GetWeakPtr(), stream_id);
 124   scoped_refptr<gfx::GLImage> gl_image(new GLImageImpl(surface_texture,
 125                                        release_callback));
 126
 127   gfx::Size size = gl_image->GetSize();
 128   texture_manager->SetTarget(texture, GL_TEXTURE_EXTERNAL_OES);
 129   texture_manager->SetLevelInfo(texture,
 130                                 GL_TEXTURE_EXTERNAL_OES,
 131                                 0,
 132                                 GL_RGBA,
 133                                 size.width(),
 134                                 size.height(),
 135                                 1,
 136                                 0,
 137                                 GL_RGBA,
 138                                 GL_UNSIGNED_BYTE,
 139                                 true);
 140   texture_manager->SetLevelImage(texture, GL_TEXTURE_EXTERNAL_OES, 0, gl_image);
 141
 142   {
 143     base::AutoLock lock(map_lock_);
 144     textures_[stream_id] = surface_texture;
 145   }
 146
 147   if (next_id_ == 0)
 148     next_id_++;
 149
 150   return stream_id;
 151 }
 152
 153 void StreamTextureManagerInProcess::OnReleaseStreamTexture(uint32 stream_id) {
 154   CalledOnValidThread();
 155   base::AutoLock lock(map_lock_);
 156   textures_.erase(stream_id);
 157 }
 158
 159 // This can get called from any thread.
 160 scoped_refptr<gfx::SurfaceTexture>
 161 StreamTextureManagerInProcess::GetSurfaceTexture(uint32 stream_id) {
 162   base::AutoLock lock(map_lock_);
 163   TextureMap::const_iterator it = textures_.find(stream_id);
 164   if (it != textures_.end())
 165     return it->second;
 166
 167   return NULL;
 168 }
 169
 170 }  // namespace gpu