src/cc/layers/video_layer_impl.cc

   1 // Copyright 2011 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 "cc/layers/video_layer_impl.h"
   6
   7 #include "base/bind.h"
   8 #include "base/logging.h"
   9 #include "cc/layers/quad_sink.h"
  10 #include "cc/layers/video_frame_provider_client_impl.h"
  11 #include "cc/quads/io_surface_draw_quad.h"
  12 #include "cc/quads/stream_video_draw_quad.h"
  13 #include "cc/quads/texture_draw_quad.h"
  14 #include "cc/quads/yuv_video_draw_quad.h"
  15 #include "cc/resources/resource_provider.h"
  16 #include "cc/resources/single_release_callback.h"
  17 #include "cc/trees/layer_tree_impl.h"
  18 #include "cc/trees/proxy.h"
  19 #include "media/base/video_frame.h"
  20
  21 #if defined(GOOGLE_TV)
  22 #include "cc/quads/solid_color_draw_quad.h"
  23 #endif
  24
  25 namespace cc {
  26
  27 // static
  28 scoped_ptr<VideoLayerImpl> VideoLayerImpl::Create(
  29     LayerTreeImpl* tree_impl,
  30     int id,
  31     VideoFrameProvider* provider) {
  32   scoped_ptr<VideoLayerImpl> layer(new VideoLayerImpl(tree_impl, id));
  33   layer->SetProviderClientImpl(VideoFrameProviderClientImpl::Create(provider));
  34   DCHECK(tree_impl->proxy()->IsImplThread());
  35   DCHECK(tree_impl->proxy()->IsMainThreadBlocked());
  36   return layer.Pass();
  37 }
  38
  39 VideoLayerImpl::VideoLayerImpl(LayerTreeImpl* tree_impl, int id)
  40     : LayerImpl(tree_impl, id),
  41       frame_(NULL) {}
  42
  43 VideoLayerImpl::~VideoLayerImpl() {
  44   if (!provider_client_impl_->Stopped()) {
  45     // In impl side painting, we may have a pending and active layer
  46     // associated with the video provider at the same time. Both have a ref
  47     // on the VideoFrameProviderClientImpl, but we stop when the first
  48     // LayerImpl (the one on the pending tree) is destroyed since we know
  49     // the main thread is blocked for this commit.
  50     DCHECK(layer_tree_impl()->proxy()->IsImplThread());
  51     DCHECK(layer_tree_impl()->proxy()->IsMainThreadBlocked());
  52     provider_client_impl_->Stop();
  53   }
  54 }
  55
  56 scoped_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
  57     LayerTreeImpl* tree_impl) {
  58   return scoped_ptr<LayerImpl>(new VideoLayerImpl(tree_impl, id()));
  59 }
  60
  61 void VideoLayerImpl::PushPropertiesTo(LayerImpl* layer) {
  62   LayerImpl::PushPropertiesTo(layer);
  63
  64   VideoLayerImpl* other = static_cast<VideoLayerImpl*>(layer);
  65   other->SetProviderClientImpl(provider_client_impl_);
  66 }
  67
  68 void VideoLayerImpl::DidBecomeActive() {
  69   provider_client_impl_->set_active_video_layer(this);
  70 }
  71
  72 bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
  73                               ResourceProvider* resource_provider) {
  74   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
  75     return false;
  76
  77   // Explicitly acquire and release the provider mutex so it can be held from
  78   // WillDraw to DidDraw. Since the compositor thread is in the middle of
  79   // drawing, the layer will not be destroyed before DidDraw is called.
  80   // Therefore, the only thing that will prevent this lock from being released
  81   // is the GPU process locking it. As the GPU process can't cause the
  82   // destruction of the provider (calling StopUsingProvider), holding this
  83   // lock should not cause a deadlock.
  84   frame_ = provider_client_impl_->AcquireLockAndCurrentFrame();
  85
  86   if (!frame_.get()) {
  87     // Drop any resources used by the updater if there is no frame to display.
  88     updater_.reset();
  89
  90     provider_client_impl_->ReleaseLock();
  91     return false;
  92   }
  93
  94   if (!LayerImpl::WillDraw(draw_mode, resource_provider))
  95     return false;
  96
  97   if (!updater_) {
  98     updater_.reset(
  99         new VideoResourceUpdater(layer_tree_impl()->context_provider(),
 100                                  layer_tree_impl()->resource_provider()));
 101   }
 102
 103   VideoFrameExternalResources external_resources =
 104       updater_->CreateExternalResourcesFromVideoFrame(frame_);
 105   frame_resource_type_ = external_resources.type;
 106
 107   if (external_resources.type ==
 108       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 109     software_resources_ = external_resources.software_resources;
 110     software_release_callback_ =
 111         external_resources.software_release_callback;
 112     return true;
 113   }
 114
 115   DCHECK_EQ(external_resources.mailboxes.size(),
 116             external_resources.release_callbacks.size());
 117   for (size_t i = 0; i < external_resources.mailboxes.size(); ++i) {
 118     unsigned resource_id = resource_provider->CreateResourceFromTextureMailbox(
 119         external_resources.mailboxes[i],
 120         SingleReleaseCallback::Create(external_resources.release_callbacks[i]));
 121     frame_resources_.push_back(resource_id);
 122   }
 123
 124   return true;
 125 }
 126
 127 void VideoLayerImpl::AppendQuads(QuadSink* quad_sink,
 128                                  AppendQuadsData* append_quads_data) {
 129   DCHECK(frame_.get());
 130
 131   SharedQuadState* shared_quad_state =
 132       quad_sink->UseSharedQuadState(CreateSharedQuadState());
 133   AppendDebugBorderQuad(quad_sink, shared_quad_state, append_quads_data);
 134
 135   gfx::Rect quad_rect(content_bounds());
 136   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 137   gfx::Rect visible_rect = frame_->visible_rect();
 138   gfx::Size coded_size = frame_->coded_size();
 139
 140   // Pixels for macroblocked formats.
 141   float tex_width_scale =
 142       static_cast<float>(visible_rect.width()) / coded_size.width();
 143   float tex_height_scale =
 144       static_cast<float>(visible_rect.height()) / coded_size.height();
 145
 146   switch (frame_resource_type_) {
 147     // TODO(danakj): Remove this, hide it in the hardware path.
 148     case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
 149       DCHECK_EQ(frame_resources_.size(), 0u);
 150       DCHECK_EQ(software_resources_.size(), 1u);
 151       if (software_resources_.size() < 1u)
 152         break;
 153       bool premultiplied_alpha = true;
 154       gfx::PointF uv_top_left(0.f, 0.f);
 155       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 156       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 157       bool flipped = false;
 158       scoped_ptr<TextureDrawQuad> texture_quad = TextureDrawQuad::Create();
 159       texture_quad->SetNew(shared_quad_state,
 160                            quad_rect,
 161                            opaque_rect,
 162                            software_resources_[0],
 163                            premultiplied_alpha,
 164                            uv_top_left,
 165                            uv_bottom_right,
 166                            SK_ColorTRANSPARENT,
 167                            opacity,
 168                            flipped);
 169       quad_sink->Append(texture_quad.PassAs<DrawQuad>(), append_quads_data);
 170       break;
 171     }
 172     case VideoFrameExternalResources::YUV_RESOURCE: {
 173       DCHECK_GE(frame_resources_.size(), 3u);
 174       if (frame_resources_.size() < 3u)
 175         break;
 176       gfx::SizeF tex_scale(tex_width_scale, tex_height_scale);
 177       scoped_ptr<YUVVideoDrawQuad> yuv_video_quad = YUVVideoDrawQuad::Create();
 178       yuv_video_quad->SetNew(shared_quad_state,
 179                              quad_rect,
 180                              opaque_rect,
 181                              tex_scale,
 182                              frame_resources_[0],
 183                              frame_resources_[1],
 184                              frame_resources_[2],
 185                              frame_resources_.size() > 3 ?
 186                                  frame_resources_[3] : 0);
 187       quad_sink->Append(yuv_video_quad.PassAs<DrawQuad>(), append_quads_data);
 188       break;
 189     }
 190     case VideoFrameExternalResources::RGB_RESOURCE: {
 191       DCHECK_EQ(frame_resources_.size(), 1u);
 192       if (frame_resources_.size() < 1u)
 193         break;
 194       bool premultiplied_alpha = true;
 195       gfx::PointF uv_top_left(0.f, 0.f);
 196       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 197       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 198       bool flipped = false;
 199       scoped_ptr<TextureDrawQuad> texture_quad = TextureDrawQuad::Create();
 200       texture_quad->SetNew(shared_quad_state,
 201                            quad_rect,
 202                            opaque_rect,
 203                            frame_resources_[0],
 204                            premultiplied_alpha,
 205                            uv_top_left,
 206                            uv_bottom_right,
 207                            SK_ColorTRANSPARENT,
 208                            opacity,
 209                            flipped);
 210       quad_sink->Append(texture_quad.PassAs<DrawQuad>(), append_quads_data);
 211       break;
 212     }
 213     case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
 214       DCHECK_EQ(frame_resources_.size(), 1u);
 215       if (frame_resources_.size() < 1u)
 216         break;
 217       gfx::Transform transform(
 218           provider_client_impl_->stream_texture_matrix());
 219       transform.Scale(tex_width_scale, tex_height_scale);
 220       scoped_ptr<StreamVideoDrawQuad> stream_video_quad =
 221           StreamVideoDrawQuad::Create();
 222       stream_video_quad->SetNew(shared_quad_state,
 223                                 quad_rect,
 224                                 opaque_rect,
 225                                 frame_resources_[0],
 226                                 transform);
 227       quad_sink->Append(stream_video_quad.PassAs<DrawQuad>(),
 228                         append_quads_data);
 229       break;
 230     }
 231     case VideoFrameExternalResources::IO_SURFACE: {
 232       DCHECK_EQ(frame_resources_.size(), 1u);
 233       if (frame_resources_.size() < 1u)
 234         break;
 235       gfx::Size visible_size(visible_rect.width(), visible_rect.height());
 236       scoped_ptr<IOSurfaceDrawQuad> io_surface_quad =
 237           IOSurfaceDrawQuad::Create();
 238       io_surface_quad->SetNew(shared_quad_state,
 239                               quad_rect,
 240                               opaque_rect,
 241                               visible_size,
 242                               frame_resources_[0],
 243                               IOSurfaceDrawQuad::UNFLIPPED);
 244       quad_sink->Append(io_surface_quad.PassAs<DrawQuad>(),
 245                         append_quads_data);
 246       break;
 247     }
 248 #if defined(GOOGLE_TV)
 249     // This block and other blocks wrapped around #if defined(GOOGLE_TV) is not
 250     // maintained by the general compositor team. Please contact the following
 251     // people instead:
 252     //
 253     // wonsik@chromium.org
 254     // ycheo@chromium.org
 255     case VideoFrameExternalResources::HOLE: {
 256       DCHECK_EQ(frame_resources_.size(), 0u);
 257       scoped_ptr<SolidColorDrawQuad> solid_color_draw_quad =
 258           SolidColorDrawQuad::Create();
 259
 260       // Create a solid color quad with transparent black and force no
 261       // blending / no anti-aliasing.
 262       solid_color_draw_quad->SetAll(
 263           shared_quad_state, quad_rect, quad_rect, quad_rect, false,
 264           SK_ColorTRANSPARENT, true);
 265       quad_sink->Append(solid_color_draw_quad.PassAs<DrawQuad>(),
 266                         append_quads_data);
 267       break;
 268     }
 269 #endif
 270     case VideoFrameExternalResources::NONE:
 271       NOTIMPLEMENTED();
 272       break;
 273   }
 274 }
 275
 276 void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
 277   LayerImpl::DidDraw(resource_provider);
 278
 279   DCHECK(frame_.get());
 280
 281   if (frame_resource_type_ ==
 282       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 283     for (size_t i = 0; i < software_resources_.size(); ++i)
 284       software_release_callback_.Run(0, false);
 285
 286     software_resources_.clear();
 287     software_release_callback_.Reset();
 288   } else {
 289     for (size_t i = 0; i < frame_resources_.size(); ++i)
 290       resource_provider->DeleteResource(frame_resources_[i]);
 291     frame_resources_.clear();
 292   }
 293
 294   provider_client_impl_->PutCurrentFrame(frame_);
 295   frame_ = NULL;
 296
 297   provider_client_impl_->ReleaseLock();
 298 }
 299
 300 void VideoLayerImpl::DidLoseOutputSurface() {
 301   updater_.reset();
 302 }
 303
 304 void VideoLayerImpl::SetNeedsRedraw() {
 305   set_update_rect(gfx::UnionRects(update_rect(), gfx::RectF(bounds())));
 306   layer_tree_impl()->SetNeedsRedraw();
 307 }
 308
 309 void VideoLayerImpl::SetProviderClientImpl(
 310     scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl) {
 311   provider_client_impl_ = provider_client_impl;
 312 }
 313
 314 const char* VideoLayerImpl::LayerTypeAsString() const {
 315   return "cc::VideoLayerImpl";
 316 }
 317
 318 }  // namespace cc