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/video_frame_provider_client_impl.h"
  10 #include "cc/quads/io_surface_draw_quad.h"
  11 #include "cc/quads/stream_video_draw_quad.h"
  12 #include "cc/quads/texture_draw_quad.h"
  13 #include "cc/quads/yuv_video_draw_quad.h"
  14 #include "cc/resources/resource_provider.h"
  15 #include "cc/resources/single_release_callback_impl.h"
  16 #include "cc/trees/layer_tree_impl.h"
  17 #include "cc/trees/occlusion.h"
  18 #include "cc/trees/proxy.h"
  19 #include "media/base/video_frame.h"
  20
  21 #if defined(VIDEO_HOLE)
  22 #include "cc/quads/solid_color_draw_quad.h"
  23 #endif  // defined(VIDEO_HOLE)
  24
  25 namespace cc {
  26
  27 // static
  28 scoped_ptr<VideoLayerImpl> VideoLayerImpl::Create(
  29     LayerTreeImpl* tree_impl,
  30     int id,
  31     VideoFrameProvider* provider,
  32     media::VideoRotation video_rotation) {
  33   DCHECK(tree_impl->proxy()->IsMainThreadBlocked());
  34   DCHECK(tree_impl->proxy()->IsImplThread());
  35
  36   scoped_refptr<VideoFrameProviderClientImpl> provider_client_impl =
  37       VideoFrameProviderClientImpl::Create(
  38           provider, tree_impl->GetVideoFrameControllerClient());
  39
  40   return make_scoped_ptr(
  41       new VideoLayerImpl(tree_impl, id, provider_client_impl, video_rotation));
  42 }
  43
  44 VideoLayerImpl::VideoLayerImpl(
  45     LayerTreeImpl* tree_impl,
  46     int id,
  47     const scoped_refptr<VideoFrameProviderClientImpl>& provider_client_impl,
  48     media::VideoRotation video_rotation)
  49     : LayerImpl(tree_impl, id),
  50       provider_client_impl_(provider_client_impl),
  51       frame_(nullptr),
  52       video_rotation_(video_rotation) {
  53 }
  54
  55 VideoLayerImpl::~VideoLayerImpl() {
  56   if (!provider_client_impl_->Stopped()) {
  57     // In impl side painting, we may have a pending and active layer
  58     // associated with the video provider at the same time. Both have a ref
  59     // on the VideoFrameProviderClientImpl, but we stop when the first
  60     // LayerImpl (the one on the pending tree) is destroyed since we know
  61     // the main thread is blocked for this commit.
  62     DCHECK(layer_tree_impl()->proxy()->IsImplThread());
  63     DCHECK(layer_tree_impl()->proxy()->IsMainThreadBlocked());
  64     provider_client_impl_->Stop();
  65   }
  66 }
  67
  68 scoped_ptr<LayerImpl> VideoLayerImpl::CreateLayerImpl(
  69     LayerTreeImpl* tree_impl) {
  70   return make_scoped_ptr(new VideoLayerImpl(
  71       tree_impl, id(), provider_client_impl_, video_rotation_));
  72 }
  73
  74 void VideoLayerImpl::DidBecomeActive() {
  75   provider_client_impl_->SetActiveVideoLayer(this);
  76 }
  77
  78 bool VideoLayerImpl::WillDraw(DrawMode draw_mode,
  79                               ResourceProvider* resource_provider) {
  80   if (draw_mode == DRAW_MODE_RESOURCELESS_SOFTWARE)
  81     return false;
  82
  83   // Explicitly acquire and release the provider mutex so it can be held from
  84   // WillDraw to DidDraw. Since the compositor thread is in the middle of
  85   // drawing, the layer will not be destroyed before DidDraw is called.
  86   // Therefore, the only thing that will prevent this lock from being released
  87   // is the GPU process locking it. As the GPU process can't cause the
  88   // destruction of the provider (calling StopUsingProvider), holding this
  89   // lock should not cause a deadlock.
  90   frame_ = provider_client_impl_->AcquireLockAndCurrentFrame();
  91
  92   if (!frame_.get()) {
  93     // Drop any resources used by the updater if there is no frame to display.
  94     updater_ = nullptr;
  95
  96     provider_client_impl_->ReleaseLock();
  97     return false;
  98   }
  99
 100   if (!LayerImpl::WillDraw(draw_mode, resource_provider))
 101     return false;
 102
 103   if (!updater_) {
 104     updater_.reset(
 105         new VideoResourceUpdater(layer_tree_impl()->context_provider(),
 106                                  layer_tree_impl()->resource_provider()));
 107   }
 108
 109   VideoFrameExternalResources external_resources =
 110       updater_->CreateExternalResourcesFromVideoFrame(frame_);
 111   frame_resource_type_ = external_resources.type;
 112
 113   if (external_resources.type ==
 114       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 115     software_resources_ = external_resources.software_resources;
 116     software_release_callback_ =
 117         external_resources.software_release_callback;
 118     return true;
 119   }
 120
 121   DCHECK_EQ(external_resources.mailboxes.size(),
 122             external_resources.release_callbacks.size());
 123   for (size_t i = 0; i < external_resources.mailboxes.size(); ++i) {
 124     unsigned resource_id = resource_provider->CreateResourceFromTextureMailbox(
 125         external_resources.mailboxes[i],
 126         SingleReleaseCallbackImpl::Create(
 127             external_resources.release_callbacks[i]));
 128     frame_resources_.push_back(resource_id);
 129   }
 130
 131   return true;
 132 }
 133
 134 void VideoLayerImpl::AppendQuads(RenderPass* render_pass,
 135                                  AppendQuadsData* append_quads_data) {
 136   DCHECK(frame_.get());
 137
 138   gfx::Transform transform = draw_transform();
 139   gfx::Size rotated_size = content_bounds();
 140
 141   switch (video_rotation_) {
 142     case media::VIDEO_ROTATION_90:
 143       rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
 144       transform.Rotate(90.0);
 145       transform.Translate(0.0, -rotated_size.height());
 146       break;
 147     case media::VIDEO_ROTATION_180:
 148       transform.Rotate(180.0);
 149       transform.Translate(-rotated_size.width(), -rotated_size.height());
 150       break;
 151     case media::VIDEO_ROTATION_270:
 152       rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
 153       transform.Rotate(270.0);
 154       transform.Translate(-rotated_size.width(), 0);
 155     case media::VIDEO_ROTATION_0:
 156       break;
 157   }
 158
 159   SharedQuadState* shared_quad_state =
 160       render_pass->CreateAndAppendSharedQuadState();
 161   shared_quad_state->SetAll(transform, rotated_size, visible_content_rect(),
 162                             clip_rect(), is_clipped(), draw_opacity(),
 163                             draw_blend_mode(), sorting_context_id());
 164
 165   AppendDebugBorderQuad(
 166       render_pass, rotated_size, shared_quad_state, append_quads_data);
 167
 168   gfx::Rect quad_rect(rotated_size);
 169   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 170   gfx::Rect visible_rect = frame_->visible_rect();
 171   gfx::Size coded_size = frame_->coded_size();
 172
 173   Occlusion occlusion_in_video_space =
 174       draw_properties()
 175           .occlusion_in_content_space.GetOcclusionWithGivenDrawTransform(
 176               transform);
 177   gfx::Rect visible_quad_rect =
 178       occlusion_in_video_space.GetUnoccludedContentRect(quad_rect);
 179   if (visible_quad_rect.IsEmpty())
 180     return;
 181
 182   // Pixels for macroblocked formats.
 183   const float tex_width_scale =
 184       static_cast<float>(visible_rect.width()) / coded_size.width();
 185   const float tex_height_scale =
 186       static_cast<float>(visible_rect.height()) / coded_size.height();
 187
 188   switch (frame_resource_type_) {
 189     // TODO(danakj): Remove this, hide it in the hardware path.
 190     case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
 191       DCHECK_EQ(frame_resources_.size(), 0u);
 192       DCHECK_EQ(software_resources_.size(), 1u);
 193       if (software_resources_.size() < 1u)
 194         break;
 195       bool premultiplied_alpha = true;
 196       gfx::PointF uv_top_left(0.f, 0.f);
 197       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 198       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 199       bool flipped = false;
 200       bool nearest_neighbor = false;
 201       TextureDrawQuad* texture_quad =
 202           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 203       texture_quad->SetNew(shared_quad_state,
 204                            quad_rect,
 205                            opaque_rect,
 206                            visible_quad_rect,
 207                            software_resources_[0],
 208                            premultiplied_alpha,
 209                            uv_top_left,
 210                            uv_bottom_right,
 211                            SK_ColorTRANSPARENT,
 212                            opacity,
 213                            flipped,
 214                            nearest_neighbor);
 215       ValidateQuadResources(texture_quad);
 216       break;
 217     }
 218     case VideoFrameExternalResources::YUV_RESOURCE: {
 219       DCHECK_GE(frame_resources_.size(), 3u);
 220
 221       YUVVideoDrawQuad::ColorSpace color_space = YUVVideoDrawQuad::REC_601;
 222       if (frame_->format() == media::VideoFrame::YV12J) {
 223         color_space = YUVVideoDrawQuad::JPEG;
 224       } else if (frame_->format() == media::VideoFrame::YV12HD) {
 225         color_space = YUVVideoDrawQuad::REC_709;
 226       }
 227
 228       const gfx::Size ya_tex_size = coded_size;
 229       gfx::Size uv_tex_size;
 230
 231       if (frame_->format() == media::VideoFrame::NATIVE_TEXTURE) {
 232         DCHECK_EQ(media::VideoFrame::TEXTURE_YUV_420, frame_->texture_format());
 233         DCHECK_EQ(3u, frame_resources_.size());  // Alpha is not supported yet.
 234         DCHECK(visible_rect.origin().IsOrigin());
 235         DCHECK(visible_rect.size() == coded_size);
 236         uv_tex_size.SetSize((ya_tex_size.width() + 1) / 2,
 237                             (ya_tex_size.height() + 1) / 2);
 238       } else {
 239         uv_tex_size = media::VideoFrame::PlaneSize(
 240             frame_->format(), media::VideoFrame::kUPlane, coded_size);
 241         DCHECK(uv_tex_size ==
 242                media::VideoFrame::PlaneSize(
 243                    frame_->format(), media::VideoFrame::kVPlane, coded_size));
 244         DCHECK_IMPLIES(
 245             frame_resources_.size() > 3,
 246             ya_tex_size ==
 247                 media::VideoFrame::PlaneSize(
 248                     frame_->format(), media::VideoFrame::kAPlane, coded_size));
 249       }
 250
 251       // Compute the UV sub-sampling factor based on the ratio between
 252       // |ya_tex_size| and |uv_tex_size|.
 253       float uv_subsampling_factor_x =
 254           static_cast<float>(ya_tex_size.width()) / uv_tex_size.width();
 255       float uv_subsampling_factor_y =
 256           static_cast<float>(ya_tex_size.height()) / uv_tex_size.height();
 257       gfx::RectF ya_tex_coord_rect(visible_rect);
 258       gfx::RectF uv_tex_coord_rect(
 259           visible_rect.x() / uv_subsampling_factor_x,
 260           visible_rect.y() / uv_subsampling_factor_y,
 261           visible_rect.width() / uv_subsampling_factor_x,
 262           visible_rect.height() / uv_subsampling_factor_y);
 263
 264       YUVVideoDrawQuad* yuv_video_quad =
 265           render_pass->CreateAndAppendDrawQuad<YUVVideoDrawQuad>();
 266       yuv_video_quad->SetNew(
 267           shared_quad_state, quad_rect, opaque_rect, visible_quad_rect,
 268           ya_tex_coord_rect, uv_tex_coord_rect, ya_tex_size, uv_tex_size,
 269           frame_resources_[0], frame_resources_[1], frame_resources_[2],
 270           frame_resources_.size() > 3 ? frame_resources_[3] : 0, color_space);
 271       ValidateQuadResources(yuv_video_quad);
 272       break;
 273     }
 274     case VideoFrameExternalResources::RGBA_RESOURCE:
 275     case VideoFrameExternalResources::RGB_RESOURCE: {
 276       DCHECK_EQ(frame_resources_.size(), 1u);
 277       if (frame_resources_.size() < 1u)
 278         break;
 279       bool premultiplied_alpha =
 280           (frame_resource_type_ == VideoFrameExternalResources::RGBA_RESOURCE);
 281       gfx::PointF uv_top_left(0.f, 0.f);
 282       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 283       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 284       bool flipped = false;
 285       bool nearest_neighbor = false;
 286       TextureDrawQuad* texture_quad =
 287           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 288       texture_quad->SetNew(shared_quad_state,
 289                            quad_rect,
 290                            opaque_rect,
 291                            visible_quad_rect,
 292                            frame_resources_[0],
 293                            premultiplied_alpha,
 294                            uv_top_left,
 295                            uv_bottom_right,
 296                            SK_ColorTRANSPARENT,
 297                            opacity,
 298                            flipped,
 299                            nearest_neighbor);
 300       ValidateQuadResources(texture_quad);
 301       break;
 302     }
 303     case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
 304       DCHECK_EQ(frame_resources_.size(), 1u);
 305       if (frame_resources_.size() < 1u)
 306         break;
 307       gfx::Transform scale;
 308       scale.Scale(tex_width_scale, tex_height_scale);
 309       StreamVideoDrawQuad* stream_video_quad =
 310           render_pass->CreateAndAppendDrawQuad<StreamVideoDrawQuad>();
 311       stream_video_quad->SetNew(
 312           shared_quad_state, quad_rect, opaque_rect, visible_quad_rect,
 313           frame_resources_[0],
 314           scale * provider_client_impl_->StreamTextureMatrix());
 315       ValidateQuadResources(stream_video_quad);
 316       break;
 317     }
 318     case VideoFrameExternalResources::IO_SURFACE: {
 319       DCHECK_EQ(frame_resources_.size(), 1u);
 320       if (frame_resources_.size() < 1u)
 321         break;
 322       IOSurfaceDrawQuad* io_surface_quad =
 323           render_pass->CreateAndAppendDrawQuad<IOSurfaceDrawQuad>();
 324       io_surface_quad->SetNew(shared_quad_state,
 325                               quad_rect,
 326                               opaque_rect,
 327                               visible_quad_rect,
 328                               visible_rect.size(),
 329                               frame_resources_[0],
 330                               IOSurfaceDrawQuad::UNFLIPPED);
 331       ValidateQuadResources(io_surface_quad);
 332       break;
 333     }
 334 #if defined(VIDEO_HOLE)
 335     // This block and other blocks wrapped around #if defined(VIDEO_HOLE) is not
 336     // maintained by the general compositor team. Please contact the following
 337     // people instead:
 338     //
 339     // wonsik@chromium.org
 340     // lcwu@chromium.org
 341     case VideoFrameExternalResources::HOLE: {
 342       DCHECK_EQ(frame_resources_.size(), 0u);
 343       SolidColorDrawQuad* solid_color_draw_quad =
 344           render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
 345
 346       // Create a solid color quad with transparent black and force no
 347       // blending / no anti-aliasing.
 348       gfx::Rect opaque_rect = quad_rect;
 349       solid_color_draw_quad->SetAll(shared_quad_state,
 350                                     quad_rect,
 351                                     opaque_rect,
 352                                     visible_quad_rect,
 353                                     false,
 354                                     SK_ColorTRANSPARENT,
 355                                     true);
 356       break;
 357     }
 358 #endif  // defined(VIDEO_HOLE)
 359     case VideoFrameExternalResources::NONE:
 360       NOTIMPLEMENTED();
 361       break;
 362   }
 363 }
 364
 365 void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
 366   LayerImpl::DidDraw(resource_provider);
 367
 368   DCHECK(frame_.get());
 369
 370   if (frame_resource_type_ ==
 371       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 372     for (size_t i = 0; i < software_resources_.size(); ++i) {
 373       software_release_callback_.Run(
 374           0, false, layer_tree_impl()->BlockingMainThreadTaskRunner());
 375     }
 376
 377     software_resources_.clear();
 378     software_release_callback_.Reset();
 379   } else {
 380     for (size_t i = 0; i < frame_resources_.size(); ++i)
 381       resource_provider->DeleteResource(frame_resources_[i]);
 382     frame_resources_.clear();
 383   }
 384
 385   provider_client_impl_->PutCurrentFrame();
 386   frame_ = nullptr;
 387
 388   provider_client_impl_->ReleaseLock();
 389 }
 390
 391 void VideoLayerImpl::ReleaseResources() {
 392   updater_ = nullptr;
 393 }
 394
 395 void VideoLayerImpl::SetNeedsRedraw() {
 396   SetUpdateRect(gfx::UnionRects(update_rect(), gfx::Rect(bounds())));
 397   layer_tree_impl()->SetNeedsRedraw();
 398 }
 399
 400 const char* VideoLayerImpl::LayerTypeAsString() const {
 401   return "cc::VideoLayerImpl";
 402 }
 403
 404 }  // namespace cc