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         external_resources.read_lock_fences_enabled);
 129     frame_resources_.push_back(FrameResource(
 130         resource_id, external_resources.mailboxes[i].size_in_pixels(),
 131         external_resources.mailboxes[i].allow_overlay()));
 132   }
 133
 134   return true;
 135 }
 136
 137 void VideoLayerImpl::AppendQuads(RenderPass* render_pass,
 138                                  AppendQuadsData* append_quads_data) {
 139   DCHECK(frame_.get());
 140
 141   gfx::Transform transform = draw_transform();
 142   gfx::Size rotated_size = bounds();
 143
 144   switch (video_rotation_) {
 145     case media::VIDEO_ROTATION_90:
 146       rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
 147       transform.Rotate(90.0);
 148       transform.Translate(0.0, -rotated_size.height());
 149       break;
 150     case media::VIDEO_ROTATION_180:
 151       transform.Rotate(180.0);
 152       transform.Translate(-rotated_size.width(), -rotated_size.height());
 153       break;
 154     case media::VIDEO_ROTATION_270:
 155       rotated_size = gfx::Size(rotated_size.height(), rotated_size.width());
 156       transform.Rotate(270.0);
 157       transform.Translate(-rotated_size.width(), 0);
 158     case media::VIDEO_ROTATION_0:
 159       break;
 160   }
 161
 162   SharedQuadState* shared_quad_state =
 163       render_pass->CreateAndAppendSharedQuadState();
 164   shared_quad_state->SetAll(transform, rotated_size, visible_layer_rect(),
 165                             clip_rect(), is_clipped(), draw_opacity(),
 166                             draw_blend_mode(), sorting_context_id());
 167
 168   AppendDebugBorderQuad(
 169       render_pass, rotated_size, shared_quad_state, append_quads_data);
 170
 171   gfx::Rect quad_rect(rotated_size);
 172   gfx::Rect opaque_rect(contents_opaque() ? quad_rect : gfx::Rect());
 173   gfx::Rect visible_rect = frame_->visible_rect();
 174   gfx::Size coded_size = frame_->coded_size();
 175
 176   Occlusion occlusion_in_video_space =
 177       draw_properties()
 178           .occlusion_in_content_space.GetOcclusionWithGivenDrawTransform(
 179               transform);
 180   gfx::Rect visible_quad_rect =
 181       occlusion_in_video_space.GetUnoccludedContentRect(quad_rect);
 182   if (visible_quad_rect.IsEmpty())
 183     return;
 184
 185   // Pixels for macroblocked formats.
 186   const float tex_width_scale =
 187       static_cast<float>(visible_rect.width()) / coded_size.width();
 188   const float tex_height_scale =
 189       static_cast<float>(visible_rect.height()) / coded_size.height();
 190
 191   switch (frame_resource_type_) {
 192     // TODO(danakj): Remove this, hide it in the hardware path.
 193     case VideoFrameExternalResources::SOFTWARE_RESOURCE: {
 194       DCHECK_EQ(frame_resources_.size(), 0u);
 195       DCHECK_EQ(software_resources_.size(), 1u);
 196       if (software_resources_.size() < 1u)
 197         break;
 198       bool premultiplied_alpha = true;
 199       gfx::PointF uv_top_left(0.f, 0.f);
 200       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 201       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 202       bool flipped = false;
 203       bool nearest_neighbor = false;
 204       TextureDrawQuad* texture_quad =
 205           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 206       texture_quad->SetNew(shared_quad_state,
 207                            quad_rect,
 208                            opaque_rect,
 209                            visible_quad_rect,
 210                            software_resources_[0],
 211                            premultiplied_alpha,
 212                            uv_top_left,
 213                            uv_bottom_right,
 214                            SK_ColorTRANSPARENT,
 215                            opacity,
 216                            flipped,
 217                            nearest_neighbor);
 218       ValidateQuadResources(texture_quad);
 219       break;
 220     }
 221     case VideoFrameExternalResources::YUV_RESOURCE: {
 222       DCHECK_GE(frame_resources_.size(), 3u);
 223
 224       YUVVideoDrawQuad::ColorSpace color_space = YUVVideoDrawQuad::REC_601;
 225       int videoframe_color_space;
 226       if (frame_->metadata()->GetInteger(media::VideoFrameMetadata::COLOR_SPACE,
 227                                          &videoframe_color_space)) {
 228         if (videoframe_color_space == media::COLOR_SPACE_JPEG) {
 229           color_space = YUVVideoDrawQuad::JPEG;
 230         } else if (videoframe_color_space == media::COLOR_SPACE_HD_REC709) {
 231           color_space = YUVVideoDrawQuad::REC_709;
 232         }
 233       }
 234
 235       const gfx::Size ya_tex_size = coded_size;
 236       gfx::Size uv_tex_size;
 237
 238       if (frame_->HasTextures()) {
 239         DCHECK_EQ(media::PIXEL_FORMAT_I420, frame_->format());
 240         DCHECK_EQ(3u, frame_resources_.size());  // Alpha is not supported yet.
 241         DCHECK(visible_rect.origin().IsOrigin());
 242         DCHECK(visible_rect.size() == coded_size);
 243         uv_tex_size.SetSize((ya_tex_size.width() + 1) / 2,
 244                             (ya_tex_size.height() + 1) / 2);
 245       } else {
 246         uv_tex_size = media::VideoFrame::PlaneSize(
 247             frame_->format(), media::VideoFrame::kUPlane, coded_size);
 248         DCHECK(uv_tex_size ==
 249                media::VideoFrame::PlaneSize(
 250                    frame_->format(), media::VideoFrame::kVPlane, coded_size));
 251         DCHECK_IMPLIES(
 252             frame_resources_.size() > 3,
 253             ya_tex_size ==
 254                 media::VideoFrame::PlaneSize(
 255                     frame_->format(), media::VideoFrame::kAPlane, coded_size));
 256       }
 257
 258       // Compute the UV sub-sampling factor based on the ratio between
 259       // |ya_tex_size| and |uv_tex_size|.
 260       float uv_subsampling_factor_x =
 261           static_cast<float>(ya_tex_size.width()) / uv_tex_size.width();
 262       float uv_subsampling_factor_y =
 263           static_cast<float>(ya_tex_size.height()) / uv_tex_size.height();
 264       gfx::RectF ya_tex_coord_rect(visible_rect);
 265       gfx::RectF uv_tex_coord_rect(
 266           visible_rect.x() / uv_subsampling_factor_x,
 267           visible_rect.y() / uv_subsampling_factor_y,
 268           visible_rect.width() / uv_subsampling_factor_x,
 269           visible_rect.height() / uv_subsampling_factor_y);
 270
 271       YUVVideoDrawQuad* yuv_video_quad =
 272           render_pass->CreateAndAppendDrawQuad<YUVVideoDrawQuad>();
 273       yuv_video_quad->SetNew(
 274           shared_quad_state, quad_rect, opaque_rect, visible_quad_rect,
 275           ya_tex_coord_rect, uv_tex_coord_rect, ya_tex_size, uv_tex_size,
 276           frame_resources_[0].id, frame_resources_[1].id,
 277           frame_resources_[2].id,
 278           frame_resources_.size() > 3 ? frame_resources_[3].id : 0,
 279           color_space);
 280       ValidateQuadResources(yuv_video_quad);
 281       break;
 282     }
 283     case VideoFrameExternalResources::RGBA_RESOURCE:
 284     case VideoFrameExternalResources::RGB_RESOURCE: {
 285       DCHECK_EQ(frame_resources_.size(), 1u);
 286       if (frame_resources_.size() < 1u)
 287         break;
 288       bool premultiplied_alpha =
 289           (frame_resource_type_ == VideoFrameExternalResources::RGBA_RESOURCE);
 290       gfx::PointF uv_top_left(0.f, 0.f);
 291       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
 292       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
 293       bool flipped = false;
 294       bool nearest_neighbor = false;
 295       TextureDrawQuad* texture_quad =
 296           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
 297       texture_quad->SetNew(shared_quad_state, quad_rect, opaque_rect,
 298                            visible_quad_rect, frame_resources_[0].id,
 299                            premultiplied_alpha, uv_top_left, uv_bottom_right,
 300                            SK_ColorTRANSPARENT, opacity, flipped,
 301                            nearest_neighbor);
 302       ValidateQuadResources(texture_quad);
 303       break;
 304     }
 305     case VideoFrameExternalResources::STREAM_TEXTURE_RESOURCE: {
 306       DCHECK_EQ(frame_resources_.size(), 1u);
 307       if (frame_resources_.size() < 1u)
 308         break;
 309       gfx::Transform scale;
 310       scale.Scale(tex_width_scale, tex_height_scale);
 311       StreamVideoDrawQuad* stream_video_quad =
 312           render_pass->CreateAndAppendDrawQuad<StreamVideoDrawQuad>();
 313       stream_video_quad->SetNew(
 314           shared_quad_state, quad_rect, opaque_rect, visible_quad_rect,
 315           frame_resources_[0].id, frame_resources_[0].size_in_pixels,
 316           frame_resources_[0].allow_overlay,
 317           scale * provider_client_impl_->StreamTextureMatrix());
 318       ValidateQuadResources(stream_video_quad);
 319       break;
 320     }
 321     case VideoFrameExternalResources::IO_SURFACE: {
 322       DCHECK_EQ(frame_resources_.size(), 1u);
 323       if (frame_resources_.size() < 1u)
 324         break;
 325       IOSurfaceDrawQuad* io_surface_quad =
 326           render_pass->CreateAndAppendDrawQuad<IOSurfaceDrawQuad>();
 327       io_surface_quad->SetNew(shared_quad_state, quad_rect, opaque_rect,
 328                               visible_quad_rect, visible_rect.size(),
 329                               frame_resources_[0].id,
 330                               IOSurfaceDrawQuad::UNFLIPPED,
 331                               frame_resources_[0].allow_overlay);
 332       ValidateQuadResources(io_surface_quad);
 333       break;
 334     }
 335 #if defined(VIDEO_HOLE)
 336     // This block and other blocks wrapped around #if defined(VIDEO_HOLE) is not
 337     // maintained by the general compositor team. Please contact the following
 338     // people instead:
 339     //
 340     // wonsik@chromium.org
 341     // lcwu@chromium.org
 342     case VideoFrameExternalResources::HOLE: {
 343       DCHECK_EQ(frame_resources_.size(), 0u);
 344       SolidColorDrawQuad* solid_color_draw_quad =
 345           render_pass->CreateAndAppendDrawQuad<SolidColorDrawQuad>();
 346
 347       // Create a solid color quad with transparent black and force no
 348       // blending / no anti-aliasing.
 349       gfx::Rect opaque_rect = quad_rect;
 350       solid_color_draw_quad->SetAll(shared_quad_state,
 351                                     quad_rect,
 352                                     opaque_rect,
 353                                     visible_quad_rect,
 354                                     false,
 355                                     SK_ColorTRANSPARENT,
 356                                     true);
 357       break;
 358     }
 359 #endif  // defined(VIDEO_HOLE)
 360     case VideoFrameExternalResources::NONE:
 361       NOTIMPLEMENTED();
 362       break;
 363   }
 364 }
 365
 366 void VideoLayerImpl::DidDraw(ResourceProvider* resource_provider) {
 367   LayerImpl::DidDraw(resource_provider);
 368
 369   DCHECK(frame_.get());
 370
 371   if (frame_resource_type_ ==
 372       VideoFrameExternalResources::SOFTWARE_RESOURCE) {
 373     for (size_t i = 0; i < software_resources_.size(); ++i) {
 374       software_release_callback_.Run(
 375           0, false, layer_tree_impl()->BlockingMainThreadTaskRunner());
 376     }
 377
 378     software_resources_.clear();
 379     software_release_callback_.Reset();
 380   } else {
 381     for (size_t i = 0; i < frame_resources_.size(); ++i)
 382       resource_provider->DeleteResource(frame_resources_[i].id);
 383     frame_resources_.clear();
 384   }
 385
 386   provider_client_impl_->PutCurrentFrame();
 387   frame_ = nullptr;
 388
 389   provider_client_impl_->ReleaseLock();
 390 }
 391
 392 SimpleEnclosedRegion VideoLayerImpl::VisibleOpaqueRegion() const {
 393   // If we don't have a frame yet, then we don't have an opaque region.
 394   if (!provider_client_impl_->HasCurrentFrame())
 395     return SimpleEnclosedRegion();
 396   return LayerImpl::VisibleOpaqueRegion();
 397 }
 398
 399 void VideoLayerImpl::ReleaseResources() {
 400   updater_ = nullptr;
 401 }
 402
 403 void VideoLayerImpl::SetNeedsRedraw() {
 404   SetUpdateRect(gfx::UnionRects(update_rect(), gfx::Rect(bounds())));
 405   layer_tree_impl()->SetNeedsRedraw();
 406 }
 407
 408 const char* VideoLayerImpl::LayerTypeAsString() const {
 409   return "cc::VideoLayerImpl";
 410 }
 411
 412 }  // namespace cc