cc/layers/video_layer.cc

   1 // Copyright 2010 The Chromium Authors
   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.h"
   6
   7 #include "cc/layers/video_layer_impl.h"
   8
   9 namespace cc {
  10
  11 scoped_refptr<VideoLayer> VideoLayer::Create(
  12     VideoFrameProvider* provider,
  13     media::VideoTransformation transform
  14 #if defined(TIZEN_VIDEO_HOLE) && BUILDFLAG(IS_TIZEN_TV)
  15     ,
  16     absl::optional<int> player_id
  17 #endif
  18 ) {
  19   return base::WrapRefCounted(new VideoLayer(provider, transform
  20 #if defined(TIZEN_VIDEO_HOLE) && BUILDFLAG(IS_TIZEN_TV)
  21                                              ,
  22                                              player_id
  23 #endif
  24                                              ));
  25 }
  26
  27 VideoLayer::VideoLayer(VideoFrameProvider* provider,
  28                        media::VideoTransformation transform
  29 #if defined(TIZEN_VIDEO_HOLE) && BUILDFLAG(IS_TIZEN_TV)
  30                        ,
  31                        absl::optional<int> player_id
  32 #endif
  33                        )
  34     : provider_(provider),
  35       transform_(transform)
  36 #if defined(TIZEN_VIDEO_HOLE) && BUILDFLAG(IS_TIZEN_TV)
  37       ,
  38       player_id_(player_id)
  39 #endif
  40 {
  41   SetMayContainVideo(true);
  42   DCHECK(provider_.Read(*this));
  43 }
  44
  45 VideoLayer::~VideoLayer() = default;
  46
  47 std::unique_ptr<LayerImpl> VideoLayer::CreateLayerImpl(
  48     LayerTreeImpl* tree_impl) const {
  49   return VideoLayerImpl::Create(tree_impl, id(), provider_.Read(*this),
  50                                 transform_
  51 #if defined(TIZEN_VIDEO_HOLE) && BUILDFLAG(IS_TIZEN_TV)
  52                                 ,
  53                                 player_id_
  54 #endif
  55   );
  56 }
  57
  58 bool VideoLayer::RequiresSetNeedsDisplayOnHdrHeadroomChange() const {
  59   // TODO(https://crbug.com/1450807): Only return true if the contents of the
  60   // video are HDR.
  61   return true;
  62 }
  63
  64 bool VideoLayer::Update() {
  65   bool updated = Layer::Update();
  66
  67   // Video layer doesn't update any resources from the main thread side,
  68   // but repaint rects need to be sent to the VideoLayerImpl via commit.
  69   //
  70   // This is the inefficient legacy redraw path for videos.  It's better to
  71   // communicate this directly to the VideoLayerImpl.
  72   updated |= !update_rect().IsEmpty();
  73
  74   return updated;
  75 }
  76
  77 void VideoLayer::StopUsingProvider() {
  78   provider_.Write(*this) = nullptr;
  79 }
  80
  81 }  // namespace cc