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| 1 // Copyright 2014 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/surfaces/surface.h" | |
| 6 | |
| 7 #include <algorithm> | |
| 8 | |
| 9 #include "cc/output/compositor_frame.h" | |
| 10 #include "cc/output/copy_output_request.h" | |
| 11 #include "cc/surfaces/surface_factory.h" | |
| 12 #include "cc/surfaces/surface_id_allocator.h" | |
| 13 #include "cc/surfaces/surface_manager.h" | |
| 14 | |
| 15 namespace cc { | |
| 16 | |
| 17 // The frame index starts at 2 so that empty frames will be treated as | |
| 18 // completely damaged the first time they're drawn from. | |
| 19 static const int kFrameIndexStart = 2; | |
| 20 | |
| 21 Surface::Surface(SurfaceId id, SurfaceFactory* factory) | |
| 22 : surface_id_(id), | |
| 23 factory_(factory->AsWeakPtr()), | |
| 24 frame_index_(kFrameIndexStart) { | |
| 25 } | |
| 26 | |
| 27 Surface::~Surface() { | |
| 28 ClearCopyRequests(); | |
| 29 if (current_frame_ && factory_) { | |
| 30 ReturnedResourceArray current_resources; | |
| 31 TransferableResource::ReturnResources( | |
| 32 current_frame_->delegated_frame_data->resource_list, | |
| 33 ¤t_resources); | |
| 34 factory_->UnrefResources(current_resources); | |
| 35 } | |
| 36 if (!draw_callback_.is_null()) | |
| 37 draw_callback_.Run(SurfaceDrawStatus::DRAW_SKIPPED); | |
| 38 } | |
| 39 | |
| 40 void Surface::QueueFrame(scoped_ptr<CompositorFrame> frame, | |
| 41 const DrawCallback& callback) { | |
| 42 DCHECK(factory_); | |
| 43 ClearCopyRequests(); | |
| 44 TakeLatencyInfo(&frame->metadata.latency_info); | |
| 45 scoped_ptr<CompositorFrame> previous_frame = current_frame_.Pass(); | |
| 46 current_frame_ = frame.Pass(); | |
| 47 factory_->ReceiveFromChild( | |
| 48 current_frame_->delegated_frame_data->resource_list); | |
| 49 // Empty frames shouldn't be drawn and shouldn't contribute damage, so don't | |
| 50 // increment frame index for them. | |
| 51 if (!current_frame_ || | |
| 52 !current_frame_->delegated_frame_data->render_pass_list.empty()) | |
| 53 ++frame_index_; | |
| 54 | |
| 55 if (previous_frame) { | |
| 56 ReturnedResourceArray previous_resources; | |
| 57 TransferableResource::ReturnResources( | |
| 58 previous_frame->delegated_frame_data->resource_list, | |
| 59 &previous_resources); | |
| 60 factory_->UnrefResources(previous_resources); | |
| 61 } | |
| 62 if (!draw_callback_.is_null()) | |
| 63 draw_callback_.Run(SurfaceDrawStatus::DRAW_SKIPPED); | |
| 64 draw_callback_ = callback; | |
| 65 factory_->manager()->DidSatisfySequences( | |
| 66 SurfaceIdAllocator::NamespaceForId(surface_id_), | |
| 67 ¤t_frame_->metadata.satisfies_sequences); | |
| 68 } | |
| 69 | |
| 70 void Surface::RequestCopyOfOutput(scoped_ptr<CopyOutputRequest> copy_request) { | |
| 71 if (current_frame_ && | |
| 72 !current_frame_->delegated_frame_data->render_pass_list.empty()) | |
| 73 current_frame_->delegated_frame_data->render_pass_list.back() | |
| 74 ->copy_requests.push_back(copy_request.Pass()); | |
| 75 else | |
| 76 copy_request->SendEmptyResult(); | |
| 77 } | |
| 78 | |
| 79 void Surface::TakeCopyOutputRequests( | |
| 80 std::multimap<RenderPassId, CopyOutputRequest*>* copy_requests) { | |
| 81 DCHECK(copy_requests->empty()); | |
| 82 if (current_frame_) { | |
| 83 for (const auto& render_pass : | |
| 84 current_frame_->delegated_frame_data->render_pass_list) { | |
| 85 while (!render_pass->copy_requests.empty()) { | |
| 86 scoped_ptr<CopyOutputRequest> request = | |
| 87 render_pass->copy_requests.take_back(); | |
| 88 render_pass->copy_requests.pop_back(); | |
| 89 copy_requests->insert( | |
| 90 std::make_pair(render_pass->id, request.release())); | |
| 91 } | |
| 92 } | |
| 93 } | |
| 94 } | |
| 95 | |
| 96 const CompositorFrame* Surface::GetEligibleFrame() { | |
| 97 return current_frame_.get(); | |
| 98 } | |
| 99 | |
| 100 void Surface::TakeLatencyInfo(std::vector<ui::LatencyInfo>* latency_info) { | |
| 101 if (!current_frame_) | |
| 102 return; | |
| 103 if (latency_info->empty()) { | |
| 104 current_frame_->metadata.latency_info.swap(*latency_info); | |
| 105 return; | |
| 106 } | |
| 107 std::copy(current_frame_->metadata.latency_info.begin(), | |
| 108 current_frame_->metadata.latency_info.end(), | |
| 109 std::back_inserter(*latency_info)); | |
| 110 current_frame_->metadata.latency_info.clear(); | |
| 111 } | |
| 112 | |
| 113 void Surface::RunDrawCallbacks(SurfaceDrawStatus drawn) { | |
| 114 if (!draw_callback_.is_null()) { | |
| 115 DrawCallback callback = draw_callback_; | |
| 116 draw_callback_ = DrawCallback(); | |
| 117 callback.Run(drawn); | |
| 118 } | |
| 119 } | |
| 120 | |
| 121 void Surface::AddDestructionDependency(SurfaceSequence sequence) { | |
| 122 destruction_dependencies_.push_back(sequence); | |
| 123 } | |
| 124 | |
| 125 void Surface::SatisfyDestructionDependencies( | |
| 126 base::hash_set<SurfaceSequence>* sequences) { | |
| 127 destruction_dependencies_.erase( | |
| 128 std::remove_if( | |
| 129 destruction_dependencies_.begin(), destruction_dependencies_.end(), | |
| 130 [sequences](SurfaceSequence seq) { return !!sequences->erase(seq); }), | |
| 131 destruction_dependencies_.end()); | |
| 132 } | |
| 133 | |
| 134 void Surface::ClearCopyRequests() { | |
| 135 if (current_frame_) { | |
| 136 for (const auto& render_pass : | |
| 137 current_frame_->delegated_frame_data->render_pass_list) { | |
| 138 for (const auto& copy_request : render_pass->copy_requests) | |
| 139 copy_request->SendEmptyResult(); | |
| 140 } | |
| 141 } | |
| 142 } | |
| 143 | |
| 144 } // namespace cc | |
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