blob: 97575813f489a415f91200917efa0f14dd47d7a6 [file] [log] [blame]
// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/surfaces/surface.h"
#include <algorithm>
#include "cc/output/compositor_frame.h"
#include "cc/output/copy_output_request.h"
#include "cc/surfaces/surface_factory.h"
#include "cc/surfaces/surface_id_allocator.h"
#include "cc/surfaces/surface_manager.h"
namespace cc {
// The frame index starts at 2 so that empty frames will be treated as
// completely damaged the first time they're drawn from.
static const int kFrameIndexStart = 2;
Surface::Surface(SurfaceId id, SurfaceFactory* factory)
: surface_id_(id),
factory_(factory->AsWeakPtr()),
frame_index_(kFrameIndexStart) {
}
Surface::~Surface() {
ClearCopyRequests();
if (current_frame_ && factory_) {
ReturnedResourceArray current_resources;
TransferableResource::ReturnResources(
current_frame_->delegated_frame_data->resource_list,
&current_resources);
factory_->UnrefResources(current_resources);
}
if (!draw_callback_.is_null())
draw_callback_.Run(SurfaceDrawStatus::DRAW_SKIPPED);
}
void Surface::QueueFrame(scoped_ptr<CompositorFrame> frame,
const DrawCallback& callback) {
DCHECK(factory_);
ClearCopyRequests();
if (frame) {
TakeLatencyInfo(&frame->metadata.latency_info);
}
scoped_ptr<CompositorFrame> previous_frame = current_frame_.Pass();
current_frame_ = frame.Pass();
if (current_frame_) {
factory_->ReceiveFromChild(
current_frame_->delegated_frame_data->resource_list);
}
// Empty frames shouldn't be drawn and shouldn't contribute damage, so don't
// increment frame index for them.
if (current_frame_ &&
!current_frame_->delegated_frame_data->render_pass_list.empty())
++frame_index_;
if (previous_frame) {
ReturnedResourceArray previous_resources;
TransferableResource::ReturnResources(
previous_frame->delegated_frame_data->resource_list,
&previous_resources);
factory_->UnrefResources(previous_resources);
}
if (!draw_callback_.is_null())
draw_callback_.Run(SurfaceDrawStatus::DRAW_SKIPPED);
draw_callback_ = callback;
if (current_frame_) {
factory_->manager()->DidSatisfySequences(
SurfaceIdAllocator::NamespaceForId(surface_id_),
&current_frame_->metadata.satisfies_sequences);
}
}
void Surface::RequestCopyOfOutput(scoped_ptr<CopyOutputRequest> copy_request) {
if (current_frame_ &&
!current_frame_->delegated_frame_data->render_pass_list.empty())
current_frame_->delegated_frame_data->render_pass_list.back()
->copy_requests.push_back(copy_request.Pass());
else
copy_request->SendEmptyResult();
}
void Surface::TakeCopyOutputRequests(
std::multimap<RenderPassId, CopyOutputRequest*>* copy_requests) {
DCHECK(copy_requests->empty());
if (current_frame_) {
for (const auto& render_pass :
current_frame_->delegated_frame_data->render_pass_list) {
while (!render_pass->copy_requests.empty()) {
scoped_ptr<CopyOutputRequest> request =
render_pass->copy_requests.take_back();
render_pass->copy_requests.pop_back();
copy_requests->insert(
std::make_pair(render_pass->id, request.release()));
}
}
}
}
const CompositorFrame* Surface::GetEligibleFrame() {
return current_frame_.get();
}
void Surface::TakeLatencyInfo(std::vector<ui::LatencyInfo>* latency_info) {
if (!current_frame_)
return;
if (latency_info->empty()) {
current_frame_->metadata.latency_info.swap(*latency_info);
return;
}
std::copy(current_frame_->metadata.latency_info.begin(),
current_frame_->metadata.latency_info.end(),
std::back_inserter(*latency_info));
current_frame_->metadata.latency_info.clear();
}
void Surface::RunDrawCallbacks(SurfaceDrawStatus drawn) {
if (!draw_callback_.is_null()) {
DrawCallback callback = draw_callback_;
draw_callback_ = DrawCallback();
callback.Run(drawn);
}
}
void Surface::AddDestructionDependency(SurfaceSequence sequence) {
destruction_dependencies_.push_back(sequence);
}
void Surface::SatisfyDestructionDependencies(
base::hash_set<SurfaceSequence>* sequences) {
destruction_dependencies_.erase(
std::remove_if(
destruction_dependencies_.begin(), destruction_dependencies_.end(),
[sequences](SurfaceSequence seq) { return !!sequences->erase(seq); }),
destruction_dependencies_.end());
}
void Surface::ClearCopyRequests() {
if (current_frame_) {
for (const auto& render_pass :
current_frame_->delegated_frame_data->render_pass_list) {
for (const auto& copy_request : render_pass->copy_requests)
copy_request->SendEmptyResult();
}
}
}
} // namespace cc