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// 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 <stddef.h>
#include <stdint.h>
#include <algorithm>
#include "cc/base/container_util.h"
#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),
previous_frame_surface_id_(id),
factory_(factory->AsWeakPtr()),
frame_index_(kFrameIndexStart),
destroyed_(false) {}
Surface::~Surface() {
ClearCopyRequests();
if (current_frame_ && factory_) {
UnrefFrameResources(current_frame_->delegated_frame_data.get());
}
if (!draw_callback_.is_null())
draw_callback_.Run(SurfaceDrawStatus::DRAW_SKIPPED);
}
void Surface::SetPreviousFrameSurface(Surface* surface) {
DCHECK(surface);
frame_index_ = surface->frame_index() + 1;
previous_frame_surface_id_ = surface->surface_id();
}
void Surface::SetGpuMemoryBufferClientId(int gpu_memory_buffer_client_id) {
// This should only be set once.
DCHECK_EQ(-1, gpu_memory_buffer_client_id_);
DCHECK_NE(gpu_memory_buffer_client_id, gpu_memory_buffer_client_id_);
gpu_memory_buffer_client_id_ = gpu_memory_buffer_client_id;
}
void Surface::QueueFrame(std::unique_ptr<CompositorFrame> frame,
const DrawCallback& callback) {
DCHECK(factory_);
ClearCopyRequests();
if (frame) {
TakeLatencyInfo(&frame->metadata.latency_info);
}
std::unique_ptr<CompositorFrame> previous_frame = std::move(current_frame_);
current_frame_ = std::move(frame);
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_;
previous_frame_surface_id_ = surface_id();
std::vector<SurfaceId> new_referenced_surfaces;
if (current_frame_) {
new_referenced_surfaces = current_frame_->metadata.referenced_surfaces;
}
if (previous_frame) {
UnrefFrameResources(previous_frame->delegated_frame_data.get());
}
if (!draw_callback_.is_null())
draw_callback_.Run(SurfaceDrawStatus::DRAW_SKIPPED);
draw_callback_ = callback;
bool referenced_surfaces_changed =
(referenced_surfaces_ != new_referenced_surfaces);
referenced_surfaces_ = new_referenced_surfaces;
std::vector<uint32_t> satisfies_sequences;
if (current_frame_)
current_frame_->metadata.satisfies_sequences.swap(satisfies_sequences);
if (referenced_surfaces_changed || !satisfies_sequences.empty()) {
// Notify the manager that sequences were satisfied either if some new
// sequences were satisfied, or if the set of referenced surfaces changed
// to force a GC to happen.
factory_->manager()->DidSatisfySequences(surface_id_.id_namespace(),
&satisfies_sequences);
}
}
void Surface::RequestCopyOfOutput(
std::unique_ptr<CopyOutputRequest> copy_request) {
if (current_frame_ &&
!current_frame_->delegated_frame_data->render_pass_list.empty()) {
std::vector<std::unique_ptr<CopyOutputRequest>>& copy_requests =
current_frame_->delegated_frame_data->render_pass_list.back()
->copy_requests;
if (void* source = copy_request->source()) {
// Remove existing CopyOutputRequests made on the Surface by the same
// source.
auto to_remove =
std::remove_if(copy_requests.begin(), copy_requests.end(),
[source](const std::unique_ptr<CopyOutputRequest>& x) {
return x->source() == source;
});
copy_requests.erase(to_remove, copy_requests.end());
}
copy_requests.push_back(std::move(copy_request));
} else {
copy_request->SendEmptyResult();
}
}
void Surface::TakeCopyOutputRequests(
std::multimap<RenderPassId, std::unique_ptr<CopyOutputRequest>>*
copy_requests) {
DCHECK(copy_requests->empty());
if (current_frame_) {
for (const auto& render_pass :
current_frame_->delegated_frame_data->render_pass_list) {
for (auto& request : render_pass->copy_requests) {
copy_requests->insert(
std::make_pair(render_pass->id, std::move(request)));
}
render_pass->copy_requests.clear();
}
}
}
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(
std::unordered_set<SurfaceSequence, SurfaceSequenceHash>* sequences,
std::unordered_set<uint32_t>* valid_id_namespaces) {
destruction_dependencies_.erase(
std::remove_if(destruction_dependencies_.begin(),
destruction_dependencies_.end(),
[sequences, valid_id_namespaces](SurfaceSequence seq) {
return (!!sequences->erase(seq) ||
!valid_id_namespaces->count(seq.id_namespace));
}),
destruction_dependencies_.end());
}
void Surface::UnrefFrameResources(DelegatedFrameData* frame_data) {
ReturnedResourceArray resources;
TransferableResource::ReturnResources(frame_data->resource_list, &resources);
// No point in returning same sync token to sender.
for (auto& resource : resources)
resource.sync_token.Clear();
factory_->UnrefResources(resources);
}
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