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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 "content/browser/compositor/surface_display_output_surface.h"
#include "cc/output/compositor_frame.h"
#include "cc/output/compositor_frame_ack.h"
#include "cc/surfaces/display.h"
#include "cc/surfaces/surface.h"
#include "cc/surfaces/surface_manager.h"
#include "content/browser/compositor/onscreen_display_client.h"
namespace content {
SurfaceDisplayOutputSurface::SurfaceDisplayOutputSurface(
cc::SurfaceManager* surface_manager,
cc::SurfaceIdAllocator* allocator,
const scoped_refptr<cc::ContextProvider>& context_provider)
: cc::OutputSurface(context_provider,
scoped_ptr<cc::SoftwareOutputDevice>()),
display_client_(NULL),
surface_manager_(surface_manager),
factory_(surface_manager, this),
allocator_(allocator) {
capabilities_.delegated_rendering = true;
capabilities_.max_frames_pending = 1;
capabilities_.can_force_reclaim_resources = true;
}
SurfaceDisplayOutputSurface::~SurfaceDisplayOutputSurface() {
client_ = NULL;
if (!surface_id_.is_null()) {
factory_.Destroy(surface_id_);
}
}
void SurfaceDisplayOutputSurface::ReceivedVSyncParameters(
base::TimeTicks timebase,
base::TimeDelta interval) {
CommitVSyncParameters(timebase, interval);
}
void SurfaceDisplayOutputSurface::SwapBuffers(cc::CompositorFrame* frame) {
gfx::Size frame_size =
frame->delegated_frame_data->render_pass_list.back()->output_rect.size();
if (frame_size != display_size_) {
if (!surface_id_.is_null()) {
factory_.Destroy(surface_id_);
}
surface_id_ = allocator_->GenerateId();
factory_.Create(surface_id_);
display_size_ = frame_size;
}
display_client_->display()->SetSurfaceId(surface_id_,
frame->metadata.device_scale_factor);
scoped_ptr<cc::CompositorFrame> frame_copy(new cc::CompositorFrame());
frame->AssignTo(frame_copy.get());
factory_.SubmitFrame(
surface_id_,
frame_copy.Pass(),
base::Bind(&SurfaceDisplayOutputSurface::SwapBuffersComplete,
base::Unretained(this)));
client_->DidSwapBuffers();
}
bool SurfaceDisplayOutputSurface::BindToClient(
cc::OutputSurfaceClient* client) {
DCHECK(client);
DCHECK(display_client_);
client_ = client;
// Avoid initializing GL context here, as this should be sharing the
// Display's context.
return display_client_->Initialize();
}
void SurfaceDisplayOutputSurface::ForceReclaimResources() {
if (!surface_id_.is_null()) {
scoped_ptr<cc::CompositorFrame> empty_frame(new cc::CompositorFrame());
empty_frame->delegated_frame_data.reset(new cc::DelegatedFrameData);
factory_.SubmitFrame(surface_id_, empty_frame.Pass(),
cc::SurfaceFactory::DrawCallback());
}
}
void SurfaceDisplayOutputSurface::ReturnResources(
const cc::ReturnedResourceArray& resources) {
cc::CompositorFrameAck ack;
ack.resources = resources;
if (client_)
client_->ReclaimResources(&ack);
}
void SurfaceDisplayOutputSurface::SwapBuffersComplete(bool drawn) {
if (client_)
client_->DidSwapBuffersComplete();
}
} // namespace content
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