| // Copyright 2019 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 "chromecast/graphics/cast_external_begin_frame_source.h" |
| |
| #include "base/time/time.h" |
| #include "chromecast/graphics/cast_window_manager_aura.h" |
| #include "chromecast/graphics/cast_window_tree_host_aura.h" |
| |
| namespace chromecast { |
| namespace { |
| constexpr base::TimeDelta kFrameInterval = |
| base::TimeDelta::FromMilliseconds(250); |
| constexpr uint64_t kSourceId = viz::BeginFrameArgs::kManualSourceId; |
| } // namespace |
| |
| CastExternalBeginFrameSource::CastExternalBeginFrameSource( |
| CastWindowManagerAura* cast_window_manager_aura) |
| : cast_window_manager_aura_(cast_window_manager_aura), |
| sequence_number_(viz::BeginFrameArgs::kStartingFrameNumber), |
| weak_factory_(this) { |
| IssueExternalBeginFrame(); |
| } |
| |
| CastExternalBeginFrameSource::~CastExternalBeginFrameSource() {} |
| |
| void CastExternalBeginFrameSource::OnFrameComplete( |
| const viz::BeginFrameAck& ack) { |
| DCHECK_EQ(kSourceId, ack.source_id); |
| timer_.Start( |
| FROM_HERE, kFrameInterval, |
| base::BindOnce(&CastExternalBeginFrameSource::IssueExternalBeginFrame, |
| base::Unretained(this))); |
| } |
| |
| void CastExternalBeginFrameSource::IssueExternalBeginFrame() { |
| const auto now = base::TimeTicks::Now(); |
| viz::BeginFrameArgs args = viz::BeginFrameArgs::Create( |
| BEGINFRAME_FROM_HERE, kSourceId, sequence_number_, now, |
| now + kFrameInterval, kFrameInterval, viz::BeginFrameArgs::NORMAL); |
| ui::Compositor* compositor = |
| cast_window_manager_aura_->window_tree_host()->compositor(); |
| compositor->context_factory_private()->IssueExternalBeginFrame( |
| compositor, args, false, |
| base::BindOnce(&CastExternalBeginFrameSource::OnFrameComplete, |
| weak_factory_.GetWeakPtr())); |
| sequence_number_++; |
| } |
| |
| } // namespace chromecast |