blob: 11be6dc0eae679c7800a71911b722ed4798f1fb1 [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 "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "remoting/client/chromoting_stats.h"
#include "remoting/client/frame_consumer_proxy.h"
#include "remoting/client/frame_producer.h"
#include "remoting/client/video_renderer.h"
#include "remoting/protocol/video_stub.h"
#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
namespace base {
class SingleThreadTaskRunner;
} // namespace base
namespace remoting {
class ChromotingStats;
// Implementation of VideoRenderer interface that decodes frame on CPU (on a
// decode thread) and then passes decoded frames to a FrameConsumer.
// FrameProducer methods can be called on any thread. All other methods must be
// called on the main thread. Owned must ensure that this class outlives
// FrameConsumer (which calls FrameProducer interface).
class SoftwareVideoRenderer : public VideoRenderer,
public protocol::VideoStub,
public FrameProducer,
public base::NonThreadSafe {
// Creates an update decoder on |main_task_runner_| and |decode_task_runner_|,
// outputting to |consumer|. The |main_task_runner_| is responsible for
// receiving and queueing packets. The |decode_task_runner_| is responsible
// for decoding the video packets.
// TODO(wez): Replace the ref-counted proxy with an owned FrameConsumer.
scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
scoped_refptr<base::SingleThreadTaskRunner> decode_task_runner,
scoped_refptr<FrameConsumerProxy> consumer);
~SoftwareVideoRenderer() override;
// VideoRenderer interface.
void OnSessionConfig(const protocol::SessionConfig& config) override;
ChromotingStats* GetStats() override;
protocol::VideoStub* GetVideoStub() override;
// protocol::VideoStub interface.
void ProcessVideoPacket(scoped_ptr<VideoPacket> packet,
const base::Closure& done) override;
// FrameProducer implementation. These methods may be called before we are
// Initialize()d, or we know the source screen size. These methods may be
// called on any thread.
// TODO(sergeyu): On Android a separate display thread is used for drawing.
// FrameConsumer calls FrameProducer on that thread. Can we avoid having a
// separate display thread? E.g. can we do everything on the decode thread?
void DrawBuffer(webrtc::DesktopFrame* buffer) override;
void InvalidateRegion(const webrtc::DesktopRegion& region) override;
void RequestReturnBuffers(const base::Closure& done) override;
void SetOutputSizeAndClip(const webrtc::DesktopSize& view_size,
const webrtc::DesktopRect& clip_area) override;
class Core;
// Callback method when a VideoPacket is processed. |decode_start| contains
// the timestamp when the packet will start to be processed.
void OnPacketDone(base::Time decode_start, const base::Closure& done);
scoped_refptr<base::SingleThreadTaskRunner> decode_task_runner_;
scoped_ptr<Core> core_;
ChromotingStats stats_;
// Keep track of the latest event timestamp bounced back from the host.
int64 latest_event_timestamp_;
base::WeakPtrFactory<SoftwareVideoRenderer> weak_factory_;
} // namespace remoting