media_source_video_renderer.h revision 010d83a9304c5a91596085d917d248abff47903a
1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#ifndef REMOTING_CLIENT_PLUGIN_MEDIA_SOURCE_VIDEO_RENDERER_H_ 6#define REMOTING_CLIENT_PLUGIN_MEDIA_SOURCE_VIDEO_RENDERER_H_ 7 8#include <string> 9 10#include "base/basictypes.h" 11#include "base/callback.h" 12#include "base/memory/scoped_ptr.h" 13#include "remoting/client/chromoting_stats.h" 14#include "remoting/client/video_renderer.h" 15#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" 16#include "third_party/webrtc/modules/desktop_capture/desktop_region.h" 17 18namespace remoting { 19 20// VideoRenderer implementation that packs data into a WebM stream that can be 21// passed to <video> tag using MediaSource API. 22class MediaSourceVideoRenderer : public VideoRenderer { 23 public: 24 class Delegate { 25 public: 26 Delegate() {} 27 virtual ~Delegate() {} 28 29 // Called when stream size changes. 30 virtual void OnMediaSourceSize(const webrtc::DesktopSize& size, 31 const webrtc::DesktopVector& dpi) = 0; 32 33 // Called when desktop shape changes. 34 virtual void OnMediaSourceShape(const webrtc::DesktopRegion& shape) = 0; 35 36 // Called when the MediaSource needs to be reset (e.g. because screen size 37 // has changed). 38 virtual void OnMediaSourceReset(const std::string& format) = 0; 39 40 // Called when new data becomes available. 41 virtual void OnMediaSourceData(uint8_t* buffer, size_t buffer_size) = 0; 42 }; 43 44 explicit MediaSourceVideoRenderer(Delegate* data_forwarder); 45 virtual ~MediaSourceVideoRenderer(); 46 47 // VideoRenderer interface. 48 virtual void Initialize(const protocol::SessionConfig& config) OVERRIDE; 49 virtual ChromotingStats* GetStats() OVERRIDE; 50 virtual void ProcessVideoPacket(scoped_ptr<VideoPacket> packet, 51 const base::Closure& done) OVERRIDE; 52 53 private: 54 // Helper class used to generate WebM stream. 55 class VideoWriter; 56 57 Delegate* delegate_; 58 scoped_ptr<VideoWriter> writer_; 59 webrtc::DesktopVector frame_dpi_; 60 webrtc::DesktopRegion desktop_shape_; 61 62 ChromotingStats stats_; 63 int64 latest_sequence_number_; 64 65 DISALLOW_COPY_AND_ASSIGN(MediaSourceVideoRenderer); 66}; 67 68} // namespace remoting 69 70#endif // REMOTING_CLIENT_PLUGIN_MEDIA_SOURCE_VIDEO_RENDERER_H_ 71