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 18 namespace remoting { 19 20 // VideoRenderer implementation that packs data into a WebM stream that can be 21 // passed to <video> tag using MediaSource API. 22 class MediaSourceVideoRenderer : public VideoRenderer { 23 public: 24 class Delegate { 25 public: Delegate()26 Delegate() {} ~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, 42 bool keyframe) = 0; 43 }; 44 45 explicit MediaSourceVideoRenderer(Delegate* delegate); 46 virtual ~MediaSourceVideoRenderer(); 47 48 // VideoRenderer interface. 49 virtual void Initialize(const protocol::SessionConfig& config) OVERRIDE; 50 virtual ChromotingStats* GetStats() OVERRIDE; 51 virtual void ProcessVideoPacket(scoped_ptr<VideoPacket> packet, 52 const base::Closure& done) OVERRIDE; 53 54 private: 55 // Helper class used to generate WebM stream. 56 class VideoWriter; 57 58 Delegate* delegate_; 59 60 std::string format_string_; 61 const char* codec_id_; 62 63 scoped_ptr<VideoWriter> writer_; 64 webrtc::DesktopVector frame_dpi_; 65 webrtc::DesktopRegion desktop_shape_; 66 67 ChromotingStats stats_; 68 int64 latest_sequence_number_; 69 70 DISALLOW_COPY_AND_ASSIGN(MediaSourceVideoRenderer); 71 }; 72 73 } // namespace remoting 74 75 #endif // REMOTING_CLIENT_PLUGIN_MEDIA_SOURCE_VIDEO_RENDERER_H_ 76