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_CODEC_VIDEO_ENCODER_HELPER_H_ 6 #define REMOTING_CODEC_VIDEO_ENCODER_HELPER_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" 10 11 namespace webrtc { 12 class DesktopFrame; 13 class DesktopRegion; 14 } 15 16 namespace remoting { 17 18 class VideoPacket; 19 20 class VideoEncoderHelper { 21 public: 22 VideoEncoderHelper(); 23 24 // Returns a new VideoPacket with common fields (e.g. capture_time_ms, rects 25 // list, frame shape if any) initialized based on the supplied |frame|. 26 // Screen width and height will be set iff |frame|'s size differs from that 27 // of the previously-supplied frame. 28 scoped_ptr<VideoPacket> CreateVideoPacket(const webrtc::DesktopFrame& frame); 29 30 // Returns a new VideoPacket with the common fields populated from |frame|, 31 // but the updated rects overridden by |updated_region|. This is useful for 32 // encoders which alter the updated region e.g. by expanding it to macroblock 33 // boundaries. 34 scoped_ptr<VideoPacket> CreateVideoPacketWithUpdatedRegion( 35 const webrtc::DesktopFrame& frame, 36 const webrtc::DesktopRegion& updated_region); 37 private: 38 // The most recent screen size. Used to detect screen size changes. 39 webrtc::DesktopSize screen_size_; 40 41 DISALLOW_COPY_AND_ASSIGN(VideoEncoderHelper); 42 }; 43 44 } // namespace remoting 45 46 #endif // REMOTING_CODEC_VIDEO_ENCODER_HELPER_H_ 47