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 #include "remoting/codec/video_encoder_helper.h" 6 7 #include "remoting/proto/video.pb.h" 8 #include "third_party/webrtc/modules/desktop_capture/desktop_frame.h" 9 #include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h" 10 #include "third_party/webrtc/modules/desktop_capture/desktop_region.h" 11 12 namespace remoting { 13 14 VideoEncoderHelper::VideoEncoderHelper() {} 15 16 scoped_ptr<VideoPacket> VideoEncoderHelper::CreateVideoPacket( 17 const webrtc::DesktopFrame& frame) { 18 return CreateVideoPacketWithUpdatedRegion(frame, frame.updated_region()); 19 } 20 21 scoped_ptr<VideoPacket> 22 VideoEncoderHelper::CreateVideoPacketWithUpdatedRegion( 23 const webrtc::DesktopFrame& frame, 24 const webrtc::DesktopRegion& updated_region) { 25 scoped_ptr<VideoPacket> packet(new VideoPacket()); 26 27 // Set |screen_width| and |screen_height| iff they have changed. 28 if (!frame.size().equals(screen_size_)) { 29 screen_size_ = frame.size(); 30 31 VideoPacketFormat* format = packet->mutable_format(); 32 format->set_screen_width(screen_size_.width()); 33 format->set_screen_height(screen_size_.height()); 34 } 35 36 // Record the list of changed rectangles. 37 for (webrtc::DesktopRegion::Iterator iter(updated_region); 38 !iter.IsAtEnd(); iter.Advance()) { 39 const webrtc::DesktopRect& rect = iter.rect(); 40 Rect* dirty_rect = packet->add_dirty_rects(); 41 dirty_rect->set_x(rect.left()); 42 dirty_rect->set_y(rect.top()); 43 dirty_rect->set_width(rect.width()); 44 dirty_rect->set_height(rect.height()); 45 } 46 47 // Record the shape of the frame, if specified. 48 if (frame.shape()) { 49 packet->set_use_desktop_shape(true); 50 for (webrtc::DesktopRegion::Iterator r(*frame.shape()); 51 !r.IsAtEnd(); r.Advance()) { 52 Rect* rect = packet->add_desktop_shape_rects(); 53 rect->set_x(r.rect().left()); 54 rect->set_y(r.rect().top()); 55 rect->set_width(r.rect().width()); 56 rect->set_height(r.rect().height()); 57 } 58 } 59 60 // Store the capture time and frame DPI. 61 packet->set_capture_time_ms(frame.capture_time_ms()); 62 if (!frame.dpi().is_zero()) { 63 packet->mutable_format()->set_x_dpi(frame.dpi().x()); 64 packet->mutable_format()->set_y_dpi(frame.dpi().y()); 65 } 66 67 return packet.Pass(); 68 } 69 70 } // namespace remoting 71
