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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef REMOTING_CODEC_VIDEO_ENCODER_HELPER_H_
#define REMOTING_CODEC_VIDEO_ENCODER_HELPER_H_
#include <memory>
#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
namespace webrtc {
class DesktopFrame;
class DesktopRegion;
} // namespace webrtc
namespace remoting {
class VideoPacket;
class VideoEncoderHelper {
public:
VideoEncoderHelper();
VideoEncoderHelper(const VideoEncoderHelper&) = delete;
VideoEncoderHelper& operator=(const VideoEncoderHelper&) = delete;
// Returns a new VideoPacket with common fields (e.g. capture_time_ms, rects
// list, frame shape if any) initialized based on the supplied |frame|.
// Screen width and height will be set iff |frame|'s size differs from that
// of the previously-supplied frame.
std::unique_ptr<VideoPacket> CreateVideoPacket(
const webrtc::DesktopFrame& frame);
// Returns a new VideoPacket with the common fields populated from |frame|,
// but the updated rects overridden by |updated_region|. This is useful for
// encoders which alter the updated region e.g. by expanding it to macroblock
// boundaries.
std::unique_ptr<VideoPacket> CreateVideoPacketWithUpdatedRegion(
const webrtc::DesktopFrame& frame,
const webrtc::DesktopRegion& updated_region);
private:
// The most recent screen size. Used to detect screen size changes.
webrtc::DesktopSize screen_size_;
};
} // namespace remoting
#endif // REMOTING_CODEC_VIDEO_ENCODER_HELPER_H_
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