rhubarb-lip-sync/rhubarb/lib/webrtc-8d2248ff/webrtc/media/base/videoframefactory.h

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2016-06-21 20:13:05 +00:00
/*
* Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef WEBRTC_MEDIA_BASE_VIDEOFRAMEFACTORY_H_
#define WEBRTC_MEDIA_BASE_VIDEOFRAMEFACTORY_H_
#include <memory>
#include "webrtc/common_video/include/i420_buffer_pool.h"
#include "webrtc/media/base/videoframe.h"
namespace cricket {
struct CapturedFrame;
class VideoFrame;
// Creates cricket::VideoFrames, or a subclass of cricket::VideoFrame
// depending on the subclass of VideoFrameFactory.
class VideoFrameFactory {
public:
VideoFrameFactory() : apply_rotation_(false) {}
virtual ~VideoFrameFactory() {}
// The returned frame aliases the aliased_frame if the input color
// space allows for aliasing, otherwise a color conversion will
// occur. Returns NULL if conversion fails.
// The returned frame will be a center crop of |input_frame| with
// size |cropped_width| x |cropped_height|.
virtual VideoFrame* CreateAliasedFrame(const CapturedFrame* input_frame,
int cropped_width,
int cropped_height) const = 0;
// The returned frame will be a center crop of |input_frame| with size
// |cropped_width| x |cropped_height|, scaled to |output_width| x
// |output_height|.
virtual VideoFrame* CreateAliasedFrame(const CapturedFrame* input_frame,
int cropped_input_width,
int cropped_input_height,
int output_width,
int output_height) const;
void SetApplyRotation(bool enable) { apply_rotation_ = enable; }
protected:
bool apply_rotation_;
private:
// An internal pool to avoid reallocations. It is mutable because it
// does not affect behaviour, only performance.
mutable webrtc::I420BufferPool pool_;
};
} // namespace cricket
#endif // WEBRTC_MEDIA_BASE_VIDEOFRAMEFACTORY_H_