57 lines
1.7 KiB
C
57 lines
1.7 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
// This file implements a class that can be used for scaling frames.
|
||
|
|
#ifndef WEBRTC_MODULES_UTILITY_SOURCE_FRAME_SCALER_H_
|
||
|
|
#define WEBRTC_MODULES_UTILITY_SOURCE_FRAME_SCALER_H_
|
||
|
|
|
||
|
|
#ifdef WEBRTC_MODULE_UTILITY_VIDEO
|
||
|
|
|
||
|
|
#include "engine_configurations.h"
|
||
|
|
#include "module_common_types.h"
|
||
|
|
#include "typedefs.h"
|
||
|
|
|
||
|
|
namespace webrtc
|
||
|
|
{
|
||
|
|
// TODO (perkj): add interpolator. Current implementation only support scaling
|
||
|
|
// (up or down) where the width and height are scaled by a constant factor 2-4.
|
||
|
|
// Also remove NO_INTERPOLATOR.
|
||
|
|
|
||
|
|
// Disable usage of the old intertpolator implementation.
|
||
|
|
#define NO_INTERPOLATOR 1
|
||
|
|
|
||
|
|
|
||
|
|
class VideoFrame;
|
||
|
|
class FrameScaler
|
||
|
|
{
|
||
|
|
public:
|
||
|
|
FrameScaler();
|
||
|
|
~FrameScaler();
|
||
|
|
|
||
|
|
// Re-size videoFrame so that it has the width outWidth and height
|
||
|
|
// outHeight.
|
||
|
|
WebRtc_Word32 ResizeFrameIfNeeded(VideoFrame& videoFrame,
|
||
|
|
WebRtc_UWord32 outWidth,
|
||
|
|
WebRtc_UWord32 outHeight);
|
||
|
|
private:
|
||
|
|
typedef WebRtc_Word8* VideoInterpolator;
|
||
|
|
VideoInterpolator*_ptrVideoInterpolator;
|
||
|
|
|
||
|
|
VideoFrame _interpolatorBuffer;
|
||
|
|
WebRtc_UWord32 _outWidth;
|
||
|
|
WebRtc_UWord32 _outHeight;
|
||
|
|
WebRtc_UWord32 _inWidth;
|
||
|
|
WebRtc_UWord32 _inHeight;
|
||
|
|
|
||
|
|
};
|
||
|
|
#endif // WEBRTC_MODULE_UTILITY_VIDEO
|
||
|
|
} // namespace webrtc
|
||
|
|
#endif // WEBRTC_MODULES_UTILITY_SOURCE_FRAME_SCALER_H_
|