57 lines
1.7 KiB
C++
57 lines
1.7 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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// This file implements a class that can be used for scaling frames.
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#ifndef WEBRTC_MODULES_UTILITY_SOURCE_FRAME_SCALER_H_
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#define WEBRTC_MODULES_UTILITY_SOURCE_FRAME_SCALER_H_
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#ifdef WEBRTC_MODULE_UTILITY_VIDEO
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#include "engine_configurations.h"
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#include "module_common_types.h"
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#include "typedefs.h"
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namespace webrtc
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{
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// TODO (perkj): add interpolator. Current implementation only support scaling
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// (up or down) where the width and height are scaled by a constant factor 2-4.
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// Also remove NO_INTERPOLATOR.
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// Disable usage of the old intertpolator implementation.
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#define NO_INTERPOLATOR 1
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class VideoFrame;
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class FrameScaler
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{
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public:
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FrameScaler();
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~FrameScaler();
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// Re-size videoFrame so that it has the width outWidth and height
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// outHeight.
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WebRtc_Word32 ResizeFrameIfNeeded(VideoFrame& videoFrame,
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WebRtc_UWord32 outWidth,
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WebRtc_UWord32 outHeight);
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private:
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typedef WebRtc_Word8* VideoInterpolator;
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VideoInterpolator*_ptrVideoInterpolator;
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VideoFrame _interpolatorBuffer;
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WebRtc_UWord32 _outWidth;
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WebRtc_UWord32 _outHeight;
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WebRtc_UWord32 _inWidth;
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WebRtc_UWord32 _inHeight;
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};
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#endif // WEBRTC_MODULE_UTILITY_VIDEO
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} // namespace webrtc
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#endif // WEBRTC_MODULES_UTILITY_SOURCE_FRAME_SCALER_H_
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