9fedff7c17
Review URL: https://webrtc-codereview.appspot.com/922004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@2983 4adac7df-926f-26a2-2b94-8c16560cd09d
121 lines
2.8 KiB
C++
121 lines
2.8 KiB
C++
/*
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* Copyright (c) 2012 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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#include "spatial_resampler.h"
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namespace webrtc {
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VPMSimpleSpatialResampler::VPMSimpleSpatialResampler()
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:
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_resamplingMode(kFastRescaling),
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_targetWidth(0),
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_targetHeight(0),
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_scaler()
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{
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}
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VPMSimpleSpatialResampler::~VPMSimpleSpatialResampler()
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{
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//
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}
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WebRtc_Word32
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VPMSimpleSpatialResampler::SetTargetFrameSize(WebRtc_Word32 width,
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WebRtc_Word32 height)
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{
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if (_resamplingMode == kNoRescaling) {
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return VPM_OK;
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}
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if (width < 1 || height < 1) {
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return VPM_PARAMETER_ERROR;
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}
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_targetWidth = width;
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_targetHeight = height;
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return VPM_OK;
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}
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void
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VPMSimpleSpatialResampler::SetInputFrameResampleMode(VideoFrameResampling
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resamplingMode)
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{
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_resamplingMode = resamplingMode;
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}
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void
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VPMSimpleSpatialResampler::Reset()
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{
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_resamplingMode = kFastRescaling;
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_targetWidth = 0;
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_targetHeight = 0;
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}
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WebRtc_Word32
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VPMSimpleSpatialResampler::ResampleFrame(const I420VideoFrame& inFrame,
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I420VideoFrame* outFrame)
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{
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if (_resamplingMode == kNoRescaling)
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return outFrame->CopyFrame(inFrame);
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// Check if re-sampling is needed
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if ((inFrame.width() == _targetWidth) &&
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(inFrame.height() == _targetHeight)) {
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return outFrame->CopyFrame(inFrame);
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}
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// Setting scaler
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// TODO(mikhal/marpan): Should we allow for setting the filter mode in
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// _scale.Set() with |_resamplingMode|?
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int retVal = 0;
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retVal = _scaler.Set(inFrame.width(), inFrame.height(),
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_targetWidth, _targetHeight, kI420, kI420, kScaleBox);
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if (retVal < 0)
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return retVal;
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// Setting time parameters to the output frame - all the rest will be
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// set by the scaler.
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outFrame->set_timestamp(inFrame.timestamp());
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outFrame->set_render_time_ms(inFrame.render_time_ms());
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retVal = _scaler.Scale(inFrame, outFrame);
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if (retVal == 0)
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return VPM_OK;
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else
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return VPM_SCALE_ERROR;
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}
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WebRtc_Word32
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VPMSimpleSpatialResampler::TargetHeight()
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{
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return _targetHeight;
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}
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WebRtc_Word32
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VPMSimpleSpatialResampler::TargetWidth()
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{
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return _targetWidth;
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}
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bool
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VPMSimpleSpatialResampler::ApplyResample(WebRtc_Word32 width,
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WebRtc_Word32 height)
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{
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if ((width == _targetWidth && height == _targetHeight) ||
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_resamplingMode == kNoRescaling)
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return false;
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else
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return true;
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}
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} //namespace
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