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/*
* Copyright (c) 2012 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.
*/
#include "webrtc/modules/utility/source/frame_scaler.h"
#ifdef WEBRTC_MODULE_UTILITY_VIDEO
#include "webrtc/common_video/libyuv/include/scaler.h"
#include "webrtc/system_wrappers/interface/trace.h"
namespace webrtc {
FrameScaler::FrameScaler()
: scaler_(new Scaler()),
scaled_frame_() {}
FrameScaler::~FrameScaler() {}
int FrameScaler::ResizeFrameIfNeeded(I420VideoFrame* video_frame,
int out_width,
int out_height) {
if (video_frame->IsZeroSize()) {
return -1;
}
if ((video_frame->width() != out_width) ||
(video_frame->height() != out_height)) {
// Set correct scale settings and scale |video_frame| into |scaled_frame_|.
scaler_->Set(video_frame->width(), video_frame->height(), out_width,
out_height, kI420, kI420, kScaleBox);
int ret = scaler_->Scale(*video_frame, &scaled_frame_);
if (ret < 0) {
return ret;
}
scaled_frame_.set_render_time_ms(video_frame->render_time_ms());
scaled_frame_.set_timestamp(video_frame->timestamp());
video_frame->SwapFrame(&scaled_frame_);
}
return 0;
}
} // namespace webrtc
#endif // WEBRTC_MODULE_UTILITY_VIDEO
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