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/*
* libjingle
* Copyright 2014 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/media/base/videoframefactory.h"
#include <algorithm>
#include "talk/media/base/videocapturer.h"
namespace cricket {
VideoFrame* VideoFrameFactory::CreateAliasedFrame(
const CapturedFrame* input_frame,
int cropped_input_width,
int cropped_input_height,
int output_width,
int output_height) const {
rtc::scoped_ptr<VideoFrame> cropped_input_frame(CreateAliasedFrame(
input_frame, cropped_input_width, cropped_input_height));
if (!cropped_input_frame)
return nullptr;
if (cropped_input_width == output_width &&
cropped_input_height == output_height) {
// No scaling needed.
return cropped_input_frame.release();
}
// If the frame is rotated, we need to switch the width and height.
if (apply_rotation_ &&
(input_frame->GetRotation() == webrtc::kVideoRotation_90 ||
input_frame->GetRotation() == webrtc::kVideoRotation_270)) {
std::swap(output_width, output_height);
}
// Create and stretch the output frame if it has not been created yet, is
// still in use by others, or its size is not same as the expected.
if (!output_frame_ || !output_frame_->IsExclusive() ||
output_frame_->GetWidth() != static_cast<size_t>(output_width) ||
output_frame_->GetHeight() != static_cast<size_t>(output_height)) {
output_frame_.reset(
cropped_input_frame->Stretch(output_width, output_height, true, true));
if (!output_frame_) {
LOG(LS_WARNING) << "Failed to stretch frame to " << output_width << "x"
<< output_height;
return NULL;
}
} else {
cropped_input_frame->StretchToFrame(output_frame_.get(), true, true);
output_frame_->SetTimeStamp(cropped_input_frame->GetTimeStamp());
}
return output_frame_->Copy();
}
} // namespace cricket
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