/* * Copyright (c) 2017 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.
*/
if (!video_adapter_.AdaptFrameResolution(
frame.width(), frame.height(), frame.timestamp_us() * 1000,
&cropped_width, &cropped_height, &out_width, &out_height)) { // Drop frame in order to respect frame rate constraint. return;
}
if (out_height != frame.height() || out_width != frame.width()) { // Video adapter has requested a down-scale. Allocate a new buffer and // return scaled version. // For simplicity, only scale here without cropping.
rtc::scoped_refptr<I420Buffer> scaled_buffer =
I420Buffer::Create(out_width, out_height);
scaled_buffer->ScaleFrom(*frame.video_frame_buffer()->ToI420());
VideoFrame::Builder new_frame_builder =
VideoFrame::Builder()
.set_video_frame_buffer(scaled_buffer)
.set_rotation(kVideoRotation_0)
.set_timestamp_us(frame.timestamp_us())
.set_id(frame.id()); if (frame.has_update_rect()) {
VideoFrame::UpdateRect new_rect = frame.update_rect().ScaleWithFrame(
frame.width(), frame.height(), 0, 0, frame.width(), frame.height(),
out_width, out_height);
new_frame_builder.set_update_rect(new_rect);
}
broadcaster_.OnFrame(new_frame_builder.build());
} else { // No adaptations needed, just return the frame as is.
broadcaster_.OnFrame(frame);
}
}
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