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/*
* 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.
*/
#include "test/video_capturer.h"
#include "rtc_base/basictypes.h"
#include "rtc_base/constructormagic.h"
namespace webrtc {
namespace test {
VideoCapturer::VideoCapturer() : video_adapter_(new cricket::VideoAdapter()) {}
VideoCapturer::~VideoCapturer() {}
rtc::Optional<VideoFrame> VideoCapturer::AdaptFrame(const VideoFrame& frame) {
int cropped_width = 0;
int cropped_height = 0;
int out_width = 0;
int out_height = 0;
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 rtc::Optional<VideoFrame>();
}
rtc::Optional<VideoFrame> out_frame;
if (out_height != frame.height() || out_width != frame.width()) {
// Video adapter has requested a down-scale. Allocate a new buffer and
// return scaled version.
rtc::scoped_refptr<I420Buffer> scaled_buffer =
I420Buffer::Create(out_width, out_height);
scaled_buffer->ScaleFrom(*frame.video_frame_buffer()->ToI420());
out_frame.emplace(
VideoFrame(scaled_buffer, kVideoRotation_0, frame.timestamp_us()));
} else {
// No adaptations needed, just return the frame as is.
out_frame.emplace(frame);
}
return out_frame;
}
void VideoCapturer::AddOrUpdateSink(rtc::VideoSinkInterface<VideoFrame>* sink,
const rtc::VideoSinkWants& wants) {
video_adapter_->OnResolutionFramerateRequest(
wants.target_pixel_count, wants.max_pixel_count, wants.max_framerate_fps);
}
} // namespace test
} // namespace webrtc
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