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// Copyright 2020 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "media/base/video_frame_feedback.h"
#include <cmath>
namespace media {
VideoFrameFeedback::VideoFrameFeedback() = default;
VideoFrameFeedback::VideoFrameFeedback(const VideoFrameFeedback& other) =
default;
VideoFrameFeedback::VideoFrameFeedback(double resource_utilization,
float max_framerate_fps,
int max_pixels)
: resource_utilization(resource_utilization),
max_framerate_fps(max_framerate_fps),
max_pixels(max_pixels) {}
void VideoFrameFeedback::Combine(const VideoFrameFeedback& other) {
// Take maximum of non-negative and finite |resource_utilization| values.
if (other.resource_utilization >= 0 &&
std::isfinite(other.resource_utilization)) {
if (!std::isfinite(resource_utilization) ||
resource_utilization < other.resource_utilization) {
resource_utilization = other.resource_utilization;
}
}
// Take minimum non-negative max_pixels value to satisfy both constraints.
if (other.max_pixels > 0 &&
(max_pixels <= 0 || max_pixels > other.max_pixels)) {
max_pixels = other.max_pixels;
}
// Take minimum of non-negative max_framerate_fps.
if (other.max_framerate_fps >= 0.0 &&
(max_framerate_fps < 0.0 || max_framerate_fps > other.max_framerate_fps))
max_framerate_fps = other.max_framerate_fps;
}
bool VideoFrameFeedback::Empty() const {
return !std::isfinite(max_framerate_fps) &&
max_pixels == std::numeric_limits<int>::max() &&
(resource_utilization < 0.0);
}
} // namespace media
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