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* Copyright 2020 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 <string>
#include "absl/types/optional.h"
#include "api/adaptation/resource.h"
#include "api/scoped_refptr.h"
#include "call/adaptation/video_stream_input_state_provider.h"
#include "rtc_base/task_utils/repeating_task.h"
#include "rtc_base/thread_annotations.h"
namespace webrtc {
// An adaptation resource designed to be used in the TestBed. Used to simulate
// being CPU limited.
// Periodically reports "overuse" or "underuse" (every 5 seconds) until the
// stream is within the bounds specified in terms of a maximum resolution and
// one resolution step lower than that (this avoids toggling when this is the
// only resource in play). When multiple resources come in to play some amount
// of toggling is still possible in edge cases but that is OK for testing
// purposes.
class PixelLimitResource : public Resource {
static rtc::scoped_refptr<PixelLimitResource> Create(
TaskQueueBase* task_queue,
VideoStreamInputStateProvider* input_state_provider);
PixelLimitResource(TaskQueueBase* task_queue,
VideoStreamInputStateProvider* input_state_provider);
~PixelLimitResource() override;
void SetMaxPixels(int max_pixels);
// Resource implementation.
std::string Name() const override { return "PixelLimitResource"; }
void SetResourceListener(ResourceListener* listener) override;
TaskQueueBase* const task_queue_;
VideoStreamInputStateProvider* const input_state_provider_;
absl::optional<int> max_pixels_ RTC_GUARDED_BY(task_queue_);
webrtc::ResourceListener* listener_ RTC_GUARDED_BY(task_queue_);
RepeatingTaskHandle repeating_task_ RTC_GUARDED_BY(task_queue_);
} // namespace webrtc