61 lines
2.2 KiB
C
61 lines
2.2 KiB
C
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/*
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* Copyright 2020 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef VIDEO_ADAPTATION_PIXEL_LIMIT_RESOURCE_H_
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#define VIDEO_ADAPTATION_PIXEL_LIMIT_RESOURCE_H_
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#include <string>
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#include "absl/types/optional.h"
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#include "api/adaptation/resource.h"
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#include "api/scoped_refptr.h"
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#include "call/adaptation/video_stream_input_state_provider.h"
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#include "rtc_base/task_utils/repeating_task.h"
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#include "rtc_base/thread_annotations.h"
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namespace webrtc {
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// An adaptation resource designed to be used in the TestBed. Used to simulate
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// being CPU limited.
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//
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// Periodically reports "overuse" or "underuse" (every 5 seconds) until the
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// stream is within the bounds specified in terms of a maximum resolution and
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// one resolution step lower than that (this avoids toggling when this is the
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// only resource in play). When multiple resources come in to play some amount
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// of toggling is still possible in edge cases but that is OK for testing
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// purposes.
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class PixelLimitResource : public Resource {
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public:
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static rtc::scoped_refptr<PixelLimitResource> Create(
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TaskQueueBase* task_queue,
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VideoStreamInputStateProvider* input_state_provider);
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PixelLimitResource(TaskQueueBase* task_queue,
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VideoStreamInputStateProvider* input_state_provider);
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~PixelLimitResource() override;
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void SetMaxPixels(int max_pixels);
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// Resource implementation.
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std::string Name() const override { return "PixelLimitResource"; }
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void SetResourceListener(ResourceListener* listener) override;
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private:
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TaskQueueBase* const task_queue_;
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VideoStreamInputStateProvider* const input_state_provider_;
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absl::optional<int> max_pixels_ RTC_GUARDED_BY(task_queue_);
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webrtc::ResourceListener* listener_ RTC_GUARDED_BY(task_queue_);
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RepeatingTaskHandle repeating_task_ RTC_GUARDED_BY(task_queue_);
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};
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} // namespace webrtc
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#endif // VIDEO_ADAPTATION_PIXEL_LIMIT_RESOURCE_H_
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