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/*
* Copyright (c) 2012 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.
*/
#ifndef MODULES_VIDEO_CODING_MEDIA_OPTIMIZATION_H_
#define MODULES_VIDEO_CODING_MEDIA_OPTIMIZATION_H_
#include <memory>
#include "modules/include/module_common_types.h"
#include "modules/video_coding/include/video_coding.h"
#include "modules/video_coding/media_opt_util.h"
#include "rtc_base/criticalsection.h"
namespace webrtc {
class Clock;
class FrameDropper;
namespace media_optimization {
class MediaOptimization {
public:
explicit MediaOptimization(Clock* clock);
~MediaOptimization();
// TODO(andresp): Can Reset and SetEncodingData be done at construction time
// only?
void Reset();
// Informs media optimization of initial encoding state.
// TODO(perkj): Deprecate SetEncodingData once its not used for stats in
// VideoStreamEncoder.
void SetEncodingData(int32_t max_bit_rate,
uint32_t bit_rate,
uint32_t max_frame_rate);
// Sets target rates for the encoder given the channel parameters.
// Input: |target bitrate| - the encoder target bitrate in bits/s.
uint32_t SetTargetRates(uint32_t target_bitrate);
void EnableFrameDropper(bool enable);
bool DropFrame();
// Informs Media Optimization of encoded output.
// TODO(perkj): Deprecate SetEncodingData once its not used for stats in
// VideoStreamEncoder.
void UpdateWithEncodedData(const EncodedImage& encoded_image);
// InputFrameRate 0 = no frame rate estimate available.
uint32_t InputFrameRate();
private:
enum { kFrameCountHistorySize = 90 };
void UpdateIncomingFrameRate() RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
void ProcessIncomingFrameRate(int64_t now)
RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
uint32_t InputFrameRateInternal() RTC_EXCLUSIVE_LOCKS_REQUIRED(crit_sect_);
// Protect all members.
rtc::CriticalSection crit_sect_;
Clock* const clock_ RTC_GUARDED_BY(crit_sect_);
int32_t max_bit_rate_ RTC_GUARDED_BY(crit_sect_);
float max_frame_rate_ RTC_GUARDED_BY(crit_sect_);
std::unique_ptr<FrameDropper> frame_dropper_ RTC_GUARDED_BY(crit_sect_);
float incoming_frame_rate_ RTC_GUARDED_BY(crit_sect_);
int64_t incoming_frame_times_[kFrameCountHistorySize] RTC_GUARDED_BY(
crit_sect_);
};
} // namespace media_optimization
} // namespace webrtc
#endif // MODULES_VIDEO_CODING_MEDIA_OPTIMIZATION_H_
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