scalability_structure_test_helpers.h

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/*

 *  Copyright (c) 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.

*/

#ifndef MODULES_VIDEO_CODING_SVC_SCALABILITY_STRUCTURE_TEST_HELPERS_H_

#define MODULES_VIDEO_CODING_SVC_SCALABILITY_STRUCTURE_TEST_HELPERS_H_

#include <stdint.h>

#include <vector>

#include "api/array_view.h"

#include "api/transport/rtp/dependency_descriptor.h"

#include "api/video/video_bitrate_allocation.h"

#include "common_video/generic_frame_descriptor/generic_frame_info.h"

#include "modules/video_coding/chain_diff_calculator.h"

#include "modules/video_coding/frame_dependencies_calculator.h"

#include "modules/video_coding/svc/scalable_video_controller.h"

namespace webrtc {

// Creates bitrate allocation with non-zero bitrate for given number of temporal

// layers for each spatial layer.

VideoBitrateAllocation EnableTemporalLayers(int s0, int s1 = 0, int s2 = 0);

class ScalabilityStructureWrapper {

 public:

  explicit ScalabilityStructureWrapper(ScalableVideoController& structure)

      : structure_controller_(structure) {}

  std::vector<GenericFrameInfo> GenerateFrames(int num_temporal_units) {

    std::vector<GenericFrameInfo> frames;

    GenerateFrames(num_temporal_units, frames);

    return frames;

  void GenerateFrames(int num_temporal_units,

                      std::vector<GenericFrameInfo>& frames);

  // Returns false and ADD_FAILUREs for frames with invalid references.

  // In particular validates no frame frame reference to frame before frames[0].

  // In error messages frames are indexed starting with 0.

  bool FrameReferencesAreValid(

      rtc::ArrayView<const GenericFrameInfo> frames) const;

 private:

  ScalableVideoController& structure_controller_;

  FrameDependenciesCalculator frame_deps_calculator_;

  ChainDiffCalculator chain_diff_calculator_;

  int64_t frame_id_ = 0;

};

}  // namespace webrtc

#endif  // MODULES_VIDEO_CODING_SVC_SCALABILITY_STRUCTURE_TEST_HELPERS_H_