simulcast.h - mozsearch

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/*

 *  Copyright (c) 2014 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 VIDEO_CONFIG_SIMULCAST_H_

#define VIDEO_CONFIG_SIMULCAST_H_

#include <stddef.h>

#include <vector>

#include "api/array_view.h"

#include "api/field_trials_view.h"

#include "api/units/data_rate.h"

#include "api/video/resolution.h"

#include "api/video/video_codec_type.h"

#include "video/config/video_encoder_config.h"

namespace webrtc {

// Gets the total maximum bitrate for the `streams`.

DataRate GetTotalMaxBitrate(const std::vector<VideoStream>& streams);

// Adds any bitrate of `max_bitrate` that is above the total maximum bitrate for

// the `layers` to the highest quality layer.

void BoostMaxSimulcastLayer(DataRate max_bitrate,

                            std::vector<VideoStream>* layers);

// Returns number of simulcast streams. The value depends on the resolution and

// is restricted to the range from `min_num_layers` to `max_num_layers`,

// inclusive.

size_t LimitSimulcastLayerCount(size_t min_num_layers,

                                size_t max_num_layers,

                                int width,

                                int height,

                                const FieldTrialsView& trials,

                                VideoCodecType codec);

// Gets simulcast settings.

std::vector<VideoStream> GetSimulcastConfig(

    ArrayView<const Resolution> resolutions,

    bool is_screenshare_with_conference_mode,

    bool temporal_layers_supported,

    const FieldTrialsView& trials,

    VideoCodecType codec);

}  //  namespace webrtc

// Re-export symbols from the webrtc namespace for backwards compatibility.

// TODO(bugs.webrtc.org/4222596): Remove once all references are updated.

#ifdef WEBRTC_ALLOW_DEPRECATED_NAMESPACES

namespace cricket {

using ::webrtc::BoostMaxSimulcastLayer;

using ::webrtc::GetSimulcastConfig;

using ::webrtc::GetTotalMaxBitrate;

using ::webrtc::LimitSimulcastLayerCount;

}  // namespace cricket

#endif  // WEBRTC_ALLOW_DEPRECATED_NAMESPACES

#endif  // VIDEO_CONFIG_SIMULCAST_H_