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/*
* Copyright (c) 2022 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 API_VIDEO_CODECS_SCALABILITY_MODE_H_
#define API_VIDEO_CODECS_SCALABILITY_MODE_H_
#include <stddef.h>
#include <stdint.h>
#include <optional>
#include "absl/strings/string_view.h"
#include "rtc_base/system/rtc_export.h"
namespace webrtc {
// Supported scalability modes. Most applications should use the
// PeerConnection-level apis where scalability mode is represented as a string.
// This list of currently recognized modes is intended for the api boundary
// between webrtc and injected encoders. Any application usage outside of
// injected encoders is strongly discouraged.
enum class ScalabilityMode : uint8_t {
kL1T1,
kL1T2,
kL1T3,
kL2T1,
kL2T1h,
kL2T1_KEY,
kL2T2,
kL2T2h,
kL2T2_KEY,
kL2T2_KEY_SHIFT,
kL2T3,
kL2T3h,
kL2T3_KEY,
kL3T1,
kL3T1h,
kL3T1_KEY,
kL3T2,
kL3T2h,
kL3T2_KEY,
kL3T3,
kL3T3h,
kL3T3_KEY,
kS2T1,
kS2T1h,
kS2T2,
kS2T2h,
kS2T3,
kS2T3h,
kS3T1,
kS3T1h,
kS3T2,
kS3T2h,
kS3T3,
kS3T3h,
};
inline constexpr ScalabilityMode kAllScalabilityModes[] = {
// clang-format off
ScalabilityMode::kL1T1,
ScalabilityMode::kL1T2,
ScalabilityMode::kL1T3,
ScalabilityMode::kL2T1,
ScalabilityMode::kL2T1h,
ScalabilityMode::kL2T1_KEY,
ScalabilityMode::kL2T2,
ScalabilityMode::kL2T2h,
ScalabilityMode::kL2T2_KEY,
ScalabilityMode::kL2T2_KEY_SHIFT,
ScalabilityMode::kL2T3,
ScalabilityMode::kL2T3h,
ScalabilityMode::kL2T3_KEY,
ScalabilityMode::kL3T1,
ScalabilityMode::kL3T1h,
ScalabilityMode::kL3T1_KEY,
ScalabilityMode::kL3T2,
ScalabilityMode::kL3T2h,
ScalabilityMode::kL3T2_KEY,
ScalabilityMode::kL3T3,
ScalabilityMode::kL3T3h,
ScalabilityMode::kL3T3_KEY,
ScalabilityMode::kS2T1,
ScalabilityMode::kS2T1h,
ScalabilityMode::kS2T2,
ScalabilityMode::kS2T2h,
ScalabilityMode::kS2T3,
ScalabilityMode::kS2T3h,
ScalabilityMode::kS3T1,
ScalabilityMode::kS3T1h,
ScalabilityMode::kS3T2,
ScalabilityMode::kS3T2h,
ScalabilityMode::kS3T3,
ScalabilityMode::kS3T3h,
// clang-format on
};
inline constexpr size_t kScalabilityModeCount =
sizeof(kAllScalabilityModes) / sizeof(ScalabilityMode);
RTC_EXPORT
absl::string_view ScalabilityModeToString(ScalabilityMode scalability_mode);
RTC_EXPORT
absl::string_view ScalabilityModeToString(
std::optional<ScalabilityMode> scalability_mode);
} // namespace webrtc
#endif // API_VIDEO_CODECS_SCALABILITY_MODE_H_
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