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/*
* Copyright (c) 2017 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_SDP_VIDEO_FORMAT_H_
#define API_VIDEO_CODECS_SDP_VIDEO_FORMAT_H_
#include <map>
#include <optional>
#include <string>
#include "absl/container/inlined_vector.h"
#include "api/array_view.h"
#include "api/rtp_parameters.h"
#include "api/video_codecs/scalability_mode.h"
#include "rtc_base/system/rtc_export.h"
namespace webrtc {
// SDP specification for a single video codec.
// NOTE: This class is still under development and may change without notice.
struct RTC_EXPORT SdpVideoFormat {
using Parameters [[deprecated("Use CodecParameterMap")]] =
std::map<std::string, std::string>;
explicit SdpVideoFormat(const std::string& name);
SdpVideoFormat(const std::string& name, const CodecParameterMap& parameters);
SdpVideoFormat(
const std::string& name,
const CodecParameterMap& parameters,
const absl::InlinedVector<ScalabilityMode, kScalabilityModeCount>&
scalability_modes);
// Creates a new SdpVideoFormat object identical to the supplied
// SdpVideoFormat except the scalability_modes that are set to be the same as
// the supplied scalability modes.
SdpVideoFormat(
const SdpVideoFormat& format,
const absl::InlinedVector<ScalabilityMode, kScalabilityModeCount>&
scalability_modes);
SdpVideoFormat(const SdpVideoFormat&);
SdpVideoFormat(SdpVideoFormat&&);
SdpVideoFormat& operator=(const SdpVideoFormat&);
SdpVideoFormat& operator=(SdpVideoFormat&&);
~SdpVideoFormat();
// Returns true if the SdpVideoFormats have the same names as well as codec
// specific parameters. Please note that two SdpVideoFormats can represent the
// same codec even though not all parameters are the same.
bool IsSameCodec(const SdpVideoFormat& other) const;
bool IsCodecInList(ArrayView<const SdpVideoFormat> formats) const;
std::string ToString() const;
friend RTC_EXPORT bool operator==(const SdpVideoFormat& a,
const SdpVideoFormat& b);
friend RTC_EXPORT bool operator!=(const SdpVideoFormat& a,
const SdpVideoFormat& b) {
return !(a == b);
}
std::string name;
CodecParameterMap parameters;
absl::InlinedVector<ScalabilityMode, kScalabilityModeCount> scalability_modes;
// Well-known video codecs and their format parameters.
static const SdpVideoFormat VP8();
static const SdpVideoFormat H264();
static const SdpVideoFormat H265();
static const SdpVideoFormat VP9Profile0();
static const SdpVideoFormat VP9Profile1();
static const SdpVideoFormat VP9Profile2();
static const SdpVideoFormat VP9Profile3();
static const SdpVideoFormat AV1Profile0();
static const SdpVideoFormat AV1Profile1();
template <typename Sink>
friend void AbslStringify(Sink& sink, const SdpVideoFormat& format) {
sink.Append(format.ToString());
}
};
// For not so good reasons sometimes additional parameters are added to an
// SdpVideoFormat, which makes instances that should compare equal to not match
// anymore. Until we stop misusing SdpVideoFormats provide this convenience
// function to perform fuzzy matching.
std::optional<SdpVideoFormat> FuzzyMatchSdpVideoFormat(
ArrayView<const SdpVideoFormat> supported_formats,
const SdpVideoFormat& format);
} // namespace webrtc
#endif // API_VIDEO_CODECS_SDP_VIDEO_FORMAT_H_
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