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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_RTP_RTCP_INCLUDE_RTP_HEADER_EXTENSION_MAP_H_
#define MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_EXTENSION_MAP_H_
#include <stdint.h>
#include <string>
#include "absl/strings/string_view.h"
#include "api/array_view.h"
#include "api/rtp_parameters.h"
#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
#include "rtc_base/checks.h"
namespace webrtc {
class RtpHeaderExtensionMap {
public:
static constexpr RTPExtensionType kInvalidType = kRtpExtensionNone;
static constexpr int kInvalidId = 0;
RtpHeaderExtensionMap();
explicit RtpHeaderExtensionMap(bool extmap_allow_mixed);
explicit RtpHeaderExtensionMap(rtc::ArrayView<const RtpExtension> extensions);
void Reset(rtc::ArrayView<const RtpExtension> extensions);
template <typename Extension>
bool Register(int id) {
return Register(id, Extension::kId, Extension::Uri());
}
bool RegisterByType(int id, RTPExtensionType type);
bool RegisterByUri(int id, absl::string_view uri);
bool IsRegistered(RTPExtensionType type) const {
return GetId(type) != kInvalidId;
}
// Return kInvalidType if not found.
RTPExtensionType GetType(int id) const;
// Return kInvalidId if not found.
uint8_t GetId(RTPExtensionType type) const {
RTC_DCHECK_GT(type, kRtpExtensionNone);
RTC_DCHECK_LT(type, kRtpExtensionNumberOfExtensions);
return ids_[type];
}
void Deregister(absl::string_view uri);
// Corresponds to the SDP attribute extmap-allow-mixed, see RFC8285.
// Set to true if it's allowed to mix one- and two-byte RTP header extensions
// in the same stream.
bool ExtmapAllowMixed() const { return extmap_allow_mixed_; }
void SetExtmapAllowMixed(bool extmap_allow_mixed) {
extmap_allow_mixed_ = extmap_allow_mixed;
}
private:
bool Register(int id, RTPExtensionType type, absl::string_view uri);
uint8_t ids_[kRtpExtensionNumberOfExtensions];
bool extmap_allow_mixed_;
};
} // namespace webrtc
#endif // MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_EXTENSION_MAP_H_