c5744b8b21
When two-byte header extensions are enabled, kMaxId will change from 15 to 255. This CL is a refactor to remove the direct dependency between memory allocation and kMaxId. Bug: webrtc:7990 Change-Id: I38974a9c705eb6a0fdba9038a7d909861587d98d Reviewed-on: https://webrtc-review.googlesource.com/101580 Commit-Queue: Johannes Kron <kron@webrtc.org> Reviewed-by: Danil Chapovalov <danilchap@webrtc.org> Cr-Commit-Position: refs/heads/master@{#24801}
75 lines
2.2 KiB
C++
75 lines
2.2 KiB
C++
/*
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* Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_EXTENSION_MAP_H_
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#define MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_EXTENSION_MAP_H_
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#include <string>
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#include "api/array_view.h"
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#include "api/rtpparameters.h"
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#include "modules/rtp_rtcp/include/rtp_rtcp_defines.h"
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#include "rtc_base/checks.h"
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namespace webrtc {
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struct RtpExtensionSize {
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RTPExtensionType type;
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uint8_t value_size;
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};
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class RtpHeaderExtensionMap {
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public:
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static constexpr RTPExtensionType kInvalidType = kRtpExtensionNone;
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static constexpr int kInvalidId = 0;
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RtpHeaderExtensionMap();
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explicit RtpHeaderExtensionMap(rtc::ArrayView<const RtpExtension> extensions);
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template <typename Extension>
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bool Register(int id) {
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return Register(id, Extension::kId, Extension::kUri);
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}
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bool RegisterByType(int id, RTPExtensionType type);
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bool RegisterByUri(int id, const std::string& uri);
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bool IsRegistered(RTPExtensionType type) const {
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return GetId(type) != kInvalidId;
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}
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// Return kInvalidType if not found.
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RTPExtensionType GetType(int id) const;
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// Return kInvalidId if not found.
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uint8_t GetId(RTPExtensionType type) const {
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RTC_DCHECK_GT(type, kRtpExtensionNone);
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RTC_DCHECK_LT(type, kRtpExtensionNumberOfExtensions);
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return ids_[type];
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}
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size_t GetTotalLengthInBytes(
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rtc::ArrayView<const RtpExtensionSize> extensions) const;
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// TODO(danilchap): Remove use of the functions below.
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int32_t Register(RTPExtensionType type, int id) {
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return RegisterByType(id, type) ? 0 : -1;
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}
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int32_t Deregister(RTPExtensionType type);
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private:
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static constexpr int kMinId = 1;
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static constexpr int kMaxId = 14;
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bool Register(int id, RTPExtensionType type, const char* uri);
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uint8_t ids_[kRtpExtensionNumberOfExtensions];
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};
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} // namespace webrtc
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#endif // MODULES_RTP_RTCP_INCLUDE_RTP_HEADER_EXTENSION_MAP_H_
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