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| 1 /* |
| 2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ |
| 10 |
| 11 #ifndef WEBRTC_CALL_RTP_RTCP_DEMUXER_HELPER_H_ |
| 12 #define WEBRTC_CALL_RTP_RTCP_DEMUXER_HELPER_H_ |
| 13 |
| 14 #include <algorithm> |
| 15 #include <map> |
| 16 #include <utility> |
| 17 |
| 18 #include "webrtc/base/array_view.h" |
| 19 #include "webrtc/base/basictypes.h" |
| 20 #include "webrtc/base/optional.h" |
| 21 |
| 22 namespace webrtc { |
| 23 |
| 24 template <typename Container> |
| 25 bool MultimapAssociationExists(const Container& multimap, |
| 26 const typename Container::key_type& key, |
| 27 const typename Container::mapped_type& val) { |
| 28 auto it_range = multimap.equal_range(key); |
| 29 using Reference = typename Container::const_reference; |
| 30 return std::any_of(it_range.first, it_range.second, |
| 31 [val](Reference elem) { return elem.second == val; }); |
| 32 } |
| 33 |
| 34 template <typename Container, typename Value> |
| 35 size_t RemoveFromMultimapByValue(Container* multimap, const Value& value) { |
| 36 size_t count = 0; |
| 37 for (auto it = multimap->begin(); it != multimap->end();) { |
| 38 if (it->second == value) { |
| 39 it = multimap->erase(it); |
| 40 ++count; |
| 41 } else { |
| 42 ++it; |
| 43 } |
| 44 } |
| 45 return count; |
| 46 } |
| 47 |
| 48 template <typename Container, typename Key> |
| 49 bool ContainerHasKey(const Container& c, const Key& k) { |
| 50 return std::find(c.cbegin(), c.cend(), k) != c.cend(); |
| 51 } |
| 52 |
| 53 template <typename Container> |
| 54 bool MultimapHasValue(const Container& c, |
| 55 const typename Container::mapped_type& v) { |
| 56 auto predicate = [v](const typename Container::value_type& it) { |
| 57 return it.second == v; |
| 58 }; |
| 59 return std::any_of(c.cbegin(), c.cend(), predicate); |
| 60 } |
| 61 |
| 62 rtc::Optional<uint32_t> ParseRtcpPacketSenderSsrc( |
| 63 rtc::ArrayView<const uint8_t> packet); |
| 64 |
| 65 } // namespace webrtc |
| 66 |
| 67 #endif // WEBRTC_CALL_RTP_RTCP_DEMUXER_HELPER_H_ |
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