| /* |
| * 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 WEBRTC_CALL_RTP_RTCP_DEMUXER_HELPER_H_ |
| #define WEBRTC_CALL_RTP_RTCP_DEMUXER_HELPER_H_ |
| |
| #include <algorithm> |
| #include <map> |
| #include <utility> |
| |
| #include "webrtc/rtc_base/array_view.h" |
| #include "webrtc/rtc_base/basictypes.h" |
| #include "webrtc/rtc_base/optional.h" |
| |
| namespace webrtc { |
| |
| // TODO(eladalon): Remove this in the next CL. |
| template <typename Container> |
| bool MultimapAssociationExists(const Container& multimap, |
| const typename Container::key_type& key, |
| const typename Container::mapped_type& val) { |
| auto it_range = multimap.equal_range(key); |
| using Reference = typename Container::const_reference; |
| return std::any_of(it_range.first, it_range.second, |
| [val](Reference elem) { return elem.second == val; }); |
| } |
| |
| template <typename Container, typename Value> |
| size_t RemoveFromMultimapByValue(Container* multimap, const Value& value) { |
| size_t count = 0; |
| for (auto it = multimap->begin(); it != multimap->end();) { |
| if (it->second == value) { |
| it = multimap->erase(it); |
| ++count; |
| } else { |
| ++it; |
| } |
| } |
| return count; |
| } |
| |
| template <typename Map, typename Value> |
| size_t RemoveFromMapByValue(Map* map, const Value& value) { |
| size_t count = 0; |
| for (auto it = map->begin(); it != map->end();) { |
| if (it->second == value) { |
| it = map->erase(it); |
| ++count; |
| } else { |
| ++it; |
| } |
| } |
| return count; |
| } |
| |
| template <typename Container, typename Key> |
| bool ContainerHasKey(const Container& c, const Key& k) { |
| return std::find(c.cbegin(), c.cend(), k) != c.cend(); |
| } |
| |
| // TODO(eladalon): Remove this in the next CL. |
| template <typename Container> |
| bool MultimapHasValue(const Container& c, |
| const typename Container::mapped_type& v) { |
| auto predicate = [v](const typename Container::value_type& it) { |
| return it.second == v; |
| }; |
| return std::any_of(c.cbegin(), c.cend(), predicate); |
| } |
| |
| template <typename Map> |
| bool MapHasValue(const Map& map, const typename Map::mapped_type& value) { |
| auto predicate = [value](const typename Map::value_type& it) { |
| return it.second == value; |
| }; |
| return std::any_of(map.cbegin(), map.cend(), predicate); |
| } |
| |
| template <typename Container> |
| bool MultimapHasKey(const Container& c, |
| const typename Container::key_type& key) { |
| auto it_range = c.equal_range(key); |
| return it_range.first != it_range.second; |
| } |
| |
| rtc::Optional<uint32_t> ParseRtcpPacketSenderSsrc( |
| rtc::ArrayView<const uint8_t> packet); |
| |
| } // namespace webrtc |
| |
| #endif // WEBRTC_CALL_RTP_RTCP_DEMUXER_HELPER_H_ |