| /* |
| * Copyright (c) 2016 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_MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_INPUT_H_ |
| #define WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_INPUT_H_ |
| |
| #include <algorithm> |
| #include <memory> |
| |
| #include "webrtc/base/buffer.h" |
| #include "webrtc/base/optional.h" |
| #include "webrtc/modules/audio_coding/neteq/tools/packet.h" |
| #include "webrtc/modules/audio_coding/neteq/tools/packet_source.h" |
| #include "webrtc/modules/include/module_common_types.h" |
| |
| namespace webrtc { |
| namespace test { |
| |
| // Interface class for input to the NetEqTest class. |
| class NetEqInput { |
| public: |
| struct PacketData { |
| WebRtcRTPHeader header; |
| rtc::Buffer payload; |
| double time_ms; |
| }; |
| |
| virtual ~NetEqInput() = default; |
| |
| // Returns at what time (in ms) NetEq::InsertPacket should be called next, or |
| // empty if the source is out of packets. |
| virtual rtc::Optional<int64_t> NextPacketTime() const = 0; |
| |
| // Returns at what time (in ms) NetEq::GetAudio should be called next, or |
| // empty if no more output events are available. |
| virtual rtc::Optional<int64_t> NextOutputEventTime() const = 0; |
| |
| // Returns the time (in ms) for the next event from either NextPacketTime() |
| // or NextOutputEventTime(), or empty if both are out of events. |
| rtc::Optional<int64_t> NextEventTime() const { |
| const auto a = NextPacketTime(); |
| const auto b = NextOutputEventTime(); |
| // Return the minimum of non-empty |a| and |b|, or empty if both are empty. |
| if (a) { |
| return b ? rtc::Optional<int64_t>(std::min(*a, *b)) : a; |
| } |
| return b ? b : rtc::Optional<int64_t>(); |
| } |
| |
| // Returns the next packet to be inserted into NetEq. The packet following the |
| // returned one is pre-fetched in the NetEqInput object, such that future |
| // calls to NextPacketTime() or NextHeader() will return information from that |
| // packet. |
| virtual std::unique_ptr<PacketData> PopPacket() = 0; |
| |
| // Move to the next output event. This will make NextOutputEventTime() return |
| // a new value (potentially the same if several output events share the same |
| // time). |
| virtual void AdvanceOutputEvent() = 0; |
| |
| // Returns true if the source has come to an end. |
| virtual bool ended() const = 0; |
| |
| // Returns the RTP header for the next packet, i.e., the packet that will be |
| // delivered next by PopPacket(). |
| virtual rtc::Optional<RTPHeader> NextHeader() const = 0; |
| }; |
| |
| } // namespace test |
| } // namespace webrtc |
| #endif // WEBRTC_MODULES_AUDIO_CODING_NETEQ_TOOLS_NETEQ_INPUT_H_ |