1 /* 2 * Copyright (c) 2016 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 MODULES_AUDIO_CODING_NETEQ_TOOLS_ENCODE_NETEQ_INPUT_H_ 12 #define MODULES_AUDIO_CODING_NETEQ_TOOLS_ENCODE_NETEQ_INPUT_H_ 13 14 #include <memory> 15 16 #include "api/audio_codecs/audio_encoder.h" 17 #include "modules/audio_coding/neteq/tools/neteq_input.h" 18 19 namespace webrtc { 20 namespace test { 21 22 // This class provides a NetEqInput that takes audio from a generator object and 23 // encodes it using a given audio encoder. 24 class EncodeNetEqInput : public NetEqInput { 25 public: 26 // Generator class, to be provided to the EncodeNetEqInput constructor. 27 class Generator { 28 public: 29 virtual ~Generator() = default; 30 // Returns the next num_samples values from the signal generator. 31 virtual rtc::ArrayView<const int16_t> Generate(size_t num_samples) = 0; 32 }; 33 34 // The source will end after the given input duration. 35 EncodeNetEqInput(std::unique_ptr<Generator> generator, 36 std::unique_ptr<AudioEncoder> encoder, 37 int64_t input_duration_ms); 38 ~EncodeNetEqInput() override; 39 40 absl::optional<int64_t> NextPacketTime() const override; 41 42 absl::optional<int64_t> NextOutputEventTime() const override; 43 44 std::unique_ptr<PacketData> PopPacket() override; 45 46 void AdvanceOutputEvent() override; 47 48 bool ended() const override; 49 50 absl::optional<RTPHeader> NextHeader() const override; 51 52 private: 53 static constexpr int64_t kOutputPeriodMs = 10; 54 55 void CreatePacket(); 56 57 std::unique_ptr<Generator> generator_; 58 std::unique_ptr<AudioEncoder> encoder_; 59 std::unique_ptr<PacketData> packet_data_; 60 uint32_t rtp_timestamp_ = 0; 61 int16_t sequence_number_ = 0; 62 int64_t next_packet_time_ms_ = 0; 63 int64_t next_output_event_ms_ = 0; 64 const int64_t input_duration_ms_; 65 }; 66 67 } // namespace test 68 } // namespace webrtc 69 #endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_ENCODE_NETEQ_INPUT_H_ 70