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/*
* Copyright (c) 2014 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 MODULES_AUDIO_CODING_NETEQ_TOOLS_CONSTANT_PCM_PACKET_SOURCE_H_
#define MODULES_AUDIO_CODING_NETEQ_TOOLS_CONSTANT_PCM_PACKET_SOURCE_H_
#include <stdio.h>
#include <string>
#include "modules/audio_coding/neteq/tools/packet_source.h"
namespace webrtc {
namespace test {
// This class implements a packet source that delivers PCM16b encoded packets
// with a constant sample value. The payload length, constant sample value,
// sample rate, and payload type are all set in the constructor.
class ConstantPcmPacketSource : public PacketSource {
public:
ConstantPcmPacketSource(size_t payload_len_samples,
int16_t sample_value,
int sample_rate_hz,
int payload_type);
ConstantPcmPacketSource(const ConstantPcmPacketSource&) = delete;
ConstantPcmPacketSource& operator=(const ConstantPcmPacketSource&) = delete;
std::unique_ptr<Packet> NextPacket() override;
private:
void WriteHeader(uint8_t* packet_memory);
const size_t kHeaderLenBytes = 12;
const size_t payload_len_samples_;
const size_t packet_len_bytes_;
uint8_t encoded_sample_[2];
const int samples_per_ms_;
double next_arrival_time_ms_;
const int payload_type_;
uint16_t seq_number_;
uint32_t timestamp_;
const uint32_t payload_ssrc_;
};
} // namespace test
} // namespace webrtc
#endif // MODULES_AUDIO_CODING_NETEQ_TOOLS_CONSTANT_PCM_PACKET_SOURCE_H_
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