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/* ------------------------------------------------------------------
* Copyright (C) 2019 Matthias P. Braendli
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied.
* See the License for the specific language governing permissions
* and limitations under the License.
* -------------------------------------------------------------------
*/
#pragma once
#include <string>
#include <cstdint>
#include <cstddef>
#include <cstdio>
/*! \file StatsPublish.h
*
* Collects and sends some stats to a UNIX DGRAM socket so that an external tool
* like ODR-EncoderManager can display it.
*
* Currently, only audio levels are collected.
*
* Output is formatted in YAML
*/
class StatsPublisher {
public:
StatsPublisher(const std::string& socket_path);
StatsPublisher(const StatsPublisher& other) = delete;
StatsPublisher& operator=(const StatsPublisher& other) = delete;
~StatsPublisher();
/*! Update peak audio level information */
void update_audio_levels(int16_t audiolevel_left, int16_t audiolevel_right);
/*! Increments the underrun counter */
void notify_underrun();
/*! Increments the overrun counter */
void notify_overrun();
/*! Send the collected stats to the socket, doesn't block. If the socket is
* not connected, the data is lost.
*
* Clears the collected data. */
void send_stats();
private:
std::string m_socket_path;
int m_sock = -1;
int16_t m_audio_left = 0;
int16_t m_audio_right = 0;
size_t m_num_underruns = 0;
size_t m_num_overruns = 0;
bool m_destination_available = true;
};
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