RTSPServer.h

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/*
 * Author: Phil Schatzmann
 *
 * Based on Micro-RTSP library:
 * https://github.com/geeksville/Micro-RTSP
 * https://github.com/Tomp0801/Micro-RTSP-Audio
 *
 */
 
#pragma once
#include "RTSPMediaStreamer.h"
#include "RTSPServerBase.h"
#ifdef ESP32
#include <WiFi.h>
#include <esp_wifi.h>
 
#include "AudioTools/Concurrency/RTOS.h"
#endif
 
namespace audio_tools {

template <typename Platform>
class RTSPServer : public RTSPServerBase<Platform> {
 public:
  using streamer_t = RTSPMediaStreamerBase<Platform>;
 
  RTSPServer(streamer_t& streamer, int port = 8554, int core = 1)
      : RTSPServerBase<Platform>(streamer, port), core(core) {}
 
  ~RTSPServer() { end(); }
 
#ifdef ESP32
 
  bool begin(const char* ssid, const char* password) {
    return RTSPServerBase<Platform>::begin(ssid, password);
  }
#endif
 
  bool begin() {
    if (!RTSPServerBase<Platform>::begin()) return false;
    if (!serverTask.begin([this]() { serverThreadLoop(); })) {
      LOGE("Couldn't start server thread");
      return false;
    }
    return true;
  }
 
  void end() {
    sessionTask.end();
    serverTask.end();
    RTSPServerBase<Platform>::end();
  }
 
 protected:
  int core = 0;
  audio_tools::Task serverTask{"RTSPServerThread", 10000, 5, core};
  audio_tools::Task sessionTask{"RTSPSessionTask", 8000, 8, core};
 
  void serverThreadLoop() {
    unsigned long lastCheck = millis();
    LOGD("Server thread listening... (numClients: %d)", this->client_count);
    int prevClientCount = this->client_count;
    this->acceptClient();
    // If a new client was accepted, start session task
    if (this->client_count > prevClientCount) {
      LOGI("Client connected");
      if (!sessionTask.begin([this]() { sessionThreadLoop(); })) {
        LOGE("Couldn't start sessionThread");
        Platform::closeSocket(&this->client);
        this->client_count--;
      } else {
        LOGI("Number of clients: %d", this->client_count);
      }
    } else if (this->client_count > 0) {
      LOGD("Waiting for current session to end (numClients: %d)", this->client_count);
    }
    int time = 200 - (millis() - lastCheck);
    if (time < 0) time = 0;
    delay(time);
  }
 
  void sessionThreadLoop() {
    LOGD("RTSP Task running");
    while (this->rtspSession && this->rtspSession->isSessionOpen()) {
      this->handleSession();
      delay(30);
    }
    delay(500);
    LOGI("Session cleaned up: (numClients: %d)", this->client_count);
    sessionTask.end();
  }
};
 
}  // namespace audio_tools