You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
2.6 KiB
74 lines
2.6 KiB
/*
|
|
* Copyright (C) 2013 by Jonathan Naylor G4KLX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
*/
|
|
|
|
#ifndef AnnouncementUnit_H
|
|
#define AnnouncementUnit_H
|
|
|
|
#include "AnnouncementCallback.h"
|
|
#include "DVTOOLFileWriter.h"
|
|
#include "DVTOOLFileReader.h"
|
|
#include "DStarDefines.h"
|
|
#include "HeaderData.h"
|
|
|
|
#include "StdCompat.h"
|
|
#include <chrono>
|
|
|
|
/*
|
|
* Records and plays back user announcements stored as .dvtool files.
|
|
*
|
|
* Lifecycle:
|
|
* Record — The repeater thread calls writeHeader() then writeData() as
|
|
* audio arrives over RF. The stream is saved to a per-callsign
|
|
* file ("Announce_<callsign>.dvtool") in the user's home directory.
|
|
*
|
|
* Playback — startAnnouncement() opens the callsign-specific file if it
|
|
* exists, falling back to the global "Announce.dvtool". It reads
|
|
* the header and signals the repeater thread to key up. clock()
|
|
* then releases DV frames at air rate (same wall-clock pacing as
|
|
* CBeaconUnit) until the end-of-transmission marker is reached.
|
|
*
|
|
* Delete — deleteAnnouncement() removes the callsign-specific file so the
|
|
* global announcement (or silence) takes effect on the next play.
|
|
*/
|
|
class CAnnouncementUnit {
|
|
public:
|
|
CAnnouncementUnit(IAnnouncementCallback* handler, const std::string& callsign);
|
|
~CAnnouncementUnit();
|
|
|
|
bool writeHeader(const CHeaderData& header);
|
|
bool writeData(const unsigned char* data, unsigned int length, bool end);
|
|
|
|
void deleteAnnouncement();
|
|
|
|
void startAnnouncement();
|
|
|
|
// Called every repeater tick; releases frames to the transmitter at air rate.
|
|
void clock();
|
|
|
|
private:
|
|
IAnnouncementCallback* m_handler;
|
|
std::string m_localFileName; // Callsign-specific filename (no extension).
|
|
CDVTOOLFileReader m_reader;
|
|
CDVTOOLFileWriter m_writer;
|
|
std::chrono::steady_clock::time_point m_time;
|
|
unsigned int m_out; // Frames dispatched so far during playback.
|
|
bool m_sending;
|
|
};
|
|
|
|
#endif
|