threadsignal.h

#ifndef threadsignal_HEADER_GUARD
#define threadsignal_HEADER_GUARD
/*
 * signal.h : Signals used by thread classes
 * 
 * (c) Copyright 2017-2024 Sampsa Riikonen
 * 
 * Authors: Sampsa Riikonen <sampsa.riikonen@iki.fi>
 * 
 * This file is part of the Valkka library.
 * 
 * Valkka is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation, either version 3 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>
 *
 */
 
#include "constant.h"
 
enum class AbstractFileState
{
    none,
    error,
    seek, // seek start
    stop, // stream stopped
    play  // stream is playing
};
 
/*
enum class SignalType
{
    avthread,             ///< AVThread
    openglthread,         ///< OpenGLThread
    valkkafswriterthread, ///< ValkkaFSWriterThread
    valkkafsreaderthread, ///< ValkkaFSReaderThread
    offline               ///< A special signal caught by AlertFrameFilter
};
*/
 
namespace SignalType { 
  const static unsigned none = 0;
  const static unsigned livethread = 1;
  const static unsigned avthread = 2;
  const static unsigned openglthread = 3;
  const static unsigned valkkafswriterthread = 4;
  const static unsigned valkkafsreaderthread = 5;
  const static unsigned filecachethread = 6;
  const static unsigned fdwritethread = 7;
  const static unsigned offline = 8; 
}
 
 
enum class AVSignal
{
    none,
    exit,
    on, 
    off 
};
 
struct AVSignalContext
{
    AVSignal signal;
    // AVConnectionContext connection_context; // in the case we want pass more information
};
 
struct OpenGLSignalPars
{                       // used by signals:
    SlotNumber n_slot;  
    Window x_window_id; 
 
    unsigned int z; 
    int render_ctx; 
 
    std::array<float, 4> object_coordinates; 
 
    bool success; 
};
 
// std::ostream &operator<<(std::ostream &os, OpenGLSignalPars const &m);
inline std::ostream &operator<<(std::ostream &os, OpenGLSignalPars const &m)
{
    return os << "<OpenGLSignalPars: slot=" << m.n_slot << " x_window_id=" << m.x_window_id << " z=" << m.z << " render_context=" << m.render_ctx << " success=" << m.success << ">";
};
 
enum class OpenGLSignal
{
    none, 
    exit, 
    info, 
 
    new_render_group, 
    del_render_group, 
 
    new_render_context, 
    del_render_context, 
 
    new_rectangle, 
    clear_objects  
};
 
struct OpenGLSignalContext
{
    OpenGLSignal signal; 
    // OpenGLSignalPars  *pars;     ///< Why pointers? .. we have return values here // nopes .. not anymore
    OpenGLSignalPars pars;
};
 
struct ValkkaFSWriterSignalPars
{
    std::size_t n_block; 
    SlotNumber n_slot;   
    IdNumber id;         
};
 
enum class ValkkaFSWriterSignal
{
    none,
    exit,
 
    seek, 
 
    set_slot_id,   
    unset_slot_id, 
    clear_slot_id, 
    report_slot_id 
};
 
struct ValkkaFSWriterSignalContext
{
    ValkkaFSWriterSignal signal;
    ValkkaFSWriterSignalPars pars;
};
 
struct ValkkaFSReaderSignalPars
{
    std::list<std::size_t> block_list; 
    SlotNumber n_slot;                 
    IdNumber id;                       
};
 
enum class ValkkaFSReaderSignal
{
    none,
    exit,
 
    pull_blocks, 
 
    set_slot_id,   
    unset_slot_id, 
    clear_slot_id, 
    report_slot_id 
};
 
struct ValkkaFSReaderSignalContext
{
    ValkkaFSReaderSignal signal;
    ValkkaFSReaderSignalPars pars;
};
 
 
struct OfflineSignalContext
{
    SlotNumber n_slot;
};
 
 
#endif