1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
* audiocacheeventhandler.h
*
* Sun Jan 3 19:57:55 CET 2016
* Copyright 2016 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of DrumGizmo.
*
* DrumGizmo 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.
*
* DrumGizmo 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 DrumGizmo; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#pragma once
#include <list>
#include <vector>
#include <mutex>
#include "thread.h"
#include "semaphore.h"
#include "mutex.h"
#include "audiocachefile.h"
#include "audiocacheidmanager.h"
class CacheEvent;
class AudioCacheEventHandler
: protected Thread
{
public:
AudioCacheEventHandler(AudioCacheIDManager& idManager);
~AudioCacheEventHandler();
//! Start event handler thread.
//! This method blocks until the thread has actually been started.
void start();
//! Stop event handler thread.
//! This method blocks until the thread has actually been stopped.
void stop();
//! Set thread status and start/stop thread accordingly.
//! \param threaded Set to true to start thread or false to stop it.
void setThreaded(bool threaded);
//! Get current threaded status.
bool getThreaded() const;
//! Lock thread mutex.
//! This methods are supplied to make this class lockable by std::lock_guard
void lock();
//! Unlock thread mutex.
//! This methods are supplied to make this class lockable by std::lock_guard
void unlock();
void pushLoadNextEvent(AudioCacheFile* afile, size_t channel,
size_t pos, sample_t* buffer,
volatile bool* ready);
void pushCloseEvent(cacheid_t id);
void setChunkSize(size_t chunksize);
size_t chunkSize();
AudioCacheFile& openFile(const std::string& filename);
protected:
AudioCacheFiles files;
std::mutex mutex;
void clearEvents();
void handleLoadNextEvent(CacheEvent& e);
void handleCloseEvent(CacheEvent& e);
void handleCloseCache(cacheid_t cacheid);
void handleEvent(CacheEvent& e);
// From Thread
void thread_main() override;
void pushEvent(CacheEvent& e);
std::list<CacheEvent>* eventqueue;
bool threaded{false};
Semaphore sem;
Semaphore sem_run;
bool running{false};
AudioCacheIDManager& idManager;
size_t chunksize{1024};
};
|
