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
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* Copyright (C) 2003-2015 The Music Player Daemon Project
* http://www.musicpd.org
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "DecoderControl.hxx"
#include "MusicPipe.hxx"
#include "DetachedSong.hxx"
#include <assert.h>
DecoderControl::DecoderControl(Mutex &_mutex, Cond &_client_cond)
:mutex(_mutex), client_cond(_client_cond),
state(DecoderState::STOP),
command(DecoderCommand::NONE),
client_is_waiting(false),
song(nullptr),
replay_gain_db(0), replay_gain_prev_db(0) {}
DecoderControl::~DecoderControl()
{
ClearError();
delete song;
}
void
DecoderControl::WaitForDecoder()
{
assert(!client_is_waiting);
client_is_waiting = true;
client_cond.wait(mutex);
assert(client_is_waiting);
client_is_waiting = false;
}
bool
DecoderControl::IsCurrentSong(const DetachedSong &_song) const
{
switch (state) {
case DecoderState::STOP:
case DecoderState::ERROR:
return false;
case DecoderState::START:
case DecoderState::DECODE:
return song->IsSame(_song);
}
assert(false);
gcc_unreachable();
}
void
DecoderControl::Start(DetachedSong *_song,
SongTime _start_time, SongTime _end_time,
MusicBuffer &_buffer, MusicPipe &_pipe)
{
assert(_song != nullptr);
assert(_pipe.IsEmpty());
delete song;
song = _song;
start_time = _start_time;
end_time = _end_time;
buffer = &_buffer;
pipe = &_pipe;
LockSynchronousCommand(DecoderCommand::START);
}
void
DecoderControl::Stop()
{
Lock();
if (command != DecoderCommand::NONE)
/* Attempt to cancel the current command. If it's too
late and the decoder thread is already executing
the old command, we'll call STOP again in this
function (see below). */
SynchronousCommandLocked(DecoderCommand::STOP);
if (state != DecoderState::STOP && state != DecoderState::ERROR)
SynchronousCommandLocked(DecoderCommand::STOP);
Unlock();
}
bool
DecoderControl::Seek(SongTime t)
{
assert(state != DecoderState::START);
if (state == DecoderState::STOP ||
state == DecoderState::ERROR || !seekable)
return false;
seek_time = t;
seek_error = false;
LockSynchronousCommand(DecoderCommand::SEEK);
return !seek_error;
}
void
DecoderControl::Quit()
{
assert(thread.IsDefined());
quit = true;
LockAsynchronousCommand(DecoderCommand::STOP);
thread.Join();
}
void
DecoderControl::CycleMixRamp()
{
previous_mix_ramp = std::move(mix_ramp);
mix_ramp.Clear();
}
|
