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
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/*
* Copyright 2003-2021 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 "PartitionCommands.hxx"
#include "Request.hxx"
#include "Instance.hxx"
#include "Partition.hxx"
#include "IdleFlags.hxx"
#include "output/Filtered.hxx"
#include "client/Client.hxx"
#include "client/Response.hxx"
#include "util/CharUtil.hxx"
CommandResult
handle_partition(Client &client, Request request, Response &response)
{
const char *name = request.front();
auto &instance = client.GetInstance();
auto *partition = instance.FindPartition(name);
if (partition == nullptr) {
response.Error(ACK_ERROR_NO_EXIST, "partition does not exist");
return CommandResult::ERROR;
}
client.SetPartition(*partition);
return CommandResult::OK;
}
CommandResult
handle_listpartitions(Client &client, Request, Response &r)
{
for (const auto &partition : client.GetInstance().partitions) {
r.Format("partition: %s\n", partition.name.c_str());
}
return CommandResult::OK;
}
static constexpr bool
IsValidPartitionChar(char ch)
{
return IsAlphaNumericASCII(ch) || ch == '-' || ch == '_';
}
gcc_pure
static bool
IsValidPartitionName(const char *name) noexcept
{
do {
if (!IsValidPartitionChar(*name))
return false;
} while (*++name != 0);
return true;
}
gcc_pure
static bool
HasPartitionNamed(Instance &instance, const char *name) noexcept
{
return instance.FindPartition(name) != nullptr;
}
CommandResult
handle_newpartition(Client &client, Request request, Response &response)
{
const char *name = request.front();
if (!IsValidPartitionName(name)) {
response.Error(ACK_ERROR_ARG, "bad name");
return CommandResult::ERROR;
}
auto &instance = client.GetInstance();
if (HasPartitionNamed(instance, name)) {
response.Error(ACK_ERROR_EXIST, "name already exists");
return CommandResult::ERROR;
}
if (instance.partitions.size() >= 16) {
/* arbitrary limit for now */
response.Error(ACK_ERROR_UNKNOWN, "too many partitions");
return CommandResult::ERROR;
}
instance.partitions.emplace_back(instance, name,
// TODO: use real configuration
16384,
1024,
AudioFormat::Undefined(),
ReplayGainConfig());
auto &partition = instance.partitions.back();
partition.UpdateEffectiveReplayGainMode();
instance.EmitIdle(IDLE_PARTITION);
return CommandResult::OK;
}
CommandResult
handle_delpartition(Client &client, Request request, Response &response)
{
const char *name = request.front();
if (!IsValidPartitionName(name)) {
response.Error(ACK_ERROR_ARG, "bad name");
return CommandResult::ERROR;
}
auto &instance = client.GetInstance();
auto *partition = instance.FindPartition(name);
if (partition == nullptr) {
response.Error(ACK_ERROR_NO_EXIST, "no such partition");
return CommandResult::ERROR;
}
if (partition == &instance.partitions.front()) {
response.Error(ACK_ERROR_UNKNOWN,
"cannot delete the default partition");
return CommandResult::ERROR;
}
if (!partition->clients.empty()) {
response.Error(ACK_ERROR_UNKNOWN,
"partition still has clients");
return CommandResult::ERROR;
}
if (!partition->outputs.IsDummy()) {
response.Error(ACK_ERROR_UNKNOWN,
"partition still has outputs");
return CommandResult::ERROR;
}
partition->BeginShutdown();
instance.DeletePartition(*partition);
instance.EmitIdle(IDLE_PARTITION);
return CommandResult::OK;
}
CommandResult
handle_moveoutput(Client &client, Request request, Response &response)
{
const char *output_name = request[0];
auto &dest_partition = client.GetPartition();
auto *existing_output = dest_partition.outputs.FindByName(output_name);
if (existing_output != nullptr && !existing_output->IsDummy())
/* this output is already in the specified partition,
so nothing needs to be done */
return CommandResult::OK;
/* find the partition which owns this output currently */
auto &instance = client.GetInstance();
for (auto &partition : instance.partitions) {
if (&partition == &dest_partition)
continue;
auto *output = partition.outputs.FindByName(output_name);
if (output == nullptr || output->IsDummy())
continue;
const bool was_enabled = output->IsEnabled();
if (existing_output != nullptr)
/* move the output back where it once was */
existing_output->ReplaceDummy(output->Steal(),
was_enabled);
else
/* copy the AudioOutputControl and add it to the output list */
dest_partition.outputs.AddCopy(output,was_enabled);
instance.EmitIdle(IDLE_OUTPUT);
return CommandResult::OK;
}
response.Error(ACK_ERROR_NO_EXIST, "No such output");
return CommandResult::ERROR;
}
|
