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
|
/*
* Copyright 2003-2017 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 "output/Internal.hxx"
#include "output/OutputPlugin.hxx"
#include "output/Client.hxx"
#include "config/Param.hxx"
#include "config/ConfigGlobal.hxx"
#include "config/ConfigOption.hxx"
#include "Idle.hxx"
#include "Main.hxx"
#include "event/Thread.hxx"
#include "fs/Path.hxx"
#include "AudioParser.hxx"
#include "ReplayGainConfig.hxx"
#include "pcm/PcmConvert.hxx"
#include "filter/FilterRegistry.hxx"
#include "util/StringBuffer.hxx"
#include "util/RuntimeError.hxx"
#include "util/ScopeExit.hxx"
#include "Log.hxx"
#include <assert.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
class DummyAudioOutputClient final : public AudioOutputClient {
public:
/* virtual methods from AudioOutputClient */
void ChunksConsumed() override {
}
void ApplyEnabled() override {
}
};
const FilterPlugin *
filter_plugin_by_name(gcc_unused const char *name) noexcept
{
assert(false);
return NULL;
}
static AudioOutput *
load_audio_output(EventLoop &event_loop, AudioOutputClient &client,
const char *name)
{
const auto *param = config_find_block(ConfigBlockOption::AUDIO_OUTPUT,
"name", name);
if (param == NULL)
throw FormatRuntimeError("No such configured audio output: %s\n",
name);
return audio_output_new(event_loop, ReplayGainConfig(), *param,
*(MixerListener *)nullptr,
client);
}
static void
run_output(AudioOutput &ao, AudioFormat audio_format)
{
/* open the audio output */
ao_plugin_enable(ao);
AtScopeExit(&ao) { ao_plugin_disable(ao); };
ao_plugin_open(ao, audio_format);
AtScopeExit(&ao) { ao_plugin_close(ao); };
fprintf(stderr, "audio_format=%s\n",
ToString(audio_format).c_str());
size_t frame_size = audio_format.GetFrameSize();
/* play */
size_t length = 0;
char buffer[4096];
while (true) {
if (length < sizeof(buffer)) {
ssize_t nbytes = read(0, buffer + length,
sizeof(buffer) - length);
if (nbytes <= 0)
break;
length += (size_t)nbytes;
}
size_t play_length = (length / frame_size) * frame_size;
if (play_length > 0) {
size_t consumed = ao_plugin_play(ao,
buffer, play_length);
assert(consumed <= length);
assert(consumed % frame_size == 0);
length -= consumed;
memmove(buffer, buffer + consumed, length);
}
}
}
int main(int argc, char **argv)
try {
if (argc < 3 || argc > 4) {
fprintf(stderr, "Usage: run_output CONFIG NAME [FORMAT] <IN\n");
return EXIT_FAILURE;
}
const Path config_path = Path::FromFS(argv[1]);
AudioFormat audio_format(44100, SampleFormat::S16, 2);
/* read configuration file (mpd.conf) */
config_global_init();
ReadConfigFile(config_path);
EventThread io_thread;
io_thread.Start();
/* initialize the audio output */
DummyAudioOutputClient client;
AudioOutput *ao = load_audio_output(io_thread.GetEventLoop(), client,
argv[2]);
/* parse the audio format */
if (argc > 3)
audio_format = ParseAudioFormat(argv[3], false);
/* do it */
run_output(*ao, audio_format);
/* cleanup and exit */
audio_output_free(ao);
config_global_finish();
return EXIT_SUCCESS;
} catch (const std::exception &e) {
LogError(e);
return EXIT_FAILURE;
}
|
