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
|
/*
* Copyright (C) 2003-2010 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 "encoder_api.h"
#include "encoder_plugin.h"
#include "pcm_buffer.h"
#include <assert.h>
#include <string.h>
struct null_encoder {
struct encoder encoder;
struct pcm_buffer buffer;
size_t buffer_length;
};
extern const struct encoder_plugin null_encoder_plugin;
static inline GQuark
null_encoder_quark(void)
{
return g_quark_from_static_string("null_encoder");
}
static struct encoder *
null_encoder_init(G_GNUC_UNUSED const struct config_param *param,
G_GNUC_UNUSED GError **error)
{
struct null_encoder *encoder;
encoder = g_new(struct null_encoder, 1);
encoder_struct_init(&encoder->encoder, &null_encoder_plugin);
return &encoder->encoder;
}
static void
null_encoder_finish(struct encoder *_encoder)
{
struct null_encoder *encoder = (struct null_encoder *)_encoder;
g_free(encoder);
}
static void
null_encoder_close(struct encoder *_encoder)
{
struct null_encoder *encoder = (struct null_encoder *)_encoder;
pcm_buffer_deinit(&encoder->buffer);
}
static bool
null_encoder_open(struct encoder *_encoder,
G_GNUC_UNUSED struct audio_format *audio_format,
G_GNUC_UNUSED GError **error)
{
struct null_encoder *encoder = (struct null_encoder *)_encoder;
encoder->buffer_length = 0;
pcm_buffer_init(&encoder->buffer);
return true;
}
static bool
null_encoder_write(struct encoder *_encoder,
const void *data, size_t length,
G_GNUC_UNUSED GError **error)
{
struct null_encoder *encoder = (struct null_encoder *)_encoder;
char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length + length);
memcpy(buffer+encoder->buffer_length, data, length);
encoder->buffer_length += length;
return true;
}
static size_t
null_encoder_read(struct encoder *_encoder, void *dest, size_t length)
{
struct null_encoder *encoder = (struct null_encoder *)_encoder;
char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length);
if (length > encoder->buffer_length)
length = encoder->buffer_length;
memcpy(dest, buffer, length);
encoder->buffer_length -= length;
memmove(buffer, buffer + length, encoder->buffer_length);
return length;
}
const struct encoder_plugin null_encoder_plugin = {
.name = "null",
.init = null_encoder_init,
.finish = null_encoder_finish,
.open = null_encoder_open,
.close = null_encoder_close,
.write = null_encoder_write,
.read = null_encoder_read,
};
|
