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
196
197
198
199
200
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2008 Viliam Mateicka <viliam.mateicka@gmail.com>
* This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "../decoder_api.h"
#include "../utils.h"
#include "../log.h"
#include <glib.h>
#include <modplug.h>
enum {
MODPLUG_FRAME_SIZE = 4096,
MODPLUG_PREALLOC_BLOCK = 256 * 1024,
MODPLUG_READ_BLOCK = 128 * 1024,
MODPLUG_FILE_LIMIT = 100 * 1024 * 1024,
};
static GByteArray *mod_loadfile(struct decoder *decoder, struct input_stream *is)
{
unsigned char *data;
GByteArray *bdatas;
int total_len;
int ret;
//known/unknown size, preallocate array, lets read in chunks
if (is->size) {
if (is->size > MODPLUG_FILE_LIMIT) {
g_warning("file too large\n");
return NULL;
}
bdatas = g_byte_array_sized_new(is->size);
} else {
bdatas = g_byte_array_sized_new(MODPLUG_PREALLOC_BLOCK);
}
data = g_malloc(MODPLUG_READ_BLOCK);
total_len = 0;
do {
ret = decoder_read(decoder, is, data, MODPLUG_READ_BLOCK);
if (ret > 0) {
g_byte_array_append(bdatas, data, ret);
total_len += ret;
} else {
//end of file, or read error
break;
}
if (total_len > MODPLUG_FILE_LIMIT) {
g_warning("stream too large\n");
g_free(data);
g_byte_array_free(bdatas, TRUE);
return NULL;
}
} while (input_stream_eof(is));
g_free(data);
return bdatas;
}
static void
mod_decode(struct decoder *decoder, struct input_stream *is)
{
ModPlugFile *f;
ModPlug_Settings settings;
GByteArray *bdatas;
struct audio_format audio_format;
float total_time = 0.0;
int ret, current;
char audio_buffer[MODPLUG_FRAME_SIZE];
float sec_perbyte;
enum decoder_command cmd = DECODE_COMMAND_NONE;
bdatas = mod_loadfile(decoder, is);
if (!bdatas) {
g_warning("could not load stream\n");
return;
}
ModPlug_GetSettings(&settings);
/* alter setting */
settings.mResamplingMode = MODPLUG_RESAMPLE_FIR; /* RESAMP */
settings.mChannels = 2;
settings.mBits = 16;
settings.mFrequency = 44100;
/* insert more setting changes here */
ModPlug_SetSettings(&settings);
f = ModPlug_Load(bdatas->data, bdatas->len);
g_byte_array_free(bdatas, TRUE);
if (!f) {
g_warning("could not decode stream\n");
return;
}
audio_format.bits = 16;
audio_format.sample_rate = 44100;
audio_format.channels = 2;
sec_perbyte =
1.0 / ((audio_format.bits * audio_format.channels / 8.0) *
(float)audio_format.sample_rate);
total_time = ModPlug_GetLength(f) / 1000;
decoder_initialized(decoder, &audio_format,
is->seekable, total_time);
total_time = 0;
do {
ret = ModPlug_Read(f, audio_buffer, MODPLUG_FRAME_SIZE);
if (ret == 0) {
break;
}
total_time += ret * sec_perbyte;
cmd = decoder_data(decoder, NULL,
audio_buffer, ret,
total_time, 0, NULL);
if (cmd == DECODE_COMMAND_SEEK) {
total_time = decoder_seek_where(decoder);
current = total_time * 1000;
ModPlug_Seek(f, current);
decoder_command_finished(decoder);
}
} while (cmd != DECODE_COMMAND_STOP);
ModPlug_Unload(f);
}
static struct tag *mod_tagdup(const char *file)
{
ModPlugFile *f;
struct tag *ret = NULL;
GByteArray *bdatas;
char *title;
struct input_stream is;
if (!input_stream_open(&is, file)) {
g_warning("cant open file %s\n", file);
return NULL;
}
bdatas = mod_loadfile(NULL, &is);
if (!bdatas) {
g_warning("cant load file %s\n", file);
return NULL;
}
f = ModPlug_Load(bdatas->data, bdatas->len);
g_byte_array_free(bdatas, TRUE);
if (!f) {
g_warning("could not decode file %s\n", file);
return NULL;
}
ret = tag_new();
ret->time = 0;
title = g_strdup(ModPlug_GetName(f));
if (title)
tag_add_item(ret, TAG_ITEM_TITLE, title);
g_free(title);
ModPlug_Unload(f);
input_stream_close(&is);
return ret;
}
static const char *const mod_suffixes[] = {
"669", "amf", "ams", "dbm", "dfm", "dsm", "far", "it",
"med", "mdl", "mod", "mtm", "mt2", "okt", "s3m", "stm",
"ult", "umx", "xm",
NULL
};
const struct decoder_plugin modplug_plugin = {
.name = "modplug",
.stream_decode = mod_decode,
.tag_dup = mod_tagdup,
.suffixes = mod_suffixes,
};
|
