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
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* Copyright (C) 2008 Max Kellermann <max@duempel.org>
* 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_thread.h"
#include "decoder_control.h"
#include "decoder_internal.h"
#include "player_control.h"
#include "pipe.h"
#include "song.h"
#include "mapper.h"
#include "path.h"
#include "log.h"
#include "ls.h"
#include <glib.h>
static bool
decoder_stream_decode(const struct decoder_plugin *plugin,
struct decoder *decoder,
struct input_stream *input_stream)
{
assert(plugin != NULL);
assert(plugin->stream_decode != NULL);
assert(decoder != NULL);
assert(!decoder->stream_tag_sent);
assert(input_stream != NULL);
assert(input_stream->ready);
assert(dc.state == DECODE_STATE_START);
/* rewind the stream, so each plugin gets a fresh start */
input_stream_seek(input_stream, 0, SEEK_SET);
plugin->stream_decode(decoder, input_stream);
assert(dc.state == DECODE_STATE_START ||
dc.state == DECODE_STATE_DECODE);
return dc.state != DECODE_STATE_START;
}
static bool
decoder_file_decode(const struct decoder_plugin *plugin,
struct decoder *decoder, const char *path)
{
assert(plugin != NULL);
assert(plugin->file_decode != NULL);
assert(decoder != NULL);
assert(!decoder->stream_tag_sent);
assert(path != NULL);
assert(path[0] == '/');
assert(dc.state == DECODE_STATE_START);
plugin->file_decode(decoder, path);
assert(dc.state == DECODE_STATE_START ||
dc.state == DECODE_STATE_DECODE);
return dc.state != DECODE_STATE_START;
}
static void decoder_run(void)
{
struct song *song = dc.next_song;
char buffer[MPD_PATH_MAX];
const char *uri;
struct decoder decoder;
int ret;
bool close_instream = true;
struct input_stream input_stream;
const struct decoder_plugin *plugin;
if (song_is_file(song))
uri = map_song_fs(song, buffer);
else
uri = song_get_url(song, buffer);
if (uri == NULL) {
dc.state = DECODE_STATE_ERROR;
return;
}
dc.current_song = dc.next_song; /* NEED LOCK */
if (!input_stream_open(&input_stream, uri)) {
dc.state = DECODE_STATE_ERROR;
return;
}
decoder.seeking = false;
decoder.stream_tag_sent = false;
dc.state = DECODE_STATE_START;
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
/* wait for the input stream to become ready; its metadata
will be available then */
while (!input_stream.ready) {
if (dc.command == DECODE_COMMAND_STOP) {
input_stream_close(&input_stream);
dc.state = DECODE_STATE_STOP;
return;
}
ret = input_stream_buffer(&input_stream);
if (ret < 0) {
input_stream_close(&input_stream);
dc.state = DECODE_STATE_ERROR;
return;
}
}
if (dc.command == DECODE_COMMAND_STOP) {
input_stream_close(&input_stream);
dc.state = DECODE_STATE_STOP;
return;
}
ret = false;
if (!song_is_file(song)) {
unsigned int next = 0;
/* first we try mime types: */
while ((plugin = decoder_plugin_from_mime_type(input_stream.mime, next++))) {
if (plugin->stream_decode == NULL)
continue;
ret = decoder_stream_decode(plugin, &decoder,
&input_stream);
if (ret)
break;
plugin = NULL;
}
/* if that fails, try suffix matching the URL: */
if (plugin == NULL) {
const char *s = getSuffix(uri);
next = 0;
while ((plugin = decoder_plugin_from_suffix(s, next++))) {
if (plugin->stream_decode == NULL)
continue;
ret = decoder_stream_decode(plugin, &decoder,
&input_stream);
if (ret)
break;
assert(dc.state == DECODE_STATE_START);
plugin = NULL;
}
}
/* fallback to mp3: */
/* this is needed for bastard streams that don't have a suffix
or set the mimeType */
if (plugin == NULL) {
/* we already know our mp3Plugin supports streams, no
* need to check for stream{Types,DecodeFunc} */
if ((plugin = decoder_plugin_from_name("mp3"))) {
ret = decoder_stream_decode(plugin, &decoder,
&input_stream);
}
}
} else {
unsigned int next = 0;
const char *s = getSuffix(uri);
while ((plugin = decoder_plugin_from_suffix(s, next++))) {
if (plugin->file_decode != NULL) {
input_stream_close(&input_stream);
close_instream = false;
ret = decoder_file_decode(plugin,
&decoder, uri);
if (ret)
break;
} else if (plugin->stream_decode != NULL) {
ret = decoder_stream_decode(plugin, &decoder,
&input_stream);
if (ret)
break;
}
}
}
music_pipe_flush();
if (close_instream)
input_stream_close(&input_stream);
dc.state = ret ? DECODE_STATE_STOP : DECODE_STATE_ERROR;
}
static void * decoder_task(G_GNUC_UNUSED void *arg)
{
while (1) {
assert(dc.state == DECODE_STATE_STOP ||
dc.state == DECODE_STATE_ERROR);
switch (dc.command) {
case DECODE_COMMAND_START:
case DECODE_COMMAND_SEEK:
decoder_run();
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
break;
case DECODE_COMMAND_STOP:
dc.command = DECODE_COMMAND_NONE;
notify_signal(&pc.notify);
break;
case DECODE_COMMAND_NONE:
notify_wait(&dc.notify);
break;
}
}
return NULL;
}
void decoder_thread_start(void)
{
pthread_attr_t attr;
pthread_t decoder_thread;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
if (pthread_create(&decoder_thread, &attr, decoder_task, NULL))
FATAL("Failed to spawn decoder task: %s\n", strerror(errno));
}
|
