mpd/src/playlist/cue_playlist_plugin.c
Max Kellermann 754f26a97c input_stream: non-blocking I/O
Add GMutex, GCond attributes which will be used by callers to
conditionally wait on the stream.

Remove the (now-useless) plugin method buffer(), wait on GCond
instead.  Lock the input_stream before each method call.  Do the same
with the playlist plugins.
2011-09-16 21:22:13 +02:00

142 lines
3.3 KiB
C

/*
* Copyright (C) 2003-2011 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 "playlist/cue_playlist_plugin.h"
#include "playlist_plugin.h"
#include "tag.h"
#include "song.h"
#include "cue/cue_tag.h"
#include <glib.h>
#include <libcue/libcue.h>
#include <assert.h>
#include <string.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "cue"
struct cue_playlist {
struct playlist_provider base;
struct Cd *cd;
unsigned next;
};
static struct playlist_provider *
cue_playlist_open_uri(const char *uri,
G_GNUC_UNUSED GMutex *mutex, G_GNUC_UNUSED GCond *cond)
{
struct cue_playlist *playlist;
FILE *file;
struct Cd *cd;
file = fopen(uri, "rt");
if (file == NULL)
return NULL;
cd = cue_parse_file(file);
fclose(file);
if (cd == NULL)
return NULL;
playlist = g_new(struct cue_playlist, 1);
playlist_provider_init(&playlist->base, &cue_playlist_plugin);
playlist->cd = cd;
playlist->next = 1;
return &playlist->base;
}
static void
cue_playlist_close(struct playlist_provider *_playlist)
{
struct cue_playlist *playlist = (struct cue_playlist *)_playlist;
cd_delete(playlist->cd);
g_free(playlist);
}
static struct song *
cue_playlist_read(struct playlist_provider *_playlist)
{
struct cue_playlist *playlist = (struct cue_playlist *)_playlist;
struct Track *track;
struct tag *tag;
const char *filename;
struct song *song;
track = cd_get_track(playlist->cd, playlist->next);
if (track == NULL)
return NULL;
tag = cue_tag(playlist->cd, playlist->next);
if (tag == NULL)
return NULL;
++playlist->next;
filename = track_get_filename(track);
if (*filename == 0 || filename[0] == '.' ||
strchr(filename, '/') != NULL) {
/* unsafe characters found, bail out */
tag_free(tag);
return NULL;
}
song = song_remote_new(filename);
song->tag = tag;
song->start_ms = ((track_get_start(track)
+ track_get_index(track, 1)
- track_get_zero_pre(track)) * 1000) / 75;
/* append pregap of the next track to the end of this one */
track = cd_get_track(playlist->cd, playlist->next);
if (track != NULL)
song->end_ms = ((track_get_start(track)
+ track_get_index(track, 1)
- track_get_zero_pre(track)) * 1000) / 75;
else
song->end_ms = 0;
return song;
}
static const char *const cue_playlist_suffixes[] = {
"cue",
NULL
};
static const char *const cue_playlist_mime_types[] = {
"application/x-cue",
NULL
};
const struct playlist_plugin cue_playlist_plugin = {
.name = "cue",
.open_uri = cue_playlist_open_uri,
.close = cue_playlist_close,
.read = cue_playlist_read,
.suffixes = cue_playlist_suffixes,
.mime_types = cue_playlist_mime_types,
};