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/*
* Copyright (C) 2003-2013 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 "TagFile.hxx"
#include "util/UriUtil.hxx"
#include "DecoderList.hxx"
#include "DecoderPlugin.hxx"
#include "input_stream.h"
#include <assert.h>
#include <unistd.h> /* for SEEK_SET */
bool
tag_file_scan(const char *path_fs,
const struct tag_handler *handler, void *handler_ctx)
{
assert(path_fs != NULL);
assert(handler != NULL);
/* check if there's a suffix and a plugin */
const char *suffix = uri_get_suffix(path_fs);
if (suffix == NULL)
return false;
const struct decoder_plugin *plugin =
decoder_plugin_from_suffix(suffix, NULL);
if (plugin == NULL)
return false;
struct input_stream *is = NULL;
Mutex mutex;
Cond cond;
do {
/* load file tag */
if (decoder_plugin_scan_file(plugin, path_fs,
handler, handler_ctx))
break;
/* fall back to stream tag */
if (plugin->scan_stream != NULL) {
/* open the input_stream (if not already
open) */
if (is == nullptr)
is = input_stream_open(path_fs, mutex, cond,
NULL);
/* now try the stream_tag() method */
if (is != NULL) {
if (decoder_plugin_scan_stream(plugin, is,
handler,
handler_ctx))
break;
input_stream_lock_seek(is, 0, SEEK_SET, NULL);
}
}
plugin = decoder_plugin_from_suffix(suffix, plugin);
} while (plugin != NULL);
if (is != NULL)
input_stream_close(is);
return plugin != NULL;
}
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