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-rw-r--r--src/playlist/embcue_playlist_plugin.c168
1 files changed, 168 insertions, 0 deletions
diff --git a/src/playlist/embcue_playlist_plugin.c b/src/playlist/embcue_playlist_plugin.c
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index 000000000..b05b98e49
--- /dev/null
+++ b/src/playlist/embcue_playlist_plugin.c
@@ -0,0 +1,168 @@
+/*
+ * Copyright (C) 2003-2012 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.
+ */
+
+/** \file
+ *
+ * Playlist plugin that reads embedded cue sheets from the "CUESHEET"
+ * tag of a music file.
+ */
+
+#include "config.h"
+#include "playlist/embcue_playlist_plugin.h"
+#include "playlist_plugin.h"
+#include "tag.h"
+#include "tag_handler.h"
+#include "tag_file.h"
+#include "tag_ape.h"
+#include "tag_id3.h"
+#include "song.h"
+#include "cue/cue_parser.h"
+
+#include <glib.h>
+#include <assert.h>
+#include <string.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "cue"
+
+struct embcue_playlist {
+ struct playlist_provider base;
+
+ /**
+ * The value of the file's "CUESHEET" tag.
+ */
+ char *cuesheet;
+
+ /**
+ * The offset of the next line within "cuesheet".
+ */
+ char *next;
+
+ struct cue_parser *parser;
+};
+
+static void
+embcue_tag_pair(const char *name, const char *value, void *ctx)
+{
+ struct embcue_playlist *playlist = ctx;
+
+ if (playlist->cuesheet == NULL &&
+ g_ascii_strcasecmp(name, "cuesheet") == 0)
+ playlist->cuesheet = g_strdup(value);
+}
+
+static const struct tag_handler embcue_tag_handler = {
+ .pair = embcue_tag_pair,
+};
+
+static struct playlist_provider *
+embcue_playlist_open_uri(const char *uri,
+ G_GNUC_UNUSED GMutex *mutex,
+ G_GNUC_UNUSED GCond *cond)
+{
+ if (!g_path_is_absolute(uri))
+ /* only local files supported */
+ return NULL;
+
+ struct embcue_playlist *playlist = g_new(struct embcue_playlist, 1);
+ playlist_provider_init(&playlist->base, &embcue_playlist_plugin);
+ playlist->cuesheet = NULL;
+
+ tag_file_scan(uri, &embcue_tag_handler, playlist);
+ if (playlist->cuesheet == NULL) {
+ tag_ape_scan2(uri, &embcue_tag_handler, playlist);
+ if (playlist->cuesheet == NULL)
+ tag_id3_scan(uri, &embcue_tag_handler, playlist);
+ }
+
+ if (playlist->cuesheet == NULL) {
+ /* no "CUESHEET" tag found */
+ g_free(playlist);
+ return NULL;
+ }
+
+ playlist->next = playlist->cuesheet;
+ playlist->parser = cue_parser_new();
+
+ return &playlist->base;
+}
+
+static void
+embcue_playlist_close(struct playlist_provider *_playlist)
+{
+ struct embcue_playlist *playlist = (struct embcue_playlist *)_playlist;
+
+ cue_parser_free(playlist->parser);
+ g_free(playlist->cuesheet);
+ g_free(playlist);
+}
+
+static struct song *
+embcue_playlist_read(struct playlist_provider *_playlist)
+{
+ struct embcue_playlist *playlist = (struct embcue_playlist *)_playlist;
+
+ struct song *song = cue_parser_get(playlist->parser);
+ if (song != NULL)
+ return song;
+
+ while (*playlist->next != 0) {
+ const char *line = playlist->next;
+ char *eol = strpbrk(playlist->next, "\r\n");
+ if (eol != NULL) {
+ /* null-terminate the line */
+ *eol = 0;
+ playlist->next = eol + 1;
+ } else
+ /* last line; put the "next" pointer to the
+ end of the buffer */
+ playlist->next += strlen(line);
+
+ cue_parser_feed(playlist->parser, line);
+ song = cue_parser_get(playlist->parser);
+ if (song != NULL)
+ return song;
+ }
+
+ cue_parser_finish(playlist->parser);
+ return cue_parser_get(playlist->parser);
+}
+
+static const char *const embcue_playlist_suffixes[] = {
+ /* a few codecs that are known to be supported; there are
+ probably many more */
+ "flac",
+ "mp3", "mp2",
+ "mp4", "mp4a", "m4b",
+ "ape",
+ "wv",
+ "ogg", "oga",
+ NULL
+};
+
+const struct playlist_plugin embcue_playlist_plugin = {
+ .name = "cue",
+
+ .open_uri = embcue_playlist_open_uri,
+ .close = embcue_playlist_close,
+ .read = embcue_playlist_read,
+
+ .suffixes = embcue_playlist_suffixes,
+ .mime_types = NULL,
+};