From 030e61115c9dcc804a5441329a9aef2ac9c3619b Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Tue, 5 Jan 2010 21:46:32 +0100
Subject: playlist: added a FLAC playlist plugin
This playlist plugin handles FLAC files with embedded CUE sheets.
---
src/playlist/flac_playlist_plugin.c | 170 ++++++++++++++++++++++++++++++++++++
src/playlist/flac_playlist_plugin.h | 25 ++++++
2 files changed, 195 insertions(+)
create mode 100644 src/playlist/flac_playlist_plugin.c
create mode 100644 src/playlist/flac_playlist_plugin.h
(limited to 'src/playlist')
diff --git a/src/playlist/flac_playlist_plugin.c b/src/playlist/flac_playlist_plugin.c
new file mode 100644
index 000000000..9d66fb331
--- /dev/null
+++ b/src/playlist/flac_playlist_plugin.c
@@ -0,0 +1,170 @@
+/*
+ * Copyright (C) 2003-2010 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/flac_playlist_plugin.h"
+#include "playlist_plugin.h"
+#include "tag.h"
+#include "song.h"
+#include "decoder/flac_metadata.h"
+
+#include <FLAC/metadata.h>
+
+#include <glib.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "flac"
+
+#if defined(FLAC_API_VERSION_CURRENT) && FLAC_API_VERSION_CURRENT > 7
+
+struct flac_playlist {
+ struct playlist_provider base;
+
+ char *uri;
+
+ FLAC__StreamMetadata *cuesheet;
+ FLAC__StreamMetadata streaminfo;
+
+ unsigned next_track;
+};
+
+static struct playlist_provider *
+flac_playlist_open_uri(const char *uri)
+{
+ if (!g_path_is_absolute(uri))
+ /* only local files supported */
+ return NULL;
+
+ FLAC__StreamMetadata *cuesheet;
+ if (!FLAC__metadata_get_cuesheet(uri, &cuesheet))
+ return NULL;
+
+ struct flac_playlist *playlist = g_new(struct flac_playlist, 1);
+ playlist_provider_init(&playlist->base, &flac_playlist_plugin);
+
+ if (!FLAC__metadata_get_streaminfo(uri, &playlist->streaminfo)) {
+ FLAC__metadata_object_delete(playlist->cuesheet);
+ g_free(playlist);
+ return NULL;
+ }
+
+ playlist->uri = g_strdup(uri);
+ playlist->cuesheet = cuesheet;
+ playlist->next_track = 0;
+
+ return &playlist->base;
+}
+
+static void
+flac_playlist_close(struct playlist_provider *_playlist)
+{
+ struct flac_playlist *playlist = (struct flac_playlist *)_playlist;
+
+ g_free(playlist->uri);
+ FLAC__metadata_object_delete(playlist->cuesheet);
+ g_free(playlist);
+}
+
+static struct song *
+flac_playlist_read(struct playlist_provider *_playlist)
+{
+ struct flac_playlist *playlist = (struct flac_playlist *)_playlist;
+ const FLAC__StreamMetadata_CueSheet *cs =
+ &playlist->cuesheet->data.cue_sheet;
+
+ /* find the next audio track */
+
+ while (playlist->next_track < cs->num_tracks &&
+ (cs->tracks[playlist->next_track].number > cs->num_tracks ||
+ cs->tracks[playlist->next_track].type != 0))
+ ++playlist->next_track;
+
+ if (playlist->next_track >= cs->num_tracks)
+ return NULL;
+
+ FLAC__uint64 start = cs->tracks[playlist->next_track].offset;
+ ++playlist->next_track;
+ FLAC__uint64 end = playlist->next_track < cs->num_tracks
+ ? cs->tracks[playlist->next_track].offset
+ : playlist->streaminfo.data.stream_info.total_samples;
+
+ struct song *song = song_file_new(playlist->uri, NULL);
+ song->start_ms = start * 1000 /
+ playlist->streaminfo.data.stream_info.sample_rate;
+ song->end_ms = end * 1000 /
+ playlist->streaminfo.data.stream_info.sample_rate;
+
+ char track[16];
+ g_snprintf(track, sizeof(track), "%u", playlist->next_track);
+ song->tag = flac_tag_load(playlist->uri, track);
+ if (song->tag == NULL)
+ song->tag = tag_new();
+
+ song->tag->time = end > start
+ ? ((end - start - 1 +
+ playlist->streaminfo.data.stream_info.sample_rate) /
+ playlist->streaminfo.data.stream_info.sample_rate)
+ : 0;
+
+ tag_clear_items_by_type(song->tag, TAG_TRACK);
+ tag_add_item(song->tag, TAG_TRACK, track);
+
+ return song;
+}
+
+static const char *const flac_playlist_suffixes[] = {
+ "flac",
+ NULL
+};
+
+static const char *const flac_playlist_mime_types[] = {
+ "application/flac",
+ "application/x-flac",
+ "audio/flac",
+ "audio/x-flac",
+ NULL
+};
+
+const struct playlist_plugin flac_playlist_plugin = {
+ .name = "flac",
+
+ .open_uri = flac_playlist_open_uri,
+ .close = flac_playlist_close,
+ .read = flac_playlist_read,
+
+ .suffixes = flac_playlist_suffixes,
+ .mime_types = flac_playlist_mime_types,
+};
+
+#else /* FLAC_API_VERSION_CURRENT <= 7 */
+
+static bool
+flac_playlist_init(G_GNUC_UNUSED const struct config_param *param)
+{
+ /* this libFLAC version does not support embedded CUE sheets;
+ disable this plugin */
+ return false;
+}
+
+const struct playlist_plugin flac_playlist_plugin = {
+ .name = "flac",
+ .init = flac_playlist_init,
+};
+
+#endif
diff --git a/src/playlist/flac_playlist_plugin.h b/src/playlist/flac_playlist_plugin.h
new file mode 100644
index 000000000..7b141264f
--- /dev/null
+++ b/src/playlist/flac_playlist_plugin.h
@@ -0,0 +1,25 @@
+/*
+ * Copyright (C) 2003-2010 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.
+ */
+
+#ifndef MPD_PLAYLIST_FLAC_PLAYLIST_PLUGIN_H
+#define MPD_PLAYLIST_FLAC_PLAYLIST_PLUGIN_H
+
+extern const struct playlist_plugin flac_playlist_plugin;
+
+#endif
--
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