core/playlists/library: Add pl_library_{init, deinit}() functions

The pl_library_init() function is used to allocate a playlist for each
library path already in the database, and pl_library_deinit() is then
used to free this memory during cleanup.

Signed-off-by: Anna Schumaker <Anna@OcarinaProject.net>

core/playlist.c

@@ -2,21 +2,25 @@
  * Copyright 2013 (c) Anna Schumaker.
  */
 #include <core/playlist.h>
+#include <core/playlists/library.h>
 #include <core/playlists/system.h>
 
 struct playlist_type *playlist_types[] = {
 	[PL_SYSTEM]  = &pl_system,
+	[PL_LIBRARY] = &pl_library,
 };
 
 
 void playlist_init(struct queue_ops *ops)
 {
 	pl_system_init(ops);
+	pl_library_init(ops);
 }
 
 void playlist_deinit()
 {
 	pl_system_deinit();
+	pl_library_deinit();
 }
 
 bool playlist_add(enum playlist_type_t type, const gchar *name,

core/playlists/library.c

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <core/idle.h>
+#include <core/playlists/library.h>
+
+static struct queue_ops *lib_ops = NULL;
+
+
+static struct playlist *__lib_pl_alloc(const gchar *path)
+{
+	struct playlist *playlist = g_malloc(sizeof(struct playlist));
+
+	playlist->pl_name = path;
+	playlist->pl_type = PL_LIBRARY;
+	queue_init(&playlist->pl_queue, Q_ENABLED | Q_REPEAT, lib_ops, playlist);
+
+	return playlist;
+}
+
+static void __lib_pl_free(struct playlist *playlist)
+{
+	if (playlist) {
+		queue_deinit(&playlist->pl_queue);
+		g_free(playlist);
+	}
+}
+
+
+struct playlist_type pl_library;
+
+
+static bool __lib_pl_init(void *data)
+{
+	struct db_entry *dbe, *next;
+	struct playlist *playlist;
+
+	db_for_each(dbe, next, library_db_get()) {
+		playlist = __lib_pl_alloc(LIBRARY(dbe)->li_path);
+		LIBRARY(dbe)->li_playlist = playlist;
+	}
+
+	return true;
+}
+
+void pl_library_init(struct queue_ops *ops)
+{
+	lib_ops = ops;
+	idle_schedule(IDLE_SYNC, __lib_pl_init, NULL);
+}
+
+void pl_library_deinit()
+{
+	struct db_entry *dbe, *next;
+	struct playlist *playlist;
+
+	db_for_each(dbe, next, library_db_get()) {
+		playlist = LIBRARY(dbe)->li_playlist;
+		LIBRARY(dbe)->li_playlist = NULL;
+
+		__lib_pl_free(playlist);
+	}
+}

include/core/playlists/library.h

@@ -0,0 +1,19 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#ifndef OCARINA_CORE_PLAYLISTS_LIBRARY_H
+#define OCARINA_CORE_PLAYLISTS_LIBRARY_H
+#include <core/playlists/type.h>
+
+
+/* Library playlist type. */
+extern struct playlist_type pl_library;
+
+
+/* Called to initialize library playlists. */
+void pl_library_init(struct queue_ops *);
+
+/* Called to deinitialize system playlists. */
+void pl_library_deinit();
+
+#endif /* OCARINA_CORE_PLAYLISTS_LIBRARY_H */

include/core/playlists/type.h

@@ -11,6 +11,7 @@
 
 enum playlist_type_t {
 	PL_SYSTEM,
+	PL_LIBRARY,
 	PL_MAX_TYPE,
 };
 

tests/core/.gitignore

@@ -12,6 +12,7 @@ tags/library
 tags/track
 queue
 playlists/system
+playlists/library
 playlist
 collection
 tempq

tests/core/playlists/Sconscript

@@ -7,9 +7,10 @@ def PlaylistTest(name):
 	run = CoreTest("playlists/%s" % name)
 	Alias("tests/core/playlists", run)
 	if len(res) > 0 and testing_group([ "tests/core/playlists" ]):
-		Depends(run, res[1])
+		Depends(run, res[-1])
 	return run
 
-res += [ PlaylistTest("system") ]
+res += [ PlaylistTest("system")  ]
+res += [ PlaylistTest("library") ]
 
 Return("res")

tests/core/playlists/library.c

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2016 (c) Anna Schumaker.
+ */
+#include <core/filter.h>
+#include <core/idle.h>
+#include <core/playlists/library.h>
+#include <core/tags/library.h>
+#include <core/tags/tags.h>
+#include <tests/test.h>
+
+void test_library()
+{
+	struct library *library;
+
+	idle_init_sync();
+	filter_init();
+	tags_init();
+	while (idle_run_task()) {};
+
+	library = library_find("tests/Music");
+	test_equal(library->li_playlist, NULL);
+
+	pl_library_init(NULL);
+	while (idle_run_task()) {};
+	test_not_equal(library->li_playlist, NULL);
+
+	pl_library_deinit();
+	test_equal(library->li_playlist, NULL);
+
+	tags_deinit();
+	filter_deinit();
+	idle_deinit();
+}
+
+DECLARE_UNIT_TESTS(
+	UNIT_TEST("Library Playlists", test_library),
+);